Repository: getmoto/moto

Issue:
Full Step Functions Execution Support
I didn't see this in the issues, so my apologies if it's already filed. 

This is a feature request for full Step Function execution support, such that test code could call sfn.StartExecution and get a production-like execution of a state machine, including retries, error handling, concurrency, choice evaluation, etc, and actually runs application code.
Something like StepFunctionsLocal from AWS, which is in java: https://docs.aws.amazon.com/step-functions/latest/dg/sfn-local.html

I appreciate that implementing all of step functions is a daunting task! I will describe a subset that I think would be useful to a large set of developers. 

My ideal implementation would support State Language and lambda task integration. 

I suppose of course it could it integrate with moto.lambda to run lambda functions, but I think some kind of configuration interface/escape hatch enabling test writers to implement their own implementation of any task type would keep it flexible enough for users to do some minimal work to keep up with new step functions features. 

In my case, I would hook the lambda tasks directly to my own worker code and skip the lambda worker model that moto has, as I don't use this





Discussion:
Hi @prestomation, that is daunting indeed! Are you using the decorators, or server mode?

Considering the StepFunctionsLocal already exists, the easiest implementation might be to just start that Docker-image from within Moto. Appropriate calls can than simply be forwarded, and we get all the functionality without having to figure out all the logic ourselves. 

The big downside is that calling Lambda's would only be possible in Server Mode.

Not sure how we would be able to intercept any Lambda-calls, and execute a provided workder code instead, with that solution.
Hello, we are refactoring our CI from a lambda / s3 / cloudwatch / cfn based architecture to a step-function based one, and not being able to port moto mocks atm is certainly a blocker on our side. 

I understand why this would be a very big work to port. Does anyone have an idea of which designs could allow moto to consume the [StepFunctionsLocal](https://hub.docker.com/r/amazon/aws-stepfunctions-local) docker image? 

If this is not the way moto works (at least when not in server mode), then could the only solution be to mock all step functions logic into moto ? Which would be a big work of course, but wondering if we could try to help in that case maybe.

Any other possibilities? Thanks
Using the server mode is definitely the easiest way, as (as far as I can tell) that does not need any work on Moto's side.

When using decorators:
One option would be to run a server, and pass in the models/backends (created by the decorator) that the server will update.
The starting point would be similar to ServerMode, but the way it deals with incoming requests would be very different.

The workflow would then be:
User calls start_execution
Moto starts a server
Moto starts the StepFunctionsLocal as a Docker image, passing in the server endpoint for Lambda/SQS/etc endpoints

Pros:
1. No recreating any of the step functions logic (ASL parsing)

Cons:
1. As it's an asyncronous process, there is no logical entrypoint where Moto can kill the server. If the unit test fails, the user would have to kill this server manually
2. AWS Lambdas will be executed inside a Docker container (as usual). That means there's no way of mocking any HTTP requests.
3. Very complex from a software architecture point of view, and difficult to debug (decorator calls Docker calls server calls Docker (for AWS Lambda))

It would also blur the lines between the Docker implementatino and our own. Would we even need to keep any of our current SFN implementation, or do we just redirect to the StepFunctionsLocal image?

As I was thinking this through I got quite excited with the potential functionality it would give us, but now that I'm listed the cons, I'm not so sure about it anymore.

@spulec Quick ping in case you have any thougths on this
> could the only solution be to mock all step functions logic into moto ?

If somebody is willing to do the work for this, yeah - that might be more feasible. It's easier to debug, easier to implement it gradually.
It will have the same limitation that there would be no way of mocking HTTP requests, though.

I managed to run a quite complex state machine from one test using moto_server and the docker image for step function local. Happy to write down more details later but the outlines are (as @bblommers advised):

1) run `moto_server` (on http://127.0.0.1:5000/)

2) run the SAM local step function docker image: 
```
docker run -p 8083:8083 --env-file aws-stepfunctions-local-credentials.txt amazon/aws-stepfunctions-local:1.7.3
```
with the following config file (aws-stepfunctions-local-credentials.txt):
```
AWS_DEFAULT_REGION=eu-west-1
LAMBDA_ENDPOINT=http://host.docker.internal:5000/
```

3) declaring the tests with (excerpts only):
```python
import boto3
options = {
        'region_name': LAMBDA_REGION,
        'endpoint_url': 'http://127.0.0.1:5000/'
}

#still using @mock_ssm

stack = {} # actually a Class
stack.clientS3 = boto3.client('s3', **options)
stack.clientEC2 = boto3.client('ec2', **options)
stack.clientCf = boto3.client( 'cloudformation', **options)
stack.clientIam = boto3.client('iam', **options)
stack.lambdaClient = boto3.client('lambda', **options)

genericLambda = stack.lambdaClient.create_function(
    FunctionName="testFunction",
    Runtime="python3.7",
    Role=_get_default_role(), #defined elsewhere
    Handler="lambda_function.lambda_handler",
    Code={"ZipFile": get_test_zip_file1()}, #for example, same as in https://github.com/spulec/moto/blob/ddd3c0edc4934d84bd12d04f32df00274b8a2ff7/tests/test_awslambda/test_lambda.py#L44
    Description="test lambda function",
    Timeout=3,
    MemorySize=128,
    Publish=True,
)

stack.clientStepFunctions = boto3.client(
    'stepfunctions',
    LAMBDA_REGION,
    endpoint_url='http://localhost:8083' # provided by SAM step function local run from docker
)

name = "example_step_function"
with open('digital_Nested_Web_CI_Stack/statemachines/run_codebuild_jobs_and_process_output.asl.json', 'r') as stream:
    myTemplateJson = json.dumps(json.load(stream)).\
        replace("${buildCodebuildParametersArn}", genericLambda['FunctionArn']).\
        replace("${buildBaseMessageArn}", genericLambda['FunctionArn']).\
        replace("${buildFailingTestsMessageArn}", genericLambda['FunctionArn']).\
        replace("${postMessageArn}", genericLambda['FunctionArn']).\
        replace("${postStatusCheckArn}", genericLambda['FunctionArn']).\
        replace("${concatenateAttributeFromMapArn}", genericLambda['FunctionArn']).\
        replace("${buildCodebuildParametersArn}", genericLambda['FunctionArn']).\
        replace("${buildCoverageMessageArn}", genericLambda['FunctionArn']).\
        replace("${codebuildResourceString}", "arn:aws:states:::codebuild:startBuild")
    response = stack.clientStepFunctions.create_state_machine(
        name=name,
        definition=myTemplateJson,
        roleArn=_get_default_role(),
    )
    event = create_github_event_from_params(test_params)

    event['StageName'] = 'dummy_stage_name'
    execution = stack.clientStepFunctions.start_execution(
        stateMachineArn=response["stateMachineArn"],
        input=json.dumps(event)
    )
    description = stack.clientStepFunctions.describe_execution(executionArn=execution["executionArn"])
    print('execution description', description) # status is "running"
```

And see the step function states being run one by one in the window where you opened SAM local from docker


@bblommers fyi in the above I see **ONE** thing which I think is a blocker to add proper testing atm: not being able to use [`start_sync_execution`](https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/stepfunctions.html#SFN.Client.start_sync_execution) in moto yet - so that we can test the step function return values after everything is finished. 

Any way  I could help adding that to Moto ? (disclaimer: it would be my first open-source python contribution so woud need some guidance please..)

Thanks

[EDIT]: this is not even a blocker, as we can just poll to wait for the step function to finish, and when finished we can access its `output` on which we can add assertions:


```python
description = stack.clientStepFunctions.describe_execution(executionArn=execution["executionArn"])

while_timeout = time.time() + 120
while description['status'] == "RUNNING" and time.time() < while_timeout:
    description = stack.clientStepFunctions.describe_execution(executionArn=execution["executionArn"])
    print('execution description status', description['status'])
    print('execution description keys', description.keys())
    print('execution description ResponseMetadata', description['ResponseMetadata'])
    time.sleep(10)
if description['status'] == 'SUCCEEDED':
    print('execution description output', description['output'])
else:
    print('execution has failed', description['status'])
    executionHistory = clientSFN.get_execution_history(
        executionArn=execution["executionArn"],
        maxResults=2,
        reverseOrder=True
    )
    print('executionHistory', executionHistory)
self.assertEqual(description['status'], 'SUCCEEDED')

```
Note: start & stop `moto_server` and `SAM step function local` in your test with:


```python
        moto_server_cmd = subprocess.Popen(
            ['moto_server'],
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT
        )
        # 'aws-stepfunctions-local-credentials.txt' defined in previous comments should be in the same folder as the one where you call your tests (root?)
        sam_step_function_local_cmd = subprocess.Popen(
            ['docker', 'run', '-p', '8083:8083', '--env-file', 'aws-stepfunctions-local-credentials.txt',
             'amazon/aws-stepfunctions-local:1.7.3'],
            stdout=subprocess.PIPE,
            stderr=subprocess.STDOUT
        )

        try:
          # your tests
        finally:
            moto_server_cmd.terminate()
            sam_step_function_local_cmd.terminate()
```
```
Thanks for the feedback, and providing a more detailed guide on how to do this, @Leooo! Good to see it works in practice, not just in theory.

> Any way I could help adding that to Moto ?

Now that all SFN calls are pointed to the Docker container it's probably not necessary at all.

Having said that, if you do want to add the method to moto, PR's are always welcome!
All it would take is another method `def start_sync_execution` in responses.py.
Considering there's no difference in functionality atm, you might just be able to get away with redirecting to the existing [start_execution method](https://github.com/spulec/moto/blob/master/moto/stepfunctions/responses.py#L134)
The unit test for this can be a simple copy/paste of the start_execution test: https://github.com/spulec/moto/blob/master/tests/test_stepfunctions/test_stepfunctions.py#L488
```LAMBDA_ENDPOINT=http://host.docker.internal:5000/``` in aws-stepfunctions-local-credentials.txt seems to only work on my MAC, and not on `ubuntu-latest` in github actions (even with Docker 20.10.3). Tried https://stackoverflow.com/a/43541732/1984997 and others without success - this seems to be more of a [stepfunctions-local issue](https://stackoverflow.com/a/57088919/1984997) though 

[Edit]: see fix in [here](https://stackoverflow.com/a/66639955/1984997)

Patch:
diff --git a/moto/core/config.py b/moto/core/config.py
--- a/moto/core/config.py
+++ b/moto/core/config.py
@@ -21,6 +21,10 @@ class _iam_config(TypedDict, total=False):
     load_aws_managed_policies: bool
 
 
+class _sfn_config(TypedDict, total=False):
+    execute_state_machine: bool
+
+
 DefaultConfig = TypedDict(
     "DefaultConfig",
     {
@@ -28,6 +32,7 @@ class _iam_config(TypedDict, total=False):
         "core": _core_config,
         "lambda": _docker_config,
         "iam": _iam_config,
+        "stepfunctions": _sfn_config,
     },
     total=False,
 )
@@ -41,6 +46,7 @@ class _iam_config(TypedDict, total=False):
         "reset_boto3_session": True,
     },
     "iam": {"load_aws_managed_policies": False},
+    "stepfunctions": {"execute_state_machine": False},
 }
 
 
diff --git a/moto/moto_api/_internal/models.py b/moto/moto_api/_internal/models.py
--- a/moto/moto_api/_internal/models.py
+++ b/moto/moto_api/_internal/models.py
@@ -128,6 +128,8 @@ def set_config(self, config: Dict[str, Any]) -> None:
             default_user_config["batch"] = config["batch"]
         if "lambda" in config:
             default_user_config["lambda"] = config["lambda"]
+        if "stepfunctions" in config:
+            default_user_config["stepfunctions"] = config["stepfunctions"]
 
 
 moto_api_backend = MotoAPIBackend(region_name="global", account_id=DEFAULT_ACCOUNT_ID)
diff --git a/moto/stepfunctions/models.py b/moto/stepfunctions/models.py
--- a/moto/stepfunctions/models.py
+++ b/moto/stepfunctions/models.py
@@ -73,7 +73,7 @@ def stop_execution(self, execution_arn: str) -> "Execution":
             raise ExecutionDoesNotExist(
                 "Execution Does Not Exist: '" + execution_arn + "'"
             )
-        execution.stop()
+        execution.stop(stop_date=datetime.now(), error="", cause="")
         return execution
 
     def _ensure_execution_name_doesnt_exist(self, name: str) -> None:
@@ -265,6 +265,12 @@ def __init__(
             else "FAILED"
         )
         self.stop_date: Optional[str] = None
+        self.account_id = account_id
+        self.region_name = region_name
+        self.output: Optional[str] = None
+        self.output_details: Optional[str] = None
+        self.cause: Optional[str] = None
+        self.error: Optional[str] = None
 
     def get_execution_history(self, roleArn: str) -> List[Dict[str, Any]]:
         sf_execution_history_type = settings.get_sf_execution_history_type()
@@ -365,12 +371,28 @@ def get_execution_history(self, roleArn: str) -> List[Dict[str, Any]]:
             ]
         return []
 
-    def stop(self) -> None:
+    def stop(self, *args: Any, **kwargs: Any) -> None:
         self.status = "ABORTED"
         self.stop_date = iso_8601_datetime_with_milliseconds()
 
 
 class StepFunctionBackend(BaseBackend):
+    """
+    Configure Moto to explicitly parse and execute the StateMachine:
+
+    .. sourcecode:: python
+
+        @mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+
+    By default, executing a StateMachine does nothing, and calling `describe_state_machine` will return static data.
+
+    Set the following environment variable if you want to get the static data to have a FAILED status:
+
+    .. sourcecode:: bash
+
+        SF_EXECUTION_HISTORY_TYPE=FAILURE
+
+    """
 
     # https://boto3.amazonaws.com/v1/documentation/api/latest/reference/services/stepfunctions.html#SFN.Client.create_state_machine
     # A name must not contain:
@@ -484,7 +506,6 @@ class StepFunctionBackend(BaseBackend):
     def __init__(self, region_name: str, account_id: str):
         super().__init__(region_name, account_id)
         self.state_machines: List[StateMachine] = []
-        self.executions: List[Execution] = []
         self._account_id = None
 
     def create_state_machine(
@@ -556,14 +577,6 @@ def stop_execution(self, execution_arn: str) -> Execution:
     def list_executions(
         self, state_machine_arn: str, status_filter: Optional[str] = None
     ) -> List[Execution]:
-        """
-        The status of every execution is set to 'RUNNING' by default.
-        Set the following environment variable if you want to get a FAILED status back:
-
-        .. sourcecode:: bash
-
-            SF_EXECUTION_HISTORY_TYPE=FAILURE
-        """
         executions = self.describe_state_machine(state_machine_arn).executions
 
         if status_filter:
@@ -572,14 +585,6 @@ def list_executions(
         return sorted(executions, key=lambda x: x.start_date, reverse=True)
 
     def describe_execution(self, execution_arn: str) -> Execution:
-        """
-        The status of every execution is set to 'RUNNING' by default.
-        Set the following environment variable if you want to get a FAILED status back:
-
-        .. sourcecode:: bash
-
-            SF_EXECUTION_HISTORY_TYPE=FAILURE
-        """
         self._validate_execution_arn(execution_arn)
         state_machine = self._get_state_machine_for_execution(execution_arn)
         exctn = next(
@@ -593,14 +598,6 @@ def describe_execution(self, execution_arn: str) -> Execution:
         return exctn
 
     def get_execution_history(self, execution_arn: str) -> List[Dict[str, Any]]:
-        """
-        A static list of successful events is returned by default.
-        Set the following environment variable if you want to get a static list of events for a failed execution:
-
-        .. sourcecode:: bash
-
-            SF_EXECUTION_HISTORY_TYPE=FAILURE
-        """
         self._validate_execution_arn(execution_arn)
         state_machine = self._get_state_machine_for_execution(execution_arn)
         execution = next(
@@ -613,6 +610,13 @@ def get_execution_history(self, execution_arn: str) -> List[Dict[str, Any]]:
             )
         return execution.get_execution_history(state_machine.roleArn)
 
+    def describe_state_machine_for_execution(self, execution_arn: str) -> StateMachine:
+        for sm in self.state_machines:
+            for exc in sm.executions:
+                if exc.execution_arn == execution_arn:
+                    return sm
+        raise ResourceNotFound(execution_arn)
+
     def list_tags_for_resource(self, arn: str) -> List[Dict[str, str]]:
         try:
             state_machine = self.describe_state_machine(arn)
@@ -634,6 +638,30 @@ def untag_resource(self, resource_arn: str, tag_keys: List[str]) -> None:
         except StateMachineDoesNotExist:
             raise ResourceNotFound(resource_arn)
 
+    def send_task_failure(self, task_token: str) -> None:
+        pass
+
+    def send_task_heartbeat(self, task_token: str) -> None:
+        pass
+
+    def send_task_success(self, task_token: str, outcome: str) -> None:
+        pass
+
+    def describe_map_run(self, map_run_arn: str) -> Dict[str, Any]:
+        return {}
+
+    def list_map_runs(self, execution_arn: str) -> Any:
+        return []
+
+    def update_map_run(
+        self,
+        map_run_arn: str,
+        max_concurrency: int,
+        tolerated_failure_count: str,
+        tolerated_failure_percentage: str,
+    ) -> None:
+        pass
+
     def _validate_name(self, name: str) -> None:
         if any(invalid_char in name for invalid_char in self.invalid_chars_for_name):
             raise InvalidName("Invalid Name: '" + name + "'")
diff --git a/moto/stepfunctions/parser/__init__.py b/moto/stepfunctions/parser/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/api.py b/moto/stepfunctions/parser/api.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/api.py
@@ -0,0 +1,1048 @@
+from datetime import datetime
+from typing import List, Optional, TypedDict
+
+from ..exceptions import AWSError as ServiceException
+
+AliasDescription = str
+CharacterRestrictedName = str
+ClientToken = str
+ConnectorParameters = str
+Definition = str
+Enabled = bool
+ErrorMessage = str
+HTTPBody = str
+HTTPHeaders = str
+HTTPMethod = str
+HTTPProtocol = str
+HTTPStatusCode = str
+HTTPStatusMessage = str
+Identity = str
+IncludeExecutionData = bool
+IncludeExecutionDataGetExecutionHistory = bool
+ListExecutionsPageToken = str
+MapRunLabel = str
+MaxConcurrency = int
+Name = str
+PageSize = int
+PageToken = str
+Publish = bool
+RedriveCount = int
+RevealSecrets = bool
+ReverseOrder = bool
+RevisionId = str
+SensitiveCause = str
+SensitiveData = str
+SensitiveDataJobInput = str
+SensitiveError = str
+StateName = str
+TagKey = str
+TagValue = str
+TaskToken = str
+ToleratedFailurePercentage = float
+TraceHeader = str
+URL = str
+UnsignedInteger = int
+VersionDescription = str
+VersionWeight = int
+includedDetails = bool
+truncated = bool
+
+
+class ExecutionRedriveFilter(str):
+    REDRIVEN = "REDRIVEN"
+    NOT_REDRIVEN = "NOT_REDRIVEN"
+
+
+class ExecutionRedriveStatus(str):
+    REDRIVABLE = "REDRIVABLE"
+    NOT_REDRIVABLE = "NOT_REDRIVABLE"
+    REDRIVABLE_BY_MAP_RUN = "REDRIVABLE_BY_MAP_RUN"
+
+
+class ExecutionStatus(str):
+    RUNNING = "RUNNING"
+    SUCCEEDED = "SUCCEEDED"
+    FAILED = "FAILED"
+    TIMED_OUT = "TIMED_OUT"
+    ABORTED = "ABORTED"
+    PENDING_REDRIVE = "PENDING_REDRIVE"
+
+
+class HistoryEventType(str):
+    ActivityFailed = "ActivityFailed"
+    ActivityScheduled = "ActivityScheduled"
+    ActivityScheduleFailed = "ActivityScheduleFailed"
+    ActivityStarted = "ActivityStarted"
+    ActivitySucceeded = "ActivitySucceeded"
+    ActivityTimedOut = "ActivityTimedOut"
+    ChoiceStateEntered = "ChoiceStateEntered"
+    ChoiceStateExited = "ChoiceStateExited"
+    ExecutionAborted = "ExecutionAborted"
+    ExecutionFailed = "ExecutionFailed"
+    ExecutionStarted = "ExecutionStarted"
+    ExecutionSucceeded = "ExecutionSucceeded"
+    ExecutionTimedOut = "ExecutionTimedOut"
+    FailStateEntered = "FailStateEntered"
+    LambdaFunctionFailed = "LambdaFunctionFailed"
+    LambdaFunctionScheduled = "LambdaFunctionScheduled"
+    LambdaFunctionScheduleFailed = "LambdaFunctionScheduleFailed"
+    LambdaFunctionStarted = "LambdaFunctionStarted"
+    LambdaFunctionStartFailed = "LambdaFunctionStartFailed"
+    LambdaFunctionSucceeded = "LambdaFunctionSucceeded"
+    LambdaFunctionTimedOut = "LambdaFunctionTimedOut"
+    MapIterationAborted = "MapIterationAborted"
+    MapIterationFailed = "MapIterationFailed"
+    MapIterationStarted = "MapIterationStarted"
+    MapIterationSucceeded = "MapIterationSucceeded"
+    MapStateAborted = "MapStateAborted"
+    MapStateEntered = "MapStateEntered"
+    MapStateExited = "MapStateExited"
+    MapStateFailed = "MapStateFailed"
+    MapStateStarted = "MapStateStarted"
+    MapStateSucceeded = "MapStateSucceeded"
+    ParallelStateAborted = "ParallelStateAborted"
+    ParallelStateEntered = "ParallelStateEntered"
+    ParallelStateExited = "ParallelStateExited"
+    ParallelStateFailed = "ParallelStateFailed"
+    ParallelStateStarted = "ParallelStateStarted"
+    ParallelStateSucceeded = "ParallelStateSucceeded"
+    PassStateEntered = "PassStateEntered"
+    PassStateExited = "PassStateExited"
+    SucceedStateEntered = "SucceedStateEntered"
+    SucceedStateExited = "SucceedStateExited"
+    TaskFailed = "TaskFailed"
+    TaskScheduled = "TaskScheduled"
+    TaskStarted = "TaskStarted"
+    TaskStartFailed = "TaskStartFailed"
+    TaskStateAborted = "TaskStateAborted"
+    TaskStateEntered = "TaskStateEntered"
+    TaskStateExited = "TaskStateExited"
+    TaskSubmitFailed = "TaskSubmitFailed"
+    TaskSubmitted = "TaskSubmitted"
+    TaskSucceeded = "TaskSucceeded"
+    TaskTimedOut = "TaskTimedOut"
+    WaitStateAborted = "WaitStateAborted"
+    WaitStateEntered = "WaitStateEntered"
+    WaitStateExited = "WaitStateExited"
+    MapRunAborted = "MapRunAborted"
+    MapRunFailed = "MapRunFailed"
+    MapRunStarted = "MapRunStarted"
+    MapRunSucceeded = "MapRunSucceeded"
+    ExecutionRedriven = "ExecutionRedriven"
+    MapRunRedriven = "MapRunRedriven"
+
+
+class InspectionLevel(str):
+    INFO = "INFO"
+    DEBUG = "DEBUG"
+    TRACE = "TRACE"
+
+
+class LogLevel(str):
+    ALL = "ALL"
+    ERROR = "ERROR"
+    FATAL = "FATAL"
+    OFF = "OFF"
+
+
+class MapRunStatus(str):
+    RUNNING = "RUNNING"
+    SUCCEEDED = "SUCCEEDED"
+    FAILED = "FAILED"
+    ABORTED = "ABORTED"
+
+
+class StateMachineStatus(str):
+    ACTIVE = "ACTIVE"
+    DELETING = "DELETING"
+
+
+class StateMachineType(str):
+    STANDARD = "STANDARD"
+    EXPRESS = "EXPRESS"
+
+
+class SyncExecutionStatus(str):
+    SUCCEEDED = "SUCCEEDED"
+    FAILED = "FAILED"
+    TIMED_OUT = "TIMED_OUT"
+
+
+class TestExecutionStatus(str):
+    SUCCEEDED = "SUCCEEDED"
+    FAILED = "FAILED"
+    RETRIABLE = "RETRIABLE"
+    CAUGHT_ERROR = "CAUGHT_ERROR"
+
+
+class ValidationExceptionReason(str):
+    API_DOES_NOT_SUPPORT_LABELED_ARNS = "API_DOES_NOT_SUPPORT_LABELED_ARNS"
+    MISSING_REQUIRED_PARAMETER = "MISSING_REQUIRED_PARAMETER"
+    CANNOT_UPDATE_COMPLETED_MAP_RUN = "CANNOT_UPDATE_COMPLETED_MAP_RUN"
+    INVALID_ROUTING_CONFIGURATION = "INVALID_ROUTING_CONFIGURATION"
+
+
+class ActivityDoesNotExist(ServiceException):
+    code: str = "ActivityDoesNotExist"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ActivityLimitExceeded(ServiceException):
+    code: str = "ActivityLimitExceeded"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ActivityWorkerLimitExceeded(ServiceException):
+    code: str = "ActivityWorkerLimitExceeded"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ConflictException(ServiceException):
+    code: str = "ConflictException"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ExecutionAlreadyExists(ServiceException):
+    code: str = "ExecutionAlreadyExists"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ExecutionDoesNotExist(ServiceException):
+    code: str = "ExecutionDoesNotExist"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ExecutionLimitExceeded(ServiceException):
+    code: str = "ExecutionLimitExceeded"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ExecutionNotRedrivable(ServiceException):
+    code: str = "ExecutionNotRedrivable"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidArn(ServiceException):
+    code: str = "InvalidArn"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidDefinition(ServiceException):
+    code: str = "InvalidDefinition"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidExecutionInput(ServiceException):
+    code: str = "InvalidExecutionInput"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidLoggingConfiguration(ServiceException):
+    code: str = "InvalidLoggingConfiguration"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidName(ServiceException):
+    code: str = "InvalidName"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidOutput(ServiceException):
+    code: str = "InvalidOutput"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidToken(ServiceException):
+    code: str = "InvalidToken"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class InvalidTracingConfiguration(ServiceException):
+    code: str = "InvalidTracingConfiguration"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class MissingRequiredParameter(ServiceException):
+    code: str = "MissingRequiredParameter"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ResourceNotFound(ServiceException):
+    code: str = "ResourceNotFound"
+    sender_fault: bool = False
+    status_code: int = 400
+    resourceName: Optional[str]
+
+
+class ServiceQuotaExceededException(ServiceException):
+    code: str = "ServiceQuotaExceededException"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class StateMachineAlreadyExists(ServiceException):
+    code: str = "StateMachineAlreadyExists"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class StateMachineDeleting(ServiceException):
+    code: str = "StateMachineDeleting"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class StateMachineDoesNotExist(ServiceException):
+    code: str = "StateMachineDoesNotExist"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class StateMachineLimitExceeded(ServiceException):
+    code: str = "StateMachineLimitExceeded"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class StateMachineTypeNotSupported(ServiceException):
+    code: str = "StateMachineTypeNotSupported"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class TaskDoesNotExist(ServiceException):
+    code: str = "TaskDoesNotExist"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class TaskTimedOut(ServiceException):
+    code: str = "TaskTimedOut"
+    sender_fault: bool = False
+    status_code: int = 400
+
+
+class ValidationException(ServiceException):
+    code: str = "ValidationException"
+    sender_fault: bool = False
+    status_code: int = 400
+    reason: Optional[ValidationExceptionReason]
+
+
+class ActivityFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+Timestamp = datetime
+
+
+class ActivityListItem(TypedDict, total=False):
+    activityArn: str
+    name: Name
+    creationDate: Timestamp
+
+
+ActivityList = List[ActivityListItem]
+
+
+class ActivityScheduleFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+TimeoutInSeconds = int
+
+
+class HistoryEventExecutionDataDetails(TypedDict, total=False):
+    truncated: Optional[truncated]
+
+
+class ActivityScheduledEventDetails(TypedDict, total=False):
+    resource: str
+    input: Optional[SensitiveData]
+    inputDetails: Optional[HistoryEventExecutionDataDetails]
+    timeoutInSeconds: Optional[TimeoutInSeconds]
+    heartbeatInSeconds: Optional[TimeoutInSeconds]
+
+
+class ActivityStartedEventDetails(TypedDict, total=False):
+    workerName: Optional[Identity]
+
+
+class ActivitySucceededEventDetails(TypedDict, total=False):
+    output: Optional[SensitiveData]
+    outputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class ActivityTimedOutEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+BilledDuration = int
+BilledMemoryUsed = int
+
+
+class BillingDetails(TypedDict, total=False):
+    billedMemoryUsedInMB: Optional[BilledMemoryUsed]
+    billedDurationInMilliseconds: Optional[BilledDuration]
+
+
+class CloudWatchEventsExecutionDataDetails(TypedDict, total=False):
+    included: Optional[includedDetails]
+
+
+class CloudWatchLogsLogGroup(TypedDict, total=False):
+    logGroupArn: Optional[str]
+
+
+class Tag(TypedDict, total=False):
+    key: Optional[TagKey]
+    value: Optional[TagValue]
+
+
+TagList = List[Tag]
+
+
+class CreateActivityOutput(TypedDict, total=False):
+    activityArn: str
+    creationDate: Timestamp
+
+
+class RoutingConfigurationListItem(TypedDict, total=False):
+    stateMachineVersionArn: str
+    weight: VersionWeight
+
+
+RoutingConfigurationList = List[RoutingConfigurationListItem]
+
+
+class CreateStateMachineAliasOutput(TypedDict, total=False):
+    stateMachineAliasArn: str
+    creationDate: Timestamp
+
+
+class TracingConfiguration(TypedDict, total=False):
+    enabled: Optional[Enabled]
+
+
+class LogDestination(TypedDict, total=False):
+    cloudWatchLogsLogGroup: Optional[CloudWatchLogsLogGroup]
+
+
+LogDestinationList = List[LogDestination]
+
+
+class LoggingConfiguration(TypedDict, total=False):
+    level: Optional[LogLevel]
+    includeExecutionData: Optional[IncludeExecutionData]
+    destinations: Optional[LogDestinationList]
+
+
+CreateStateMachineInput = TypedDict(
+    "CreateStateMachineInput",
+    {
+        "name": Name,
+        "definition": Definition,
+        "roleArn": str,
+        "type": Optional[StateMachineType],
+        "loggingConfiguration": Optional[LoggingConfiguration],
+        "tags": Optional[TagList],
+        "tracingConfiguration": Optional[TracingConfiguration],
+        "publish": Optional[Publish],
+        "versionDescription": Optional[VersionDescription],
+    },
+    total=False,
+)
+
+
+class CreateStateMachineOutput(TypedDict, total=False):
+    stateMachineArn: str
+    creationDate: Timestamp
+    stateMachineVersionArn: Optional[str]
+
+
+class DeleteActivityOutput(TypedDict, total=False):
+    pass
+
+
+class DeleteStateMachineAliasOutput(TypedDict, total=False):
+    pass
+
+
+class DeleteStateMachineOutput(TypedDict, total=False):
+    pass
+
+
+class DeleteStateMachineVersionOutput(TypedDict, total=False):
+    pass
+
+
+class DescribeActivityOutput(TypedDict, total=False):
+    activityArn: str
+    name: Name
+    creationDate: Timestamp
+
+
+class DescribeExecutionOutput(TypedDict, total=False):
+    executionArn: str
+    stateMachineArn: str
+    name: Optional[Name]
+    status: ExecutionStatus
+    startDate: Timestamp
+    stopDate: Optional[Timestamp]
+    input: Optional[SensitiveData]
+    inputDetails: Optional[CloudWatchEventsExecutionDataDetails]
+    output: Optional[SensitiveData]
+    outputDetails: Optional[CloudWatchEventsExecutionDataDetails]
+    traceHeader: Optional[TraceHeader]
+    mapRunArn: Optional[str]
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+    stateMachineVersionArn: Optional[str]
+    stateMachineAliasArn: Optional[str]
+    redriveCount: Optional[RedriveCount]
+    redriveDate: Optional[Timestamp]
+    redriveStatus: Optional[ExecutionRedriveStatus]
+    redriveStatusReason: Optional[SensitiveData]
+
+
+LongObject = int
+UnsignedLong = int
+
+
+class MapRunExecutionCounts(TypedDict, total=False):
+    pending: UnsignedLong
+    running: UnsignedLong
+    succeeded: UnsignedLong
+    failed: UnsignedLong
+    timedOut: UnsignedLong
+    aborted: UnsignedLong
+    total: UnsignedLong
+    resultsWritten: UnsignedLong
+    failuresNotRedrivable: Optional[LongObject]
+    pendingRedrive: Optional[LongObject]
+
+
+class MapRunItemCounts(TypedDict, total=False):
+    pending: UnsignedLong
+    running: UnsignedLong
+    succeeded: UnsignedLong
+    failed: UnsignedLong
+    timedOut: UnsignedLong
+    aborted: UnsignedLong
+    total: UnsignedLong
+    resultsWritten: UnsignedLong
+    failuresNotRedrivable: Optional[LongObject]
+    pendingRedrive: Optional[LongObject]
+
+
+ToleratedFailureCount = int
+
+
+class DescribeMapRunOutput(TypedDict, total=False):
+    mapRunArn: str
+    executionArn: str
+    status: MapRunStatus
+    startDate: Timestamp
+    stopDate: Optional[Timestamp]
+    maxConcurrency: MaxConcurrency
+    toleratedFailurePercentage: ToleratedFailurePercentage
+    toleratedFailureCount: ToleratedFailureCount
+    itemCounts: MapRunItemCounts
+    executionCounts: MapRunExecutionCounts
+    redriveCount: Optional[RedriveCount]
+    redriveDate: Optional[Timestamp]
+
+
+class DescribeStateMachineAliasOutput(TypedDict, total=False):
+    stateMachineAliasArn: Optional[str]
+    name: Optional[Name]
+    description: Optional[AliasDescription]
+    routingConfiguration: Optional[RoutingConfigurationList]
+    creationDate: Optional[Timestamp]
+    updateDate: Optional[Timestamp]
+
+
+class DescribeStateMachineForExecutionOutput(TypedDict, total=False):
+    stateMachineArn: str
+    name: Name
+    definition: Definition
+    roleArn: str
+    updateDate: Timestamp
+    loggingConfiguration: Optional[LoggingConfiguration]
+    tracingConfiguration: Optional[TracingConfiguration]
+    mapRunArn: Optional[str]
+    label: Optional[MapRunLabel]
+    revisionId: Optional[RevisionId]
+
+
+DescribeStateMachineOutput = TypedDict(
+    "DescribeStateMachineOutput",
+    {
+        "stateMachineArn": str,
+        "name": Name,
+        "status": Optional[StateMachineStatus],
+        "definition": Definition,
+        "roleArn": str,
+        "type": StateMachineType,
+        "creationDate": Timestamp,
+        "loggingConfiguration": Optional[LoggingConfiguration],
+        "tracingConfiguration": Optional[TracingConfiguration],
+        "label": Optional[MapRunLabel],
+        "revisionId": Optional[RevisionId],
+        "description": Optional[VersionDescription],
+    },
+    total=False,
+)
+EventId = int
+
+
+class ExecutionAbortedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class ExecutionFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class ExecutionListItem(TypedDict, total=False):
+    executionArn: str
+    stateMachineArn: str
+    name: Name
+    status: ExecutionStatus
+    startDate: Timestamp
+    stopDate: Optional[Timestamp]
+    mapRunArn: Optional[str]
+    itemCount: Optional[UnsignedInteger]
+    stateMachineVersionArn: Optional[str]
+    stateMachineAliasArn: Optional[str]
+    redriveCount: Optional[RedriveCount]
+    redriveDate: Optional[Timestamp]
+
+
+ExecutionList = List[ExecutionListItem]
+
+
+class ExecutionRedrivenEventDetails(TypedDict, total=False):
+    redriveCount: Optional[RedriveCount]
+
+
+class ExecutionStartedEventDetails(TypedDict, total=False):
+    input: Optional[SensitiveData]
+    inputDetails: Optional[HistoryEventExecutionDataDetails]
+    roleArn: Optional[str]
+    stateMachineAliasArn: Optional[str]
+    stateMachineVersionArn: Optional[str]
+
+
+class ExecutionSucceededEventDetails(TypedDict, total=False):
+    output: Optional[SensitiveData]
+    outputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class ExecutionTimedOutEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class GetActivityTaskOutput(TypedDict, total=False):
+    taskToken: Optional[TaskToken]
+    input: Optional[SensitiveDataJobInput]
+
+
+class MapRunRedrivenEventDetails(TypedDict, total=False):
+    mapRunArn: Optional[str]
+    redriveCount: Optional[RedriveCount]
+
+
+class MapRunFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class MapRunStartedEventDetails(TypedDict, total=False):
+    mapRunArn: Optional[str]
+
+
+class StateExitedEventDetails(TypedDict, total=False):
+    name: Name
+    output: Optional[SensitiveData]
+    outputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class StateEnteredEventDetails(TypedDict, total=False):
+    name: Name
+    input: Optional[SensitiveData]
+    inputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class LambdaFunctionTimedOutEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class LambdaFunctionSucceededEventDetails(TypedDict, total=False):
+    output: Optional[SensitiveData]
+    outputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class LambdaFunctionStartFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class TaskCredentials(TypedDict, total=False):
+    roleArn: Optional[str]
+
+
+class LambdaFunctionScheduledEventDetails(TypedDict, total=False):
+    resource: str
+    input: Optional[SensitiveData]
+    inputDetails: Optional[HistoryEventExecutionDataDetails]
+    timeoutInSeconds: Optional[TimeoutInSeconds]
+    taskCredentials: Optional[TaskCredentials]
+
+
+class LambdaFunctionScheduleFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class LambdaFunctionFailedEventDetails(TypedDict, total=False):
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class MapIterationEventDetails(TypedDict, total=False):
+    name: Optional[Name]
+    index: Optional[UnsignedInteger]
+
+
+class MapStateStartedEventDetails(TypedDict, total=False):
+    length: Optional[UnsignedInteger]
+
+
+class TaskTimedOutEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class TaskSucceededEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    output: Optional[SensitiveData]
+    outputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class TaskSubmittedEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    output: Optional[SensitiveData]
+    outputDetails: Optional[HistoryEventExecutionDataDetails]
+
+
+class TaskSubmitFailedEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class TaskStartedEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+
+
+class TaskStartFailedEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+class TaskScheduledEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    region: Name
+    parameters: ConnectorParameters
+    timeoutInSeconds: Optional[TimeoutInSeconds]
+    heartbeatInSeconds: Optional[TimeoutInSeconds]
+    taskCredentials: Optional[TaskCredentials]
+
+
+class TaskFailedEventDetails(TypedDict, total=False):
+    resourceType: Name
+    resource: Name
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+
+
+HistoryEvent = TypedDict(
+    "HistoryEvent",
+    {
+        "timestamp": Timestamp,
+        "type": HistoryEventType,
+        "id": EventId,
+        "previousEventId": Optional[EventId],
+        "activityFailedEventDetails": Optional[ActivityFailedEventDetails],
+        "activityScheduleFailedEventDetails": Optional[
+            ActivityScheduleFailedEventDetails
+        ],
+        "activityScheduledEventDetails": Optional[ActivityScheduledEventDetails],
+        "activityStartedEventDetails": Optional[ActivityStartedEventDetails],
+        "activitySucceededEventDetails": Optional[ActivitySucceededEventDetails],
+        "activityTimedOutEventDetails": Optional[ActivityTimedOutEventDetails],
+        "taskFailedEventDetails": Optional[TaskFailedEventDetails],
+        "taskScheduledEventDetails": Optional[TaskScheduledEventDetails],
+        "taskStartFailedEventDetails": Optional[TaskStartFailedEventDetails],
+        "taskStartedEventDetails": Optional[TaskStartedEventDetails],
+        "taskSubmitFailedEventDetails": Optional[TaskSubmitFailedEventDetails],
+        "taskSubmittedEventDetails": Optional[TaskSubmittedEventDetails],
+        "taskSucceededEventDetails": Optional[TaskSucceededEventDetails],
+        "taskTimedOutEventDetails": Optional[TaskTimedOutEventDetails],
+        "executionFailedEventDetails": Optional[ExecutionFailedEventDetails],
+        "executionStartedEventDetails": Optional[ExecutionStartedEventDetails],
+        "executionSucceededEventDetails": Optional[ExecutionSucceededEventDetails],
+        "executionAbortedEventDetails": Optional[ExecutionAbortedEventDetails],
+        "executionTimedOutEventDetails": Optional[ExecutionTimedOutEventDetails],
+        "executionRedrivenEventDetails": Optional[ExecutionRedrivenEventDetails],
+        "mapStateStartedEventDetails": Optional[MapStateStartedEventDetails],
+        "mapIterationStartedEventDetails": Optional[MapIterationEventDetails],
+        "mapIterationSucceededEventDetails": Optional[MapIterationEventDetails],
+        "mapIterationFailedEventDetails": Optional[MapIterationEventDetails],
+        "mapIterationAbortedEventDetails": Optional[MapIterationEventDetails],
+        "lambdaFunctionFailedEventDetails": Optional[LambdaFunctionFailedEventDetails],
+        "lambdaFunctionScheduleFailedEventDetails": Optional[
+            LambdaFunctionScheduleFailedEventDetails
+        ],
+        "lambdaFunctionScheduledEventDetails": Optional[
+            LambdaFunctionScheduledEventDetails
+        ],
+        "lambdaFunctionStartFailedEventDetails": Optional[
+            LambdaFunctionStartFailedEventDetails
+        ],
+        "lambdaFunctionSucceededEventDetails": Optional[
+            LambdaFunctionSucceededEventDetails
+        ],
+        "lambdaFunctionTimedOutEventDetails": Optional[
+            LambdaFunctionTimedOutEventDetails
+        ],
+        "stateEnteredEventDetails": Optional[StateEnteredEventDetails],
+        "stateExitedEventDetails": Optional[StateExitedEventDetails],
+        "mapRunStartedEventDetails": Optional[MapRunStartedEventDetails],
+        "mapRunFailedEventDetails": Optional[MapRunFailedEventDetails],
+        "mapRunRedrivenEventDetails": Optional[MapRunRedrivenEventDetails],
+    },
+    total=False,
+)
+HistoryEventList = List[HistoryEvent]
+
+
+class GetExecutionHistoryOutput(TypedDict, total=False):
+    events: HistoryEventList
+    nextToken: Optional[PageToken]
+
+
+class InspectionDataResponse(TypedDict, total=False):
+    protocol: Optional[HTTPProtocol]
+    statusCode: Optional[HTTPStatusCode]
+    statusMessage: Optional[HTTPStatusMessage]
+    headers: Optional[HTTPHeaders]
+    body: Optional[HTTPBody]
+
+
+class InspectionDataRequest(TypedDict, total=False):
+    protocol: Optional[HTTPProtocol]
+    method: Optional[HTTPMethod]
+    url: Optional[URL]
+    headers: Optional[HTTPHeaders]
+    body: Optional[HTTPBody]
+
+
+class InspectionData(TypedDict, total=False):
+    input: Optional[SensitiveData]
+    afterInputPath: Optional[SensitiveData]
+    afterParameters: Optional[SensitiveData]
+    result: Optional[SensitiveData]
+    afterResultSelector: Optional[SensitiveData]
+    afterResultPath: Optional[SensitiveData]
+    request: Optional[InspectionDataRequest]
+    response: Optional[InspectionDataResponse]
+
+
+class ListActivitiesOutput(TypedDict, total=False):
+    activities: ActivityList
+    nextToken: Optional[PageToken]
+
+
+class ListExecutionsOutput(TypedDict, total=False):
+    executions: ExecutionList
+    nextToken: Optional[ListExecutionsPageToken]
+
+
+class MapRunListItem(TypedDict, total=False):
+    executionArn: str
+    mapRunArn: str
+    stateMachineArn: str
+    startDate: Timestamp
+    stopDate: Optional[Timestamp]
+
+
+MapRunList = List[MapRunListItem]
+
+
+class ListMapRunsOutput(TypedDict, total=False):
+    mapRuns: MapRunList
+    nextToken: Optional[PageToken]
+
+
+class StateMachineAliasListItem(TypedDict, total=False):
+    stateMachineAliasArn: str
+    creationDate: Timestamp
+
+
+StateMachineAliasList = List[StateMachineAliasListItem]
+
+
+class ListStateMachineAliasesOutput(TypedDict, total=False):
+    stateMachineAliases: StateMachineAliasList
+    nextToken: Optional[PageToken]
+
+
+class StateMachineVersionListItem(TypedDict, total=False):
+    stateMachineVersionArn: str
+    creationDate: Timestamp
+
+
+StateMachineVersionList = List[StateMachineVersionListItem]
+
+
+class ListStateMachineVersionsOutput(TypedDict, total=False):
+    stateMachineVersions: StateMachineVersionList
+    nextToken: Optional[PageToken]
+
+
+StateMachineListItem = TypedDict(
+    "StateMachineListItem",
+    {
+        "stateMachineArn": str,
+        "name": Name,
+        "type": StateMachineType,
+        "creationDate": Timestamp,
+    },
+    total=False,
+)
+StateMachineList = List[StateMachineListItem]
+
+
+class ListStateMachinesOutput(TypedDict, total=False):
+    stateMachines: StateMachineList
+    nextToken: Optional[PageToken]
+
+
+class ListTagsForResourceOutput(TypedDict, total=False):
+    tags: Optional[TagList]
+
+
+class PublishStateMachineVersionOutput(TypedDict, total=False):
+    creationDate: Timestamp
+    stateMachineVersionArn: str
+
+
+class RedriveExecutionOutput(TypedDict, total=False):
+    redriveDate: Timestamp
+
+
+class SendTaskFailureOutput(TypedDict, total=False):
+    pass
+
+
+class SendTaskHeartbeatOutput(TypedDict, total=False):
+    pass
+
+
+class SendTaskSuccessOutput(TypedDict, total=False):
+    pass
+
+
+class StartExecutionOutput(TypedDict, total=False):
+    executionArn: str
+    startDate: Timestamp
+
+
+class StartSyncExecutionOutput(TypedDict, total=False):
+    executionArn: str
+    stateMachineArn: Optional[str]
+    name: Optional[Name]
+    startDate: Timestamp
+    stopDate: Timestamp
+    status: SyncExecutionStatus
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+    input: Optional[SensitiveData]
+    inputDetails: Optional[CloudWatchEventsExecutionDataDetails]
+    output: Optional[SensitiveData]
+    outputDetails: Optional[CloudWatchEventsExecutionDataDetails]
+    traceHeader: Optional[TraceHeader]
+    billingDetails: Optional[BillingDetails]
+
+
+class StopExecutionOutput(TypedDict, total=False):
+    stopDate: Timestamp
+
+
+TagKeyList = List[TagKey]
+
+
+class TagResourceOutput(TypedDict, total=False):
+    pass
+
+
+class TestStateOutput(TypedDict, total=False):
+    output: Optional[SensitiveData]
+    error: Optional[SensitiveError]
+    cause: Optional[SensitiveCause]
+    inspectionData: Optional[InspectionData]
+    nextState: Optional[StateName]
+    status: Optional[TestExecutionStatus]
+
+
+class UntagResourceOutput(TypedDict, total=False):
+    pass
+
+
+class UpdateMapRunOutput(TypedDict, total=False):
+    pass
+
+
+class UpdateStateMachineAliasOutput(TypedDict, total=False):
+    updateDate: Timestamp
+
+
+class UpdateStateMachineOutput(TypedDict, total=False):
+    updateDate: Timestamp
+    revisionId: Optional[RevisionId]
+    stateMachineVersionArn: Optional[str]
diff --git a/moto/stepfunctions/parser/asl/__init__.py b/moto/stepfunctions/parser/asl/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/antlr/__init__.py b/moto/stepfunctions/parser/asl/antlr/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicLexer.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicLexer.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicLexer.py
@@ -0,0 +1,3851 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLIntrinsicLexer.g4 by ANTLR 4.13.1
+import sys
+from typing import TextIO
+
+from antlr4 import (
+    DFA,
+    ATNDeserializer,
+    Lexer,
+    LexerATNSimulator,
+    PredictionContextCache,
+)
+
+
+def serializedATN():
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+
+
+class ASLIntrinsicLexer(Lexer):
+
+    atn = ATNDeserializer().deserialize(serializedATN())
+
+    decisionsToDFA = [DFA(ds, i) for i, ds in enumerate(atn.decisionToState)]
+
+    DOLLAR = 1
+    DOT = 2
+    STAR = 3
+    COMMA = 4
+    LPAREN = 5
+    RPAREN = 6
+    LBRACK = 7
+    RBRACK = 8
+    LDIAM = 9
+    RDIAM = 10
+    ATDOT = 11
+    ATDOTLENGTHDASH = 12
+    ANDAND = 13
+    OROR = 14
+    EQEQ = 15
+    EQ = 16
+    TRUE = 17
+    FALSE = 18
+    States = 19
+    Format = 20
+    StringToJson = 21
+    JsonToString = 22
+    Array = 23
+    ArrayPartition = 24
+    ArrayContains = 25
+    ArrayRange = 26
+    ArrayGetItem = 27
+    ArrayLength = 28
+    ArrayUnique = 29
+    Base64Encode = 30
+    Base64Decode = 31
+    Hash = 32
+    JsonMerge = 33
+    MathRandom = 34
+    MathAdd = 35
+    StringSplit = 36
+    UUID = 37
+    STRING = 38
+    INT = 39
+    NUMBER = 40
+    IDENTIFIER = 41
+    WS = 42
+
+    channelNames = ["DEFAULT_TOKEN_CHANNEL", "HIDDEN"]
+
+    modeNames = ["DEFAULT_MODE"]
+
+    literalNames = [
+        "<INVALID>",
+        "'$'",
+        "'.'",
+        "'*'",
+        "','",
+        "'('",
+        "')'",
+        "'['",
+        "']'",
+        "'<'",
+        "'>'",
+        "'@.'",
+        "'@.length-'",
+        "'&&'",
+        "'||'",
+        "'=='",
+        "'='",
+        "'true'",
+        "'false'",
+        "'States'",
+        "'Format'",
+        "'StringToJson'",
+        "'JsonToString'",
+        "'Array'",
+        "'ArrayPartition'",
+        "'ArrayContains'",
+        "'ArrayRange'",
+        "'ArrayGetItem'",
+        "'ArrayLength'",
+        "'ArrayUnique'",
+        "'Base64Encode'",
+        "'Base64Decode'",
+        "'Hash'",
+        "'JsonMerge'",
+        "'MathRandom'",
+        "'MathAdd'",
+        "'StringSplit'",
+        "'UUID'",
+    ]
+
+    symbolicNames = [
+        "<INVALID>",
+        "DOLLAR",
+        "DOT",
+        "STAR",
+        "COMMA",
+        "LPAREN",
+        "RPAREN",
+        "LBRACK",
+        "RBRACK",
+        "LDIAM",
+        "RDIAM",
+        "ATDOT",
+        "ATDOTLENGTHDASH",
+        "ANDAND",
+        "OROR",
+        "EQEQ",
+        "EQ",
+        "TRUE",
+        "FALSE",
+        "States",
+        "Format",
+        "StringToJson",
+        "JsonToString",
+        "Array",
+        "ArrayPartition",
+        "ArrayContains",
+        "ArrayRange",
+        "ArrayGetItem",
+        "ArrayLength",
+        "ArrayUnique",
+        "Base64Encode",
+        "Base64Decode",
+        "Hash",
+        "JsonMerge",
+        "MathRandom",
+        "MathAdd",
+        "StringSplit",
+        "UUID",
+        "STRING",
+        "INT",
+        "NUMBER",
+        "IDENTIFIER",
+        "WS",
+    ]
+
+    ruleNames = [
+        "DOLLAR",
+        "DOT",
+        "STAR",
+        "COMMA",
+        "LPAREN",
+        "RPAREN",
+        "LBRACK",
+        "RBRACK",
+        "LDIAM",
+        "RDIAM",
+        "ATDOT",
+        "ATDOTLENGTHDASH",
+        "ANDAND",
+        "OROR",
+        "EQEQ",
+        "EQ",
+        "TRUE",
+        "FALSE",
+        "States",
+        "Format",
+        "StringToJson",
+        "JsonToString",
+        "Array",
+        "ArrayPartition",
+        "ArrayContains",
+        "ArrayRange",
+        "ArrayGetItem",
+        "ArrayLength",
+        "ArrayUnique",
+        "Base64Encode",
+        "Base64Decode",
+        "Hash",
+        "JsonMerge",
+        "MathRandom",
+        "MathAdd",
+        "StringSplit",
+        "UUID",
+        "STRING",
+        "ESC",
+        "UNICODE",
+        "HEX",
+        "SAFECODEPOINT",
+        "INT",
+        "NUMBER",
+        "EXP",
+        "IDENTIFIER",
+        "WS",
+    ]
+
+    grammarFileName = "ASLIntrinsicLexer.g4"
+
+    def __init__(self, input=None, output: TextIO = sys.stdout):
+        super().__init__(input, output)
+        self.checkVersion("4.13.1")
+        self._interp = LexerATNSimulator(
+            self, self.atn, self.decisionsToDFA, PredictionContextCache()
+        )
+        self._actions = None
+        self._predicates = None
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParser.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParser.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParser.py
@@ -0,0 +1,2661 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLIntrinsicParser.g4 by ANTLR 4.13.1
+# encoding: utf-8
+import sys
+from typing import TextIO
+
+from antlr4 import (
+    ATN,
+    DFA,
+    ATNDeserializer,
+    NoViableAltException,
+    Parser,
+    ParserATNSimulator,
+    ParserRuleContext,
+    ParseTreeListener,
+    ParseTreeVisitor,
+    PredictionContextCache,
+    RecognitionException,
+    RuleContext,
+    Token,
+    TokenStream,
+)
+
+
+def serializedATN():
+    return [
+        4,
+        1,
+        42,
+        123,
+        2,
+        0,
+        7,
+        0,
+        2,
+        1,
+        7,
+        1,
+        2,
+        2,
+        7,
+        2,
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+        4,
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+        5,
+        2,
+        6,
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+        1,
+        1,
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+        3,
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+        1,
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+        0,
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+        10,
+        1,
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+        0,
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+        108,
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+        0,
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+        1,
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+        115,
+        116,
+        1,
+        0,
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+        0,
+        116,
+        23,
+        1,
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+        0,
+        0,
+        117,
+        115,
+        1,
+        0,
+        0,
+        0,
+        118,
+        121,
+        5,
+        41,
+        0,
+        0,
+        119,
+        121,
+        3,
+        4,
+        2,
+        0,
+        120,
+        118,
+        1,
+        0,
+        0,
+        0,
+        120,
+        119,
+        1,
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+        0,
+        0,
+        121,
+        25,
+        1,
+        0,
+        0,
+        0,
+        11,
+        41,
+        48,
+        57,
+        69,
+        74,
+        90,
+        100,
+        104,
+        111,
+        115,
+        120,
+    ]
+
+
+class ASLIntrinsicParser(Parser):
+
+    grammarFileName = "ASLIntrinsicParser.g4"
+
+    atn = ATNDeserializer().deserialize(serializedATN())
+
+    decisionsToDFA = [DFA(ds, i) for i, ds in enumerate(atn.decisionToState)]
+
+    sharedContextCache = PredictionContextCache()
+
+    literalNames = [
+        "<INVALID>",
+        "'$'",
+        "'.'",
+        "'*'",
+        "','",
+        "'('",
+        "')'",
+        "'['",
+        "']'",
+        "'<'",
+        "'>'",
+        "'@.'",
+        "'@.length-'",
+        "'&&'",
+        "'||'",
+        "'=='",
+        "'='",
+        "'true'",
+        "'false'",
+        "'States'",
+        "'Format'",
+        "'StringToJson'",
+        "'JsonToString'",
+        "'Array'",
+        "'ArrayPartition'",
+        "'ArrayContains'",
+        "'ArrayRange'",
+        "'ArrayGetItem'",
+        "'ArrayLength'",
+        "'ArrayUnique'",
+        "'Base64Encode'",
+        "'Base64Decode'",
+        "'Hash'",
+        "'JsonMerge'",
+        "'MathRandom'",
+        "'MathAdd'",
+        "'StringSplit'",
+        "'UUID'",
+    ]
+
+    symbolicNames = [
+        "<INVALID>",
+        "DOLLAR",
+        "DOT",
+        "STAR",
+        "COMMA",
+        "LPAREN",
+        "RPAREN",
+        "LBRACK",
+        "RBRACK",
+        "LDIAM",
+        "RDIAM",
+        "ATDOT",
+        "ATDOTLENGTHDASH",
+        "ANDAND",
+        "OROR",
+        "EQEQ",
+        "EQ",
+        "TRUE",
+        "FALSE",
+        "States",
+        "Format",
+        "StringToJson",
+        "JsonToString",
+        "Array",
+        "ArrayPartition",
+        "ArrayContains",
+        "ArrayRange",
+        "ArrayGetItem",
+        "ArrayLength",
+        "ArrayUnique",
+        "Base64Encode",
+        "Base64Decode",
+        "Hash",
+        "JsonMerge",
+        "MathRandom",
+        "MathAdd",
+        "StringSplit",
+        "UUID",
+        "STRING",
+        "INT",
+        "NUMBER",
+        "IDENTIFIER",
+        "WS",
+    ]
+
+    RULE_func_decl = 0
+    RULE_states_func_decl = 1
+    RULE_state_fun_name = 2
+    RULE_func_arg_list = 3
+    RULE_func_arg = 4
+    RULE_context_path = 5
+    RULE_json_path = 6
+    RULE_json_path_part = 7
+    RULE_json_path_iden = 8
+    RULE_json_path_iden_qual = 9
+    RULE_json_path_qual = 10
+    RULE_json_path_query = 11
+    RULE_identifier = 12
+
+    ruleNames = [
+        "func_decl",
+        "states_func_decl",
+        "state_fun_name",
+        "func_arg_list",
+        "func_arg",
+        "context_path",
+        "json_path",
+        "json_path_part",
+        "json_path_iden",
+        "json_path_iden_qual",
+        "json_path_qual",
+        "json_path_query",
+        "identifier",
+    ]
+
+    EOF = Token.EOF
+    DOLLAR = 1
+    DOT = 2
+    STAR = 3
+    COMMA = 4
+    LPAREN = 5
+    RPAREN = 6
+    LBRACK = 7
+    RBRACK = 8
+    LDIAM = 9
+    RDIAM = 10
+    ATDOT = 11
+    ATDOTLENGTHDASH = 12
+    ANDAND = 13
+    OROR = 14
+    EQEQ = 15
+    EQ = 16
+    TRUE = 17
+    FALSE = 18
+    States = 19
+    Format = 20
+    StringToJson = 21
+    JsonToString = 22
+    Array = 23
+    ArrayPartition = 24
+    ArrayContains = 25
+    ArrayRange = 26
+    ArrayGetItem = 27
+    ArrayLength = 28
+    ArrayUnique = 29
+    Base64Encode = 30
+    Base64Decode = 31
+    Hash = 32
+    JsonMerge = 33
+    MathRandom = 34
+    MathAdd = 35
+    StringSplit = 36
+    UUID = 37
+    STRING = 38
+    INT = 39
+    NUMBER = 40
+    IDENTIFIER = 41
+    WS = 42
+
+    def __init__(self, input: TokenStream, output: TextIO = sys.stdout):
+        super().__init__(input, output)
+        self.checkVersion("4.13.1")
+        self._interp = ParserATNSimulator(
+            self, self.atn, self.decisionsToDFA, self.sharedContextCache
+        )
+        self._predicates = None
+
+    class Func_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def states_func_decl(self):
+            return self.getTypedRuleContext(
+                ASLIntrinsicParser.States_func_declContext, 0
+            )
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_func_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_decl"):
+                listener.enterFunc_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_decl"):
+                listener.exitFunc_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_decl"):
+                return visitor.visitFunc_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def func_decl(self):
+
+        localctx = ASLIntrinsicParser.Func_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 0, self.RULE_func_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 26
+            self.states_func_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class States_func_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def States(self):
+            return self.getToken(ASLIntrinsicParser.States, 0)
+
+        def DOT(self):
+            return self.getToken(ASLIntrinsicParser.DOT, 0)
+
+        def state_fun_name(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.State_fun_nameContext, 0)
+
+        def func_arg_list(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Func_arg_listContext, 0)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_states_func_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterStates_func_decl"):
+                listener.enterStates_func_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitStates_func_decl"):
+                listener.exitStates_func_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitStates_func_decl"):
+                return visitor.visitStates_func_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def states_func_decl(self):
+
+        localctx = ASLIntrinsicParser.States_func_declContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 2, self.RULE_states_func_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 28
+            self.match(ASLIntrinsicParser.States)
+            self.state = 29
+            self.match(ASLIntrinsicParser.DOT)
+            self.state = 30
+            self.state_fun_name()
+            self.state = 31
+            self.func_arg_list()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class State_fun_nameContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def Format(self):
+            return self.getToken(ASLIntrinsicParser.Format, 0)
+
+        def StringToJson(self):
+            return self.getToken(ASLIntrinsicParser.StringToJson, 0)
+
+        def JsonToString(self):
+            return self.getToken(ASLIntrinsicParser.JsonToString, 0)
+
+        def Array(self):
+            return self.getToken(ASLIntrinsicParser.Array, 0)
+
+        def ArrayPartition(self):
+            return self.getToken(ASLIntrinsicParser.ArrayPartition, 0)
+
+        def ArrayContains(self):
+            return self.getToken(ASLIntrinsicParser.ArrayContains, 0)
+
+        def ArrayRange(self):
+            return self.getToken(ASLIntrinsicParser.ArrayRange, 0)
+
+        def ArrayGetItem(self):
+            return self.getToken(ASLIntrinsicParser.ArrayGetItem, 0)
+
+        def ArrayLength(self):
+            return self.getToken(ASLIntrinsicParser.ArrayLength, 0)
+
+        def ArrayUnique(self):
+            return self.getToken(ASLIntrinsicParser.ArrayUnique, 0)
+
+        def Base64Encode(self):
+            return self.getToken(ASLIntrinsicParser.Base64Encode, 0)
+
+        def Base64Decode(self):
+            return self.getToken(ASLIntrinsicParser.Base64Decode, 0)
+
+        def Hash(self):
+            return self.getToken(ASLIntrinsicParser.Hash, 0)
+
+        def JsonMerge(self):
+            return self.getToken(ASLIntrinsicParser.JsonMerge, 0)
+
+        def MathRandom(self):
+            return self.getToken(ASLIntrinsicParser.MathRandom, 0)
+
+        def MathAdd(self):
+            return self.getToken(ASLIntrinsicParser.MathAdd, 0)
+
+        def StringSplit(self):
+            return self.getToken(ASLIntrinsicParser.StringSplit, 0)
+
+        def UUID(self):
+            return self.getToken(ASLIntrinsicParser.UUID, 0)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_state_fun_name
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterState_fun_name"):
+                listener.enterState_fun_name(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitState_fun_name"):
+                listener.exitState_fun_name(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitState_fun_name"):
+                return visitor.visitState_fun_name(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def state_fun_name(self):
+
+        localctx = ASLIntrinsicParser.State_fun_nameContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 4, self.RULE_state_fun_name)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 33
+            _la = self._input.LA(1)
+            if not ((((_la) & ~0x3F) == 0 and ((1 << _la) & 274876858368) != 0)):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Func_arg_listContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LPAREN(self):
+            return self.getToken(ASLIntrinsicParser.LPAREN, 0)
+
+        def func_arg(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLIntrinsicParser.Func_argContext)
+            else:
+                return self.getTypedRuleContext(ASLIntrinsicParser.Func_argContext, i)
+
+        def RPAREN(self):
+            return self.getToken(ASLIntrinsicParser.RPAREN, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLIntrinsicParser.COMMA)
+            else:
+                return self.getToken(ASLIntrinsicParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_func_arg_list
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_list"):
+                listener.enterFunc_arg_list(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_list"):
+                listener.exitFunc_arg_list(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_list"):
+                return visitor.visitFunc_arg_list(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def func_arg_list(self):
+
+        localctx = ASLIntrinsicParser.Func_arg_listContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 6, self.RULE_func_arg_list)
+        self._la = 0  # Token type
+        try:
+            self.state = 48
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 1, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 35
+                self.match(ASLIntrinsicParser.LPAREN)
+                self.state = 36
+                self.func_arg()
+                self.state = 41
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 4:
+                    self.state = 37
+                    self.match(ASLIntrinsicParser.COMMA)
+                    self.state = 38
+                    self.func_arg()
+                    self.state = 43
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 44
+                self.match(ASLIntrinsicParser.RPAREN)
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 46
+                self.match(ASLIntrinsicParser.LPAREN)
+                self.state = 47
+                self.match(ASLIntrinsicParser.RPAREN)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Func_argContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_func_arg
+
+        def copyFrom(self, ctx: ParserRuleContext):
+            super().copyFrom(ctx)
+
+    class Func_arg_context_pathContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def context_path(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Context_pathContext, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_context_path"):
+                listener.enterFunc_arg_context_path(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_context_path"):
+                listener.exitFunc_arg_context_path(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_context_path"):
+                return visitor.visitFunc_arg_context_path(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Func_arg_floatContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def NUMBER(self):
+            return self.getToken(ASLIntrinsicParser.NUMBER, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_float"):
+                listener.enterFunc_arg_float(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_float"):
+                listener.exitFunc_arg_float(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_float"):
+                return visitor.visitFunc_arg_float(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Func_arg_func_declContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def func_decl(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Func_declContext, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_func_decl"):
+                listener.enterFunc_arg_func_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_func_decl"):
+                listener.exitFunc_arg_func_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_func_decl"):
+                return visitor.visitFunc_arg_func_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Func_arg_intContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def INT(self):
+            return self.getToken(ASLIntrinsicParser.INT, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_int"):
+                listener.enterFunc_arg_int(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_int"):
+                listener.exitFunc_arg_int(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_int"):
+                return visitor.visitFunc_arg_int(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Func_arg_boolContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def TRUE(self):
+            return self.getToken(ASLIntrinsicParser.TRUE, 0)
+
+        def FALSE(self):
+            return self.getToken(ASLIntrinsicParser.FALSE, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_bool"):
+                listener.enterFunc_arg_bool(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_bool"):
+                listener.exitFunc_arg_bool(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_bool"):
+                return visitor.visitFunc_arg_bool(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Func_arg_stringContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def STRING(self):
+            return self.getToken(ASLIntrinsicParser.STRING, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_string"):
+                listener.enterFunc_arg_string(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_string"):
+                listener.exitFunc_arg_string(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_string"):
+                return visitor.visitFunc_arg_string(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Func_arg_json_pathContext(Func_argContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Func_argContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def json_path(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Json_pathContext, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterFunc_arg_json_path"):
+                listener.enterFunc_arg_json_path(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitFunc_arg_json_path"):
+                listener.exitFunc_arg_json_path(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitFunc_arg_json_path"):
+                return visitor.visitFunc_arg_json_path(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def func_arg(self):
+
+        localctx = ASLIntrinsicParser.Func_argContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 8, self.RULE_func_arg)
+        self._la = 0  # Token type
+        try:
+            self.state = 57
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 2, self._ctx)
+            if la_ == 1:
+                localctx = ASLIntrinsicParser.Func_arg_stringContext(self, localctx)
+                self.enterOuterAlt(localctx, 1)
+                self.state = 50
+                self.match(ASLIntrinsicParser.STRING)
+                pass
+
+            elif la_ == 2:
+                localctx = ASLIntrinsicParser.Func_arg_intContext(self, localctx)
+                self.enterOuterAlt(localctx, 2)
+                self.state = 51
+                self.match(ASLIntrinsicParser.INT)
+                pass
+
+            elif la_ == 3:
+                localctx = ASLIntrinsicParser.Func_arg_floatContext(self, localctx)
+                self.enterOuterAlt(localctx, 3)
+                self.state = 52
+                self.match(ASLIntrinsicParser.NUMBER)
+                pass
+
+            elif la_ == 4:
+                localctx = ASLIntrinsicParser.Func_arg_boolContext(self, localctx)
+                self.enterOuterAlt(localctx, 4)
+                self.state = 53
+                _la = self._input.LA(1)
+                if not (_la == 17 or _la == 18):
+                    self._errHandler.recoverInline(self)
+                else:
+                    self._errHandler.reportMatch(self)
+                    self.consume()
+                pass
+
+            elif la_ == 5:
+                localctx = ASLIntrinsicParser.Func_arg_context_pathContext(
+                    self, localctx
+                )
+                self.enterOuterAlt(localctx, 5)
+                self.state = 54
+                self.context_path()
+                pass
+
+            elif la_ == 6:
+                localctx = ASLIntrinsicParser.Func_arg_json_pathContext(self, localctx)
+                self.enterOuterAlt(localctx, 6)
+                self.state = 55
+                self.json_path()
+                pass
+
+            elif la_ == 7:
+                localctx = ASLIntrinsicParser.Func_arg_func_declContext(self, localctx)
+                self.enterOuterAlt(localctx, 7)
+                self.state = 56
+                self.func_decl()
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Context_pathContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def DOLLAR(self):
+            return self.getToken(ASLIntrinsicParser.DOLLAR, 0)
+
+        def json_path(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Json_pathContext, 0)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_context_path
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterContext_path"):
+                listener.enterContext_path(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitContext_path"):
+                listener.exitContext_path(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitContext_path"):
+                return visitor.visitContext_path(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def context_path(self):
+
+        localctx = ASLIntrinsicParser.Context_pathContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 10, self.RULE_context_path)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 59
+            self.match(ASLIntrinsicParser.DOLLAR)
+            self.state = 60
+            self.json_path()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_pathContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def DOLLAR(self):
+            return self.getToken(ASLIntrinsicParser.DOLLAR, 0)
+
+        def DOT(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLIntrinsicParser.DOT)
+            else:
+                return self.getToken(ASLIntrinsicParser.DOT, i)
+
+        def json_path_part(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(
+                    ASLIntrinsicParser.Json_path_partContext
+                )
+            else:
+                return self.getTypedRuleContext(
+                    ASLIntrinsicParser.Json_path_partContext, i
+                )
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_json_path
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path"):
+                listener.enterJson_path(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path"):
+                listener.exitJson_path(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path"):
+                return visitor.visitJson_path(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_path(self):
+
+        localctx = ASLIntrinsicParser.Json_pathContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 12, self.RULE_json_path)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 62
+            self.match(ASLIntrinsicParser.DOLLAR)
+            self.state = 63
+            self.match(ASLIntrinsicParser.DOT)
+            self.state = 64
+            self.json_path_part()
+            self.state = 69
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 2:
+                self.state = 65
+                self.match(ASLIntrinsicParser.DOT)
+                self.state = 66
+                self.json_path_part()
+                self.state = 71
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_path_partContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def json_path_iden(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Json_path_idenContext, 0)
+
+        def json_path_iden_qual(self):
+            return self.getTypedRuleContext(
+                ASLIntrinsicParser.Json_path_iden_qualContext, 0
+            )
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_json_path_part
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_part"):
+                listener.enterJson_path_part(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_part"):
+                listener.exitJson_path_part(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_part"):
+                return visitor.visitJson_path_part(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_path_part(self):
+
+        localctx = ASLIntrinsicParser.Json_path_partContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 14, self.RULE_json_path_part)
+        try:
+            self.state = 74
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 4, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 72
+                self.json_path_iden()
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 73
+                self.json_path_iden_qual()
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_path_idenContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def identifier(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.IdentifierContext, 0)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_json_path_iden
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_iden"):
+                listener.enterJson_path_iden(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_iden"):
+                listener.exitJson_path_iden(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_iden"):
+                return visitor.visitJson_path_iden(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_path_iden(self):
+
+        localctx = ASLIntrinsicParser.Json_path_idenContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 16, self.RULE_json_path_iden)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 76
+            self.identifier()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_path_iden_qualContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def json_path_iden(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Json_path_idenContext, 0)
+
+        def json_path_qual(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Json_path_qualContext, 0)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_json_path_iden_qual
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_iden_qual"):
+                listener.enterJson_path_iden_qual(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_iden_qual"):
+                listener.exitJson_path_iden_qual(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_iden_qual"):
+                return visitor.visitJson_path_iden_qual(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_path_iden_qual(self):
+
+        localctx = ASLIntrinsicParser.Json_path_iden_qualContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 18, self.RULE_json_path_iden_qual)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 78
+            self.json_path_iden()
+            self.state = 79
+            self.json_path_qual()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_path_qualContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_json_path_qual
+
+        def copyFrom(self, ctx: ParserRuleContext):
+            super().copyFrom(ctx)
+
+    class Json_path_qual_voidContext(Json_path_qualContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_qualContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def LBRACK(self):
+            return self.getToken(ASLIntrinsicParser.LBRACK, 0)
+
+        def RBRACK(self):
+            return self.getToken(ASLIntrinsicParser.RBRACK, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_qual_void"):
+                listener.enterJson_path_qual_void(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_qual_void"):
+                listener.exitJson_path_qual_void(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_qual_void"):
+                return visitor.visitJson_path_qual_void(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Json_path_qual_queryContext(Json_path_qualContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_qualContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def LBRACK(self):
+            return self.getToken(ASLIntrinsicParser.LBRACK, 0)
+
+        def json_path_query(self):
+            return self.getTypedRuleContext(
+                ASLIntrinsicParser.Json_path_queryContext, 0
+            )
+
+        def RBRACK(self):
+            return self.getToken(ASLIntrinsicParser.RBRACK, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_qual_query"):
+                listener.enterJson_path_qual_query(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_qual_query"):
+                listener.exitJson_path_qual_query(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_qual_query"):
+                return visitor.visitJson_path_qual_query(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Json_path_qual_idxContext(Json_path_qualContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_qualContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def LBRACK(self):
+            return self.getToken(ASLIntrinsicParser.LBRACK, 0)
+
+        def INT(self):
+            return self.getToken(ASLIntrinsicParser.INT, 0)
+
+        def RBRACK(self):
+            return self.getToken(ASLIntrinsicParser.RBRACK, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_qual_idx"):
+                listener.enterJson_path_qual_idx(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_qual_idx"):
+                listener.exitJson_path_qual_idx(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_qual_idx"):
+                return visitor.visitJson_path_qual_idx(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_path_qual(self):
+
+        localctx = ASLIntrinsicParser.Json_path_qualContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 20, self.RULE_json_path_qual)
+        try:
+            self.state = 90
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 5, self._ctx)
+            if la_ == 1:
+                localctx = ASLIntrinsicParser.Json_path_qual_voidContext(self, localctx)
+                self.enterOuterAlt(localctx, 1)
+                self.state = 81
+                self.match(ASLIntrinsicParser.LBRACK)
+                self.state = 82
+                self.match(ASLIntrinsicParser.RBRACK)
+                pass
+
+            elif la_ == 2:
+                localctx = ASLIntrinsicParser.Json_path_qual_idxContext(self, localctx)
+                self.enterOuterAlt(localctx, 2)
+                self.state = 83
+                self.match(ASLIntrinsicParser.LBRACK)
+                self.state = 84
+                self.match(ASLIntrinsicParser.INT)
+                self.state = 85
+                self.match(ASLIntrinsicParser.RBRACK)
+                pass
+
+            elif la_ == 3:
+                localctx = ASLIntrinsicParser.Json_path_qual_queryContext(
+                    self, localctx
+                )
+                self.enterOuterAlt(localctx, 3)
+                self.state = 86
+                self.match(ASLIntrinsicParser.LBRACK)
+                self.state = 87
+                self.json_path_query(0)
+                self.state = 88
+                self.match(ASLIntrinsicParser.RBRACK)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_path_queryContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_json_path_query
+
+        def copyFrom(self, ctx: ParserRuleContext):
+            super().copyFrom(ctx)
+
+    class Json_path_query_cmpContext(Json_path_queryContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_queryContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def ATDOT(self):
+            return self.getToken(ASLIntrinsicParser.ATDOT, 0)
+
+        def json_path_iden(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.Json_path_idenContext, 0)
+
+        def INT(self):
+            return self.getToken(ASLIntrinsicParser.INT, 0)
+
+        def EQ(self):
+            return self.getToken(ASLIntrinsicParser.EQ, 0)
+
+        def STRING(self):
+            return self.getToken(ASLIntrinsicParser.STRING, 0)
+
+        def LDIAM(self):
+            return self.getToken(ASLIntrinsicParser.LDIAM, 0)
+
+        def RDIAM(self):
+            return self.getToken(ASLIntrinsicParser.RDIAM, 0)
+
+        def EQEQ(self):
+            return self.getToken(ASLIntrinsicParser.EQEQ, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_query_cmp"):
+                listener.enterJson_path_query_cmp(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_query_cmp"):
+                listener.exitJson_path_query_cmp(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_query_cmp"):
+                return visitor.visitJson_path_query_cmp(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Json_path_query_lengthContext(Json_path_queryContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_queryContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def ATDOTLENGTHDASH(self):
+            return self.getToken(ASLIntrinsicParser.ATDOTLENGTHDASH, 0)
+
+        def INT(self):
+            return self.getToken(ASLIntrinsicParser.INT, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_query_length"):
+                listener.enterJson_path_query_length(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_query_length"):
+                listener.exitJson_path_query_length(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_query_length"):
+                return visitor.visitJson_path_query_length(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Json_path_query_binaryContext(Json_path_queryContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_queryContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def json_path_query(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(
+                    ASLIntrinsicParser.Json_path_queryContext
+                )
+            else:
+                return self.getTypedRuleContext(
+                    ASLIntrinsicParser.Json_path_queryContext, i
+                )
+
+        def ANDAND(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLIntrinsicParser.ANDAND)
+            else:
+                return self.getToken(ASLIntrinsicParser.ANDAND, i)
+
+        def OROR(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLIntrinsicParser.OROR)
+            else:
+                return self.getToken(ASLIntrinsicParser.OROR, i)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_query_binary"):
+                listener.enterJson_path_query_binary(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_query_binary"):
+                listener.exitJson_path_query_binary(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_query_binary"):
+                return visitor.visitJson_path_query_binary(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Json_path_query_starContext(Json_path_queryContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLIntrinsicParser.Json_path_queryContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def STAR(self):
+            return self.getToken(ASLIntrinsicParser.STAR, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_path_query_star"):
+                listener.enterJson_path_query_star(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_path_query_star"):
+                listener.exitJson_path_query_star(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_path_query_star"):
+                return visitor.visitJson_path_query_star(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_path_query(self, _p: int = 0):
+        _parentctx = self._ctx
+        _parentState = self.state
+        localctx = ASLIntrinsicParser.Json_path_queryContext(
+            self, self._ctx, _parentState
+        )
+        _prevctx = localctx
+        _startState = 22
+        self.enterRecursionRule(localctx, 22, self.RULE_json_path_query, _p)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 104
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [3]:
+                localctx = ASLIntrinsicParser.Json_path_query_starContext(
+                    self, localctx
+                )
+                self._ctx = localctx
+                _prevctx = localctx
+
+                self.state = 93
+                self.match(ASLIntrinsicParser.STAR)
+                pass
+            elif token in [11]:
+                localctx = ASLIntrinsicParser.Json_path_query_cmpContext(self, localctx)
+                self._ctx = localctx
+                _prevctx = localctx
+                self.state = 94
+                self.match(ASLIntrinsicParser.ATDOT)
+                self.state = 95
+                self.json_path_iden()
+                self.state = 100
+                self._errHandler.sync(self)
+                token = self._input.LA(1)
+                if token in [9, 10, 15]:
+                    self.state = 96
+                    _la = self._input.LA(1)
+                    if not ((((_la) & ~0x3F) == 0 and ((1 << _la) & 34304) != 0)):
+                        self._errHandler.recoverInline(self)
+                    else:
+                        self._errHandler.reportMatch(self)
+                        self.consume()
+                    self.state = 97
+                    self.match(ASLIntrinsicParser.INT)
+                    pass
+                elif token in [16]:
+                    self.state = 98
+                    self.match(ASLIntrinsicParser.EQ)
+                    self.state = 99
+                    self.match(ASLIntrinsicParser.STRING)
+                    pass
+                else:
+                    raise NoViableAltException(self)
+
+                pass
+            elif token in [12]:
+                localctx = ASLIntrinsicParser.Json_path_query_lengthContext(
+                    self, localctx
+                )
+                self._ctx = localctx
+                _prevctx = localctx
+                self.state = 102
+                self.match(ASLIntrinsicParser.ATDOTLENGTHDASH)
+                self.state = 103
+                self.match(ASLIntrinsicParser.INT)
+                pass
+            else:
+                raise NoViableAltException(self)
+
+            self._ctx.stop = self._input.LT(-1)
+            self.state = 115
+            self._errHandler.sync(self)
+            _alt = self._interp.adaptivePredict(self._input, 9, self._ctx)
+            while _alt != 2 and _alt != ATN.INVALID_ALT_NUMBER:
+                if _alt == 1:
+                    if self._parseListeners is not None:
+                        self.triggerExitRuleEvent()
+                    _prevctx = localctx
+                    localctx = ASLIntrinsicParser.Json_path_query_binaryContext(
+                        self,
+                        ASLIntrinsicParser.Json_path_queryContext(
+                            self, _parentctx, _parentState
+                        ),
+                    )
+                    self.pushNewRecursionContext(
+                        localctx, _startState, self.RULE_json_path_query
+                    )
+                    self.state = 106
+                    if not self.precpred(self._ctx, 1):
+                        from antlr4.error.Errors import FailedPredicateException
+
+                        raise FailedPredicateException(
+                            self, "self.precpred(self._ctx, 1)"
+                        )
+                    self.state = 109
+                    self._errHandler.sync(self)
+                    _alt = 1
+                    while _alt != 2 and _alt != ATN.INVALID_ALT_NUMBER:
+                        if _alt == 1:
+                            self.state = 107
+                            _la = self._input.LA(1)
+                            if not (_la == 13 or _la == 14):
+                                self._errHandler.recoverInline(self)
+                            else:
+                                self._errHandler.reportMatch(self)
+                                self.consume()
+                            self.state = 108
+                            self.json_path_query(0)
+
+                        else:
+                            raise NoViableAltException(self)
+                        self.state = 111
+                        self._errHandler.sync(self)
+                        _alt = self._interp.adaptivePredict(self._input, 8, self._ctx)
+
+                self.state = 117
+                self._errHandler.sync(self)
+                _alt = self._interp.adaptivePredict(self._input, 9, self._ctx)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.unrollRecursionContexts(_parentctx)
+        return localctx
+
+    class IdentifierContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def IDENTIFIER(self):
+            return self.getToken(ASLIntrinsicParser.IDENTIFIER, 0)
+
+        def state_fun_name(self):
+            return self.getTypedRuleContext(ASLIntrinsicParser.State_fun_nameContext, 0)
+
+        def getRuleIndex(self):
+            return ASLIntrinsicParser.RULE_identifier
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterIdentifier"):
+                listener.enterIdentifier(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitIdentifier"):
+                listener.exitIdentifier(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitIdentifier"):
+                return visitor.visitIdentifier(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def identifier(self):
+
+        localctx = ASLIntrinsicParser.IdentifierContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 24, self.RULE_identifier)
+        try:
+            self.state = 120
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [41]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 118
+                self.match(ASLIntrinsicParser.IDENTIFIER)
+                pass
+            elif token in [
+                20,
+                21,
+                22,
+                23,
+                24,
+                25,
+                26,
+                27,
+                28,
+                29,
+                30,
+                31,
+                32,
+                33,
+                34,
+                35,
+                36,
+                37,
+            ]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 119
+                self.state_fun_name()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    def sempred(self, localctx: RuleContext, ruleIndex: int, actionIndex: int):
+        if self._predicates is None:
+            self._predicates = dict()
+        self._predicates[11] = self.json_path_query_sempred
+        pred = self._predicates.get(ruleIndex, None)
+        if pred is None:
+            raise Exception("No predicate with index:" + str(ruleIndex))
+        else:
+            return pred(localctx, actionIndex)
+
+    def json_path_query_sempred(self, localctx: Json_path_queryContext, predIndex: int):
+        if predIndex == 0:
+            return self.precpred(self._ctx, 1)
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParserListener.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParserListener.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParserListener.py
@@ -0,0 +1,243 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLIntrinsicParser.g4 by ANTLR 4.13.1
+from antlr4 import ParseTreeListener
+
+if "." in __name__:
+    from .ASLIntrinsicParser import ASLIntrinsicParser
+else:
+    from ASLIntrinsicParser import ASLIntrinsicParser
+
+# This class defines a complete listener for a parse tree produced by ASLIntrinsicParser.
+class ASLIntrinsicParserListener(ParseTreeListener):
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_decl.
+    def enterFunc_decl(self, ctx: ASLIntrinsicParser.Func_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_decl.
+    def exitFunc_decl(self, ctx: ASLIntrinsicParser.Func_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#states_func_decl.
+    def enterStates_func_decl(self, ctx: ASLIntrinsicParser.States_func_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#states_func_decl.
+    def exitStates_func_decl(self, ctx: ASLIntrinsicParser.States_func_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#state_fun_name.
+    def enterState_fun_name(self, ctx: ASLIntrinsicParser.State_fun_nameContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#state_fun_name.
+    def exitState_fun_name(self, ctx: ASLIntrinsicParser.State_fun_nameContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_list.
+    def enterFunc_arg_list(self, ctx: ASLIntrinsicParser.Func_arg_listContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_list.
+    def exitFunc_arg_list(self, ctx: ASLIntrinsicParser.Func_arg_listContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_string.
+    def enterFunc_arg_string(self, ctx: ASLIntrinsicParser.Func_arg_stringContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_string.
+    def exitFunc_arg_string(self, ctx: ASLIntrinsicParser.Func_arg_stringContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_int.
+    def enterFunc_arg_int(self, ctx: ASLIntrinsicParser.Func_arg_intContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_int.
+    def exitFunc_arg_int(self, ctx: ASLIntrinsicParser.Func_arg_intContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_float.
+    def enterFunc_arg_float(self, ctx: ASLIntrinsicParser.Func_arg_floatContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_float.
+    def exitFunc_arg_float(self, ctx: ASLIntrinsicParser.Func_arg_floatContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_bool.
+    def enterFunc_arg_bool(self, ctx: ASLIntrinsicParser.Func_arg_boolContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_bool.
+    def exitFunc_arg_bool(self, ctx: ASLIntrinsicParser.Func_arg_boolContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_context_path.
+    def enterFunc_arg_context_path(
+        self, ctx: ASLIntrinsicParser.Func_arg_context_pathContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_context_path.
+    def exitFunc_arg_context_path(
+        self, ctx: ASLIntrinsicParser.Func_arg_context_pathContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_json_path.
+    def enterFunc_arg_json_path(
+        self, ctx: ASLIntrinsicParser.Func_arg_json_pathContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_json_path.
+    def exitFunc_arg_json_path(self, ctx: ASLIntrinsicParser.Func_arg_json_pathContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#func_arg_func_decl.
+    def enterFunc_arg_func_decl(
+        self, ctx: ASLIntrinsicParser.Func_arg_func_declContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#func_arg_func_decl.
+    def exitFunc_arg_func_decl(self, ctx: ASLIntrinsicParser.Func_arg_func_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#context_path.
+    def enterContext_path(self, ctx: ASLIntrinsicParser.Context_pathContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#context_path.
+    def exitContext_path(self, ctx: ASLIntrinsicParser.Context_pathContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path.
+    def enterJson_path(self, ctx: ASLIntrinsicParser.Json_pathContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path.
+    def exitJson_path(self, ctx: ASLIntrinsicParser.Json_pathContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_part.
+    def enterJson_path_part(self, ctx: ASLIntrinsicParser.Json_path_partContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_part.
+    def exitJson_path_part(self, ctx: ASLIntrinsicParser.Json_path_partContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_iden.
+    def enterJson_path_iden(self, ctx: ASLIntrinsicParser.Json_path_idenContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_iden.
+    def exitJson_path_iden(self, ctx: ASLIntrinsicParser.Json_path_idenContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_iden_qual.
+    def enterJson_path_iden_qual(
+        self, ctx: ASLIntrinsicParser.Json_path_iden_qualContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_iden_qual.
+    def exitJson_path_iden_qual(
+        self, ctx: ASLIntrinsicParser.Json_path_iden_qualContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_qual_void.
+    def enterJson_path_qual_void(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_voidContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_qual_void.
+    def exitJson_path_qual_void(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_voidContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_qual_idx.
+    def enterJson_path_qual_idx(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_idxContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_qual_idx.
+    def exitJson_path_qual_idx(self, ctx: ASLIntrinsicParser.Json_path_qual_idxContext):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_qual_query.
+    def enterJson_path_qual_query(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_queryContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_qual_query.
+    def exitJson_path_qual_query(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_queryContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_query_cmp.
+    def enterJson_path_query_cmp(
+        self, ctx: ASLIntrinsicParser.Json_path_query_cmpContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_query_cmp.
+    def exitJson_path_query_cmp(
+        self, ctx: ASLIntrinsicParser.Json_path_query_cmpContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_query_length.
+    def enterJson_path_query_length(
+        self, ctx: ASLIntrinsicParser.Json_path_query_lengthContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_query_length.
+    def exitJson_path_query_length(
+        self, ctx: ASLIntrinsicParser.Json_path_query_lengthContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_query_binary.
+    def enterJson_path_query_binary(
+        self, ctx: ASLIntrinsicParser.Json_path_query_binaryContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_query_binary.
+    def exitJson_path_query_binary(
+        self, ctx: ASLIntrinsicParser.Json_path_query_binaryContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#json_path_query_star.
+    def enterJson_path_query_star(
+        self, ctx: ASLIntrinsicParser.Json_path_query_starContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#json_path_query_star.
+    def exitJson_path_query_star(
+        self, ctx: ASLIntrinsicParser.Json_path_query_starContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLIntrinsicParser#identifier.
+    def enterIdentifier(self, ctx: ASLIntrinsicParser.IdentifierContext):
+        pass
+
+    # Exit a parse tree produced by ASLIntrinsicParser#identifier.
+    def exitIdentifier(self, ctx: ASLIntrinsicParser.IdentifierContext):
+        pass
+
+
+del ASLIntrinsicParser
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParserVisitor.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParserVisitor.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLIntrinsicParserVisitor.py
@@ -0,0 +1,133 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLIntrinsicParser.g4 by ANTLR 4.13.1
+from antlr4 import ParseTreeVisitor
+
+if "." in __name__:
+    from .ASLIntrinsicParser import ASLIntrinsicParser
+else:
+    from ASLIntrinsicParser import ASLIntrinsicParser
+
+# This class defines a complete generic visitor for a parse tree produced by ASLIntrinsicParser.
+
+
+class ASLIntrinsicParserVisitor(ParseTreeVisitor):
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_decl.
+    def visitFunc_decl(self, ctx: ASLIntrinsicParser.Func_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#states_func_decl.
+    def visitStates_func_decl(self, ctx: ASLIntrinsicParser.States_func_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#state_fun_name.
+    def visitState_fun_name(self, ctx: ASLIntrinsicParser.State_fun_nameContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_list.
+    def visitFunc_arg_list(self, ctx: ASLIntrinsicParser.Func_arg_listContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_string.
+    def visitFunc_arg_string(self, ctx: ASLIntrinsicParser.Func_arg_stringContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_int.
+    def visitFunc_arg_int(self, ctx: ASLIntrinsicParser.Func_arg_intContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_float.
+    def visitFunc_arg_float(self, ctx: ASLIntrinsicParser.Func_arg_floatContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_bool.
+    def visitFunc_arg_bool(self, ctx: ASLIntrinsicParser.Func_arg_boolContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_context_path.
+    def visitFunc_arg_context_path(
+        self, ctx: ASLIntrinsicParser.Func_arg_context_pathContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_json_path.
+    def visitFunc_arg_json_path(
+        self, ctx: ASLIntrinsicParser.Func_arg_json_pathContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#func_arg_func_decl.
+    def visitFunc_arg_func_decl(
+        self, ctx: ASLIntrinsicParser.Func_arg_func_declContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#context_path.
+    def visitContext_path(self, ctx: ASLIntrinsicParser.Context_pathContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path.
+    def visitJson_path(self, ctx: ASLIntrinsicParser.Json_pathContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_part.
+    def visitJson_path_part(self, ctx: ASLIntrinsicParser.Json_path_partContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_iden.
+    def visitJson_path_iden(self, ctx: ASLIntrinsicParser.Json_path_idenContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_iden_qual.
+    def visitJson_path_iden_qual(
+        self, ctx: ASLIntrinsicParser.Json_path_iden_qualContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_qual_void.
+    def visitJson_path_qual_void(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_voidContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_qual_idx.
+    def visitJson_path_qual_idx(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_idxContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_qual_query.
+    def visitJson_path_qual_query(
+        self, ctx: ASLIntrinsicParser.Json_path_qual_queryContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_query_cmp.
+    def visitJson_path_query_cmp(
+        self, ctx: ASLIntrinsicParser.Json_path_query_cmpContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_query_length.
+    def visitJson_path_query_length(
+        self, ctx: ASLIntrinsicParser.Json_path_query_lengthContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_query_binary.
+    def visitJson_path_query_binary(
+        self, ctx: ASLIntrinsicParser.Json_path_query_binaryContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#json_path_query_star.
+    def visitJson_path_query_star(
+        self, ctx: ASLIntrinsicParser.Json_path_query_starContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLIntrinsicParser#identifier.
+    def visitIdentifier(self, ctx: ASLIntrinsicParser.IdentifierContext):
+        return self.visitChildren(ctx)
+
+
+del ASLIntrinsicParser
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLLexer.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLLexer.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLLexer.py
@@ -0,0 +1,19662 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLLexer.g4 by ANTLR 4.13.1
+import sys
+from typing import TextIO
+
+from antlr4 import (
+    DFA,
+    ATNDeserializer,
+    Lexer,
+    LexerATNSimulator,
+    PredictionContextCache,
+)
+
+
+def serializedATN():
+    return [
+        4,
+        0,
+        133,
+        2328,
+        6,
+        -1,
+        2,
+        0,
+        7,
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+
+
+class ASLLexer(Lexer):
+
+    atn = ATNDeserializer().deserialize(serializedATN())
+
+    decisionsToDFA = [DFA(ds, i) for i, ds in enumerate(atn.decisionToState)]
+
+    COMMA = 1
+    COLON = 2
+    LBRACK = 3
+    RBRACK = 4
+    LBRACE = 5
+    RBRACE = 6
+    TRUE = 7
+    FALSE = 8
+    NULL = 9
+    COMMENT = 10
+    STATES = 11
+    STARTAT = 12
+    NEXTSTATE = 13
+    VERSION = 14
+    TYPE = 15
+    TASK = 16
+    CHOICE = 17
+    FAIL = 18
+    SUCCEED = 19
+    PASS = 20
+    WAIT = 21
+    PARALLEL = 22
+    MAP = 23
+    CHOICES = 24
+    VARIABLE = 25
+    DEFAULT = 26
+    BRANCHES = 27
+    AND = 28
+    BOOLEANEQUALS = 29
+    BOOLEANQUALSPATH = 30
+    ISBOOLEAN = 31
+    ISNULL = 32
+    ISNUMERIC = 33
+    ISPRESENT = 34
+    ISSTRING = 35
+    ISTIMESTAMP = 36
+    NOT = 37
+    NUMERICEQUALS = 38
+    NUMERICEQUALSPATH = 39
+    NUMERICGREATERTHAN = 40
+    NUMERICGREATERTHANPATH = 41
+    NUMERICGREATERTHANEQUALS = 42
+    NUMERICGREATERTHANEQUALSPATH = 43
+    NUMERICLESSTHAN = 44
+    NUMERICLESSTHANPATH = 45
+    NUMERICLESSTHANEQUALS = 46
+    NUMERICLESSTHANEQUALSPATH = 47
+    OR = 48
+    STRINGEQUALS = 49
+    STRINGEQUALSPATH = 50
+    STRINGGREATERTHAN = 51
+    STRINGGREATERTHANPATH = 52
+    STRINGGREATERTHANEQUALS = 53
+    STRINGGREATERTHANEQUALSPATH = 54
+    STRINGLESSTHAN = 55
+    STRINGLESSTHANPATH = 56
+    STRINGLESSTHANEQUALS = 57
+    STRINGLESSTHANEQUALSPATH = 58
+    STRINGMATCHES = 59
+    TIMESTAMPEQUALS = 60
+    TIMESTAMPEQUALSPATH = 61
+    TIMESTAMPGREATERTHAN = 62
+    TIMESTAMPGREATERTHANPATH = 63
+    TIMESTAMPGREATERTHANEQUALS = 64
+    TIMESTAMPGREATERTHANEQUALSPATH = 65
+    TIMESTAMPLESSTHAN = 66
+    TIMESTAMPLESSTHANPATH = 67
+    TIMESTAMPLESSTHANEQUALS = 68
+    TIMESTAMPLESSTHANEQUALSPATH = 69
+    SECONDSPATH = 70
+    SECONDS = 71
+    TIMESTAMPPATH = 72
+    TIMESTAMP = 73
+    TIMEOUTSECONDS = 74
+    TIMEOUTSECONDSPATH = 75
+    HEARTBEATSECONDS = 76
+    HEARTBEATSECONDSPATH = 77
+    PROCESSORCONFIG = 78
+    MODE = 79
+    INLINE = 80
+    DISTRIBUTED = 81
+    EXECUTIONTYPE = 82
+    STANDARD = 83
+    ITEMPROCESSOR = 84
+    ITERATOR = 85
+    ITEMSELECTOR = 86
+    MAXCONCURRENCY = 87
+    RESOURCE = 88
+    INPUTPATH = 89
+    OUTPUTPATH = 90
+    ITEMSPATH = 91
+    RESULTPATH = 92
+    RESULT = 93
+    PARAMETERS = 94
+    RESULTSELECTOR = 95
+    ITEMREADER = 96
+    READERCONFIG = 97
+    INPUTTYPE = 98
+    CSVHEADERLOCATION = 99
+    CSVHEADERS = 100
+    MAXITEMS = 101
+    MAXITEMSPATH = 102
+    NEXT = 103
+    END = 104
+    CAUSE = 105
+    ERROR = 106
+    RETRY = 107
+    ERROREQUALS = 108
+    INTERVALSECONDS = 109
+    MAXATTEMPTS = 110
+    BACKOFFRATE = 111
+    CATCH = 112
+    ERRORNAMEStatesALL = 113
+    ERRORNAMEStatesHeartbeatTimeout = 114
+    ERRORNAMEStatesTimeout = 115
+    ERRORNAMEStatesTaskFailed = 116
+    ERRORNAMEStatesPermissions = 117
+    ERRORNAMEStatesResultPathMatchFailure = 118
+    ERRORNAMEStatesParameterPathFailure = 119
+    ERRORNAMEStatesBranchFailed = 120
+    ERRORNAMEStatesNoChoiceMatched = 121
+    ERRORNAMEStatesIntrinsicFailure = 122
+    ERRORNAMEStatesExceedToleratedFailureThreshold = 123
+    ERRORNAMEStatesItemReaderFailed = 124
+    ERRORNAMEStatesResultWriterFailed = 125
+    ERRORNAMEStatesRuntime = 126
+    STRINGDOLLAR = 127
+    STRINGPATHCONTEXTOBJ = 128
+    STRINGPATH = 129
+    STRING = 130
+    INT = 131
+    NUMBER = 132
+    WS = 133
+
+    channelNames = ["DEFAULT_TOKEN_CHANNEL", "HIDDEN"]
+
+    modeNames = ["DEFAULT_MODE"]
+
+    literalNames = [
+        "<INVALID>",
+        "','",
+        "':'",
+        "'['",
+        "']'",
+        "'{'",
+        "'}'",
+        "'true'",
+        "'false'",
+        "'null'",
+        "'\"Comment\"'",
+        "'\"States\"'",
+        "'\"StartAt\"'",
+        "'\"NextState\"'",
+        "'\"Version\"'",
+        "'\"Type\"'",
+        "'\"Task\"'",
+        "'\"Choice\"'",
+        "'\"Fail\"'",
+        "'\"Succeed\"'",
+        "'\"Pass\"'",
+        "'\"Wait\"'",
+        "'\"Parallel\"'",
+        "'\"Map\"'",
+        "'\"Choices\"'",
+        "'\"Variable\"'",
+        "'\"Default\"'",
+        "'\"Branches\"'",
+        "'\"And\"'",
+        "'\"BooleanEquals\"'",
+        "'\"BooleanEqualsPath\"'",
+        "'\"IsBoolean\"'",
+        "'\"IsNull\"'",
+        "'\"IsNumeric\"'",
+        "'\"IsPresent\"'",
+        "'\"IsString\"'",
+        "'\"IsTimestamp\"'",
+        "'\"Not\"'",
+        "'\"NumericEquals\"'",
+        "'\"NumericEqualsPath\"'",
+        "'\"NumericGreaterThan\"'",
+        "'\"NumericGreaterThanPath\"'",
+        "'\"NumericGreaterThanEquals\"'",
+        "'\"NumericGreaterThanEqualsPath\"'",
+        "'\"NumericLessThan\"'",
+        "'\"NumericLessThanPath\"'",
+        "'\"NumericLessThanEquals\"'",
+        "'\"NumericLessThanEqualsPath\"'",
+        "'\"Or\"'",
+        "'\"StringEquals\"'",
+        "'\"StringEqualsPath\"'",
+        "'\"StringGreaterThan\"'",
+        "'\"StringGreaterThanPath\"'",
+        "'\"StringGreaterThanEquals\"'",
+        "'\"StringGreaterThanEqualsPath\"'",
+        "'\"StringLessThan\"'",
+        "'\"StringLessThanPath\"'",
+        "'\"StringLessThanEquals\"'",
+        "'\"StringLessThanEqualsPath\"'",
+        "'\"StringMatches\"'",
+        "'\"TimestampEquals\"'",
+        "'\"TimestampEqualsPath\"'",
+        "'\"TimestampGreaterThan\"'",
+        "'\"TimestampGreaterThanPath\"'",
+        "'\"TimestampGreaterThanEquals\"'",
+        "'\"TimestampGreaterThanEqualsPath\"'",
+        "'\"TimestampLessThan\"'",
+        "'\"TimestampLessThanPath\"'",
+        "'\"TimestampLessThanEquals\"'",
+        "'\"TimestampLessThanEqualsPath\"'",
+        "'\"SecondsPath\"'",
+        "'\"Seconds\"'",
+        "'\"TimestampPath\"'",
+        "'\"Timestamp\"'",
+        "'\"TimeoutSeconds\"'",
+        "'\"TimeoutSecondsPath\"'",
+        "'\"HeartbeatSeconds\"'",
+        "'\"HeartbeatSecondsPath\"'",
+        "'\"ProcessorConfig\"'",
+        "'\"Mode\"'",
+        "'\"INLINE\"'",
+        "'\"DISTRIBUTED\"'",
+        "'\"ExecutionType\"'",
+        "'\"STANDARD\"'",
+        "'\"ItemProcessor\"'",
+        "'\"Iterator\"'",
+        "'\"ItemSelector\"'",
+        "'\"MaxConcurrency\"'",
+        "'\"Resource\"'",
+        "'\"InputPath\"'",
+        "'\"OutputPath\"'",
+        "'\"ItemsPath\"'",
+        "'\"ResultPath\"'",
+        "'\"Result\"'",
+        "'\"Parameters\"'",
+        "'\"ResultSelector\"'",
+        "'\"ItemReader\"'",
+        "'\"ReaderConfig\"'",
+        "'\"InputType\"'",
+        "'\"CSVHeaderLocation\"'",
+        "'\"CSVHeaders\"'",
+        "'\"MaxItems\"'",
+        "'\"MaxItemsPath\"'",
+        "'\"Next\"'",
+        "'\"End\"'",
+        "'\"Cause\"'",
+        "'\"Error\"'",
+        "'\"Retry\"'",
+        "'\"ErrorEquals\"'",
+        "'\"IntervalSeconds\"'",
+        "'\"MaxAttempts\"'",
+        "'\"BackoffRate\"'",
+        "'\"Catch\"'",
+        "'\"States.ALL\"'",
+        "'\"States.HeartbeatTimeout\"'",
+        "'\"States.Timeout\"'",
+        "'\"States.TaskFailed\"'",
+        "'\"States.Permissions\"'",
+        "'\"States.ResultPathMatchFailure\"'",
+        "'\"States.ParameterPathFailure\"'",
+        "'\"States.BranchFailed\"'",
+        "'\"States.NoChoiceMatched\"'",
+        "'\"States.IntrinsicFailure\"'",
+        "'\"States.ExceedToleratedFailureThreshold\"'",
+        "'\"States.ItemReaderFailed\"'",
+        "'\"States.ResultWriterFailed\"'",
+        "'\"States.Runtime\"'",
+    ]
+
+    symbolicNames = [
+        "<INVALID>",
+        "COMMA",
+        "COLON",
+        "LBRACK",
+        "RBRACK",
+        "LBRACE",
+        "RBRACE",
+        "TRUE",
+        "FALSE",
+        "NULL",
+        "COMMENT",
+        "STATES",
+        "STARTAT",
+        "NEXTSTATE",
+        "VERSION",
+        "TYPE",
+        "TASK",
+        "CHOICE",
+        "FAIL",
+        "SUCCEED",
+        "PASS",
+        "WAIT",
+        "PARALLEL",
+        "MAP",
+        "CHOICES",
+        "VARIABLE",
+        "DEFAULT",
+        "BRANCHES",
+        "AND",
+        "BOOLEANEQUALS",
+        "BOOLEANQUALSPATH",
+        "ISBOOLEAN",
+        "ISNULL",
+        "ISNUMERIC",
+        "ISPRESENT",
+        "ISSTRING",
+        "ISTIMESTAMP",
+        "NOT",
+        "NUMERICEQUALS",
+        "NUMERICEQUALSPATH",
+        "NUMERICGREATERTHAN",
+        "NUMERICGREATERTHANPATH",
+        "NUMERICGREATERTHANEQUALS",
+        "NUMERICGREATERTHANEQUALSPATH",
+        "NUMERICLESSTHAN",
+        "NUMERICLESSTHANPATH",
+        "NUMERICLESSTHANEQUALS",
+        "NUMERICLESSTHANEQUALSPATH",
+        "OR",
+        "STRINGEQUALS",
+        "STRINGEQUALSPATH",
+        "STRINGGREATERTHAN",
+        "STRINGGREATERTHANPATH",
+        "STRINGGREATERTHANEQUALS",
+        "STRINGGREATERTHANEQUALSPATH",
+        "STRINGLESSTHAN",
+        "STRINGLESSTHANPATH",
+        "STRINGLESSTHANEQUALS",
+        "STRINGLESSTHANEQUALSPATH",
+        "STRINGMATCHES",
+        "TIMESTAMPEQUALS",
+        "TIMESTAMPEQUALSPATH",
+        "TIMESTAMPGREATERTHAN",
+        "TIMESTAMPGREATERTHANPATH",
+        "TIMESTAMPGREATERTHANEQUALS",
+        "TIMESTAMPGREATERTHANEQUALSPATH",
+        "TIMESTAMPLESSTHAN",
+        "TIMESTAMPLESSTHANPATH",
+        "TIMESTAMPLESSTHANEQUALS",
+        "TIMESTAMPLESSTHANEQUALSPATH",
+        "SECONDSPATH",
+        "SECONDS",
+        "TIMESTAMPPATH",
+        "TIMESTAMP",
+        "TIMEOUTSECONDS",
+        "TIMEOUTSECONDSPATH",
+        "HEARTBEATSECONDS",
+        "HEARTBEATSECONDSPATH",
+        "PROCESSORCONFIG",
+        "MODE",
+        "INLINE",
+        "DISTRIBUTED",
+        "EXECUTIONTYPE",
+        "STANDARD",
+        "ITEMPROCESSOR",
+        "ITERATOR",
+        "ITEMSELECTOR",
+        "MAXCONCURRENCY",
+        "RESOURCE",
+        "INPUTPATH",
+        "OUTPUTPATH",
+        "ITEMSPATH",
+        "RESULTPATH",
+        "RESULT",
+        "PARAMETERS",
+        "RESULTSELECTOR",
+        "ITEMREADER",
+        "READERCONFIG",
+        "INPUTTYPE",
+        "CSVHEADERLOCATION",
+        "CSVHEADERS",
+        "MAXITEMS",
+        "MAXITEMSPATH",
+        "NEXT",
+        "END",
+        "CAUSE",
+        "ERROR",
+        "RETRY",
+        "ERROREQUALS",
+        "INTERVALSECONDS",
+        "MAXATTEMPTS",
+        "BACKOFFRATE",
+        "CATCH",
+        "ERRORNAMEStatesALL",
+        "ERRORNAMEStatesHeartbeatTimeout",
+        "ERRORNAMEStatesTimeout",
+        "ERRORNAMEStatesTaskFailed",
+        "ERRORNAMEStatesPermissions",
+        "ERRORNAMEStatesResultPathMatchFailure",
+        "ERRORNAMEStatesParameterPathFailure",
+        "ERRORNAMEStatesBranchFailed",
+        "ERRORNAMEStatesNoChoiceMatched",
+        "ERRORNAMEStatesIntrinsicFailure",
+        "ERRORNAMEStatesExceedToleratedFailureThreshold",
+        "ERRORNAMEStatesItemReaderFailed",
+        "ERRORNAMEStatesResultWriterFailed",
+        "ERRORNAMEStatesRuntime",
+        "STRINGDOLLAR",
+        "STRINGPATHCONTEXTOBJ",
+        "STRINGPATH",
+        "STRING",
+        "INT",
+        "NUMBER",
+        "WS",
+    ]
+
+    ruleNames = [
+        "COMMA",
+        "COLON",
+        "LBRACK",
+        "RBRACK",
+        "LBRACE",
+        "RBRACE",
+        "TRUE",
+        "FALSE",
+        "NULL",
+        "COMMENT",
+        "STATES",
+        "STARTAT",
+        "NEXTSTATE",
+        "VERSION",
+        "TYPE",
+        "TASK",
+        "CHOICE",
+        "FAIL",
+        "SUCCEED",
+        "PASS",
+        "WAIT",
+        "PARALLEL",
+        "MAP",
+        "CHOICES",
+        "VARIABLE",
+        "DEFAULT",
+        "BRANCHES",
+        "AND",
+        "BOOLEANEQUALS",
+        "BOOLEANQUALSPATH",
+        "ISBOOLEAN",
+        "ISNULL",
+        "ISNUMERIC",
+        "ISPRESENT",
+        "ISSTRING",
+        "ISTIMESTAMP",
+        "NOT",
+        "NUMERICEQUALS",
+        "NUMERICEQUALSPATH",
+        "NUMERICGREATERTHAN",
+        "NUMERICGREATERTHANPATH",
+        "NUMERICGREATERTHANEQUALS",
+        "NUMERICGREATERTHANEQUALSPATH",
+        "NUMERICLESSTHAN",
+        "NUMERICLESSTHANPATH",
+        "NUMERICLESSTHANEQUALS",
+        "NUMERICLESSTHANEQUALSPATH",
+        "OR",
+        "STRINGEQUALS",
+        "STRINGEQUALSPATH",
+        "STRINGGREATERTHAN",
+        "STRINGGREATERTHANPATH",
+        "STRINGGREATERTHANEQUALS",
+        "STRINGGREATERTHANEQUALSPATH",
+        "STRINGLESSTHAN",
+        "STRINGLESSTHANPATH",
+        "STRINGLESSTHANEQUALS",
+        "STRINGLESSTHANEQUALSPATH",
+        "STRINGMATCHES",
+        "TIMESTAMPEQUALS",
+        "TIMESTAMPEQUALSPATH",
+        "TIMESTAMPGREATERTHAN",
+        "TIMESTAMPGREATERTHANPATH",
+        "TIMESTAMPGREATERTHANEQUALS",
+        "TIMESTAMPGREATERTHANEQUALSPATH",
+        "TIMESTAMPLESSTHAN",
+        "TIMESTAMPLESSTHANPATH",
+        "TIMESTAMPLESSTHANEQUALS",
+        "TIMESTAMPLESSTHANEQUALSPATH",
+        "SECONDSPATH",
+        "SECONDS",
+        "TIMESTAMPPATH",
+        "TIMESTAMP",
+        "TIMEOUTSECONDS",
+        "TIMEOUTSECONDSPATH",
+        "HEARTBEATSECONDS",
+        "HEARTBEATSECONDSPATH",
+        "PROCESSORCONFIG",
+        "MODE",
+        "INLINE",
+        "DISTRIBUTED",
+        "EXECUTIONTYPE",
+        "STANDARD",
+        "ITEMPROCESSOR",
+        "ITERATOR",
+        "ITEMSELECTOR",
+        "MAXCONCURRENCY",
+        "RESOURCE",
+        "INPUTPATH",
+        "OUTPUTPATH",
+        "ITEMSPATH",
+        "RESULTPATH",
+        "RESULT",
+        "PARAMETERS",
+        "RESULTSELECTOR",
+        "ITEMREADER",
+        "READERCONFIG",
+        "INPUTTYPE",
+        "CSVHEADERLOCATION",
+        "CSVHEADERS",
+        "MAXITEMS",
+        "MAXITEMSPATH",
+        "NEXT",
+        "END",
+        "CAUSE",
+        "ERROR",
+        "RETRY",
+        "ERROREQUALS",
+        "INTERVALSECONDS",
+        "MAXATTEMPTS",
+        "BACKOFFRATE",
+        "CATCH",
+        "ERRORNAMEStatesALL",
+        "ERRORNAMEStatesHeartbeatTimeout",
+        "ERRORNAMEStatesTimeout",
+        "ERRORNAMEStatesTaskFailed",
+        "ERRORNAMEStatesPermissions",
+        "ERRORNAMEStatesResultPathMatchFailure",
+        "ERRORNAMEStatesParameterPathFailure",
+        "ERRORNAMEStatesBranchFailed",
+        "ERRORNAMEStatesNoChoiceMatched",
+        "ERRORNAMEStatesIntrinsicFailure",
+        "ERRORNAMEStatesExceedToleratedFailureThreshold",
+        "ERRORNAMEStatesItemReaderFailed",
+        "ERRORNAMEStatesResultWriterFailed",
+        "ERRORNAMEStatesRuntime",
+        "STRINGDOLLAR",
+        "STRINGPATHCONTEXTOBJ",
+        "STRINGPATH",
+        "STRING",
+        "ESC",
+        "UNICODE",
+        "HEX",
+        "SAFECODEPOINT",
+        "INT",
+        "NUMBER",
+        "EXP",
+        "WS",
+    ]
+
+    grammarFileName = "ASLLexer.g4"
+
+    def __init__(self, input=None, output: TextIO = sys.stdout):
+        super().__init__(input, output)
+        self.checkVersion("4.13.1")
+        self._interp = LexerATNSimulator(
+            self, self.atn, self.decisionsToDFA, PredictionContextCache()
+        )
+        self._actions = None
+        self._predicates = None
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLParser.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLParser.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLParser.py
@@ -0,0 +1,14824 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLParser.g4 by ANTLR 4.13.1
+# encoding: utf-8
+import sys
+from typing import TextIO
+
+from antlr4 import (
+    DFA,
+    ATNDeserializer,
+    NoViableAltException,
+    Parser,
+    ParserATNSimulator,
+    ParserRuleContext,
+    ParseTreeListener,
+    ParseTreeVisitor,
+    PredictionContextCache,
+    RecognitionException,
+    Token,
+    TokenStream,
+)
+
+
+def serializedATN():
+    return [
+        4,
+        1,
+        133,
+        793,
+        2,
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+        7,
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+    ]
+
+
+class ASLParser(Parser):
+
+    grammarFileName = "ASLParser.g4"
+
+    atn = ATNDeserializer().deserialize(serializedATN())
+
+    decisionsToDFA = [DFA(ds, i) for i, ds in enumerate(atn.decisionToState)]
+
+    sharedContextCache = PredictionContextCache()
+
+    literalNames = [
+        "<INVALID>",
+        "','",
+        "':'",
+        "'['",
+        "']'",
+        "'{'",
+        "'}'",
+        "'true'",
+        "'false'",
+        "'null'",
+        "'\"Comment\"'",
+        "'\"States\"'",
+        "'\"StartAt\"'",
+        "'\"NextState\"'",
+        "'\"Version\"'",
+        "'\"Type\"'",
+        "'\"Task\"'",
+        "'\"Choice\"'",
+        "'\"Fail\"'",
+        "'\"Succeed\"'",
+        "'\"Pass\"'",
+        "'\"Wait\"'",
+        "'\"Parallel\"'",
+        "'\"Map\"'",
+        "'\"Choices\"'",
+        "'\"Variable\"'",
+        "'\"Default\"'",
+        "'\"Branches\"'",
+        "'\"And\"'",
+        "'\"BooleanEquals\"'",
+        "'\"BooleanEqualsPath\"'",
+        "'\"IsBoolean\"'",
+        "'\"IsNull\"'",
+        "'\"IsNumeric\"'",
+        "'\"IsPresent\"'",
+        "'\"IsString\"'",
+        "'\"IsTimestamp\"'",
+        "'\"Not\"'",
+        "'\"NumericEquals\"'",
+        "'\"NumericEqualsPath\"'",
+        "'\"NumericGreaterThan\"'",
+        "'\"NumericGreaterThanPath\"'",
+        "'\"NumericGreaterThanEquals\"'",
+        "'\"NumericGreaterThanEqualsPath\"'",
+        "'\"NumericLessThan\"'",
+        "'\"NumericLessThanPath\"'",
+        "'\"NumericLessThanEquals\"'",
+        "'\"NumericLessThanEqualsPath\"'",
+        "'\"Or\"'",
+        "'\"StringEquals\"'",
+        "'\"StringEqualsPath\"'",
+        "'\"StringGreaterThan\"'",
+        "'\"StringGreaterThanPath\"'",
+        "'\"StringGreaterThanEquals\"'",
+        "'\"StringGreaterThanEqualsPath\"'",
+        "'\"StringLessThan\"'",
+        "'\"StringLessThanPath\"'",
+        "'\"StringLessThanEquals\"'",
+        "'\"StringLessThanEqualsPath\"'",
+        "'\"StringMatches\"'",
+        "'\"TimestampEquals\"'",
+        "'\"TimestampEqualsPath\"'",
+        "'\"TimestampGreaterThan\"'",
+        "'\"TimestampGreaterThanPath\"'",
+        "'\"TimestampGreaterThanEquals\"'",
+        "'\"TimestampGreaterThanEqualsPath\"'",
+        "'\"TimestampLessThan\"'",
+        "'\"TimestampLessThanPath\"'",
+        "'\"TimestampLessThanEquals\"'",
+        "'\"TimestampLessThanEqualsPath\"'",
+        "'\"SecondsPath\"'",
+        "'\"Seconds\"'",
+        "'\"TimestampPath\"'",
+        "'\"Timestamp\"'",
+        "'\"TimeoutSeconds\"'",
+        "'\"TimeoutSecondsPath\"'",
+        "'\"HeartbeatSeconds\"'",
+        "'\"HeartbeatSecondsPath\"'",
+        "'\"ProcessorConfig\"'",
+        "'\"Mode\"'",
+        "'\"INLINE\"'",
+        "'\"DISTRIBUTED\"'",
+        "'\"ExecutionType\"'",
+        "'\"STANDARD\"'",
+        "'\"ItemProcessor\"'",
+        "'\"Iterator\"'",
+        "'\"ItemSelector\"'",
+        "'\"MaxConcurrency\"'",
+        "'\"Resource\"'",
+        "'\"InputPath\"'",
+        "'\"OutputPath\"'",
+        "'\"ItemsPath\"'",
+        "'\"ResultPath\"'",
+        "'\"Result\"'",
+        "'\"Parameters\"'",
+        "'\"ResultSelector\"'",
+        "'\"ItemReader\"'",
+        "'\"ReaderConfig\"'",
+        "'\"InputType\"'",
+        "'\"CSVHeaderLocation\"'",
+        "'\"CSVHeaders\"'",
+        "'\"MaxItems\"'",
+        "'\"MaxItemsPath\"'",
+        "'\"Next\"'",
+        "'\"End\"'",
+        "'\"Cause\"'",
+        "'\"Error\"'",
+        "'\"Retry\"'",
+        "'\"ErrorEquals\"'",
+        "'\"IntervalSeconds\"'",
+        "'\"MaxAttempts\"'",
+        "'\"BackoffRate\"'",
+        "'\"Catch\"'",
+        "'\"States.ALL\"'",
+        "'\"States.HeartbeatTimeout\"'",
+        "'\"States.Timeout\"'",
+        "'\"States.TaskFailed\"'",
+        "'\"States.Permissions\"'",
+        "'\"States.ResultPathMatchFailure\"'",
+        "'\"States.ParameterPathFailure\"'",
+        "'\"States.BranchFailed\"'",
+        "'\"States.NoChoiceMatched\"'",
+        "'\"States.IntrinsicFailure\"'",
+        "'\"States.ExceedToleratedFailureThreshold\"'",
+        "'\"States.ItemReaderFailed\"'",
+        "'\"States.ResultWriterFailed\"'",
+        "'\"States.Runtime\"'",
+    ]
+
+    symbolicNames = [
+        "<INVALID>",
+        "COMMA",
+        "COLON",
+        "LBRACK",
+        "RBRACK",
+        "LBRACE",
+        "RBRACE",
+        "TRUE",
+        "FALSE",
+        "NULL",
+        "COMMENT",
+        "STATES",
+        "STARTAT",
+        "NEXTSTATE",
+        "VERSION",
+        "TYPE",
+        "TASK",
+        "CHOICE",
+        "FAIL",
+        "SUCCEED",
+        "PASS",
+        "WAIT",
+        "PARALLEL",
+        "MAP",
+        "CHOICES",
+        "VARIABLE",
+        "DEFAULT",
+        "BRANCHES",
+        "AND",
+        "BOOLEANEQUALS",
+        "BOOLEANQUALSPATH",
+        "ISBOOLEAN",
+        "ISNULL",
+        "ISNUMERIC",
+        "ISPRESENT",
+        "ISSTRING",
+        "ISTIMESTAMP",
+        "NOT",
+        "NUMERICEQUALS",
+        "NUMERICEQUALSPATH",
+        "NUMERICGREATERTHAN",
+        "NUMERICGREATERTHANPATH",
+        "NUMERICGREATERTHANEQUALS",
+        "NUMERICGREATERTHANEQUALSPATH",
+        "NUMERICLESSTHAN",
+        "NUMERICLESSTHANPATH",
+        "NUMERICLESSTHANEQUALS",
+        "NUMERICLESSTHANEQUALSPATH",
+        "OR",
+        "STRINGEQUALS",
+        "STRINGEQUALSPATH",
+        "STRINGGREATERTHAN",
+        "STRINGGREATERTHANPATH",
+        "STRINGGREATERTHANEQUALS",
+        "STRINGGREATERTHANEQUALSPATH",
+        "STRINGLESSTHAN",
+        "STRINGLESSTHANPATH",
+        "STRINGLESSTHANEQUALS",
+        "STRINGLESSTHANEQUALSPATH",
+        "STRINGMATCHES",
+        "TIMESTAMPEQUALS",
+        "TIMESTAMPEQUALSPATH",
+        "TIMESTAMPGREATERTHAN",
+        "TIMESTAMPGREATERTHANPATH",
+        "TIMESTAMPGREATERTHANEQUALS",
+        "TIMESTAMPGREATERTHANEQUALSPATH",
+        "TIMESTAMPLESSTHAN",
+        "TIMESTAMPLESSTHANPATH",
+        "TIMESTAMPLESSTHANEQUALS",
+        "TIMESTAMPLESSTHANEQUALSPATH",
+        "SECONDSPATH",
+        "SECONDS",
+        "TIMESTAMPPATH",
+        "TIMESTAMP",
+        "TIMEOUTSECONDS",
+        "TIMEOUTSECONDSPATH",
+        "HEARTBEATSECONDS",
+        "HEARTBEATSECONDSPATH",
+        "PROCESSORCONFIG",
+        "MODE",
+        "INLINE",
+        "DISTRIBUTED",
+        "EXECUTIONTYPE",
+        "STANDARD",
+        "ITEMPROCESSOR",
+        "ITERATOR",
+        "ITEMSELECTOR",
+        "MAXCONCURRENCY",
+        "RESOURCE",
+        "INPUTPATH",
+        "OUTPUTPATH",
+        "ITEMSPATH",
+        "RESULTPATH",
+        "RESULT",
+        "PARAMETERS",
+        "RESULTSELECTOR",
+        "ITEMREADER",
+        "READERCONFIG",
+        "INPUTTYPE",
+        "CSVHEADERLOCATION",
+        "CSVHEADERS",
+        "MAXITEMS",
+        "MAXITEMSPATH",
+        "NEXT",
+        "END",
+        "CAUSE",
+        "ERROR",
+        "RETRY",
+        "ERROREQUALS",
+        "INTERVALSECONDS",
+        "MAXATTEMPTS",
+        "BACKOFFRATE",
+        "CATCH",
+        "ERRORNAMEStatesALL",
+        "ERRORNAMEStatesHeartbeatTimeout",
+        "ERRORNAMEStatesTimeout",
+        "ERRORNAMEStatesTaskFailed",
+        "ERRORNAMEStatesPermissions",
+        "ERRORNAMEStatesResultPathMatchFailure",
+        "ERRORNAMEStatesParameterPathFailure",
+        "ERRORNAMEStatesBranchFailed",
+        "ERRORNAMEStatesNoChoiceMatched",
+        "ERRORNAMEStatesIntrinsicFailure",
+        "ERRORNAMEStatesExceedToleratedFailureThreshold",
+        "ERRORNAMEStatesItemReaderFailed",
+        "ERRORNAMEStatesResultWriterFailed",
+        "ERRORNAMEStatesRuntime",
+        "STRINGDOLLAR",
+        "STRINGPATHCONTEXTOBJ",
+        "STRINGPATH",
+        "STRING",
+        "INT",
+        "NUMBER",
+        "WS",
+    ]
+
+    RULE_program_decl = 0
+    RULE_top_layer_stmt = 1
+    RULE_startat_decl = 2
+    RULE_comment_decl = 3
+    RULE_version_decl = 4
+    RULE_state_stmt = 5
+    RULE_states_decl = 6
+    RULE_state_name = 7
+    RULE_state_decl = 8
+    RULE_state_decl_body = 9
+    RULE_type_decl = 10
+    RULE_next_decl = 11
+    RULE_resource_decl = 12
+    RULE_input_path_decl = 13
+    RULE_result_decl = 14
+    RULE_result_path_decl = 15
+    RULE_output_path_decl = 16
+    RULE_end_decl = 17
+    RULE_default_decl = 18
+    RULE_error_decl = 19
+    RULE_cause_decl = 20
+    RULE_seconds_decl = 21
+    RULE_seconds_path_decl = 22
+    RULE_timestamp_decl = 23
+    RULE_timestamp_path_decl = 24
+    RULE_items_path_decl = 25
+    RULE_max_concurrency_decl = 26
+    RULE_parameters_decl = 27
+    RULE_timeout_seconds_decl = 28
+    RULE_timeout_seconds_path_decl = 29
+    RULE_heartbeat_seconds_decl = 30
+    RULE_heartbeat_seconds_path_decl = 31
+    RULE_payload_tmpl_decl = 32
+    RULE_payload_binding = 33
+    RULE_intrinsic_func = 34
+    RULE_payload_arr_decl = 35
+    RULE_payload_value_decl = 36
+    RULE_payload_value_lit = 37
+    RULE_result_selector_decl = 38
+    RULE_state_type = 39
+    RULE_choices_decl = 40
+    RULE_choice_rule = 41
+    RULE_comparison_variable_stmt = 42
+    RULE_comparison_composite_stmt = 43
+    RULE_comparison_composite = 44
+    RULE_variable_decl = 45
+    RULE_comparison_func = 46
+    RULE_branches_decl = 47
+    RULE_item_processor_decl = 48
+    RULE_item_processor_item = 49
+    RULE_processor_config_decl = 50
+    RULE_processor_config_field = 51
+    RULE_mode_decl = 52
+    RULE_mode_type = 53
+    RULE_execution_decl = 54
+    RULE_execution_type = 55
+    RULE_iterator_decl = 56
+    RULE_iterator_decl_item = 57
+    RULE_item_selector_decl = 58
+    RULE_item_reader_decl = 59
+    RULE_items_reader_field = 60
+    RULE_reader_config_decl = 61
+    RULE_reader_config_field = 62
+    RULE_input_type_decl = 63
+    RULE_csv_header_location_decl = 64
+    RULE_csv_headers_decl = 65
+    RULE_max_items_decl = 66
+    RULE_max_items_path_decl = 67
+    RULE_retry_decl = 68
+    RULE_retrier_decl = 69
+    RULE_retrier_stmt = 70
+    RULE_error_equals_decl = 71
+    RULE_interval_seconds_decl = 72
+    RULE_max_attempts_decl = 73
+    RULE_backoff_rate_decl = 74
+    RULE_catch_decl = 75
+    RULE_catcher_decl = 76
+    RULE_catcher_stmt = 77
+    RULE_comparison_op = 78
+    RULE_choice_operator = 79
+    RULE_states_error_name = 80
+    RULE_error_name = 81
+    RULE_json_obj_decl = 82
+    RULE_json_binding = 83
+    RULE_json_arr_decl = 84
+    RULE_json_value_decl = 85
+    RULE_keyword_or_string = 86
+
+    ruleNames = [
+        "program_decl",
+        "top_layer_stmt",
+        "startat_decl",
+        "comment_decl",
+        "version_decl",
+        "state_stmt",
+        "states_decl",
+        "state_name",
+        "state_decl",
+        "state_decl_body",
+        "type_decl",
+        "next_decl",
+        "resource_decl",
+        "input_path_decl",
+        "result_decl",
+        "result_path_decl",
+        "output_path_decl",
+        "end_decl",
+        "default_decl",
+        "error_decl",
+        "cause_decl",
+        "seconds_decl",
+        "seconds_path_decl",
+        "timestamp_decl",
+        "timestamp_path_decl",
+        "items_path_decl",
+        "max_concurrency_decl",
+        "parameters_decl",
+        "timeout_seconds_decl",
+        "timeout_seconds_path_decl",
+        "heartbeat_seconds_decl",
+        "heartbeat_seconds_path_decl",
+        "payload_tmpl_decl",
+        "payload_binding",
+        "intrinsic_func",
+        "payload_arr_decl",
+        "payload_value_decl",
+        "payload_value_lit",
+        "result_selector_decl",
+        "state_type",
+        "choices_decl",
+        "choice_rule",
+        "comparison_variable_stmt",
+        "comparison_composite_stmt",
+        "comparison_composite",
+        "variable_decl",
+        "comparison_func",
+        "branches_decl",
+        "item_processor_decl",
+        "item_processor_item",
+        "processor_config_decl",
+        "processor_config_field",
+        "mode_decl",
+        "mode_type",
+        "execution_decl",
+        "execution_type",
+        "iterator_decl",
+        "iterator_decl_item",
+        "item_selector_decl",
+        "item_reader_decl",
+        "items_reader_field",
+        "reader_config_decl",
+        "reader_config_field",
+        "input_type_decl",
+        "csv_header_location_decl",
+        "csv_headers_decl",
+        "max_items_decl",
+        "max_items_path_decl",
+        "retry_decl",
+        "retrier_decl",
+        "retrier_stmt",
+        "error_equals_decl",
+        "interval_seconds_decl",
+        "max_attempts_decl",
+        "backoff_rate_decl",
+        "catch_decl",
+        "catcher_decl",
+        "catcher_stmt",
+        "comparison_op",
+        "choice_operator",
+        "states_error_name",
+        "error_name",
+        "json_obj_decl",
+        "json_binding",
+        "json_arr_decl",
+        "json_value_decl",
+        "keyword_or_string",
+    ]
+
+    EOF = Token.EOF
+    COMMA = 1
+    COLON = 2
+    LBRACK = 3
+    RBRACK = 4
+    LBRACE = 5
+    RBRACE = 6
+    TRUE = 7
+    FALSE = 8
+    NULL = 9
+    COMMENT = 10
+    STATES = 11
+    STARTAT = 12
+    NEXTSTATE = 13
+    VERSION = 14
+    TYPE = 15
+    TASK = 16
+    CHOICE = 17
+    FAIL = 18
+    SUCCEED = 19
+    PASS = 20
+    WAIT = 21
+    PARALLEL = 22
+    MAP = 23
+    CHOICES = 24
+    VARIABLE = 25
+    DEFAULT = 26
+    BRANCHES = 27
+    AND = 28
+    BOOLEANEQUALS = 29
+    BOOLEANQUALSPATH = 30
+    ISBOOLEAN = 31
+    ISNULL = 32
+    ISNUMERIC = 33
+    ISPRESENT = 34
+    ISSTRING = 35
+    ISTIMESTAMP = 36
+    NOT = 37
+    NUMERICEQUALS = 38
+    NUMERICEQUALSPATH = 39
+    NUMERICGREATERTHAN = 40
+    NUMERICGREATERTHANPATH = 41
+    NUMERICGREATERTHANEQUALS = 42
+    NUMERICGREATERTHANEQUALSPATH = 43
+    NUMERICLESSTHAN = 44
+    NUMERICLESSTHANPATH = 45
+    NUMERICLESSTHANEQUALS = 46
+    NUMERICLESSTHANEQUALSPATH = 47
+    OR = 48
+    STRINGEQUALS = 49
+    STRINGEQUALSPATH = 50
+    STRINGGREATERTHAN = 51
+    STRINGGREATERTHANPATH = 52
+    STRINGGREATERTHANEQUALS = 53
+    STRINGGREATERTHANEQUALSPATH = 54
+    STRINGLESSTHAN = 55
+    STRINGLESSTHANPATH = 56
+    STRINGLESSTHANEQUALS = 57
+    STRINGLESSTHANEQUALSPATH = 58
+    STRINGMATCHES = 59
+    TIMESTAMPEQUALS = 60
+    TIMESTAMPEQUALSPATH = 61
+    TIMESTAMPGREATERTHAN = 62
+    TIMESTAMPGREATERTHANPATH = 63
+    TIMESTAMPGREATERTHANEQUALS = 64
+    TIMESTAMPGREATERTHANEQUALSPATH = 65
+    TIMESTAMPLESSTHAN = 66
+    TIMESTAMPLESSTHANPATH = 67
+    TIMESTAMPLESSTHANEQUALS = 68
+    TIMESTAMPLESSTHANEQUALSPATH = 69
+    SECONDSPATH = 70
+    SECONDS = 71
+    TIMESTAMPPATH = 72
+    TIMESTAMP = 73
+    TIMEOUTSECONDS = 74
+    TIMEOUTSECONDSPATH = 75
+    HEARTBEATSECONDS = 76
+    HEARTBEATSECONDSPATH = 77
+    PROCESSORCONFIG = 78
+    MODE = 79
+    INLINE = 80
+    DISTRIBUTED = 81
+    EXECUTIONTYPE = 82
+    STANDARD = 83
+    ITEMPROCESSOR = 84
+    ITERATOR = 85
+    ITEMSELECTOR = 86
+    MAXCONCURRENCY = 87
+    RESOURCE = 88
+    INPUTPATH = 89
+    OUTPUTPATH = 90
+    ITEMSPATH = 91
+    RESULTPATH = 92
+    RESULT = 93
+    PARAMETERS = 94
+    RESULTSELECTOR = 95
+    ITEMREADER = 96
+    READERCONFIG = 97
+    INPUTTYPE = 98
+    CSVHEADERLOCATION = 99
+    CSVHEADERS = 100
+    MAXITEMS = 101
+    MAXITEMSPATH = 102
+    NEXT = 103
+    END = 104
+    CAUSE = 105
+    ERROR = 106
+    RETRY = 107
+    ERROREQUALS = 108
+    INTERVALSECONDS = 109
+    MAXATTEMPTS = 110
+    BACKOFFRATE = 111
+    CATCH = 112
+    ERRORNAMEStatesALL = 113
+    ERRORNAMEStatesHeartbeatTimeout = 114
+    ERRORNAMEStatesTimeout = 115
+    ERRORNAMEStatesTaskFailed = 116
+    ERRORNAMEStatesPermissions = 117
+    ERRORNAMEStatesResultPathMatchFailure = 118
+    ERRORNAMEStatesParameterPathFailure = 119
+    ERRORNAMEStatesBranchFailed = 120
+    ERRORNAMEStatesNoChoiceMatched = 121
+    ERRORNAMEStatesIntrinsicFailure = 122
+    ERRORNAMEStatesExceedToleratedFailureThreshold = 123
+    ERRORNAMEStatesItemReaderFailed = 124
+    ERRORNAMEStatesResultWriterFailed = 125
+    ERRORNAMEStatesRuntime = 126
+    STRINGDOLLAR = 127
+    STRINGPATHCONTEXTOBJ = 128
+    STRINGPATH = 129
+    STRING = 130
+    INT = 131
+    NUMBER = 132
+    WS = 133
+
+    def __init__(self, input: TokenStream, output: TextIO = sys.stdout):
+        super().__init__(input, output)
+        self.checkVersion("4.13.1")
+        self._interp = ParserATNSimulator(
+            self, self.atn, self.decisionsToDFA, self.sharedContextCache
+        )
+        self._predicates = None
+
+    class Program_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def top_layer_stmt(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Top_layer_stmtContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Top_layer_stmtContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_program_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterProgram_decl"):
+                listener.enterProgram_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitProgram_decl"):
+                listener.exitProgram_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitProgram_decl"):
+                return visitor.visitProgram_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def program_decl(self):
+
+        localctx = ASLParser.Program_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 0, self.RULE_program_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 174
+            self.match(ASLParser.LBRACE)
+            self.state = 175
+            self.top_layer_stmt()
+            self.state = 180
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 176
+                self.match(ASLParser.COMMA)
+                self.state = 177
+                self.top_layer_stmt()
+                self.state = 182
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 183
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Top_layer_stmtContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def comment_decl(self):
+            return self.getTypedRuleContext(ASLParser.Comment_declContext, 0)
+
+        def version_decl(self):
+            return self.getTypedRuleContext(ASLParser.Version_declContext, 0)
+
+        def startat_decl(self):
+            return self.getTypedRuleContext(ASLParser.Startat_declContext, 0)
+
+        def states_decl(self):
+            return self.getTypedRuleContext(ASLParser.States_declContext, 0)
+
+        def timeout_seconds_decl(self):
+            return self.getTypedRuleContext(ASLParser.Timeout_seconds_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_top_layer_stmt
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterTop_layer_stmt"):
+                listener.enterTop_layer_stmt(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitTop_layer_stmt"):
+                listener.exitTop_layer_stmt(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitTop_layer_stmt"):
+                return visitor.visitTop_layer_stmt(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def top_layer_stmt(self):
+
+        localctx = ASLParser.Top_layer_stmtContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 2, self.RULE_top_layer_stmt)
+        try:
+            self.state = 190
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [10]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 185
+                self.comment_decl()
+                pass
+            elif token in [14]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 186
+                self.version_decl()
+                pass
+            elif token in [12]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 187
+                self.startat_decl()
+                pass
+            elif token in [11]:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 188
+                self.states_decl()
+                pass
+            elif token in [74]:
+                self.enterOuterAlt(localctx, 5)
+                self.state = 189
+                self.timeout_seconds_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Startat_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def STARTAT(self):
+            return self.getToken(ASLParser.STARTAT, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_startat_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterStartat_decl"):
+                listener.enterStartat_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitStartat_decl"):
+                listener.exitStartat_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitStartat_decl"):
+                return visitor.visitStartat_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def startat_decl(self):
+
+        localctx = ASLParser.Startat_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 4, self.RULE_startat_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 192
+            self.match(ASLParser.STARTAT)
+            self.state = 193
+            self.match(ASLParser.COLON)
+            self.state = 194
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Comment_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def COMMENT(self):
+            return self.getToken(ASLParser.COMMENT, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_comment_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterComment_decl"):
+                listener.enterComment_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitComment_decl"):
+                listener.exitComment_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitComment_decl"):
+                return visitor.visitComment_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def comment_decl(self):
+
+        localctx = ASLParser.Comment_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 6, self.RULE_comment_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 196
+            self.match(ASLParser.COMMENT)
+            self.state = 197
+            self.match(ASLParser.COLON)
+            self.state = 198
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Version_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def VERSION(self):
+            return self.getToken(ASLParser.VERSION, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_version_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterVersion_decl"):
+                listener.enterVersion_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitVersion_decl"):
+                listener.exitVersion_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitVersion_decl"):
+                return visitor.visitVersion_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def version_decl(self):
+
+        localctx = ASLParser.Version_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 8, self.RULE_version_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 200
+            self.match(ASLParser.VERSION)
+            self.state = 201
+            self.match(ASLParser.COLON)
+            self.state = 202
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class State_stmtContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def comment_decl(self):
+            return self.getTypedRuleContext(ASLParser.Comment_declContext, 0)
+
+        def type_decl(self):
+            return self.getTypedRuleContext(ASLParser.Type_declContext, 0)
+
+        def input_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Input_path_declContext, 0)
+
+        def resource_decl(self):
+            return self.getTypedRuleContext(ASLParser.Resource_declContext, 0)
+
+        def next_decl(self):
+            return self.getTypedRuleContext(ASLParser.Next_declContext, 0)
+
+        def result_decl(self):
+            return self.getTypedRuleContext(ASLParser.Result_declContext, 0)
+
+        def result_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Result_path_declContext, 0)
+
+        def output_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Output_path_declContext, 0)
+
+        def end_decl(self):
+            return self.getTypedRuleContext(ASLParser.End_declContext, 0)
+
+        def default_decl(self):
+            return self.getTypedRuleContext(ASLParser.Default_declContext, 0)
+
+        def choices_decl(self):
+            return self.getTypedRuleContext(ASLParser.Choices_declContext, 0)
+
+        def error_decl(self):
+            return self.getTypedRuleContext(ASLParser.Error_declContext, 0)
+
+        def cause_decl(self):
+            return self.getTypedRuleContext(ASLParser.Cause_declContext, 0)
+
+        def seconds_decl(self):
+            return self.getTypedRuleContext(ASLParser.Seconds_declContext, 0)
+
+        def seconds_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Seconds_path_declContext, 0)
+
+        def timestamp_decl(self):
+            return self.getTypedRuleContext(ASLParser.Timestamp_declContext, 0)
+
+        def timestamp_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Timestamp_path_declContext, 0)
+
+        def items_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Items_path_declContext, 0)
+
+        def item_processor_decl(self):
+            return self.getTypedRuleContext(ASLParser.Item_processor_declContext, 0)
+
+        def iterator_decl(self):
+            return self.getTypedRuleContext(ASLParser.Iterator_declContext, 0)
+
+        def item_selector_decl(self):
+            return self.getTypedRuleContext(ASLParser.Item_selector_declContext, 0)
+
+        def item_reader_decl(self):
+            return self.getTypedRuleContext(ASLParser.Item_reader_declContext, 0)
+
+        def max_concurrency_decl(self):
+            return self.getTypedRuleContext(ASLParser.Max_concurrency_declContext, 0)
+
+        def timeout_seconds_decl(self):
+            return self.getTypedRuleContext(ASLParser.Timeout_seconds_declContext, 0)
+
+        def timeout_seconds_path_decl(self):
+            return self.getTypedRuleContext(
+                ASLParser.Timeout_seconds_path_declContext, 0
+            )
+
+        def heartbeat_seconds_decl(self):
+            return self.getTypedRuleContext(ASLParser.Heartbeat_seconds_declContext, 0)
+
+        def heartbeat_seconds_path_decl(self):
+            return self.getTypedRuleContext(
+                ASLParser.Heartbeat_seconds_path_declContext, 0
+            )
+
+        def branches_decl(self):
+            return self.getTypedRuleContext(ASLParser.Branches_declContext, 0)
+
+        def parameters_decl(self):
+            return self.getTypedRuleContext(ASLParser.Parameters_declContext, 0)
+
+        def retry_decl(self):
+            return self.getTypedRuleContext(ASLParser.Retry_declContext, 0)
+
+        def catch_decl(self):
+            return self.getTypedRuleContext(ASLParser.Catch_declContext, 0)
+
+        def result_selector_decl(self):
+            return self.getTypedRuleContext(ASLParser.Result_selector_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_state_stmt
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterState_stmt"):
+                listener.enterState_stmt(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitState_stmt"):
+                listener.exitState_stmt(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitState_stmt"):
+                return visitor.visitState_stmt(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def state_stmt(self):
+
+        localctx = ASLParser.State_stmtContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 10, self.RULE_state_stmt)
+        try:
+            self.state = 236
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [10]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 204
+                self.comment_decl()
+                pass
+            elif token in [15]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 205
+                self.type_decl()
+                pass
+            elif token in [89]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 206
+                self.input_path_decl()
+                pass
+            elif token in [88]:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 207
+                self.resource_decl()
+                pass
+            elif token in [103]:
+                self.enterOuterAlt(localctx, 5)
+                self.state = 208
+                self.next_decl()
+                pass
+            elif token in [93]:
+                self.enterOuterAlt(localctx, 6)
+                self.state = 209
+                self.result_decl()
+                pass
+            elif token in [92]:
+                self.enterOuterAlt(localctx, 7)
+                self.state = 210
+                self.result_path_decl()
+                pass
+            elif token in [90]:
+                self.enterOuterAlt(localctx, 8)
+                self.state = 211
+                self.output_path_decl()
+                pass
+            elif token in [104]:
+                self.enterOuterAlt(localctx, 9)
+                self.state = 212
+                self.end_decl()
+                pass
+            elif token in [26]:
+                self.enterOuterAlt(localctx, 10)
+                self.state = 213
+                self.default_decl()
+                pass
+            elif token in [24]:
+                self.enterOuterAlt(localctx, 11)
+                self.state = 214
+                self.choices_decl()
+                pass
+            elif token in [106]:
+                self.enterOuterAlt(localctx, 12)
+                self.state = 215
+                self.error_decl()
+                pass
+            elif token in [105]:
+                self.enterOuterAlt(localctx, 13)
+                self.state = 216
+                self.cause_decl()
+                pass
+            elif token in [71]:
+                self.enterOuterAlt(localctx, 14)
+                self.state = 217
+                self.seconds_decl()
+                pass
+            elif token in [70]:
+                self.enterOuterAlt(localctx, 15)
+                self.state = 218
+                self.seconds_path_decl()
+                pass
+            elif token in [73]:
+                self.enterOuterAlt(localctx, 16)
+                self.state = 219
+                self.timestamp_decl()
+                pass
+            elif token in [72]:
+                self.enterOuterAlt(localctx, 17)
+                self.state = 220
+                self.timestamp_path_decl()
+                pass
+            elif token in [91]:
+                self.enterOuterAlt(localctx, 18)
+                self.state = 221
+                self.items_path_decl()
+                pass
+            elif token in [84]:
+                self.enterOuterAlt(localctx, 19)
+                self.state = 222
+                self.item_processor_decl()
+                pass
+            elif token in [85]:
+                self.enterOuterAlt(localctx, 20)
+                self.state = 223
+                self.iterator_decl()
+                pass
+            elif token in [86]:
+                self.enterOuterAlt(localctx, 21)
+                self.state = 224
+                self.item_selector_decl()
+                pass
+            elif token in [96]:
+                self.enterOuterAlt(localctx, 22)
+                self.state = 225
+                self.item_reader_decl()
+                pass
+            elif token in [87]:
+                self.enterOuterAlt(localctx, 23)
+                self.state = 226
+                self.max_concurrency_decl()
+                pass
+            elif token in [74]:
+                self.enterOuterAlt(localctx, 24)
+                self.state = 227
+                self.timeout_seconds_decl()
+                pass
+            elif token in [75]:
+                self.enterOuterAlt(localctx, 25)
+                self.state = 228
+                self.timeout_seconds_path_decl()
+                pass
+            elif token in [76]:
+                self.enterOuterAlt(localctx, 26)
+                self.state = 229
+                self.heartbeat_seconds_decl()
+                pass
+            elif token in [77]:
+                self.enterOuterAlt(localctx, 27)
+                self.state = 230
+                self.heartbeat_seconds_path_decl()
+                pass
+            elif token in [27]:
+                self.enterOuterAlt(localctx, 28)
+                self.state = 231
+                self.branches_decl()
+                pass
+            elif token in [94]:
+                self.enterOuterAlt(localctx, 29)
+                self.state = 232
+                self.parameters_decl()
+                pass
+            elif token in [107]:
+                self.enterOuterAlt(localctx, 30)
+                self.state = 233
+                self.retry_decl()
+                pass
+            elif token in [112]:
+                self.enterOuterAlt(localctx, 31)
+                self.state = 234
+                self.catch_decl()
+                pass
+            elif token in [95]:
+                self.enterOuterAlt(localctx, 32)
+                self.state = 235
+                self.result_selector_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class States_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def STATES(self):
+            return self.getToken(ASLParser.STATES, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def state_decl(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.State_declContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.State_declContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_states_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterStates_decl"):
+                listener.enterStates_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitStates_decl"):
+                listener.exitStates_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitStates_decl"):
+                return visitor.visitStates_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def states_decl(self):
+
+        localctx = ASLParser.States_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 12, self.RULE_states_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 238
+            self.match(ASLParser.STATES)
+            self.state = 239
+            self.match(ASLParser.COLON)
+            self.state = 240
+            self.match(ASLParser.LBRACE)
+            self.state = 241
+            self.state_decl()
+            self.state = 246
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 242
+                self.match(ASLParser.COMMA)
+                self.state = 243
+                self.state_decl()
+                self.state = 248
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 249
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class State_nameContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_state_name
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterState_name"):
+                listener.enterState_name(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitState_name"):
+                listener.exitState_name(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitState_name"):
+                return visitor.visitState_name(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def state_name(self):
+
+        localctx = ASLParser.State_nameContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 14, self.RULE_state_name)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 251
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class State_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def state_name(self):
+            return self.getTypedRuleContext(ASLParser.State_nameContext, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def state_decl_body(self):
+            return self.getTypedRuleContext(ASLParser.State_decl_bodyContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_state_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterState_decl"):
+                listener.enterState_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitState_decl"):
+                listener.exitState_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitState_decl"):
+                return visitor.visitState_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def state_decl(self):
+
+        localctx = ASLParser.State_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 16, self.RULE_state_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 253
+            self.state_name()
+            self.state = 254
+            self.match(ASLParser.COLON)
+            self.state = 255
+            self.state_decl_body()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class State_decl_bodyContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def state_stmt(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.State_stmtContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.State_stmtContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_state_decl_body
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterState_decl_body"):
+                listener.enterState_decl_body(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitState_decl_body"):
+                listener.exitState_decl_body(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitState_decl_body"):
+                return visitor.visitState_decl_body(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def state_decl_body(self):
+
+        localctx = ASLParser.State_decl_bodyContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 18, self.RULE_state_decl_body)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 257
+            self.match(ASLParser.LBRACE)
+            self.state = 258
+            self.state_stmt()
+            self.state = 263
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 259
+                self.match(ASLParser.COMMA)
+                self.state = 260
+                self.state_stmt()
+                self.state = 265
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 266
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Type_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def TYPE(self):
+            return self.getToken(ASLParser.TYPE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def state_type(self):
+            return self.getTypedRuleContext(ASLParser.State_typeContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_type_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterType_decl"):
+                listener.enterType_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitType_decl"):
+                listener.exitType_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitType_decl"):
+                return visitor.visitType_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def type_decl(self):
+
+        localctx = ASLParser.Type_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 20, self.RULE_type_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 268
+            self.match(ASLParser.TYPE)
+            self.state = 269
+            self.match(ASLParser.COLON)
+            self.state = 270
+            self.state_type()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Next_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def NEXT(self):
+            return self.getToken(ASLParser.NEXT, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_next_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterNext_decl"):
+                listener.enterNext_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitNext_decl"):
+                listener.exitNext_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitNext_decl"):
+                return visitor.visitNext_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def next_decl(self):
+
+        localctx = ASLParser.Next_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 22, self.RULE_next_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 272
+            self.match(ASLParser.NEXT)
+            self.state = 273
+            self.match(ASLParser.COLON)
+            self.state = 274
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Resource_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def RESOURCE(self):
+            return self.getToken(ASLParser.RESOURCE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_resource_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterResource_decl"):
+                listener.enterResource_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitResource_decl"):
+                listener.exitResource_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitResource_decl"):
+                return visitor.visitResource_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def resource_decl(self):
+
+        localctx = ASLParser.Resource_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 24, self.RULE_resource_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 276
+            self.match(ASLParser.RESOURCE)
+            self.state = 277
+            self.match(ASLParser.COLON)
+            self.state = 278
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Input_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def INPUTPATH(self):
+            return self.getToken(ASLParser.INPUTPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def NULL(self):
+            return self.getToken(ASLParser.NULL, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_input_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterInput_path_decl"):
+                listener.enterInput_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitInput_path_decl"):
+                listener.exitInput_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitInput_path_decl"):
+                return visitor.visitInput_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def input_path_decl(self):
+
+        localctx = ASLParser.Input_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 26, self.RULE_input_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 280
+            self.match(ASLParser.INPUTPATH)
+            self.state = 281
+            self.match(ASLParser.COLON)
+            self.state = 284
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [9]:
+                self.state = 282
+                self.match(ASLParser.NULL)
+                pass
+            elif token in [
+                10,
+                11,
+                12,
+                13,
+                15,
+                16,
+                17,
+                18,
+                19,
+                20,
+                21,
+                22,
+                23,
+                24,
+                25,
+                26,
+                27,
+                28,
+                29,
+                30,
+                31,
+                32,
+                33,
+                34,
+                35,
+                36,
+                37,
+                38,
+                39,
+                40,
+                41,
+                42,
+                43,
+                44,
+                45,
+                46,
+                47,
+                48,
+                49,
+                50,
+                51,
+                52,
+                53,
+                54,
+                55,
+                56,
+                57,
+                58,
+                59,
+                60,
+                61,
+                62,
+                63,
+                64,
+                65,
+                66,
+                67,
+                68,
+                69,
+                70,
+                71,
+                72,
+                73,
+                74,
+                75,
+                76,
+                77,
+                78,
+                79,
+                80,
+                81,
+                82,
+                83,
+                84,
+                85,
+                86,
+                87,
+                88,
+                89,
+                90,
+                91,
+                92,
+                93,
+                94,
+                95,
+                96,
+                97,
+                98,
+                99,
+                100,
+                101,
+                102,
+                103,
+                104,
+                105,
+                106,
+                107,
+                108,
+                109,
+                110,
+                111,
+                112,
+                113,
+                114,
+                115,
+                116,
+                117,
+                118,
+                119,
+                120,
+                121,
+                122,
+                123,
+                124,
+                125,
+                126,
+                127,
+                128,
+                129,
+                130,
+            ]:
+                self.state = 283
+                self.keyword_or_string()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Result_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def RESULT(self):
+            return self.getToken(ASLParser.RESULT, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def json_value_decl(self):
+            return self.getTypedRuleContext(ASLParser.Json_value_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_result_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterResult_decl"):
+                listener.enterResult_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitResult_decl"):
+                listener.exitResult_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitResult_decl"):
+                return visitor.visitResult_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def result_decl(self):
+
+        localctx = ASLParser.Result_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 28, self.RULE_result_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 286
+            self.match(ASLParser.RESULT)
+            self.state = 287
+            self.match(ASLParser.COLON)
+            self.state = 288
+            self.json_value_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Result_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def RESULTPATH(self):
+            return self.getToken(ASLParser.RESULTPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def NULL(self):
+            return self.getToken(ASLParser.NULL, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_result_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterResult_path_decl"):
+                listener.enterResult_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitResult_path_decl"):
+                listener.exitResult_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitResult_path_decl"):
+                return visitor.visitResult_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def result_path_decl(self):
+
+        localctx = ASLParser.Result_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 30, self.RULE_result_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 290
+            self.match(ASLParser.RESULTPATH)
+            self.state = 291
+            self.match(ASLParser.COLON)
+            self.state = 294
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [9]:
+                self.state = 292
+                self.match(ASLParser.NULL)
+                pass
+            elif token in [
+                10,
+                11,
+                12,
+                13,
+                15,
+                16,
+                17,
+                18,
+                19,
+                20,
+                21,
+                22,
+                23,
+                24,
+                25,
+                26,
+                27,
+                28,
+                29,
+                30,
+                31,
+                32,
+                33,
+                34,
+                35,
+                36,
+                37,
+                38,
+                39,
+                40,
+                41,
+                42,
+                43,
+                44,
+                45,
+                46,
+                47,
+                48,
+                49,
+                50,
+                51,
+                52,
+                53,
+                54,
+                55,
+                56,
+                57,
+                58,
+                59,
+                60,
+                61,
+                62,
+                63,
+                64,
+                65,
+                66,
+                67,
+                68,
+                69,
+                70,
+                71,
+                72,
+                73,
+                74,
+                75,
+                76,
+                77,
+                78,
+                79,
+                80,
+                81,
+                82,
+                83,
+                84,
+                85,
+                86,
+                87,
+                88,
+                89,
+                90,
+                91,
+                92,
+                93,
+                94,
+                95,
+                96,
+                97,
+                98,
+                99,
+                100,
+                101,
+                102,
+                103,
+                104,
+                105,
+                106,
+                107,
+                108,
+                109,
+                110,
+                111,
+                112,
+                113,
+                114,
+                115,
+                116,
+                117,
+                118,
+                119,
+                120,
+                121,
+                122,
+                123,
+                124,
+                125,
+                126,
+                127,
+                128,
+                129,
+                130,
+            ]:
+                self.state = 293
+                self.keyword_or_string()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Output_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def OUTPUTPATH(self):
+            return self.getToken(ASLParser.OUTPUTPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def NULL(self):
+            return self.getToken(ASLParser.NULL, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_output_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterOutput_path_decl"):
+                listener.enterOutput_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitOutput_path_decl"):
+                listener.exitOutput_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitOutput_path_decl"):
+                return visitor.visitOutput_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def output_path_decl(self):
+
+        localctx = ASLParser.Output_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 32, self.RULE_output_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 296
+            self.match(ASLParser.OUTPUTPATH)
+            self.state = 297
+            self.match(ASLParser.COLON)
+            self.state = 300
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [9]:
+                self.state = 298
+                self.match(ASLParser.NULL)
+                pass
+            elif token in [
+                10,
+                11,
+                12,
+                13,
+                15,
+                16,
+                17,
+                18,
+                19,
+                20,
+                21,
+                22,
+                23,
+                24,
+                25,
+                26,
+                27,
+                28,
+                29,
+                30,
+                31,
+                32,
+                33,
+                34,
+                35,
+                36,
+                37,
+                38,
+                39,
+                40,
+                41,
+                42,
+                43,
+                44,
+                45,
+                46,
+                47,
+                48,
+                49,
+                50,
+                51,
+                52,
+                53,
+                54,
+                55,
+                56,
+                57,
+                58,
+                59,
+                60,
+                61,
+                62,
+                63,
+                64,
+                65,
+                66,
+                67,
+                68,
+                69,
+                70,
+                71,
+                72,
+                73,
+                74,
+                75,
+                76,
+                77,
+                78,
+                79,
+                80,
+                81,
+                82,
+                83,
+                84,
+                85,
+                86,
+                87,
+                88,
+                89,
+                90,
+                91,
+                92,
+                93,
+                94,
+                95,
+                96,
+                97,
+                98,
+                99,
+                100,
+                101,
+                102,
+                103,
+                104,
+                105,
+                106,
+                107,
+                108,
+                109,
+                110,
+                111,
+                112,
+                113,
+                114,
+                115,
+                116,
+                117,
+                118,
+                119,
+                120,
+                121,
+                122,
+                123,
+                124,
+                125,
+                126,
+                127,
+                128,
+                129,
+                130,
+            ]:
+                self.state = 299
+                self.keyword_or_string()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class End_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def END(self):
+            return self.getToken(ASLParser.END, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def TRUE(self):
+            return self.getToken(ASLParser.TRUE, 0)
+
+        def FALSE(self):
+            return self.getToken(ASLParser.FALSE, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_end_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterEnd_decl"):
+                listener.enterEnd_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitEnd_decl"):
+                listener.exitEnd_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitEnd_decl"):
+                return visitor.visitEnd_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def end_decl(self):
+
+        localctx = ASLParser.End_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 34, self.RULE_end_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 302
+            self.match(ASLParser.END)
+            self.state = 303
+            self.match(ASLParser.COLON)
+            self.state = 304
+            _la = self._input.LA(1)
+            if not (_la == 7 or _la == 8):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Default_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def DEFAULT(self):
+            return self.getToken(ASLParser.DEFAULT, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_default_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterDefault_decl"):
+                listener.enterDefault_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitDefault_decl"):
+                listener.exitDefault_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitDefault_decl"):
+                return visitor.visitDefault_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def default_decl(self):
+
+        localctx = ASLParser.Default_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 36, self.RULE_default_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 306
+            self.match(ASLParser.DEFAULT)
+            self.state = 307
+            self.match(ASLParser.COLON)
+            self.state = 308
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Error_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ERROR(self):
+            return self.getToken(ASLParser.ERROR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_error_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterError_decl"):
+                listener.enterError_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitError_decl"):
+                listener.exitError_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitError_decl"):
+                return visitor.visitError_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def error_decl(self):
+
+        localctx = ASLParser.Error_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 38, self.RULE_error_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 310
+            self.match(ASLParser.ERROR)
+            self.state = 311
+            self.match(ASLParser.COLON)
+            self.state = 312
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Cause_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def CAUSE(self):
+            return self.getToken(ASLParser.CAUSE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_cause_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterCause_decl"):
+                listener.enterCause_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitCause_decl"):
+                listener.exitCause_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitCause_decl"):
+                return visitor.visitCause_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def cause_decl(self):
+
+        localctx = ASLParser.Cause_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 40, self.RULE_cause_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 314
+            self.match(ASLParser.CAUSE)
+            self.state = 315
+            self.match(ASLParser.COLON)
+            self.state = 316
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Seconds_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def SECONDS(self):
+            return self.getToken(ASLParser.SECONDS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_seconds_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterSeconds_decl"):
+                listener.enterSeconds_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitSeconds_decl"):
+                listener.exitSeconds_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitSeconds_decl"):
+                return visitor.visitSeconds_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def seconds_decl(self):
+
+        localctx = ASLParser.Seconds_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 42, self.RULE_seconds_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 318
+            self.match(ASLParser.SECONDS)
+            self.state = 319
+            self.match(ASLParser.COLON)
+            self.state = 320
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Seconds_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def SECONDSPATH(self):
+            return self.getToken(ASLParser.SECONDSPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_seconds_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterSeconds_path_decl"):
+                listener.enterSeconds_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitSeconds_path_decl"):
+                listener.exitSeconds_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitSeconds_path_decl"):
+                return visitor.visitSeconds_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def seconds_path_decl(self):
+
+        localctx = ASLParser.Seconds_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 44, self.RULE_seconds_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 322
+            self.match(ASLParser.SECONDSPATH)
+            self.state = 323
+            self.match(ASLParser.COLON)
+            self.state = 324
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Timestamp_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def TIMESTAMP(self):
+            return self.getToken(ASLParser.TIMESTAMP, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_timestamp_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterTimestamp_decl"):
+                listener.enterTimestamp_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitTimestamp_decl"):
+                listener.exitTimestamp_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitTimestamp_decl"):
+                return visitor.visitTimestamp_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def timestamp_decl(self):
+
+        localctx = ASLParser.Timestamp_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 46, self.RULE_timestamp_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 326
+            self.match(ASLParser.TIMESTAMP)
+            self.state = 327
+            self.match(ASLParser.COLON)
+            self.state = 328
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Timestamp_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def TIMESTAMPPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_timestamp_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterTimestamp_path_decl"):
+                listener.enterTimestamp_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitTimestamp_path_decl"):
+                listener.exitTimestamp_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitTimestamp_path_decl"):
+                return visitor.visitTimestamp_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def timestamp_path_decl(self):
+
+        localctx = ASLParser.Timestamp_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 48, self.RULE_timestamp_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 330
+            self.match(ASLParser.TIMESTAMPPATH)
+            self.state = 331
+            self.match(ASLParser.COLON)
+            self.state = 332
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Items_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ITEMSPATH(self):
+            return self.getToken(ASLParser.ITEMSPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_items_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterItems_path_decl"):
+                listener.enterItems_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitItems_path_decl"):
+                listener.exitItems_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitItems_path_decl"):
+                return visitor.visitItems_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def items_path_decl(self):
+
+        localctx = ASLParser.Items_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 50, self.RULE_items_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 334
+            self.match(ASLParser.ITEMSPATH)
+            self.state = 335
+            self.match(ASLParser.COLON)
+            self.state = 336
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Max_concurrency_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def MAXCONCURRENCY(self):
+            return self.getToken(ASLParser.MAXCONCURRENCY, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_max_concurrency_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterMax_concurrency_decl"):
+                listener.enterMax_concurrency_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitMax_concurrency_decl"):
+                listener.exitMax_concurrency_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitMax_concurrency_decl"):
+                return visitor.visitMax_concurrency_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def max_concurrency_decl(self):
+
+        localctx = ASLParser.Max_concurrency_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 52, self.RULE_max_concurrency_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 338
+            self.match(ASLParser.MAXCONCURRENCY)
+            self.state = 339
+            self.match(ASLParser.COLON)
+            self.state = 340
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Parameters_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def PARAMETERS(self):
+            return self.getToken(ASLParser.PARAMETERS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def payload_tmpl_decl(self):
+            return self.getTypedRuleContext(ASLParser.Payload_tmpl_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_parameters_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterParameters_decl"):
+                listener.enterParameters_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitParameters_decl"):
+                listener.exitParameters_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitParameters_decl"):
+                return visitor.visitParameters_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def parameters_decl(self):
+
+        localctx = ASLParser.Parameters_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 54, self.RULE_parameters_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 342
+            self.match(ASLParser.PARAMETERS)
+            self.state = 343
+            self.match(ASLParser.COLON)
+            self.state = 344
+            self.payload_tmpl_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Timeout_seconds_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def TIMEOUTSECONDS(self):
+            return self.getToken(ASLParser.TIMEOUTSECONDS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_timeout_seconds_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterTimeout_seconds_decl"):
+                listener.enterTimeout_seconds_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitTimeout_seconds_decl"):
+                listener.exitTimeout_seconds_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitTimeout_seconds_decl"):
+                return visitor.visitTimeout_seconds_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def timeout_seconds_decl(self):
+
+        localctx = ASLParser.Timeout_seconds_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 56, self.RULE_timeout_seconds_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 346
+            self.match(ASLParser.TIMEOUTSECONDS)
+            self.state = 347
+            self.match(ASLParser.COLON)
+            self.state = 348
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Timeout_seconds_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def TIMEOUTSECONDSPATH(self):
+            return self.getToken(ASLParser.TIMEOUTSECONDSPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def STRINGPATH(self):
+            return self.getToken(ASLParser.STRINGPATH, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_timeout_seconds_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterTimeout_seconds_path_decl"):
+                listener.enterTimeout_seconds_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitTimeout_seconds_path_decl"):
+                listener.exitTimeout_seconds_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitTimeout_seconds_path_decl"):
+                return visitor.visitTimeout_seconds_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def timeout_seconds_path_decl(self):
+
+        localctx = ASLParser.Timeout_seconds_path_declContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 58, self.RULE_timeout_seconds_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 350
+            self.match(ASLParser.TIMEOUTSECONDSPATH)
+            self.state = 351
+            self.match(ASLParser.COLON)
+            self.state = 352
+            self.match(ASLParser.STRINGPATH)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Heartbeat_seconds_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def HEARTBEATSECONDS(self):
+            return self.getToken(ASLParser.HEARTBEATSECONDS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_heartbeat_seconds_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterHeartbeat_seconds_decl"):
+                listener.enterHeartbeat_seconds_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitHeartbeat_seconds_decl"):
+                listener.exitHeartbeat_seconds_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitHeartbeat_seconds_decl"):
+                return visitor.visitHeartbeat_seconds_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def heartbeat_seconds_decl(self):
+
+        localctx = ASLParser.Heartbeat_seconds_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 60, self.RULE_heartbeat_seconds_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 354
+            self.match(ASLParser.HEARTBEATSECONDS)
+            self.state = 355
+            self.match(ASLParser.COLON)
+            self.state = 356
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Heartbeat_seconds_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def HEARTBEATSECONDSPATH(self):
+            return self.getToken(ASLParser.HEARTBEATSECONDSPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def STRINGPATH(self):
+            return self.getToken(ASLParser.STRINGPATH, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_heartbeat_seconds_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterHeartbeat_seconds_path_decl"):
+                listener.enterHeartbeat_seconds_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitHeartbeat_seconds_path_decl"):
+                listener.exitHeartbeat_seconds_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitHeartbeat_seconds_path_decl"):
+                return visitor.visitHeartbeat_seconds_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def heartbeat_seconds_path_decl(self):
+
+        localctx = ASLParser.Heartbeat_seconds_path_declContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 62, self.RULE_heartbeat_seconds_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 358
+            self.match(ASLParser.HEARTBEATSECONDSPATH)
+            self.state = 359
+            self.match(ASLParser.COLON)
+            self.state = 360
+            self.match(ASLParser.STRINGPATH)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Payload_tmpl_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def payload_binding(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Payload_bindingContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Payload_bindingContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_payload_tmpl_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_tmpl_decl"):
+                listener.enterPayload_tmpl_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_tmpl_decl"):
+                listener.exitPayload_tmpl_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_tmpl_decl"):
+                return visitor.visitPayload_tmpl_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def payload_tmpl_decl(self):
+
+        localctx = ASLParser.Payload_tmpl_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 64, self.RULE_payload_tmpl_decl)
+        self._la = 0  # Token type
+        try:
+            self.state = 375
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 9, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 362
+                self.match(ASLParser.LBRACE)
+                self.state = 363
+                self.payload_binding()
+                self.state = 368
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 364
+                    self.match(ASLParser.COMMA)
+                    self.state = 365
+                    self.payload_binding()
+                    self.state = 370
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 371
+                self.match(ASLParser.RBRACE)
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 373
+                self.match(ASLParser.LBRACE)
+                self.state = 374
+                self.match(ASLParser.RBRACE)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Payload_bindingContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_payload_binding
+
+        def copyFrom(self, ctx: ParserRuleContext):
+            super().copyFrom(ctx)
+
+    class Payload_binding_pathContext(Payload_bindingContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_bindingContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def STRINGDOLLAR(self):
+            return self.getToken(ASLParser.STRINGDOLLAR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def STRINGPATH(self):
+            return self.getToken(ASLParser.STRINGPATH, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_binding_path"):
+                listener.enterPayload_binding_path(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_binding_path"):
+                listener.exitPayload_binding_path(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_binding_path"):
+                return visitor.visitPayload_binding_path(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_binding_path_context_objContext(Payload_bindingContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_bindingContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def STRINGDOLLAR(self):
+            return self.getToken(ASLParser.STRINGDOLLAR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def STRINGPATHCONTEXTOBJ(self):
+            return self.getToken(ASLParser.STRINGPATHCONTEXTOBJ, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_binding_path_context_obj"):
+                listener.enterPayload_binding_path_context_obj(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_binding_path_context_obj"):
+                listener.exitPayload_binding_path_context_obj(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_binding_path_context_obj"):
+                return visitor.visitPayload_binding_path_context_obj(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_binding_intrinsic_funcContext(Payload_bindingContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_bindingContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def STRINGDOLLAR(self):
+            return self.getToken(ASLParser.STRINGDOLLAR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def intrinsic_func(self):
+            return self.getTypedRuleContext(ASLParser.Intrinsic_funcContext, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_binding_intrinsic_func"):
+                listener.enterPayload_binding_intrinsic_func(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_binding_intrinsic_func"):
+                listener.exitPayload_binding_intrinsic_func(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_binding_intrinsic_func"):
+                return visitor.visitPayload_binding_intrinsic_func(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_binding_valueContext(Payload_bindingContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_bindingContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def payload_value_decl(self):
+            return self.getTypedRuleContext(ASLParser.Payload_value_declContext, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_binding_value"):
+                listener.enterPayload_binding_value(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_binding_value"):
+                listener.exitPayload_binding_value(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_binding_value"):
+                return visitor.visitPayload_binding_value(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def payload_binding(self):
+
+        localctx = ASLParser.Payload_bindingContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 66, self.RULE_payload_binding)
+        try:
+            self.state = 390
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 10, self._ctx)
+            if la_ == 1:
+                localctx = ASLParser.Payload_binding_pathContext(self, localctx)
+                self.enterOuterAlt(localctx, 1)
+                self.state = 377
+                self.match(ASLParser.STRINGDOLLAR)
+                self.state = 378
+                self.match(ASLParser.COLON)
+                self.state = 379
+                self.match(ASLParser.STRINGPATH)
+                pass
+
+            elif la_ == 2:
+                localctx = ASLParser.Payload_binding_path_context_objContext(
+                    self, localctx
+                )
+                self.enterOuterAlt(localctx, 2)
+                self.state = 380
+                self.match(ASLParser.STRINGDOLLAR)
+                self.state = 381
+                self.match(ASLParser.COLON)
+                self.state = 382
+                self.match(ASLParser.STRINGPATHCONTEXTOBJ)
+                pass
+
+            elif la_ == 3:
+                localctx = ASLParser.Payload_binding_intrinsic_funcContext(
+                    self, localctx
+                )
+                self.enterOuterAlt(localctx, 3)
+                self.state = 383
+                self.match(ASLParser.STRINGDOLLAR)
+                self.state = 384
+                self.match(ASLParser.COLON)
+                self.state = 385
+                self.intrinsic_func()
+                pass
+
+            elif la_ == 4:
+                localctx = ASLParser.Payload_binding_valueContext(self, localctx)
+                self.enterOuterAlt(localctx, 4)
+                self.state = 386
+                self.keyword_or_string()
+                self.state = 387
+                self.match(ASLParser.COLON)
+                self.state = 388
+                self.payload_value_decl()
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Intrinsic_funcContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def STRING(self):
+            return self.getToken(ASLParser.STRING, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_intrinsic_func
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterIntrinsic_func"):
+                listener.enterIntrinsic_func(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitIntrinsic_func"):
+                listener.exitIntrinsic_func(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitIntrinsic_func"):
+                return visitor.visitIntrinsic_func(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def intrinsic_func(self):
+
+        localctx = ASLParser.Intrinsic_funcContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 68, self.RULE_intrinsic_func)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 392
+            self.match(ASLParser.STRING)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Payload_arr_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def payload_value_decl(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Payload_value_declContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Payload_value_declContext, i)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_payload_arr_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_arr_decl"):
+                listener.enterPayload_arr_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_arr_decl"):
+                listener.exitPayload_arr_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_arr_decl"):
+                return visitor.visitPayload_arr_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def payload_arr_decl(self):
+
+        localctx = ASLParser.Payload_arr_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 70, self.RULE_payload_arr_decl)
+        self._la = 0  # Token type
+        try:
+            self.state = 407
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 12, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 394
+                self.match(ASLParser.LBRACK)
+                self.state = 395
+                self.payload_value_decl()
+                self.state = 400
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 396
+                    self.match(ASLParser.COMMA)
+                    self.state = 397
+                    self.payload_value_decl()
+                    self.state = 402
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 403
+                self.match(ASLParser.RBRACK)
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 405
+                self.match(ASLParser.LBRACK)
+                self.state = 406
+                self.match(ASLParser.RBRACK)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Payload_value_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def payload_binding(self):
+            return self.getTypedRuleContext(ASLParser.Payload_bindingContext, 0)
+
+        def payload_arr_decl(self):
+            return self.getTypedRuleContext(ASLParser.Payload_arr_declContext, 0)
+
+        def payload_tmpl_decl(self):
+            return self.getTypedRuleContext(ASLParser.Payload_tmpl_declContext, 0)
+
+        def payload_value_lit(self):
+            return self.getTypedRuleContext(ASLParser.Payload_value_litContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_payload_value_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_value_decl"):
+                listener.enterPayload_value_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_value_decl"):
+                listener.exitPayload_value_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_value_decl"):
+                return visitor.visitPayload_value_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def payload_value_decl(self):
+
+        localctx = ASLParser.Payload_value_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 72, self.RULE_payload_value_decl)
+        try:
+            self.state = 413
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 13, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 409
+                self.payload_binding()
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 410
+                self.payload_arr_decl()
+                pass
+
+            elif la_ == 3:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 411
+                self.payload_tmpl_decl()
+                pass
+
+            elif la_ == 4:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 412
+                self.payload_value_lit()
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Payload_value_litContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_payload_value_lit
+
+        def copyFrom(self, ctx: ParserRuleContext):
+            super().copyFrom(ctx)
+
+    class Payload_value_boolContext(Payload_value_litContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_value_litContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def TRUE(self):
+            return self.getToken(ASLParser.TRUE, 0)
+
+        def FALSE(self):
+            return self.getToken(ASLParser.FALSE, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_value_bool"):
+                listener.enterPayload_value_bool(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_value_bool"):
+                listener.exitPayload_value_bool(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_value_bool"):
+                return visitor.visitPayload_value_bool(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_value_intContext(Payload_value_litContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_value_litContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_value_int"):
+                listener.enterPayload_value_int(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_value_int"):
+                listener.exitPayload_value_int(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_value_int"):
+                return visitor.visitPayload_value_int(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_value_strContext(Payload_value_litContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_value_litContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_value_str"):
+                listener.enterPayload_value_str(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_value_str"):
+                listener.exitPayload_value_str(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_value_str"):
+                return visitor.visitPayload_value_str(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_value_floatContext(Payload_value_litContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_value_litContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def NUMBER(self):
+            return self.getToken(ASLParser.NUMBER, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_value_float"):
+                listener.enterPayload_value_float(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_value_float"):
+                listener.exitPayload_value_float(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_value_float"):
+                return visitor.visitPayload_value_float(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Payload_value_nullContext(Payload_value_litContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Payload_value_litContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def NULL(self):
+            return self.getToken(ASLParser.NULL, 0)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterPayload_value_null"):
+                listener.enterPayload_value_null(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitPayload_value_null"):
+                listener.exitPayload_value_null(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitPayload_value_null"):
+                return visitor.visitPayload_value_null(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def payload_value_lit(self):
+
+        localctx = ASLParser.Payload_value_litContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 74, self.RULE_payload_value_lit)
+        self._la = 0  # Token type
+        try:
+            self.state = 420
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [132]:
+                localctx = ASLParser.Payload_value_floatContext(self, localctx)
+                self.enterOuterAlt(localctx, 1)
+                self.state = 415
+                self.match(ASLParser.NUMBER)
+                pass
+            elif token in [131]:
+                localctx = ASLParser.Payload_value_intContext(self, localctx)
+                self.enterOuterAlt(localctx, 2)
+                self.state = 416
+                self.match(ASLParser.INT)
+                pass
+            elif token in [7, 8]:
+                localctx = ASLParser.Payload_value_boolContext(self, localctx)
+                self.enterOuterAlt(localctx, 3)
+                self.state = 417
+                _la = self._input.LA(1)
+                if not (_la == 7 or _la == 8):
+                    self._errHandler.recoverInline(self)
+                else:
+                    self._errHandler.reportMatch(self)
+                    self.consume()
+                pass
+            elif token in [9]:
+                localctx = ASLParser.Payload_value_nullContext(self, localctx)
+                self.enterOuterAlt(localctx, 4)
+                self.state = 418
+                self.match(ASLParser.NULL)
+                pass
+            elif token in [
+                10,
+                11,
+                12,
+                13,
+                15,
+                16,
+                17,
+                18,
+                19,
+                20,
+                21,
+                22,
+                23,
+                24,
+                25,
+                26,
+                27,
+                28,
+                29,
+                30,
+                31,
+                32,
+                33,
+                34,
+                35,
+                36,
+                37,
+                38,
+                39,
+                40,
+                41,
+                42,
+                43,
+                44,
+                45,
+                46,
+                47,
+                48,
+                49,
+                50,
+                51,
+                52,
+                53,
+                54,
+                55,
+                56,
+                57,
+                58,
+                59,
+                60,
+                61,
+                62,
+                63,
+                64,
+                65,
+                66,
+                67,
+                68,
+                69,
+                70,
+                71,
+                72,
+                73,
+                74,
+                75,
+                76,
+                77,
+                78,
+                79,
+                80,
+                81,
+                82,
+                83,
+                84,
+                85,
+                86,
+                87,
+                88,
+                89,
+                90,
+                91,
+                92,
+                93,
+                94,
+                95,
+                96,
+                97,
+                98,
+                99,
+                100,
+                101,
+                102,
+                103,
+                104,
+                105,
+                106,
+                107,
+                108,
+                109,
+                110,
+                111,
+                112,
+                113,
+                114,
+                115,
+                116,
+                117,
+                118,
+                119,
+                120,
+                121,
+                122,
+                123,
+                124,
+                125,
+                126,
+                127,
+                128,
+                129,
+                130,
+            ]:
+                localctx = ASLParser.Payload_value_strContext(self, localctx)
+                self.enterOuterAlt(localctx, 5)
+                self.state = 419
+                self.keyword_or_string()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Result_selector_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def RESULTSELECTOR(self):
+            return self.getToken(ASLParser.RESULTSELECTOR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def payload_tmpl_decl(self):
+            return self.getTypedRuleContext(ASLParser.Payload_tmpl_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_result_selector_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterResult_selector_decl"):
+                listener.enterResult_selector_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitResult_selector_decl"):
+                listener.exitResult_selector_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitResult_selector_decl"):
+                return visitor.visitResult_selector_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def result_selector_decl(self):
+
+        localctx = ASLParser.Result_selector_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 76, self.RULE_result_selector_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 422
+            self.match(ASLParser.RESULTSELECTOR)
+            self.state = 423
+            self.match(ASLParser.COLON)
+            self.state = 424
+            self.payload_tmpl_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class State_typeContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def TASK(self):
+            return self.getToken(ASLParser.TASK, 0)
+
+        def PASS(self):
+            return self.getToken(ASLParser.PASS, 0)
+
+        def CHOICE(self):
+            return self.getToken(ASLParser.CHOICE, 0)
+
+        def FAIL(self):
+            return self.getToken(ASLParser.FAIL, 0)
+
+        def SUCCEED(self):
+            return self.getToken(ASLParser.SUCCEED, 0)
+
+        def WAIT(self):
+            return self.getToken(ASLParser.WAIT, 0)
+
+        def MAP(self):
+            return self.getToken(ASLParser.MAP, 0)
+
+        def PARALLEL(self):
+            return self.getToken(ASLParser.PARALLEL, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_state_type
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterState_type"):
+                listener.enterState_type(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitState_type"):
+                listener.exitState_type(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitState_type"):
+                return visitor.visitState_type(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def state_type(self):
+
+        localctx = ASLParser.State_typeContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 78, self.RULE_state_type)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 426
+            _la = self._input.LA(1)
+            if not ((((_la) & ~0x3F) == 0 and ((1 << _la) & 16711680) != 0)):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Choices_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def CHOICES(self):
+            return self.getToken(ASLParser.CHOICES, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def choice_rule(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Choice_ruleContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Choice_ruleContext, i)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_choices_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterChoices_decl"):
+                listener.enterChoices_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitChoices_decl"):
+                listener.exitChoices_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitChoices_decl"):
+                return visitor.visitChoices_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def choices_decl(self):
+
+        localctx = ASLParser.Choices_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 80, self.RULE_choices_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 428
+            self.match(ASLParser.CHOICES)
+            self.state = 429
+            self.match(ASLParser.COLON)
+            self.state = 430
+            self.match(ASLParser.LBRACK)
+            self.state = 431
+            self.choice_rule()
+            self.state = 436
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 432
+                self.match(ASLParser.COMMA)
+                self.state = 433
+                self.choice_rule()
+                self.state = 438
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 439
+            self.match(ASLParser.RBRACK)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Choice_ruleContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_choice_rule
+
+        def copyFrom(self, ctx: ParserRuleContext):
+            super().copyFrom(ctx)
+
+    class Choice_rule_comparison_variableContext(Choice_ruleContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Choice_ruleContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def comparison_variable_stmt(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(
+                    ASLParser.Comparison_variable_stmtContext
+                )
+            else:
+                return self.getTypedRuleContext(
+                    ASLParser.Comparison_variable_stmtContext, i
+                )
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterChoice_rule_comparison_variable"):
+                listener.enterChoice_rule_comparison_variable(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitChoice_rule_comparison_variable"):
+                listener.exitChoice_rule_comparison_variable(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitChoice_rule_comparison_variable"):
+                return visitor.visitChoice_rule_comparison_variable(self)
+            else:
+                return visitor.visitChildren(self)
+
+    class Choice_rule_comparison_compositeContext(Choice_ruleContext):
+        def __init__(
+            self, parser, ctx: ParserRuleContext
+        ):  # actually a ASLParser.Choice_ruleContext
+            super().__init__(parser)
+            self.copyFrom(ctx)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def comparison_composite_stmt(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(
+                    ASLParser.Comparison_composite_stmtContext
+                )
+            else:
+                return self.getTypedRuleContext(
+                    ASLParser.Comparison_composite_stmtContext, i
+                )
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterChoice_rule_comparison_composite"):
+                listener.enterChoice_rule_comparison_composite(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitChoice_rule_comparison_composite"):
+                listener.exitChoice_rule_comparison_composite(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitChoice_rule_comparison_composite"):
+                return visitor.visitChoice_rule_comparison_composite(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def choice_rule(self):
+
+        localctx = ASLParser.Choice_ruleContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 82, self.RULE_choice_rule)
+        self._la = 0  # Token type
+        try:
+            self.state = 462
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 18, self._ctx)
+            if la_ == 1:
+                localctx = ASLParser.Choice_rule_comparison_variableContext(
+                    self, localctx
+                )
+                self.enterOuterAlt(localctx, 1)
+                self.state = 441
+                self.match(ASLParser.LBRACE)
+                self.state = 442
+                self.comparison_variable_stmt()
+                self.state = 445
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while True:
+                    self.state = 443
+                    self.match(ASLParser.COMMA)
+                    self.state = 444
+                    self.comparison_variable_stmt()
+                    self.state = 447
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+                    if not (_la == 1):
+                        break
+
+                self.state = 449
+                self.match(ASLParser.RBRACE)
+                pass
+
+            elif la_ == 2:
+                localctx = ASLParser.Choice_rule_comparison_compositeContext(
+                    self, localctx
+                )
+                self.enterOuterAlt(localctx, 2)
+                self.state = 451
+                self.match(ASLParser.LBRACE)
+                self.state = 452
+                self.comparison_composite_stmt()
+                self.state = 457
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 453
+                    self.match(ASLParser.COMMA)
+                    self.state = 454
+                    self.comparison_composite_stmt()
+                    self.state = 459
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 460
+                self.match(ASLParser.RBRACE)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Comparison_variable_stmtContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def variable_decl(self):
+            return self.getTypedRuleContext(ASLParser.Variable_declContext, 0)
+
+        def comparison_func(self):
+            return self.getTypedRuleContext(ASLParser.Comparison_funcContext, 0)
+
+        def next_decl(self):
+            return self.getTypedRuleContext(ASLParser.Next_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_comparison_variable_stmt
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterComparison_variable_stmt"):
+                listener.enterComparison_variable_stmt(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitComparison_variable_stmt"):
+                listener.exitComparison_variable_stmt(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitComparison_variable_stmt"):
+                return visitor.visitComparison_variable_stmt(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def comparison_variable_stmt(self):
+
+        localctx = ASLParser.Comparison_variable_stmtContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 84, self.RULE_comparison_variable_stmt)
+        try:
+            self.state = 467
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [25]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 464
+                self.variable_decl()
+                pass
+            elif token in [
+                29,
+                30,
+                31,
+                32,
+                33,
+                34,
+                35,
+                36,
+                38,
+                39,
+                40,
+                41,
+                42,
+                43,
+                44,
+                45,
+                46,
+                47,
+                49,
+                50,
+                51,
+                52,
+                53,
+                54,
+                55,
+                56,
+                57,
+                58,
+                59,
+                60,
+                61,
+                62,
+                63,
+                64,
+                65,
+                66,
+                67,
+                68,
+                69,
+            ]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 465
+                self.comparison_func()
+                pass
+            elif token in [103]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 466
+                self.next_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Comparison_composite_stmtContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def comparison_composite(self):
+            return self.getTypedRuleContext(ASLParser.Comparison_compositeContext, 0)
+
+        def next_decl(self):
+            return self.getTypedRuleContext(ASLParser.Next_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_comparison_composite_stmt
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterComparison_composite_stmt"):
+                listener.enterComparison_composite_stmt(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitComparison_composite_stmt"):
+                listener.exitComparison_composite_stmt(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitComparison_composite_stmt"):
+                return visitor.visitComparison_composite_stmt(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def comparison_composite_stmt(self):
+
+        localctx = ASLParser.Comparison_composite_stmtContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 86, self.RULE_comparison_composite_stmt)
+        try:
+            self.state = 471
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [28, 37, 48]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 469
+                self.comparison_composite()
+                pass
+            elif token in [103]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 470
+                self.next_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Comparison_compositeContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def choice_operator(self):
+            return self.getTypedRuleContext(ASLParser.Choice_operatorContext, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def choice_rule(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Choice_ruleContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Choice_ruleContext, i)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_comparison_composite
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterComparison_composite"):
+                listener.enterComparison_composite(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitComparison_composite"):
+                listener.exitComparison_composite(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitComparison_composite"):
+                return visitor.visitComparison_composite(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def comparison_composite(self):
+
+        localctx = ASLParser.Comparison_compositeContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 88, self.RULE_comparison_composite)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 473
+            self.choice_operator()
+            self.state = 474
+            self.match(ASLParser.COLON)
+            self.state = 487
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [5]:
+                self.state = 475
+                self.choice_rule()
+                pass
+            elif token in [3]:
+                self.state = 476
+                self.match(ASLParser.LBRACK)
+                self.state = 477
+                self.choice_rule()
+                self.state = 482
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 478
+                    self.match(ASLParser.COMMA)
+                    self.state = 479
+                    self.choice_rule()
+                    self.state = 484
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 485
+                self.match(ASLParser.RBRACK)
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Variable_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def VARIABLE(self):
+            return self.getToken(ASLParser.VARIABLE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_variable_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterVariable_decl"):
+                listener.enterVariable_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitVariable_decl"):
+                listener.exitVariable_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitVariable_decl"):
+                return visitor.visitVariable_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def variable_decl(self):
+
+        localctx = ASLParser.Variable_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 90, self.RULE_variable_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 489
+            self.match(ASLParser.VARIABLE)
+            self.state = 490
+            self.match(ASLParser.COLON)
+            self.state = 491
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Comparison_funcContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def comparison_op(self):
+            return self.getTypedRuleContext(ASLParser.Comparison_opContext, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def json_value_decl(self):
+            return self.getTypedRuleContext(ASLParser.Json_value_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_comparison_func
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterComparison_func"):
+                listener.enterComparison_func(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitComparison_func"):
+                listener.exitComparison_func(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitComparison_func"):
+                return visitor.visitComparison_func(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def comparison_func(self):
+
+        localctx = ASLParser.Comparison_funcContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 92, self.RULE_comparison_func)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 493
+            self.comparison_op()
+            self.state = 494
+            self.match(ASLParser.COLON)
+            self.state = 495
+            self.json_value_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Branches_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def BRANCHES(self):
+            return self.getToken(ASLParser.BRANCHES, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def program_decl(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Program_declContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Program_declContext, i)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_branches_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterBranches_decl"):
+                listener.enterBranches_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitBranches_decl"):
+                listener.exitBranches_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitBranches_decl"):
+                return visitor.visitBranches_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def branches_decl(self):
+
+        localctx = ASLParser.Branches_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 94, self.RULE_branches_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 497
+            self.match(ASLParser.BRANCHES)
+            self.state = 498
+            self.match(ASLParser.COLON)
+            self.state = 499
+            self.match(ASLParser.LBRACK)
+            self.state = 500
+            self.program_decl()
+            self.state = 505
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 501
+                self.match(ASLParser.COMMA)
+                self.state = 502
+                self.program_decl()
+                self.state = 507
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 508
+            self.match(ASLParser.RBRACK)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Item_processor_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ITEMPROCESSOR(self):
+            return self.getToken(ASLParser.ITEMPROCESSOR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def item_processor_item(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Item_processor_itemContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Item_processor_itemContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_item_processor_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterItem_processor_decl"):
+                listener.enterItem_processor_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitItem_processor_decl"):
+                listener.exitItem_processor_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitItem_processor_decl"):
+                return visitor.visitItem_processor_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def item_processor_decl(self):
+
+        localctx = ASLParser.Item_processor_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 96, self.RULE_item_processor_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 510
+            self.match(ASLParser.ITEMPROCESSOR)
+            self.state = 511
+            self.match(ASLParser.COLON)
+            self.state = 512
+            self.match(ASLParser.LBRACE)
+            self.state = 513
+            self.item_processor_item()
+            self.state = 518
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 514
+                self.match(ASLParser.COMMA)
+                self.state = 515
+                self.item_processor_item()
+                self.state = 520
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 521
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Item_processor_itemContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def processor_config_decl(self):
+            return self.getTypedRuleContext(ASLParser.Processor_config_declContext, 0)
+
+        def startat_decl(self):
+            return self.getTypedRuleContext(ASLParser.Startat_declContext, 0)
+
+        def states_decl(self):
+            return self.getTypedRuleContext(ASLParser.States_declContext, 0)
+
+        def comment_decl(self):
+            return self.getTypedRuleContext(ASLParser.Comment_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_item_processor_item
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterItem_processor_item"):
+                listener.enterItem_processor_item(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitItem_processor_item"):
+                listener.exitItem_processor_item(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitItem_processor_item"):
+                return visitor.visitItem_processor_item(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def item_processor_item(self):
+
+        localctx = ASLParser.Item_processor_itemContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 98, self.RULE_item_processor_item)
+        try:
+            self.state = 527
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [78]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 523
+                self.processor_config_decl()
+                pass
+            elif token in [12]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 524
+                self.startat_decl()
+                pass
+            elif token in [11]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 525
+                self.states_decl()
+                pass
+            elif token in [10]:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 526
+                self.comment_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Processor_config_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def PROCESSORCONFIG(self):
+            return self.getToken(ASLParser.PROCESSORCONFIG, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def processor_config_field(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(
+                    ASLParser.Processor_config_fieldContext
+                )
+            else:
+                return self.getTypedRuleContext(
+                    ASLParser.Processor_config_fieldContext, i
+                )
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_processor_config_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterProcessor_config_decl"):
+                listener.enterProcessor_config_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitProcessor_config_decl"):
+                listener.exitProcessor_config_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitProcessor_config_decl"):
+                return visitor.visitProcessor_config_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def processor_config_decl(self):
+
+        localctx = ASLParser.Processor_config_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 100, self.RULE_processor_config_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 529
+            self.match(ASLParser.PROCESSORCONFIG)
+            self.state = 530
+            self.match(ASLParser.COLON)
+            self.state = 531
+            self.match(ASLParser.LBRACE)
+            self.state = 532
+            self.processor_config_field()
+            self.state = 537
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 533
+                self.match(ASLParser.COMMA)
+                self.state = 534
+                self.processor_config_field()
+                self.state = 539
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 540
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Processor_config_fieldContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def mode_decl(self):
+            return self.getTypedRuleContext(ASLParser.Mode_declContext, 0)
+
+        def execution_decl(self):
+            return self.getTypedRuleContext(ASLParser.Execution_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_processor_config_field
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterProcessor_config_field"):
+                listener.enterProcessor_config_field(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitProcessor_config_field"):
+                listener.exitProcessor_config_field(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitProcessor_config_field"):
+                return visitor.visitProcessor_config_field(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def processor_config_field(self):
+
+        localctx = ASLParser.Processor_config_fieldContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 102, self.RULE_processor_config_field)
+        try:
+            self.state = 544
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [79]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 542
+                self.mode_decl()
+                pass
+            elif token in [82]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 543
+                self.execution_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Mode_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def MODE(self):
+            return self.getToken(ASLParser.MODE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def mode_type(self):
+            return self.getTypedRuleContext(ASLParser.Mode_typeContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_mode_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterMode_decl"):
+                listener.enterMode_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitMode_decl"):
+                listener.exitMode_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitMode_decl"):
+                return visitor.visitMode_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def mode_decl(self):
+
+        localctx = ASLParser.Mode_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 104, self.RULE_mode_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 546
+            self.match(ASLParser.MODE)
+            self.state = 547
+            self.match(ASLParser.COLON)
+            self.state = 548
+            self.mode_type()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Mode_typeContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def INLINE(self):
+            return self.getToken(ASLParser.INLINE, 0)
+
+        def DISTRIBUTED(self):
+            return self.getToken(ASLParser.DISTRIBUTED, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_mode_type
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterMode_type"):
+                listener.enterMode_type(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitMode_type"):
+                listener.exitMode_type(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitMode_type"):
+                return visitor.visitMode_type(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def mode_type(self):
+
+        localctx = ASLParser.Mode_typeContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 106, self.RULE_mode_type)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 550
+            _la = self._input.LA(1)
+            if not (_la == 80 or _la == 81):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Execution_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def EXECUTIONTYPE(self):
+            return self.getToken(ASLParser.EXECUTIONTYPE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def execution_type(self):
+            return self.getTypedRuleContext(ASLParser.Execution_typeContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_execution_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterExecution_decl"):
+                listener.enterExecution_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitExecution_decl"):
+                listener.exitExecution_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitExecution_decl"):
+                return visitor.visitExecution_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def execution_decl(self):
+
+        localctx = ASLParser.Execution_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 108, self.RULE_execution_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 552
+            self.match(ASLParser.EXECUTIONTYPE)
+            self.state = 553
+            self.match(ASLParser.COLON)
+            self.state = 554
+            self.execution_type()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Execution_typeContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def STANDARD(self):
+            return self.getToken(ASLParser.STANDARD, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_execution_type
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterExecution_type"):
+                listener.enterExecution_type(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitExecution_type"):
+                listener.exitExecution_type(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitExecution_type"):
+                return visitor.visitExecution_type(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def execution_type(self):
+
+        localctx = ASLParser.Execution_typeContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 110, self.RULE_execution_type)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 556
+            self.match(ASLParser.STANDARD)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Iterator_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ITERATOR(self):
+            return self.getToken(ASLParser.ITERATOR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def iterator_decl_item(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Iterator_decl_itemContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Iterator_decl_itemContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_iterator_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterIterator_decl"):
+                listener.enterIterator_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitIterator_decl"):
+                listener.exitIterator_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitIterator_decl"):
+                return visitor.visitIterator_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def iterator_decl(self):
+
+        localctx = ASLParser.Iterator_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 112, self.RULE_iterator_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 558
+            self.match(ASLParser.ITERATOR)
+            self.state = 559
+            self.match(ASLParser.COLON)
+            self.state = 560
+            self.match(ASLParser.LBRACE)
+            self.state = 561
+            self.iterator_decl_item()
+            self.state = 566
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 562
+                self.match(ASLParser.COMMA)
+                self.state = 563
+                self.iterator_decl_item()
+                self.state = 568
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 569
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Iterator_decl_itemContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def startat_decl(self):
+            return self.getTypedRuleContext(ASLParser.Startat_declContext, 0)
+
+        def states_decl(self):
+            return self.getTypedRuleContext(ASLParser.States_declContext, 0)
+
+        def comment_decl(self):
+            return self.getTypedRuleContext(ASLParser.Comment_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_iterator_decl_item
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterIterator_decl_item"):
+                listener.enterIterator_decl_item(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitIterator_decl_item"):
+                listener.exitIterator_decl_item(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitIterator_decl_item"):
+                return visitor.visitIterator_decl_item(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def iterator_decl_item(self):
+
+        localctx = ASLParser.Iterator_decl_itemContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 114, self.RULE_iterator_decl_item)
+        try:
+            self.state = 574
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [12]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 571
+                self.startat_decl()
+                pass
+            elif token in [11]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 572
+                self.states_decl()
+                pass
+            elif token in [10]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 573
+                self.comment_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Item_selector_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ITEMSELECTOR(self):
+            return self.getToken(ASLParser.ITEMSELECTOR, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def payload_tmpl_decl(self):
+            return self.getTypedRuleContext(ASLParser.Payload_tmpl_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_item_selector_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterItem_selector_decl"):
+                listener.enterItem_selector_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitItem_selector_decl"):
+                listener.exitItem_selector_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitItem_selector_decl"):
+                return visitor.visitItem_selector_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def item_selector_decl(self):
+
+        localctx = ASLParser.Item_selector_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 116, self.RULE_item_selector_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 576
+            self.match(ASLParser.ITEMSELECTOR)
+            self.state = 577
+            self.match(ASLParser.COLON)
+            self.state = 578
+            self.payload_tmpl_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Item_reader_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ITEMREADER(self):
+            return self.getToken(ASLParser.ITEMREADER, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def items_reader_field(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Items_reader_fieldContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Items_reader_fieldContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_item_reader_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterItem_reader_decl"):
+                listener.enterItem_reader_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitItem_reader_decl"):
+                listener.exitItem_reader_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitItem_reader_decl"):
+                return visitor.visitItem_reader_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def item_reader_decl(self):
+
+        localctx = ASLParser.Item_reader_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 118, self.RULE_item_reader_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 580
+            self.match(ASLParser.ITEMREADER)
+            self.state = 581
+            self.match(ASLParser.COLON)
+            self.state = 582
+            self.match(ASLParser.LBRACE)
+            self.state = 583
+            self.items_reader_field()
+            self.state = 588
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 584
+                self.match(ASLParser.COMMA)
+                self.state = 585
+                self.items_reader_field()
+                self.state = 590
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 591
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Items_reader_fieldContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def resource_decl(self):
+            return self.getTypedRuleContext(ASLParser.Resource_declContext, 0)
+
+        def parameters_decl(self):
+            return self.getTypedRuleContext(ASLParser.Parameters_declContext, 0)
+
+        def reader_config_decl(self):
+            return self.getTypedRuleContext(ASLParser.Reader_config_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_items_reader_field
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterItems_reader_field"):
+                listener.enterItems_reader_field(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitItems_reader_field"):
+                listener.exitItems_reader_field(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitItems_reader_field"):
+                return visitor.visitItems_reader_field(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def items_reader_field(self):
+
+        localctx = ASLParser.Items_reader_fieldContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 120, self.RULE_items_reader_field)
+        try:
+            self.state = 596
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [88]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 593
+                self.resource_decl()
+                pass
+            elif token in [94]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 594
+                self.parameters_decl()
+                pass
+            elif token in [97]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 595
+                self.reader_config_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Reader_config_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def READERCONFIG(self):
+            return self.getToken(ASLParser.READERCONFIG, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def reader_config_field(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Reader_config_fieldContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Reader_config_fieldContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_reader_config_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterReader_config_decl"):
+                listener.enterReader_config_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitReader_config_decl"):
+                listener.exitReader_config_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitReader_config_decl"):
+                return visitor.visitReader_config_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def reader_config_decl(self):
+
+        localctx = ASLParser.Reader_config_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 122, self.RULE_reader_config_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 598
+            self.match(ASLParser.READERCONFIG)
+            self.state = 599
+            self.match(ASLParser.COLON)
+            self.state = 600
+            self.match(ASLParser.LBRACE)
+            self.state = 601
+            self.reader_config_field()
+            self.state = 606
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 602
+                self.match(ASLParser.COMMA)
+                self.state = 603
+                self.reader_config_field()
+                self.state = 608
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 609
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Reader_config_fieldContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def input_type_decl(self):
+            return self.getTypedRuleContext(ASLParser.Input_type_declContext, 0)
+
+        def csv_header_location_decl(self):
+            return self.getTypedRuleContext(
+                ASLParser.Csv_header_location_declContext, 0
+            )
+
+        def csv_headers_decl(self):
+            return self.getTypedRuleContext(ASLParser.Csv_headers_declContext, 0)
+
+        def max_items_decl(self):
+            return self.getTypedRuleContext(ASLParser.Max_items_declContext, 0)
+
+        def max_items_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Max_items_path_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_reader_config_field
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterReader_config_field"):
+                listener.enterReader_config_field(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitReader_config_field"):
+                listener.exitReader_config_field(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitReader_config_field"):
+                return visitor.visitReader_config_field(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def reader_config_field(self):
+
+        localctx = ASLParser.Reader_config_fieldContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 124, self.RULE_reader_config_field)
+        try:
+            self.state = 616
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [98]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 611
+                self.input_type_decl()
+                pass
+            elif token in [99]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 612
+                self.csv_header_location_decl()
+                pass
+            elif token in [100]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 613
+                self.csv_headers_decl()
+                pass
+            elif token in [101]:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 614
+                self.max_items_decl()
+                pass
+            elif token in [102]:
+                self.enterOuterAlt(localctx, 5)
+                self.state = 615
+                self.max_items_path_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Input_type_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def INPUTTYPE(self):
+            return self.getToken(ASLParser.INPUTTYPE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_input_type_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterInput_type_decl"):
+                listener.enterInput_type_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitInput_type_decl"):
+                listener.exitInput_type_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitInput_type_decl"):
+                return visitor.visitInput_type_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def input_type_decl(self):
+
+        localctx = ASLParser.Input_type_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 126, self.RULE_input_type_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 618
+            self.match(ASLParser.INPUTTYPE)
+            self.state = 619
+            self.match(ASLParser.COLON)
+            self.state = 620
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Csv_header_location_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def CSVHEADERLOCATION(self):
+            return self.getToken(ASLParser.CSVHEADERLOCATION, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_csv_header_location_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterCsv_header_location_decl"):
+                listener.enterCsv_header_location_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitCsv_header_location_decl"):
+                listener.exitCsv_header_location_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitCsv_header_location_decl"):
+                return visitor.visitCsv_header_location_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def csv_header_location_decl(self):
+
+        localctx = ASLParser.Csv_header_location_declContext(
+            self, self._ctx, self.state
+        )
+        self.enterRule(localctx, 128, self.RULE_csv_header_location_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 622
+            self.match(ASLParser.CSVHEADERLOCATION)
+            self.state = 623
+            self.match(ASLParser.COLON)
+            self.state = 624
+            self.keyword_or_string()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Csv_headers_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def CSVHEADERS(self):
+            return self.getToken(ASLParser.CSVHEADERS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def keyword_or_string(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Keyword_or_stringContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, i)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_csv_headers_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterCsv_headers_decl"):
+                listener.enterCsv_headers_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitCsv_headers_decl"):
+                listener.exitCsv_headers_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitCsv_headers_decl"):
+                return visitor.visitCsv_headers_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def csv_headers_decl(self):
+
+        localctx = ASLParser.Csv_headers_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 130, self.RULE_csv_headers_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 626
+            self.match(ASLParser.CSVHEADERS)
+            self.state = 627
+            self.match(ASLParser.COLON)
+            self.state = 628
+            self.match(ASLParser.LBRACK)
+            self.state = 629
+            self.keyword_or_string()
+            self.state = 634
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 630
+                self.match(ASLParser.COMMA)
+                self.state = 631
+                self.keyword_or_string()
+                self.state = 636
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 637
+            self.match(ASLParser.RBRACK)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Max_items_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def MAXITEMS(self):
+            return self.getToken(ASLParser.MAXITEMS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_max_items_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterMax_items_decl"):
+                listener.enterMax_items_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitMax_items_decl"):
+                listener.exitMax_items_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitMax_items_decl"):
+                return visitor.visitMax_items_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def max_items_decl(self):
+
+        localctx = ASLParser.Max_items_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 132, self.RULE_max_items_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 639
+            self.match(ASLParser.MAXITEMS)
+            self.state = 640
+            self.match(ASLParser.COLON)
+            self.state = 641
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Max_items_path_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def MAXITEMSPATH(self):
+            return self.getToken(ASLParser.MAXITEMSPATH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def STRINGPATH(self):
+            return self.getToken(ASLParser.STRINGPATH, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_max_items_path_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterMax_items_path_decl"):
+                listener.enterMax_items_path_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitMax_items_path_decl"):
+                listener.exitMax_items_path_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitMax_items_path_decl"):
+                return visitor.visitMax_items_path_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def max_items_path_decl(self):
+
+        localctx = ASLParser.Max_items_path_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 134, self.RULE_max_items_path_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 643
+            self.match(ASLParser.MAXITEMSPATH)
+            self.state = 644
+            self.match(ASLParser.COLON)
+            self.state = 645
+            self.match(ASLParser.STRINGPATH)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Retry_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def RETRY(self):
+            return self.getToken(ASLParser.RETRY, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def retrier_decl(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Retrier_declContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Retrier_declContext, i)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_retry_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterRetry_decl"):
+                listener.enterRetry_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitRetry_decl"):
+                listener.exitRetry_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitRetry_decl"):
+                return visitor.visitRetry_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def retry_decl(self):
+
+        localctx = ASLParser.Retry_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 136, self.RULE_retry_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 647
+            self.match(ASLParser.RETRY)
+            self.state = 648
+            self.match(ASLParser.COLON)
+            self.state = 649
+            self.match(ASLParser.LBRACK)
+            self.state = 658
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            if _la == 5:
+                self.state = 650
+                self.retrier_decl()
+                self.state = 655
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 651
+                    self.match(ASLParser.COMMA)
+                    self.state = 652
+                    self.retrier_decl()
+                    self.state = 657
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+            self.state = 660
+            self.match(ASLParser.RBRACK)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Retrier_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def retrier_stmt(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Retrier_stmtContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Retrier_stmtContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_retrier_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterRetrier_decl"):
+                listener.enterRetrier_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitRetrier_decl"):
+                listener.exitRetrier_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitRetrier_decl"):
+                return visitor.visitRetrier_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def retrier_decl(self):
+
+        localctx = ASLParser.Retrier_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 138, self.RULE_retrier_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 662
+            self.match(ASLParser.LBRACE)
+            self.state = 663
+            self.retrier_stmt()
+            self.state = 668
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 664
+                self.match(ASLParser.COMMA)
+                self.state = 665
+                self.retrier_stmt()
+                self.state = 670
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 671
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Retrier_stmtContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def error_equals_decl(self):
+            return self.getTypedRuleContext(ASLParser.Error_equals_declContext, 0)
+
+        def interval_seconds_decl(self):
+            return self.getTypedRuleContext(ASLParser.Interval_seconds_declContext, 0)
+
+        def max_attempts_decl(self):
+            return self.getTypedRuleContext(ASLParser.Max_attempts_declContext, 0)
+
+        def backoff_rate_decl(self):
+            return self.getTypedRuleContext(ASLParser.Backoff_rate_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_retrier_stmt
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterRetrier_stmt"):
+                listener.enterRetrier_stmt(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitRetrier_stmt"):
+                listener.exitRetrier_stmt(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitRetrier_stmt"):
+                return visitor.visitRetrier_stmt(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def retrier_stmt(self):
+
+        localctx = ASLParser.Retrier_stmtContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 140, self.RULE_retrier_stmt)
+        try:
+            self.state = 677
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [108]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 673
+                self.error_equals_decl()
+                pass
+            elif token in [109]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 674
+                self.interval_seconds_decl()
+                pass
+            elif token in [110]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 675
+                self.max_attempts_decl()
+                pass
+            elif token in [111]:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 676
+                self.backoff_rate_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Error_equals_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ERROREQUALS(self):
+            return self.getToken(ASLParser.ERROREQUALS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def error_name(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Error_nameContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Error_nameContext, i)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_error_equals_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterError_equals_decl"):
+                listener.enterError_equals_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitError_equals_decl"):
+                listener.exitError_equals_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitError_equals_decl"):
+                return visitor.visitError_equals_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def error_equals_decl(self):
+
+        localctx = ASLParser.Error_equals_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 142, self.RULE_error_equals_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 679
+            self.match(ASLParser.ERROREQUALS)
+            self.state = 680
+            self.match(ASLParser.COLON)
+            self.state = 681
+            self.match(ASLParser.LBRACK)
+            self.state = 682
+            self.error_name()
+            self.state = 687
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 683
+                self.match(ASLParser.COMMA)
+                self.state = 684
+                self.error_name()
+                self.state = 689
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 690
+            self.match(ASLParser.RBRACK)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Interval_seconds_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def INTERVALSECONDS(self):
+            return self.getToken(ASLParser.INTERVALSECONDS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_interval_seconds_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterInterval_seconds_decl"):
+                listener.enterInterval_seconds_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitInterval_seconds_decl"):
+                listener.exitInterval_seconds_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitInterval_seconds_decl"):
+                return visitor.visitInterval_seconds_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def interval_seconds_decl(self):
+
+        localctx = ASLParser.Interval_seconds_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 144, self.RULE_interval_seconds_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 692
+            self.match(ASLParser.INTERVALSECONDS)
+            self.state = 693
+            self.match(ASLParser.COLON)
+            self.state = 694
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Max_attempts_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def MAXATTEMPTS(self):
+            return self.getToken(ASLParser.MAXATTEMPTS, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_max_attempts_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterMax_attempts_decl"):
+                listener.enterMax_attempts_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitMax_attempts_decl"):
+                listener.exitMax_attempts_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitMax_attempts_decl"):
+                return visitor.visitMax_attempts_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def max_attempts_decl(self):
+
+        localctx = ASLParser.Max_attempts_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 146, self.RULE_max_attempts_decl)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 696
+            self.match(ASLParser.MAXATTEMPTS)
+            self.state = 697
+            self.match(ASLParser.COLON)
+            self.state = 698
+            self.match(ASLParser.INT)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Backoff_rate_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def BACKOFFRATE(self):
+            return self.getToken(ASLParser.BACKOFFRATE, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def NUMBER(self):
+            return self.getToken(ASLParser.NUMBER, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_backoff_rate_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterBackoff_rate_decl"):
+                listener.enterBackoff_rate_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitBackoff_rate_decl"):
+                listener.exitBackoff_rate_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitBackoff_rate_decl"):
+                return visitor.visitBackoff_rate_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def backoff_rate_decl(self):
+
+        localctx = ASLParser.Backoff_rate_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 148, self.RULE_backoff_rate_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 700
+            self.match(ASLParser.BACKOFFRATE)
+            self.state = 701
+            self.match(ASLParser.COLON)
+            self.state = 702
+            _la = self._input.LA(1)
+            if not (_la == 131 or _la == 132):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Catch_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def CATCH(self):
+            return self.getToken(ASLParser.CATCH, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def catcher_decl(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Catcher_declContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Catcher_declContext, i)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_catch_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterCatch_decl"):
+                listener.enterCatch_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitCatch_decl"):
+                listener.exitCatch_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitCatch_decl"):
+                return visitor.visitCatch_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def catch_decl(self):
+
+        localctx = ASLParser.Catch_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 150, self.RULE_catch_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 704
+            self.match(ASLParser.CATCH)
+            self.state = 705
+            self.match(ASLParser.COLON)
+            self.state = 706
+            self.match(ASLParser.LBRACK)
+            self.state = 715
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            if _la == 5:
+                self.state = 707
+                self.catcher_decl()
+                self.state = 712
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 708
+                    self.match(ASLParser.COMMA)
+                    self.state = 709
+                    self.catcher_decl()
+                    self.state = 714
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+            self.state = 717
+            self.match(ASLParser.RBRACK)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Catcher_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def catcher_stmt(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Catcher_stmtContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Catcher_stmtContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_catcher_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterCatcher_decl"):
+                listener.enterCatcher_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitCatcher_decl"):
+                listener.exitCatcher_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitCatcher_decl"):
+                return visitor.visitCatcher_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def catcher_decl(self):
+
+        localctx = ASLParser.Catcher_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 152, self.RULE_catcher_decl)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 719
+            self.match(ASLParser.LBRACE)
+            self.state = 720
+            self.catcher_stmt()
+            self.state = 725
+            self._errHandler.sync(self)
+            _la = self._input.LA(1)
+            while _la == 1:
+                self.state = 721
+                self.match(ASLParser.COMMA)
+                self.state = 722
+                self.catcher_stmt()
+                self.state = 727
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+
+            self.state = 728
+            self.match(ASLParser.RBRACE)
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Catcher_stmtContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def error_equals_decl(self):
+            return self.getTypedRuleContext(ASLParser.Error_equals_declContext, 0)
+
+        def result_path_decl(self):
+            return self.getTypedRuleContext(ASLParser.Result_path_declContext, 0)
+
+        def next_decl(self):
+            return self.getTypedRuleContext(ASLParser.Next_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_catcher_stmt
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterCatcher_stmt"):
+                listener.enterCatcher_stmt(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitCatcher_stmt"):
+                listener.exitCatcher_stmt(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitCatcher_stmt"):
+                return visitor.visitCatcher_stmt(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def catcher_stmt(self):
+
+        localctx = ASLParser.Catcher_stmtContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 154, self.RULE_catcher_stmt)
+        try:
+            self.state = 733
+            self._errHandler.sync(self)
+            token = self._input.LA(1)
+            if token in [108]:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 730
+                self.error_equals_decl()
+                pass
+            elif token in [92]:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 731
+                self.result_path_decl()
+                pass
+            elif token in [103]:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 732
+                self.next_decl()
+                pass
+            else:
+                raise NoViableAltException(self)
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Comparison_opContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def BOOLEANEQUALS(self):
+            return self.getToken(ASLParser.BOOLEANEQUALS, 0)
+
+        def BOOLEANQUALSPATH(self):
+            return self.getToken(ASLParser.BOOLEANQUALSPATH, 0)
+
+        def ISBOOLEAN(self):
+            return self.getToken(ASLParser.ISBOOLEAN, 0)
+
+        def ISNULL(self):
+            return self.getToken(ASLParser.ISNULL, 0)
+
+        def ISNUMERIC(self):
+            return self.getToken(ASLParser.ISNUMERIC, 0)
+
+        def ISPRESENT(self):
+            return self.getToken(ASLParser.ISPRESENT, 0)
+
+        def ISSTRING(self):
+            return self.getToken(ASLParser.ISSTRING, 0)
+
+        def ISTIMESTAMP(self):
+            return self.getToken(ASLParser.ISTIMESTAMP, 0)
+
+        def NUMERICEQUALS(self):
+            return self.getToken(ASLParser.NUMERICEQUALS, 0)
+
+        def NUMERICEQUALSPATH(self):
+            return self.getToken(ASLParser.NUMERICEQUALSPATH, 0)
+
+        def NUMERICGREATERTHAN(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHAN, 0)
+
+        def NUMERICGREATERTHANPATH(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHANPATH, 0)
+
+        def NUMERICGREATERTHANEQUALS(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHANEQUALS, 0)
+
+        def NUMERICGREATERTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHANEQUALSPATH, 0)
+
+        def NUMERICLESSTHAN(self):
+            return self.getToken(ASLParser.NUMERICLESSTHAN, 0)
+
+        def NUMERICLESSTHANPATH(self):
+            return self.getToken(ASLParser.NUMERICLESSTHANPATH, 0)
+
+        def NUMERICLESSTHANEQUALS(self):
+            return self.getToken(ASLParser.NUMERICLESSTHANEQUALS, 0)
+
+        def NUMERICLESSTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.NUMERICLESSTHANEQUALSPATH, 0)
+
+        def STRINGEQUALS(self):
+            return self.getToken(ASLParser.STRINGEQUALS, 0)
+
+        def STRINGEQUALSPATH(self):
+            return self.getToken(ASLParser.STRINGEQUALSPATH, 0)
+
+        def STRINGGREATERTHAN(self):
+            return self.getToken(ASLParser.STRINGGREATERTHAN, 0)
+
+        def STRINGGREATERTHANPATH(self):
+            return self.getToken(ASLParser.STRINGGREATERTHANPATH, 0)
+
+        def STRINGGREATERTHANEQUALS(self):
+            return self.getToken(ASLParser.STRINGGREATERTHANEQUALS, 0)
+
+        def STRINGGREATERTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.STRINGGREATERTHANEQUALSPATH, 0)
+
+        def STRINGLESSTHAN(self):
+            return self.getToken(ASLParser.STRINGLESSTHAN, 0)
+
+        def STRINGLESSTHANPATH(self):
+            return self.getToken(ASLParser.STRINGLESSTHANPATH, 0)
+
+        def STRINGLESSTHANEQUALS(self):
+            return self.getToken(ASLParser.STRINGLESSTHANEQUALS, 0)
+
+        def STRINGLESSTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.STRINGLESSTHANEQUALSPATH, 0)
+
+        def STRINGMATCHES(self):
+            return self.getToken(ASLParser.STRINGMATCHES, 0)
+
+        def TIMESTAMPEQUALS(self):
+            return self.getToken(ASLParser.TIMESTAMPEQUALS, 0)
+
+        def TIMESTAMPEQUALSPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPEQUALSPATH, 0)
+
+        def TIMESTAMPGREATERTHAN(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHAN, 0)
+
+        def TIMESTAMPGREATERTHANPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHANPATH, 0)
+
+        def TIMESTAMPGREATERTHANEQUALS(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHANEQUALS, 0)
+
+        def TIMESTAMPGREATERTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHANEQUALSPATH, 0)
+
+        def TIMESTAMPLESSTHAN(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHAN, 0)
+
+        def TIMESTAMPLESSTHANPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHANPATH, 0)
+
+        def TIMESTAMPLESSTHANEQUALS(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHANEQUALS, 0)
+
+        def TIMESTAMPLESSTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHANEQUALSPATH, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_comparison_op
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterComparison_op"):
+                listener.enterComparison_op(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitComparison_op"):
+                listener.exitComparison_op(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitComparison_op"):
+                return visitor.visitComparison_op(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def comparison_op(self):
+
+        localctx = ASLParser.Comparison_opContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 156, self.RULE_comparison_op)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 735
+            _la = self._input.LA(1)
+            if not (
+                (
+                    (((_la - 29)) & ~0x3F) == 0
+                    and ((1 << (_la - 29)) & 2199022731007) != 0
+                )
+            ):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Choice_operatorContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def NOT(self):
+            return self.getToken(ASLParser.NOT, 0)
+
+        def AND(self):
+            return self.getToken(ASLParser.AND, 0)
+
+        def OR(self):
+            return self.getToken(ASLParser.OR, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_choice_operator
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterChoice_operator"):
+                listener.enterChoice_operator(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitChoice_operator"):
+                listener.exitChoice_operator(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitChoice_operator"):
+                return visitor.visitChoice_operator(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def choice_operator(self):
+
+        localctx = ASLParser.Choice_operatorContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 158, self.RULE_choice_operator)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 737
+            _la = self._input.LA(1)
+            if not ((((_la) & ~0x3F) == 0 and ((1 << _la) & 281612684099584) != 0)):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class States_error_nameContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def ERRORNAMEStatesALL(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesALL, 0)
+
+        def ERRORNAMEStatesHeartbeatTimeout(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesHeartbeatTimeout, 0)
+
+        def ERRORNAMEStatesTimeout(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesTimeout, 0)
+
+        def ERRORNAMEStatesTaskFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesTaskFailed, 0)
+
+        def ERRORNAMEStatesPermissions(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesPermissions, 0)
+
+        def ERRORNAMEStatesResultPathMatchFailure(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesResultPathMatchFailure, 0)
+
+        def ERRORNAMEStatesParameterPathFailure(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesParameterPathFailure, 0)
+
+        def ERRORNAMEStatesBranchFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesBranchFailed, 0)
+
+        def ERRORNAMEStatesNoChoiceMatched(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesNoChoiceMatched, 0)
+
+        def ERRORNAMEStatesIntrinsicFailure(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesIntrinsicFailure, 0)
+
+        def ERRORNAMEStatesExceedToleratedFailureThreshold(self):
+            return self.getToken(
+                ASLParser.ERRORNAMEStatesExceedToleratedFailureThreshold, 0
+            )
+
+        def ERRORNAMEStatesItemReaderFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesItemReaderFailed, 0)
+
+        def ERRORNAMEStatesResultWriterFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesResultWriterFailed, 0)
+
+        def ERRORNAMEStatesRuntime(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesRuntime, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_states_error_name
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterStates_error_name"):
+                listener.enterStates_error_name(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitStates_error_name"):
+                listener.exitStates_error_name(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitStates_error_name"):
+                return visitor.visitStates_error_name(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def states_error_name(self):
+
+        localctx = ASLParser.States_error_nameContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 160, self.RULE_states_error_name)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 739
+            _la = self._input.LA(1)
+            if not (
+                ((((_la - 113)) & ~0x3F) == 0 and ((1 << (_la - 113)) & 16383) != 0)
+            ):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Error_nameContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def states_error_name(self):
+            return self.getTypedRuleContext(ASLParser.States_error_nameContext, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_error_name
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterError_name"):
+                listener.enterError_name(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitError_name"):
+                listener.exitError_name(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitError_name"):
+                return visitor.visitError_name(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def error_name(self):
+
+        localctx = ASLParser.Error_nameContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 162, self.RULE_error_name)
+        try:
+            self.state = 743
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 44, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 741
+                self.states_error_name()
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 742
+                self.keyword_or_string()
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_obj_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACE(self):
+            return self.getToken(ASLParser.LBRACE, 0)
+
+        def json_binding(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Json_bindingContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Json_bindingContext, i)
+
+        def RBRACE(self):
+            return self.getToken(ASLParser.RBRACE, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_json_obj_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_obj_decl"):
+                listener.enterJson_obj_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_obj_decl"):
+                listener.exitJson_obj_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_obj_decl"):
+                return visitor.visitJson_obj_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_obj_decl(self):
+
+        localctx = ASLParser.Json_obj_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 164, self.RULE_json_obj_decl)
+        self._la = 0  # Token type
+        try:
+            self.state = 758
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 46, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 745
+                self.match(ASLParser.LBRACE)
+                self.state = 746
+                self.json_binding()
+                self.state = 751
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 747
+                    self.match(ASLParser.COMMA)
+                    self.state = 748
+                    self.json_binding()
+                    self.state = 753
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 754
+                self.match(ASLParser.RBRACE)
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 756
+                self.match(ASLParser.LBRACE)
+                self.state = 757
+                self.match(ASLParser.RBRACE)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_bindingContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def COLON(self):
+            return self.getToken(ASLParser.COLON, 0)
+
+        def json_value_decl(self):
+            return self.getTypedRuleContext(ASLParser.Json_value_declContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_json_binding
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_binding"):
+                listener.enterJson_binding(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_binding"):
+                listener.exitJson_binding(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_binding"):
+                return visitor.visitJson_binding(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_binding(self):
+
+        localctx = ASLParser.Json_bindingContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 166, self.RULE_json_binding)
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 760
+            self.keyword_or_string()
+            self.state = 761
+            self.match(ASLParser.COLON)
+            self.state = 762
+            self.json_value_decl()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_arr_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def LBRACK(self):
+            return self.getToken(ASLParser.LBRACK, 0)
+
+        def json_value_decl(self, i: int = None):
+            if i is None:
+                return self.getTypedRuleContexts(ASLParser.Json_value_declContext)
+            else:
+                return self.getTypedRuleContext(ASLParser.Json_value_declContext, i)
+
+        def RBRACK(self):
+            return self.getToken(ASLParser.RBRACK, 0)
+
+        def COMMA(self, i: int = None):
+            if i is None:
+                return self.getTokens(ASLParser.COMMA)
+            else:
+                return self.getToken(ASLParser.COMMA, i)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_json_arr_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_arr_decl"):
+                listener.enterJson_arr_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_arr_decl"):
+                listener.exitJson_arr_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_arr_decl"):
+                return visitor.visitJson_arr_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_arr_decl(self):
+
+        localctx = ASLParser.Json_arr_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 168, self.RULE_json_arr_decl)
+        self._la = 0  # Token type
+        try:
+            self.state = 777
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 48, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 764
+                self.match(ASLParser.LBRACK)
+                self.state = 765
+                self.json_value_decl()
+                self.state = 770
+                self._errHandler.sync(self)
+                _la = self._input.LA(1)
+                while _la == 1:
+                    self.state = 766
+                    self.match(ASLParser.COMMA)
+                    self.state = 767
+                    self.json_value_decl()
+                    self.state = 772
+                    self._errHandler.sync(self)
+                    _la = self._input.LA(1)
+
+                self.state = 773
+                self.match(ASLParser.RBRACK)
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 775
+                self.match(ASLParser.LBRACK)
+                self.state = 776
+                self.match(ASLParser.RBRACK)
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Json_value_declContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def NUMBER(self):
+            return self.getToken(ASLParser.NUMBER, 0)
+
+        def INT(self):
+            return self.getToken(ASLParser.INT, 0)
+
+        def TRUE(self):
+            return self.getToken(ASLParser.TRUE, 0)
+
+        def FALSE(self):
+            return self.getToken(ASLParser.FALSE, 0)
+
+        def NULL(self):
+            return self.getToken(ASLParser.NULL, 0)
+
+        def json_binding(self):
+            return self.getTypedRuleContext(ASLParser.Json_bindingContext, 0)
+
+        def json_arr_decl(self):
+            return self.getTypedRuleContext(ASLParser.Json_arr_declContext, 0)
+
+        def json_obj_decl(self):
+            return self.getTypedRuleContext(ASLParser.Json_obj_declContext, 0)
+
+        def keyword_or_string(self):
+            return self.getTypedRuleContext(ASLParser.Keyword_or_stringContext, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_json_value_decl
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterJson_value_decl"):
+                listener.enterJson_value_decl(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitJson_value_decl"):
+                listener.exitJson_value_decl(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitJson_value_decl"):
+                return visitor.visitJson_value_decl(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def json_value_decl(self):
+
+        localctx = ASLParser.Json_value_declContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 170, self.RULE_json_value_decl)
+        try:
+            self.state = 788
+            self._errHandler.sync(self)
+            la_ = self._interp.adaptivePredict(self._input, 49, self._ctx)
+            if la_ == 1:
+                self.enterOuterAlt(localctx, 1)
+                self.state = 779
+                self.match(ASLParser.NUMBER)
+                pass
+
+            elif la_ == 2:
+                self.enterOuterAlt(localctx, 2)
+                self.state = 780
+                self.match(ASLParser.INT)
+                pass
+
+            elif la_ == 3:
+                self.enterOuterAlt(localctx, 3)
+                self.state = 781
+                self.match(ASLParser.TRUE)
+                pass
+
+            elif la_ == 4:
+                self.enterOuterAlt(localctx, 4)
+                self.state = 782
+                self.match(ASLParser.FALSE)
+                pass
+
+            elif la_ == 5:
+                self.enterOuterAlt(localctx, 5)
+                self.state = 783
+                self.match(ASLParser.NULL)
+                pass
+
+            elif la_ == 6:
+                self.enterOuterAlt(localctx, 6)
+                self.state = 784
+                self.json_binding()
+                pass
+
+            elif la_ == 7:
+                self.enterOuterAlt(localctx, 7)
+                self.state = 785
+                self.json_arr_decl()
+                pass
+
+            elif la_ == 8:
+                self.enterOuterAlt(localctx, 8)
+                self.state = 786
+                self.json_obj_decl()
+                pass
+
+            elif la_ == 9:
+                self.enterOuterAlt(localctx, 9)
+                self.state = 787
+                self.keyword_or_string()
+                pass
+
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
+
+    class Keyword_or_stringContext(ParserRuleContext):
+        __slots__ = "parser"
+
+        def __init__(
+            self, parser, parent: ParserRuleContext = None, invokingState: int = -1
+        ):
+            super().__init__(parent, invokingState)
+            self.parser = parser
+
+        def STRINGDOLLAR(self):
+            return self.getToken(ASLParser.STRINGDOLLAR, 0)
+
+        def STRINGPATHCONTEXTOBJ(self):
+            return self.getToken(ASLParser.STRINGPATHCONTEXTOBJ, 0)
+
+        def STRINGPATH(self):
+            return self.getToken(ASLParser.STRINGPATH, 0)
+
+        def STRING(self):
+            return self.getToken(ASLParser.STRING, 0)
+
+        def COMMENT(self):
+            return self.getToken(ASLParser.COMMENT, 0)
+
+        def STATES(self):
+            return self.getToken(ASLParser.STATES, 0)
+
+        def STARTAT(self):
+            return self.getToken(ASLParser.STARTAT, 0)
+
+        def NEXTSTATE(self):
+            return self.getToken(ASLParser.NEXTSTATE, 0)
+
+        def TYPE(self):
+            return self.getToken(ASLParser.TYPE, 0)
+
+        def TASK(self):
+            return self.getToken(ASLParser.TASK, 0)
+
+        def CHOICE(self):
+            return self.getToken(ASLParser.CHOICE, 0)
+
+        def FAIL(self):
+            return self.getToken(ASLParser.FAIL, 0)
+
+        def SUCCEED(self):
+            return self.getToken(ASLParser.SUCCEED, 0)
+
+        def PASS(self):
+            return self.getToken(ASLParser.PASS, 0)
+
+        def WAIT(self):
+            return self.getToken(ASLParser.WAIT, 0)
+
+        def PARALLEL(self):
+            return self.getToken(ASLParser.PARALLEL, 0)
+
+        def MAP(self):
+            return self.getToken(ASLParser.MAP, 0)
+
+        def CHOICES(self):
+            return self.getToken(ASLParser.CHOICES, 0)
+
+        def VARIABLE(self):
+            return self.getToken(ASLParser.VARIABLE, 0)
+
+        def DEFAULT(self):
+            return self.getToken(ASLParser.DEFAULT, 0)
+
+        def BRANCHES(self):
+            return self.getToken(ASLParser.BRANCHES, 0)
+
+        def AND(self):
+            return self.getToken(ASLParser.AND, 0)
+
+        def BOOLEANEQUALS(self):
+            return self.getToken(ASLParser.BOOLEANEQUALS, 0)
+
+        def BOOLEANQUALSPATH(self):
+            return self.getToken(ASLParser.BOOLEANQUALSPATH, 0)
+
+        def ISBOOLEAN(self):
+            return self.getToken(ASLParser.ISBOOLEAN, 0)
+
+        def ISNULL(self):
+            return self.getToken(ASLParser.ISNULL, 0)
+
+        def ISNUMERIC(self):
+            return self.getToken(ASLParser.ISNUMERIC, 0)
+
+        def ISPRESENT(self):
+            return self.getToken(ASLParser.ISPRESENT, 0)
+
+        def ISSTRING(self):
+            return self.getToken(ASLParser.ISSTRING, 0)
+
+        def ISTIMESTAMP(self):
+            return self.getToken(ASLParser.ISTIMESTAMP, 0)
+
+        def NOT(self):
+            return self.getToken(ASLParser.NOT, 0)
+
+        def NUMERICEQUALS(self):
+            return self.getToken(ASLParser.NUMERICEQUALS, 0)
+
+        def NUMERICEQUALSPATH(self):
+            return self.getToken(ASLParser.NUMERICEQUALSPATH, 0)
+
+        def NUMERICGREATERTHAN(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHAN, 0)
+
+        def NUMERICGREATERTHANPATH(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHANPATH, 0)
+
+        def NUMERICGREATERTHANEQUALS(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHANEQUALS, 0)
+
+        def NUMERICGREATERTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.NUMERICGREATERTHANEQUALSPATH, 0)
+
+        def NUMERICLESSTHAN(self):
+            return self.getToken(ASLParser.NUMERICLESSTHAN, 0)
+
+        def NUMERICLESSTHANPATH(self):
+            return self.getToken(ASLParser.NUMERICLESSTHANPATH, 0)
+
+        def NUMERICLESSTHANEQUALS(self):
+            return self.getToken(ASLParser.NUMERICLESSTHANEQUALS, 0)
+
+        def NUMERICLESSTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.NUMERICLESSTHANEQUALSPATH, 0)
+
+        def OR(self):
+            return self.getToken(ASLParser.OR, 0)
+
+        def STRINGEQUALS(self):
+            return self.getToken(ASLParser.STRINGEQUALS, 0)
+
+        def STRINGEQUALSPATH(self):
+            return self.getToken(ASLParser.STRINGEQUALSPATH, 0)
+
+        def STRINGGREATERTHAN(self):
+            return self.getToken(ASLParser.STRINGGREATERTHAN, 0)
+
+        def STRINGGREATERTHANPATH(self):
+            return self.getToken(ASLParser.STRINGGREATERTHANPATH, 0)
+
+        def STRINGGREATERTHANEQUALS(self):
+            return self.getToken(ASLParser.STRINGGREATERTHANEQUALS, 0)
+
+        def STRINGGREATERTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.STRINGGREATERTHANEQUALSPATH, 0)
+
+        def STRINGLESSTHAN(self):
+            return self.getToken(ASLParser.STRINGLESSTHAN, 0)
+
+        def STRINGLESSTHANPATH(self):
+            return self.getToken(ASLParser.STRINGLESSTHANPATH, 0)
+
+        def STRINGLESSTHANEQUALS(self):
+            return self.getToken(ASLParser.STRINGLESSTHANEQUALS, 0)
+
+        def STRINGLESSTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.STRINGLESSTHANEQUALSPATH, 0)
+
+        def STRINGMATCHES(self):
+            return self.getToken(ASLParser.STRINGMATCHES, 0)
+
+        def TIMESTAMPEQUALS(self):
+            return self.getToken(ASLParser.TIMESTAMPEQUALS, 0)
+
+        def TIMESTAMPEQUALSPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPEQUALSPATH, 0)
+
+        def TIMESTAMPGREATERTHAN(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHAN, 0)
+
+        def TIMESTAMPGREATERTHANPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHANPATH, 0)
+
+        def TIMESTAMPGREATERTHANEQUALS(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHANEQUALS, 0)
+
+        def TIMESTAMPGREATERTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPGREATERTHANEQUALSPATH, 0)
+
+        def TIMESTAMPLESSTHAN(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHAN, 0)
+
+        def TIMESTAMPLESSTHANPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHANPATH, 0)
+
+        def TIMESTAMPLESSTHANEQUALS(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHANEQUALS, 0)
+
+        def TIMESTAMPLESSTHANEQUALSPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPLESSTHANEQUALSPATH, 0)
+
+        def SECONDSPATH(self):
+            return self.getToken(ASLParser.SECONDSPATH, 0)
+
+        def SECONDS(self):
+            return self.getToken(ASLParser.SECONDS, 0)
+
+        def TIMESTAMPPATH(self):
+            return self.getToken(ASLParser.TIMESTAMPPATH, 0)
+
+        def TIMESTAMP(self):
+            return self.getToken(ASLParser.TIMESTAMP, 0)
+
+        def TIMEOUTSECONDS(self):
+            return self.getToken(ASLParser.TIMEOUTSECONDS, 0)
+
+        def TIMEOUTSECONDSPATH(self):
+            return self.getToken(ASLParser.TIMEOUTSECONDSPATH, 0)
+
+        def HEARTBEATSECONDS(self):
+            return self.getToken(ASLParser.HEARTBEATSECONDS, 0)
+
+        def HEARTBEATSECONDSPATH(self):
+            return self.getToken(ASLParser.HEARTBEATSECONDSPATH, 0)
+
+        def PROCESSORCONFIG(self):
+            return self.getToken(ASLParser.PROCESSORCONFIG, 0)
+
+        def MODE(self):
+            return self.getToken(ASLParser.MODE, 0)
+
+        def INLINE(self):
+            return self.getToken(ASLParser.INLINE, 0)
+
+        def DISTRIBUTED(self):
+            return self.getToken(ASLParser.DISTRIBUTED, 0)
+
+        def EXECUTIONTYPE(self):
+            return self.getToken(ASLParser.EXECUTIONTYPE, 0)
+
+        def STANDARD(self):
+            return self.getToken(ASLParser.STANDARD, 0)
+
+        def ITEMPROCESSOR(self):
+            return self.getToken(ASLParser.ITEMPROCESSOR, 0)
+
+        def ITERATOR(self):
+            return self.getToken(ASLParser.ITERATOR, 0)
+
+        def ITEMSELECTOR(self):
+            return self.getToken(ASLParser.ITEMSELECTOR, 0)
+
+        def MAXCONCURRENCY(self):
+            return self.getToken(ASLParser.MAXCONCURRENCY, 0)
+
+        def RESOURCE(self):
+            return self.getToken(ASLParser.RESOURCE, 0)
+
+        def INPUTPATH(self):
+            return self.getToken(ASLParser.INPUTPATH, 0)
+
+        def OUTPUTPATH(self):
+            return self.getToken(ASLParser.OUTPUTPATH, 0)
+
+        def ITEMSPATH(self):
+            return self.getToken(ASLParser.ITEMSPATH, 0)
+
+        def RESULTPATH(self):
+            return self.getToken(ASLParser.RESULTPATH, 0)
+
+        def RESULT(self):
+            return self.getToken(ASLParser.RESULT, 0)
+
+        def PARAMETERS(self):
+            return self.getToken(ASLParser.PARAMETERS, 0)
+
+        def RESULTSELECTOR(self):
+            return self.getToken(ASLParser.RESULTSELECTOR, 0)
+
+        def ITEMREADER(self):
+            return self.getToken(ASLParser.ITEMREADER, 0)
+
+        def READERCONFIG(self):
+            return self.getToken(ASLParser.READERCONFIG, 0)
+
+        def INPUTTYPE(self):
+            return self.getToken(ASLParser.INPUTTYPE, 0)
+
+        def CSVHEADERLOCATION(self):
+            return self.getToken(ASLParser.CSVHEADERLOCATION, 0)
+
+        def CSVHEADERS(self):
+            return self.getToken(ASLParser.CSVHEADERS, 0)
+
+        def MAXITEMS(self):
+            return self.getToken(ASLParser.MAXITEMS, 0)
+
+        def MAXITEMSPATH(self):
+            return self.getToken(ASLParser.MAXITEMSPATH, 0)
+
+        def NEXT(self):
+            return self.getToken(ASLParser.NEXT, 0)
+
+        def END(self):
+            return self.getToken(ASLParser.END, 0)
+
+        def CAUSE(self):
+            return self.getToken(ASLParser.CAUSE, 0)
+
+        def ERROR(self):
+            return self.getToken(ASLParser.ERROR, 0)
+
+        def RETRY(self):
+            return self.getToken(ASLParser.RETRY, 0)
+
+        def ERROREQUALS(self):
+            return self.getToken(ASLParser.ERROREQUALS, 0)
+
+        def INTERVALSECONDS(self):
+            return self.getToken(ASLParser.INTERVALSECONDS, 0)
+
+        def MAXATTEMPTS(self):
+            return self.getToken(ASLParser.MAXATTEMPTS, 0)
+
+        def BACKOFFRATE(self):
+            return self.getToken(ASLParser.BACKOFFRATE, 0)
+
+        def CATCH(self):
+            return self.getToken(ASLParser.CATCH, 0)
+
+        def ERRORNAMEStatesALL(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesALL, 0)
+
+        def ERRORNAMEStatesHeartbeatTimeout(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesHeartbeatTimeout, 0)
+
+        def ERRORNAMEStatesTimeout(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesTimeout, 0)
+
+        def ERRORNAMEStatesTaskFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesTaskFailed, 0)
+
+        def ERRORNAMEStatesPermissions(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesPermissions, 0)
+
+        def ERRORNAMEStatesResultPathMatchFailure(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesResultPathMatchFailure, 0)
+
+        def ERRORNAMEStatesParameterPathFailure(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesParameterPathFailure, 0)
+
+        def ERRORNAMEStatesBranchFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesBranchFailed, 0)
+
+        def ERRORNAMEStatesNoChoiceMatched(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesNoChoiceMatched, 0)
+
+        def ERRORNAMEStatesIntrinsicFailure(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesIntrinsicFailure, 0)
+
+        def ERRORNAMEStatesExceedToleratedFailureThreshold(self):
+            return self.getToken(
+                ASLParser.ERRORNAMEStatesExceedToleratedFailureThreshold, 0
+            )
+
+        def ERRORNAMEStatesItemReaderFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesItemReaderFailed, 0)
+
+        def ERRORNAMEStatesResultWriterFailed(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesResultWriterFailed, 0)
+
+        def ERRORNAMEStatesRuntime(self):
+            return self.getToken(ASLParser.ERRORNAMEStatesRuntime, 0)
+
+        def getRuleIndex(self):
+            return ASLParser.RULE_keyword_or_string
+
+        def enterRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "enterKeyword_or_string"):
+                listener.enterKeyword_or_string(self)
+
+        def exitRule(self, listener: ParseTreeListener):
+            if hasattr(listener, "exitKeyword_or_string"):
+                listener.exitKeyword_or_string(self)
+
+        def accept(self, visitor: ParseTreeVisitor):
+            if hasattr(visitor, "visitKeyword_or_string"):
+                return visitor.visitKeyword_or_string(self)
+            else:
+                return visitor.visitChildren(self)
+
+    def keyword_or_string(self):
+
+        localctx = ASLParser.Keyword_or_stringContext(self, self._ctx, self.state)
+        self.enterRule(localctx, 172, self.RULE_keyword_or_string)
+        self._la = 0  # Token type
+        try:
+            self.enterOuterAlt(localctx, 1)
+            self.state = 790
+            _la = self._input.LA(1)
+            if not (
+                ((((_la - 10)) & ~0x3F) == 0 and ((1 << (_la - 10)) & -17) != 0)
+                or (
+                    (((_la - 74)) & ~0x3F) == 0
+                    and ((1 << (_la - 74)) & 144115188075855871) != 0
+                )
+            ):
+                self._errHandler.recoverInline(self)
+            else:
+                self._errHandler.reportMatch(self)
+                self.consume()
+        except RecognitionException as re:
+            localctx.exception = re
+            self._errHandler.reportError(self, re)
+            self._errHandler.recover(self, re)
+        finally:
+            self.exitRule()
+        return localctx
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLParserListener.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLParserListener.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLParserListener.py
@@ -0,0 +1,809 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLParser.g4 by ANTLR 4.13.1
+from antlr4 import ParseTreeListener
+
+if "." in __name__:
+    from .ASLParser import ASLParser
+else:
+    from ASLParser import ASLParser
+
+# This class defines a complete listener for a parse tree produced by ASLParser.
+class ASLParserListener(ParseTreeListener):
+
+    # Enter a parse tree produced by ASLParser#program_decl.
+    def enterProgram_decl(self, ctx: ASLParser.Program_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#program_decl.
+    def exitProgram_decl(self, ctx: ASLParser.Program_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#top_layer_stmt.
+    def enterTop_layer_stmt(self, ctx: ASLParser.Top_layer_stmtContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#top_layer_stmt.
+    def exitTop_layer_stmt(self, ctx: ASLParser.Top_layer_stmtContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#startat_decl.
+    def enterStartat_decl(self, ctx: ASLParser.Startat_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#startat_decl.
+    def exitStartat_decl(self, ctx: ASLParser.Startat_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#comment_decl.
+    def enterComment_decl(self, ctx: ASLParser.Comment_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#comment_decl.
+    def exitComment_decl(self, ctx: ASLParser.Comment_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#version_decl.
+    def enterVersion_decl(self, ctx: ASLParser.Version_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#version_decl.
+    def exitVersion_decl(self, ctx: ASLParser.Version_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#state_stmt.
+    def enterState_stmt(self, ctx: ASLParser.State_stmtContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#state_stmt.
+    def exitState_stmt(self, ctx: ASLParser.State_stmtContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#states_decl.
+    def enterStates_decl(self, ctx: ASLParser.States_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#states_decl.
+    def exitStates_decl(self, ctx: ASLParser.States_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#state_name.
+    def enterState_name(self, ctx: ASLParser.State_nameContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#state_name.
+    def exitState_name(self, ctx: ASLParser.State_nameContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#state_decl.
+    def enterState_decl(self, ctx: ASLParser.State_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#state_decl.
+    def exitState_decl(self, ctx: ASLParser.State_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#state_decl_body.
+    def enterState_decl_body(self, ctx: ASLParser.State_decl_bodyContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#state_decl_body.
+    def exitState_decl_body(self, ctx: ASLParser.State_decl_bodyContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#type_decl.
+    def enterType_decl(self, ctx: ASLParser.Type_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#type_decl.
+    def exitType_decl(self, ctx: ASLParser.Type_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#next_decl.
+    def enterNext_decl(self, ctx: ASLParser.Next_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#next_decl.
+    def exitNext_decl(self, ctx: ASLParser.Next_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#resource_decl.
+    def enterResource_decl(self, ctx: ASLParser.Resource_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#resource_decl.
+    def exitResource_decl(self, ctx: ASLParser.Resource_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#input_path_decl.
+    def enterInput_path_decl(self, ctx: ASLParser.Input_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#input_path_decl.
+    def exitInput_path_decl(self, ctx: ASLParser.Input_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#result_decl.
+    def enterResult_decl(self, ctx: ASLParser.Result_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#result_decl.
+    def exitResult_decl(self, ctx: ASLParser.Result_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#result_path_decl.
+    def enterResult_path_decl(self, ctx: ASLParser.Result_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#result_path_decl.
+    def exitResult_path_decl(self, ctx: ASLParser.Result_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#output_path_decl.
+    def enterOutput_path_decl(self, ctx: ASLParser.Output_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#output_path_decl.
+    def exitOutput_path_decl(self, ctx: ASLParser.Output_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#end_decl.
+    def enterEnd_decl(self, ctx: ASLParser.End_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#end_decl.
+    def exitEnd_decl(self, ctx: ASLParser.End_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#default_decl.
+    def enterDefault_decl(self, ctx: ASLParser.Default_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#default_decl.
+    def exitDefault_decl(self, ctx: ASLParser.Default_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#error_decl.
+    def enterError_decl(self, ctx: ASLParser.Error_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#error_decl.
+    def exitError_decl(self, ctx: ASLParser.Error_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#cause_decl.
+    def enterCause_decl(self, ctx: ASLParser.Cause_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#cause_decl.
+    def exitCause_decl(self, ctx: ASLParser.Cause_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#seconds_decl.
+    def enterSeconds_decl(self, ctx: ASLParser.Seconds_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#seconds_decl.
+    def exitSeconds_decl(self, ctx: ASLParser.Seconds_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#seconds_path_decl.
+    def enterSeconds_path_decl(self, ctx: ASLParser.Seconds_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#seconds_path_decl.
+    def exitSeconds_path_decl(self, ctx: ASLParser.Seconds_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#timestamp_decl.
+    def enterTimestamp_decl(self, ctx: ASLParser.Timestamp_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#timestamp_decl.
+    def exitTimestamp_decl(self, ctx: ASLParser.Timestamp_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#timestamp_path_decl.
+    def enterTimestamp_path_decl(self, ctx: ASLParser.Timestamp_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#timestamp_path_decl.
+    def exitTimestamp_path_decl(self, ctx: ASLParser.Timestamp_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#items_path_decl.
+    def enterItems_path_decl(self, ctx: ASLParser.Items_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#items_path_decl.
+    def exitItems_path_decl(self, ctx: ASLParser.Items_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#max_concurrency_decl.
+    def enterMax_concurrency_decl(self, ctx: ASLParser.Max_concurrency_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#max_concurrency_decl.
+    def exitMax_concurrency_decl(self, ctx: ASLParser.Max_concurrency_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#parameters_decl.
+    def enterParameters_decl(self, ctx: ASLParser.Parameters_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#parameters_decl.
+    def exitParameters_decl(self, ctx: ASLParser.Parameters_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#timeout_seconds_decl.
+    def enterTimeout_seconds_decl(self, ctx: ASLParser.Timeout_seconds_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#timeout_seconds_decl.
+    def exitTimeout_seconds_decl(self, ctx: ASLParser.Timeout_seconds_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#timeout_seconds_path_decl.
+    def enterTimeout_seconds_path_decl(
+        self, ctx: ASLParser.Timeout_seconds_path_declContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#timeout_seconds_path_decl.
+    def exitTimeout_seconds_path_decl(
+        self, ctx: ASLParser.Timeout_seconds_path_declContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#heartbeat_seconds_decl.
+    def enterHeartbeat_seconds_decl(self, ctx: ASLParser.Heartbeat_seconds_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#heartbeat_seconds_decl.
+    def exitHeartbeat_seconds_decl(self, ctx: ASLParser.Heartbeat_seconds_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#heartbeat_seconds_path_decl.
+    def enterHeartbeat_seconds_path_decl(
+        self, ctx: ASLParser.Heartbeat_seconds_path_declContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#heartbeat_seconds_path_decl.
+    def exitHeartbeat_seconds_path_decl(
+        self, ctx: ASLParser.Heartbeat_seconds_path_declContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_tmpl_decl.
+    def enterPayload_tmpl_decl(self, ctx: ASLParser.Payload_tmpl_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_tmpl_decl.
+    def exitPayload_tmpl_decl(self, ctx: ASLParser.Payload_tmpl_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_binding_path.
+    def enterPayload_binding_path(self, ctx: ASLParser.Payload_binding_pathContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_binding_path.
+    def exitPayload_binding_path(self, ctx: ASLParser.Payload_binding_pathContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_binding_path_context_obj.
+    def enterPayload_binding_path_context_obj(
+        self, ctx: ASLParser.Payload_binding_path_context_objContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_binding_path_context_obj.
+    def exitPayload_binding_path_context_obj(
+        self, ctx: ASLParser.Payload_binding_path_context_objContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_binding_intrinsic_func.
+    def enterPayload_binding_intrinsic_func(
+        self, ctx: ASLParser.Payload_binding_intrinsic_funcContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_binding_intrinsic_func.
+    def exitPayload_binding_intrinsic_func(
+        self, ctx: ASLParser.Payload_binding_intrinsic_funcContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_binding_value.
+    def enterPayload_binding_value(self, ctx: ASLParser.Payload_binding_valueContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_binding_value.
+    def exitPayload_binding_value(self, ctx: ASLParser.Payload_binding_valueContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#intrinsic_func.
+    def enterIntrinsic_func(self, ctx: ASLParser.Intrinsic_funcContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#intrinsic_func.
+    def exitIntrinsic_func(self, ctx: ASLParser.Intrinsic_funcContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_arr_decl.
+    def enterPayload_arr_decl(self, ctx: ASLParser.Payload_arr_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_arr_decl.
+    def exitPayload_arr_decl(self, ctx: ASLParser.Payload_arr_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_value_decl.
+    def enterPayload_value_decl(self, ctx: ASLParser.Payload_value_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_value_decl.
+    def exitPayload_value_decl(self, ctx: ASLParser.Payload_value_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_value_float.
+    def enterPayload_value_float(self, ctx: ASLParser.Payload_value_floatContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_value_float.
+    def exitPayload_value_float(self, ctx: ASLParser.Payload_value_floatContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_value_int.
+    def enterPayload_value_int(self, ctx: ASLParser.Payload_value_intContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_value_int.
+    def exitPayload_value_int(self, ctx: ASLParser.Payload_value_intContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_value_bool.
+    def enterPayload_value_bool(self, ctx: ASLParser.Payload_value_boolContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_value_bool.
+    def exitPayload_value_bool(self, ctx: ASLParser.Payload_value_boolContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_value_null.
+    def enterPayload_value_null(self, ctx: ASLParser.Payload_value_nullContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_value_null.
+    def exitPayload_value_null(self, ctx: ASLParser.Payload_value_nullContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#payload_value_str.
+    def enterPayload_value_str(self, ctx: ASLParser.Payload_value_strContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#payload_value_str.
+    def exitPayload_value_str(self, ctx: ASLParser.Payload_value_strContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#result_selector_decl.
+    def enterResult_selector_decl(self, ctx: ASLParser.Result_selector_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#result_selector_decl.
+    def exitResult_selector_decl(self, ctx: ASLParser.Result_selector_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#state_type.
+    def enterState_type(self, ctx: ASLParser.State_typeContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#state_type.
+    def exitState_type(self, ctx: ASLParser.State_typeContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#choices_decl.
+    def enterChoices_decl(self, ctx: ASLParser.Choices_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#choices_decl.
+    def exitChoices_decl(self, ctx: ASLParser.Choices_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#choice_rule_comparison_variable.
+    def enterChoice_rule_comparison_variable(
+        self, ctx: ASLParser.Choice_rule_comparison_variableContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#choice_rule_comparison_variable.
+    def exitChoice_rule_comparison_variable(
+        self, ctx: ASLParser.Choice_rule_comparison_variableContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#choice_rule_comparison_composite.
+    def enterChoice_rule_comparison_composite(
+        self, ctx: ASLParser.Choice_rule_comparison_compositeContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#choice_rule_comparison_composite.
+    def exitChoice_rule_comparison_composite(
+        self, ctx: ASLParser.Choice_rule_comparison_compositeContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#comparison_variable_stmt.
+    def enterComparison_variable_stmt(
+        self, ctx: ASLParser.Comparison_variable_stmtContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#comparison_variable_stmt.
+    def exitComparison_variable_stmt(
+        self, ctx: ASLParser.Comparison_variable_stmtContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#comparison_composite_stmt.
+    def enterComparison_composite_stmt(
+        self, ctx: ASLParser.Comparison_composite_stmtContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#comparison_composite_stmt.
+    def exitComparison_composite_stmt(
+        self, ctx: ASLParser.Comparison_composite_stmtContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#comparison_composite.
+    def enterComparison_composite(self, ctx: ASLParser.Comparison_compositeContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#comparison_composite.
+    def exitComparison_composite(self, ctx: ASLParser.Comparison_compositeContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#variable_decl.
+    def enterVariable_decl(self, ctx: ASLParser.Variable_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#variable_decl.
+    def exitVariable_decl(self, ctx: ASLParser.Variable_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#comparison_func.
+    def enterComparison_func(self, ctx: ASLParser.Comparison_funcContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#comparison_func.
+    def exitComparison_func(self, ctx: ASLParser.Comparison_funcContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#branches_decl.
+    def enterBranches_decl(self, ctx: ASLParser.Branches_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#branches_decl.
+    def exitBranches_decl(self, ctx: ASLParser.Branches_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#item_processor_decl.
+    def enterItem_processor_decl(self, ctx: ASLParser.Item_processor_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#item_processor_decl.
+    def exitItem_processor_decl(self, ctx: ASLParser.Item_processor_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#item_processor_item.
+    def enterItem_processor_item(self, ctx: ASLParser.Item_processor_itemContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#item_processor_item.
+    def exitItem_processor_item(self, ctx: ASLParser.Item_processor_itemContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#processor_config_decl.
+    def enterProcessor_config_decl(self, ctx: ASLParser.Processor_config_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#processor_config_decl.
+    def exitProcessor_config_decl(self, ctx: ASLParser.Processor_config_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#processor_config_field.
+    def enterProcessor_config_field(self, ctx: ASLParser.Processor_config_fieldContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#processor_config_field.
+    def exitProcessor_config_field(self, ctx: ASLParser.Processor_config_fieldContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#mode_decl.
+    def enterMode_decl(self, ctx: ASLParser.Mode_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#mode_decl.
+    def exitMode_decl(self, ctx: ASLParser.Mode_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#mode_type.
+    def enterMode_type(self, ctx: ASLParser.Mode_typeContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#mode_type.
+    def exitMode_type(self, ctx: ASLParser.Mode_typeContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#execution_decl.
+    def enterExecution_decl(self, ctx: ASLParser.Execution_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#execution_decl.
+    def exitExecution_decl(self, ctx: ASLParser.Execution_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#execution_type.
+    def enterExecution_type(self, ctx: ASLParser.Execution_typeContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#execution_type.
+    def exitExecution_type(self, ctx: ASLParser.Execution_typeContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#iterator_decl.
+    def enterIterator_decl(self, ctx: ASLParser.Iterator_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#iterator_decl.
+    def exitIterator_decl(self, ctx: ASLParser.Iterator_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#iterator_decl_item.
+    def enterIterator_decl_item(self, ctx: ASLParser.Iterator_decl_itemContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#iterator_decl_item.
+    def exitIterator_decl_item(self, ctx: ASLParser.Iterator_decl_itemContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#item_selector_decl.
+    def enterItem_selector_decl(self, ctx: ASLParser.Item_selector_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#item_selector_decl.
+    def exitItem_selector_decl(self, ctx: ASLParser.Item_selector_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#item_reader_decl.
+    def enterItem_reader_decl(self, ctx: ASLParser.Item_reader_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#item_reader_decl.
+    def exitItem_reader_decl(self, ctx: ASLParser.Item_reader_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#items_reader_field.
+    def enterItems_reader_field(self, ctx: ASLParser.Items_reader_fieldContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#items_reader_field.
+    def exitItems_reader_field(self, ctx: ASLParser.Items_reader_fieldContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#reader_config_decl.
+    def enterReader_config_decl(self, ctx: ASLParser.Reader_config_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#reader_config_decl.
+    def exitReader_config_decl(self, ctx: ASLParser.Reader_config_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#reader_config_field.
+    def enterReader_config_field(self, ctx: ASLParser.Reader_config_fieldContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#reader_config_field.
+    def exitReader_config_field(self, ctx: ASLParser.Reader_config_fieldContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#input_type_decl.
+    def enterInput_type_decl(self, ctx: ASLParser.Input_type_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#input_type_decl.
+    def exitInput_type_decl(self, ctx: ASLParser.Input_type_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#csv_header_location_decl.
+    def enterCsv_header_location_decl(
+        self, ctx: ASLParser.Csv_header_location_declContext
+    ):
+        pass
+
+    # Exit a parse tree produced by ASLParser#csv_header_location_decl.
+    def exitCsv_header_location_decl(
+        self, ctx: ASLParser.Csv_header_location_declContext
+    ):
+        pass
+
+    # Enter a parse tree produced by ASLParser#csv_headers_decl.
+    def enterCsv_headers_decl(self, ctx: ASLParser.Csv_headers_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#csv_headers_decl.
+    def exitCsv_headers_decl(self, ctx: ASLParser.Csv_headers_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#max_items_decl.
+    def enterMax_items_decl(self, ctx: ASLParser.Max_items_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#max_items_decl.
+    def exitMax_items_decl(self, ctx: ASLParser.Max_items_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#max_items_path_decl.
+    def enterMax_items_path_decl(self, ctx: ASLParser.Max_items_path_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#max_items_path_decl.
+    def exitMax_items_path_decl(self, ctx: ASLParser.Max_items_path_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#retry_decl.
+    def enterRetry_decl(self, ctx: ASLParser.Retry_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#retry_decl.
+    def exitRetry_decl(self, ctx: ASLParser.Retry_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#retrier_decl.
+    def enterRetrier_decl(self, ctx: ASLParser.Retrier_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#retrier_decl.
+    def exitRetrier_decl(self, ctx: ASLParser.Retrier_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#retrier_stmt.
+    def enterRetrier_stmt(self, ctx: ASLParser.Retrier_stmtContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#retrier_stmt.
+    def exitRetrier_stmt(self, ctx: ASLParser.Retrier_stmtContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#error_equals_decl.
+    def enterError_equals_decl(self, ctx: ASLParser.Error_equals_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#error_equals_decl.
+    def exitError_equals_decl(self, ctx: ASLParser.Error_equals_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#interval_seconds_decl.
+    def enterInterval_seconds_decl(self, ctx: ASLParser.Interval_seconds_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#interval_seconds_decl.
+    def exitInterval_seconds_decl(self, ctx: ASLParser.Interval_seconds_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#max_attempts_decl.
+    def enterMax_attempts_decl(self, ctx: ASLParser.Max_attempts_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#max_attempts_decl.
+    def exitMax_attempts_decl(self, ctx: ASLParser.Max_attempts_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#backoff_rate_decl.
+    def enterBackoff_rate_decl(self, ctx: ASLParser.Backoff_rate_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#backoff_rate_decl.
+    def exitBackoff_rate_decl(self, ctx: ASLParser.Backoff_rate_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#catch_decl.
+    def enterCatch_decl(self, ctx: ASLParser.Catch_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#catch_decl.
+    def exitCatch_decl(self, ctx: ASLParser.Catch_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#catcher_decl.
+    def enterCatcher_decl(self, ctx: ASLParser.Catcher_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#catcher_decl.
+    def exitCatcher_decl(self, ctx: ASLParser.Catcher_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#catcher_stmt.
+    def enterCatcher_stmt(self, ctx: ASLParser.Catcher_stmtContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#catcher_stmt.
+    def exitCatcher_stmt(self, ctx: ASLParser.Catcher_stmtContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#comparison_op.
+    def enterComparison_op(self, ctx: ASLParser.Comparison_opContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#comparison_op.
+    def exitComparison_op(self, ctx: ASLParser.Comparison_opContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#choice_operator.
+    def enterChoice_operator(self, ctx: ASLParser.Choice_operatorContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#choice_operator.
+    def exitChoice_operator(self, ctx: ASLParser.Choice_operatorContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#states_error_name.
+    def enterStates_error_name(self, ctx: ASLParser.States_error_nameContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#states_error_name.
+    def exitStates_error_name(self, ctx: ASLParser.States_error_nameContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#error_name.
+    def enterError_name(self, ctx: ASLParser.Error_nameContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#error_name.
+    def exitError_name(self, ctx: ASLParser.Error_nameContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#json_obj_decl.
+    def enterJson_obj_decl(self, ctx: ASLParser.Json_obj_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#json_obj_decl.
+    def exitJson_obj_decl(self, ctx: ASLParser.Json_obj_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#json_binding.
+    def enterJson_binding(self, ctx: ASLParser.Json_bindingContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#json_binding.
+    def exitJson_binding(self, ctx: ASLParser.Json_bindingContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#json_arr_decl.
+    def enterJson_arr_decl(self, ctx: ASLParser.Json_arr_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#json_arr_decl.
+    def exitJson_arr_decl(self, ctx: ASLParser.Json_arr_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#json_value_decl.
+    def enterJson_value_decl(self, ctx: ASLParser.Json_value_declContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#json_value_decl.
+    def exitJson_value_decl(self, ctx: ASLParser.Json_value_declContext):
+        pass
+
+    # Enter a parse tree produced by ASLParser#keyword_or_string.
+    def enterKeyword_or_string(self, ctx: ASLParser.Keyword_or_stringContext):
+        pass
+
+    # Exit a parse tree produced by ASLParser#keyword_or_string.
+    def exitKeyword_or_string(self, ctx: ASLParser.Keyword_or_stringContext):
+        pass
+
+
+del ASLParser
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/ASLParserVisitor.py b/moto/stepfunctions/parser/asl/antlr/runtime/ASLParserVisitor.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlr/runtime/ASLParserVisitor.py
@@ -0,0 +1,413 @@
+# Generated from /Users/mep/LocalStack/localstack/localstack/services/stepfunctions/asl/antlr/ASLParser.g4 by ANTLR 4.13.1
+from antlr4 import ParseTreeVisitor
+
+if "." in __name__:
+    from .ASLParser import ASLParser
+else:
+    from ASLParser import ASLParser
+
+# This class defines a complete generic visitor for a parse tree produced by ASLParser.
+
+
+class ASLParserVisitor(ParseTreeVisitor):
+
+    # Visit a parse tree produced by ASLParser#program_decl.
+    def visitProgram_decl(self, ctx: ASLParser.Program_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#top_layer_stmt.
+    def visitTop_layer_stmt(self, ctx: ASLParser.Top_layer_stmtContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#startat_decl.
+    def visitStartat_decl(self, ctx: ASLParser.Startat_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#comment_decl.
+    def visitComment_decl(self, ctx: ASLParser.Comment_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#version_decl.
+    def visitVersion_decl(self, ctx: ASLParser.Version_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#state_stmt.
+    def visitState_stmt(self, ctx: ASLParser.State_stmtContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#states_decl.
+    def visitStates_decl(self, ctx: ASLParser.States_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#state_name.
+    def visitState_name(self, ctx: ASLParser.State_nameContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#state_decl.
+    def visitState_decl(self, ctx: ASLParser.State_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#state_decl_body.
+    def visitState_decl_body(self, ctx: ASLParser.State_decl_bodyContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#type_decl.
+    def visitType_decl(self, ctx: ASLParser.Type_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#next_decl.
+    def visitNext_decl(self, ctx: ASLParser.Next_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#resource_decl.
+    def visitResource_decl(self, ctx: ASLParser.Resource_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#input_path_decl.
+    def visitInput_path_decl(self, ctx: ASLParser.Input_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#result_decl.
+    def visitResult_decl(self, ctx: ASLParser.Result_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#result_path_decl.
+    def visitResult_path_decl(self, ctx: ASLParser.Result_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#output_path_decl.
+    def visitOutput_path_decl(self, ctx: ASLParser.Output_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#end_decl.
+    def visitEnd_decl(self, ctx: ASLParser.End_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#default_decl.
+    def visitDefault_decl(self, ctx: ASLParser.Default_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#error_decl.
+    def visitError_decl(self, ctx: ASLParser.Error_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#cause_decl.
+    def visitCause_decl(self, ctx: ASLParser.Cause_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#seconds_decl.
+    def visitSeconds_decl(self, ctx: ASLParser.Seconds_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#seconds_path_decl.
+    def visitSeconds_path_decl(self, ctx: ASLParser.Seconds_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#timestamp_decl.
+    def visitTimestamp_decl(self, ctx: ASLParser.Timestamp_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#timestamp_path_decl.
+    def visitTimestamp_path_decl(self, ctx: ASLParser.Timestamp_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#items_path_decl.
+    def visitItems_path_decl(self, ctx: ASLParser.Items_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#max_concurrency_decl.
+    def visitMax_concurrency_decl(self, ctx: ASLParser.Max_concurrency_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#parameters_decl.
+    def visitParameters_decl(self, ctx: ASLParser.Parameters_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#timeout_seconds_decl.
+    def visitTimeout_seconds_decl(self, ctx: ASLParser.Timeout_seconds_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#timeout_seconds_path_decl.
+    def visitTimeout_seconds_path_decl(
+        self, ctx: ASLParser.Timeout_seconds_path_declContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#heartbeat_seconds_decl.
+    def visitHeartbeat_seconds_decl(self, ctx: ASLParser.Heartbeat_seconds_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#heartbeat_seconds_path_decl.
+    def visitHeartbeat_seconds_path_decl(
+        self, ctx: ASLParser.Heartbeat_seconds_path_declContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_tmpl_decl.
+    def visitPayload_tmpl_decl(self, ctx: ASLParser.Payload_tmpl_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_binding_path.
+    def visitPayload_binding_path(self, ctx: ASLParser.Payload_binding_pathContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_binding_path_context_obj.
+    def visitPayload_binding_path_context_obj(
+        self, ctx: ASLParser.Payload_binding_path_context_objContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_binding_intrinsic_func.
+    def visitPayload_binding_intrinsic_func(
+        self, ctx: ASLParser.Payload_binding_intrinsic_funcContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_binding_value.
+    def visitPayload_binding_value(self, ctx: ASLParser.Payload_binding_valueContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#intrinsic_func.
+    def visitIntrinsic_func(self, ctx: ASLParser.Intrinsic_funcContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_arr_decl.
+    def visitPayload_arr_decl(self, ctx: ASLParser.Payload_arr_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_value_decl.
+    def visitPayload_value_decl(self, ctx: ASLParser.Payload_value_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_value_float.
+    def visitPayload_value_float(self, ctx: ASLParser.Payload_value_floatContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_value_int.
+    def visitPayload_value_int(self, ctx: ASLParser.Payload_value_intContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_value_bool.
+    def visitPayload_value_bool(self, ctx: ASLParser.Payload_value_boolContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_value_null.
+    def visitPayload_value_null(self, ctx: ASLParser.Payload_value_nullContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#payload_value_str.
+    def visitPayload_value_str(self, ctx: ASLParser.Payload_value_strContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#result_selector_decl.
+    def visitResult_selector_decl(self, ctx: ASLParser.Result_selector_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#state_type.
+    def visitState_type(self, ctx: ASLParser.State_typeContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#choices_decl.
+    def visitChoices_decl(self, ctx: ASLParser.Choices_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#choice_rule_comparison_variable.
+    def visitChoice_rule_comparison_variable(
+        self, ctx: ASLParser.Choice_rule_comparison_variableContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#choice_rule_comparison_composite.
+    def visitChoice_rule_comparison_composite(
+        self, ctx: ASLParser.Choice_rule_comparison_compositeContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#comparison_variable_stmt.
+    def visitComparison_variable_stmt(
+        self, ctx: ASLParser.Comparison_variable_stmtContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#comparison_composite_stmt.
+    def visitComparison_composite_stmt(
+        self, ctx: ASLParser.Comparison_composite_stmtContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#comparison_composite.
+    def visitComparison_composite(self, ctx: ASLParser.Comparison_compositeContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#variable_decl.
+    def visitVariable_decl(self, ctx: ASLParser.Variable_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#comparison_func.
+    def visitComparison_func(self, ctx: ASLParser.Comparison_funcContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#branches_decl.
+    def visitBranches_decl(self, ctx: ASLParser.Branches_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#item_processor_decl.
+    def visitItem_processor_decl(self, ctx: ASLParser.Item_processor_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#item_processor_item.
+    def visitItem_processor_item(self, ctx: ASLParser.Item_processor_itemContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#processor_config_decl.
+    def visitProcessor_config_decl(self, ctx: ASLParser.Processor_config_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#processor_config_field.
+    def visitProcessor_config_field(self, ctx: ASLParser.Processor_config_fieldContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#mode_decl.
+    def visitMode_decl(self, ctx: ASLParser.Mode_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#mode_type.
+    def visitMode_type(self, ctx: ASLParser.Mode_typeContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#execution_decl.
+    def visitExecution_decl(self, ctx: ASLParser.Execution_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#execution_type.
+    def visitExecution_type(self, ctx: ASLParser.Execution_typeContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#iterator_decl.
+    def visitIterator_decl(self, ctx: ASLParser.Iterator_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#iterator_decl_item.
+    def visitIterator_decl_item(self, ctx: ASLParser.Iterator_decl_itemContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#item_selector_decl.
+    def visitItem_selector_decl(self, ctx: ASLParser.Item_selector_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#item_reader_decl.
+    def visitItem_reader_decl(self, ctx: ASLParser.Item_reader_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#items_reader_field.
+    def visitItems_reader_field(self, ctx: ASLParser.Items_reader_fieldContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#reader_config_decl.
+    def visitReader_config_decl(self, ctx: ASLParser.Reader_config_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#reader_config_field.
+    def visitReader_config_field(self, ctx: ASLParser.Reader_config_fieldContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#input_type_decl.
+    def visitInput_type_decl(self, ctx: ASLParser.Input_type_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#csv_header_location_decl.
+    def visitCsv_header_location_decl(
+        self, ctx: ASLParser.Csv_header_location_declContext
+    ):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#csv_headers_decl.
+    def visitCsv_headers_decl(self, ctx: ASLParser.Csv_headers_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#max_items_decl.
+    def visitMax_items_decl(self, ctx: ASLParser.Max_items_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#max_items_path_decl.
+    def visitMax_items_path_decl(self, ctx: ASLParser.Max_items_path_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#retry_decl.
+    def visitRetry_decl(self, ctx: ASLParser.Retry_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#retrier_decl.
+    def visitRetrier_decl(self, ctx: ASLParser.Retrier_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#retrier_stmt.
+    def visitRetrier_stmt(self, ctx: ASLParser.Retrier_stmtContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#error_equals_decl.
+    def visitError_equals_decl(self, ctx: ASLParser.Error_equals_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#interval_seconds_decl.
+    def visitInterval_seconds_decl(self, ctx: ASLParser.Interval_seconds_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#max_attempts_decl.
+    def visitMax_attempts_decl(self, ctx: ASLParser.Max_attempts_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#backoff_rate_decl.
+    def visitBackoff_rate_decl(self, ctx: ASLParser.Backoff_rate_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#catch_decl.
+    def visitCatch_decl(self, ctx: ASLParser.Catch_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#catcher_decl.
+    def visitCatcher_decl(self, ctx: ASLParser.Catcher_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#catcher_stmt.
+    def visitCatcher_stmt(self, ctx: ASLParser.Catcher_stmtContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#comparison_op.
+    def visitComparison_op(self, ctx: ASLParser.Comparison_opContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#choice_operator.
+    def visitChoice_operator(self, ctx: ASLParser.Choice_operatorContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#states_error_name.
+    def visitStates_error_name(self, ctx: ASLParser.States_error_nameContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#error_name.
+    def visitError_name(self, ctx: ASLParser.Error_nameContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#json_obj_decl.
+    def visitJson_obj_decl(self, ctx: ASLParser.Json_obj_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#json_binding.
+    def visitJson_binding(self, ctx: ASLParser.Json_bindingContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#json_arr_decl.
+    def visitJson_arr_decl(self, ctx: ASLParser.Json_arr_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#json_value_decl.
+    def visitJson_value_decl(self, ctx: ASLParser.Json_value_declContext):
+        return self.visitChildren(ctx)
+
+    # Visit a parse tree produced by ASLParser#keyword_or_string.
+    def visitKeyword_or_string(self, ctx: ASLParser.Keyword_or_stringContext):
+        return self.visitChildren(ctx)
+
+
+del ASLParser
diff --git a/moto/stepfunctions/parser/asl/antlr/runtime/__init__.py b/moto/stepfunctions/parser/asl/antlr/runtime/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/antlt4utils/__init__.py b/moto/stepfunctions/parser/asl/antlt4utils/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/antlt4utils/antlr4utils.py b/moto/stepfunctions/parser/asl/antlt4utils/antlr4utils.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/antlt4utils/antlr4utils.py
@@ -0,0 +1,27 @@
+from typing import Optional
+
+from antlr4 import ParserRuleContext
+from antlr4.tree.Tree import ParseTree, TerminalNodeImpl
+
+
+class Antlr4Utils:
+    @staticmethod
+    def is_production(
+        pt: ParseTree, rule_index: Optional[int] = None
+    ) -> Optional[ParserRuleContext]:
+        if isinstance(pt, ParserRuleContext):
+            prc = pt.getRuleContext()  # noqa
+            if rule_index is not None:
+                return prc if prc.getRuleIndex() == rule_index else None
+            return prc
+        return None
+
+    @staticmethod
+    def is_terminal(
+        pt: ParseTree, token_type: Optional[int] = None
+    ) -> Optional[TerminalNodeImpl]:
+        if isinstance(pt, TerminalNodeImpl):
+            if token_type is not None:
+                return pt if pt.getSymbol().type == token_type else None
+            return pt
+        return None
diff --git a/moto/stepfunctions/parser/asl/component/__init__.py b/moto/stepfunctions/parser/asl/component/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/__init__.py b/moto/stepfunctions/parser/asl/component/common/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/catch/__init__.py b/moto/stepfunctions/parser/asl/component/common/catch/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/catch/catch_decl.py b/moto/stepfunctions/parser/asl/component/common/catch/catch_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/catch/catch_decl.py
@@ -0,0 +1,30 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.common.catch.catch_outcome import (
+    CatchOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.catch.catcher_decl import (
+    CatcherDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.catch.catcher_outcome import (
+    CatcherOutcome,
+    CatcherOutcomeCaught,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class CatchDecl(EvalComponent):
+    def __init__(self, catchers: List[CatcherDecl]):
+        self.catchers: Final[List[CatcherDecl]] = catchers
+
+    def _eval_body(self, env: Environment) -> None:
+        for catcher in self.catchers:
+            catcher.eval(env)
+            catcher_outcome: CatcherOutcome = env.stack.pop()
+
+            if isinstance(catcher_outcome, CatcherOutcomeCaught):
+                env.stack.append(CatchOutcome.Caught)
+                return
+
+        env.stack.append(CatchOutcome.NotCaught)
diff --git a/moto/stepfunctions/parser/asl/component/common/catch/catch_outcome.py b/moto/stepfunctions/parser/asl/component/common/catch/catch_outcome.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/catch/catch_outcome.py
@@ -0,0 +1,6 @@
+from enum import Enum
+
+
+class CatchOutcome(Enum):
+    Caught = 0
+    NotCaught = 1
diff --git a/moto/stepfunctions/parser/asl/component/common/catch/catcher_decl.py b/moto/stepfunctions/parser/asl/component/common/catch/catcher_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/catch/catcher_decl.py
@@ -0,0 +1,96 @@
+from __future__ import annotations
+
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.common.catch.catcher_outcome import (
+    CatcherOutcomeCaught,
+    CatcherOutcomeNotCaught,
+)
+from moto.stepfunctions.parser.asl.component.common.catch.catcher_props import (
+    CatcherProps,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.error_equals_decl import (
+    ErrorEqualsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.common.path.result_path import ResultPath
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class CatcherDecl(EvalComponent):
+    _DEFAULT_RESULT_PATH: Final[ResultPath] = ResultPath(result_path_src="$")
+
+    def __init__(
+        self,
+        error_equals: ErrorEqualsDecl,
+        next_decl: Next,
+        result_path: ResultPath = _DEFAULT_RESULT_PATH,
+    ):
+        self.error_equals: Final[ErrorEqualsDecl] = error_equals
+        self.result_path: Final[ResultPath] = (
+            result_path or CatcherDecl._DEFAULT_RESULT_PATH
+        )
+        self.next_decl: Final[Next] = next_decl
+
+    @classmethod
+    def from_catcher_props(cls, props: CatcherProps) -> CatcherDecl:
+        return cls(
+            error_equals=props.get(
+                typ=ErrorEqualsDecl,
+                raise_on_missing=ValueError(
+                    f"Missing ErrorEquals declaration for Catcher declaration, in props '{props}'."
+                ),
+            ),
+            next_decl=props.get(
+                typ=Next,
+                raise_on_missing=ValueError(
+                    f"Missing Next declaration for Catcher declaration, in props '{props}'."
+                ),
+            ),
+            result_path=props.get(typ=ResultPath),
+        )
+
+    @staticmethod
+    def _extract_error_cause(failure_event: FailureEvent) -> dict:
+        # TODO: consider formalising all EventDetails to ensure FailureEvent can always reach the state below.
+        #  As per AWS's Api specification, all failure event carry one
+        #  details field, with at least fields 'cause and 'error'
+        specs_event_details = list(failure_event.event_details.values())
+        if (
+            len(specs_event_details) != 1
+            and "error" in specs_event_details
+            and "cause" in specs_event_details
+        ):
+            raise RuntimeError(
+                f"Internal Error: invalid event details declaration in FailureEvent: '{failure_event}'."
+            )
+        spec_event_details: dict = list(failure_event.event_details.values())[0]
+        error = spec_event_details["error"]
+        cause = spec_event_details.get("cause") or ""
+        # Stepfunctions renames these fields to capital in this scenario.
+        return {
+            "Error": error,
+            "Cause": cause,
+        }
+
+    def _eval_body(self, env: Environment) -> None:
+        failure_event: FailureEvent = env.stack.pop()
+
+        env.stack.append(failure_event.error_name)
+        self.error_equals.eval(env)
+
+        equals: bool = env.stack.pop()
+        if equals:
+            error_cause: dict = self._extract_error_cause(failure_event)
+            env.stack.append(error_cause)
+
+            self.result_path.eval(env)
+            env.next_state_name = self.next_decl.name
+            env.stack.append(CatcherOutcomeCaught())
+        else:
+            env.stack.append(failure_event)
+            env.stack.append(CatcherOutcomeNotCaught())
diff --git a/moto/stepfunctions/parser/asl/component/common/catch/catcher_outcome.py b/moto/stepfunctions/parser/asl/component/common/catch/catcher_outcome.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/catch/catcher_outcome.py
@@ -0,0 +1,13 @@
+import abc
+
+
+class CatcherOutcome(abc.ABC):
+    ...
+
+
+class CatcherOutcomeCaught(CatcherOutcome):
+    pass
+
+
+class CatcherOutcomeNotCaught(CatcherOutcome):
+    pass
diff --git a/moto/stepfunctions/parser/asl/component/common/catch/catcher_props.py b/moto/stepfunctions/parser/asl/component/common/catch/catcher_props.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/catch/catcher_props.py
@@ -0,0 +1,5 @@
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+
+class CatcherProps(TypedProps):
+    pass
diff --git a/moto/stepfunctions/parser/asl/component/common/cause_decl.py b/moto/stepfunctions/parser/asl/component/common/cause_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/cause_decl.py
@@ -0,0 +1,8 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class CauseDecl(Component):
+    def __init__(self, cause: str):
+        self.cause: Final[str] = cause
diff --git a/moto/stepfunctions/parser/asl/component/common/comment.py b/moto/stepfunctions/parser/asl/component/common/comment.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/comment.py
@@ -0,0 +1,8 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class Comment(Component):
+    def __init__(self, comment: str):
+        self.comment: Final[str] = comment
diff --git a/moto/stepfunctions/parser/asl/component/common/error_decl.py b/moto/stepfunctions/parser/asl/component/common/error_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_decl.py
@@ -0,0 +1,8 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class ErrorDecl(Component):
+    def __init__(self, error: str):
+        self.error: Final[str] = error
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/__init__.py b/moto/stepfunctions/parser/asl/component/common/error_name/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/custom_error_name.py b/moto/stepfunctions/parser/asl/component/common/error_name/custom_error_name.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_name/custom_error_name.py
@@ -0,0 +1,20 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+
+
+class CustomErrorName(ErrorName):
+    """
+    States MAY report errors with other names, which MUST NOT begin with the prefix "States.".
+    """
+
+    _ILLEGAL_PREFIX: Final[str] = "States."
+
+    def __init__(self, error_name: str):
+        if error_name.startswith(CustomErrorName._ILLEGAL_PREFIX):
+            raise ValueError(
+                f"Custom Error Names MUST NOT begin with the prefix 'States.', got '{error_name}'."
+            )
+        super().__init__(error_name=error_name)
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/error_equals_decl.py b/moto/stepfunctions/parser/asl/component/common/error_name/error_equals_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_name/error_equals_decl.py
@@ -0,0 +1,62 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ErrorEqualsDecl(EvalComponent):
+    """
+    ErrorEquals value MUST be a non-empty array of Strings, which match Error Names.
+    Each Retrier MUST contain a field named "ErrorEquals" whose value MUST be a non-empty array of Strings,
+    which match Error Names.
+    """
+
+    _STATE_ALL_ERROR: Final[StatesErrorName] = StatesErrorName(
+        typ=StatesErrorNameType.StatesALL
+    )
+    _STATE_TASK_ERROR: Final[StatesErrorName] = StatesErrorName(
+        typ=StatesErrorNameType.StatesTaskFailed
+    )
+
+    def __init__(self, error_names: List[ErrorName]):
+        # The reserved name "States.ALL" in a Retrier’s "ErrorEquals" field is a wildcard
+        # and matches any Error Name. Such a value MUST appear alone in the "ErrorEquals"
+        # array and MUST appear in the last Retrier in the "Retry" array.
+        if ErrorEqualsDecl._STATE_ALL_ERROR in error_names and len(error_names) > 1:
+            raise ValueError(
+                f"States.ALL must appear alone in the ErrorEquals array, got '{error_names}'."
+            )
+
+        # TODO: how to handle duplicate ErrorName?
+        self.error_names: List[ErrorName] = error_names
+
+    def _eval_body(self, env: Environment) -> None:
+        """
+        When a state reports an error, the interpreter scans through the Retriers and,
+        when the Error Name appears in the value of a Retrier’s "ErrorEquals" field, implements the retry policy
+        described in that Retrier.
+        This pops the error from the stack, and appends the bool of this check.
+        """
+
+        # Try to reduce error response to ErrorName or pass exception upstream.
+        error_name: ErrorName = env.stack.pop()
+
+        if ErrorEqualsDecl._STATE_ALL_ERROR in self.error_names:
+            res = True
+        elif ErrorEqualsDecl._STATE_TASK_ERROR in self.error_names and not isinstance(
+            error_name, StatesErrorName
+        ):  # TODO: consider binding a 'context' variable to error_names to more formally detect their evaluation type.
+            res = True
+        else:
+            res = error_name in self.error_names
+
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/error_name.py b/moto/stepfunctions/parser/asl/component/common/error_name/error_name.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_name/error_name.py
@@ -0,0 +1,19 @@
+from __future__ import annotations
+
+import abc
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class ErrorName(Component, abc.ABC):
+    def __init__(self, error_name: str):
+        self.error_name: Final[str] = error_name
+
+    def matches(self, error_name: str) -> bool:
+        return self.error_name == error_name
+
+    def __eq__(self, other):
+        if isinstance(other, ErrorName):
+            return self.matches(other.error_name)
+        return False
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/failure_event.py b/moto/stepfunctions/parser/asl/component/common/error_name/failure_event.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_name/failure_event.py
@@ -0,0 +1,58 @@
+from typing import Final, Optional, Tuple
+
+from moto.stepfunctions.parser.api import ExecutionFailedEventDetails, HistoryEventType
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class FailureEvent:
+    error_name: Final[Optional[ErrorName]]
+    event_type: Final[HistoryEventType]
+    event_details: Final[Optional[EventDetails]]
+
+    def __init__(
+        self,
+        error_name: Optional[ErrorName],
+        event_type: HistoryEventType,
+        event_details: Optional[EventDetails] = None,
+    ):
+        self.error_name = error_name
+        self.event_type = event_type
+        self.event_details = event_details
+
+
+class FailureEventException(Exception):
+    failure_event: Final[FailureEvent]
+
+    def __init__(self, failure_event: FailureEvent):
+        self.failure_event = failure_event
+
+    def extract_error_cause_pair(self) -> Optional[Tuple[Optional[str], Optional[str]]]:
+        if self.failure_event.event_details is None:
+            return None
+
+        failure_event_spec = list(self.failure_event.event_details.values())[0]
+
+        error = None
+        cause = None
+        if "error" in failure_event_spec:
+            error = failure_event_spec["error"]
+        if "cause" in failure_event_spec:
+            cause = failure_event_spec["cause"]
+        return error, cause
+
+    def get_execution_failed_event_details(
+        self,
+    ) -> Optional[ExecutionFailedEventDetails]:
+        maybe_error_cause_pair = self.extract_error_cause_pair()
+        if maybe_error_cause_pair is None:
+            return None
+        execution_failed_event_details = ExecutionFailedEventDetails()
+        error, cause = maybe_error_cause_pair
+        if error:
+            execution_failed_event_details["error"] = error
+        if cause:
+            execution_failed_event_details["cause"] = cause
+        return execution_failed_event_details
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/states_error_name.py b/moto/stepfunctions/parser/asl/component/common/error_name/states_error_name.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_name/states_error_name.py
@@ -0,0 +1,21 @@
+from __future__ import annotations
+
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+
+
+class StatesErrorName(ErrorName):
+    def __init__(self, typ: StatesErrorNameType):
+        super().__init__(error_name=typ.to_name())
+        self.typ: Final[StatesErrorNameType] = typ
+
+    @classmethod
+    def from_name(cls, error_name: str) -> StatesErrorName:
+        error_name_type: StatesErrorNameType = StatesErrorNameType.from_name(error_name)
+        return cls(typ=error_name_type)
diff --git a/moto/stepfunctions/parser/asl/component/common/error_name/states_error_name_type.py b/moto/stepfunctions/parser/asl/component/common/error_name/states_error_name_type.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/error_name/states_error_name_type.py
@@ -0,0 +1,52 @@
+from __future__ import annotations
+
+from enum import Enum
+from typing import Dict, Final
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+
+
+class StatesErrorNameType(Enum):
+    StatesALL = ASLLexer.ERRORNAMEStatesALL
+    StatesHeartbeatTimeout = ASLLexer.ERRORNAMEStatesHeartbeatTimeout
+    StatesTimeout = ASLLexer.ERRORNAMEStatesTimeout
+    StatesTaskFailed = ASLLexer.ERRORNAMEStatesTaskFailed
+    StatesPermissions = ASLLexer.ERRORNAMEStatesPermissions
+    StatesResultPathMatchFailure = ASLLexer.ERRORNAMEStatesResultPathMatchFailure
+    StatesParameterPathFailure = ASLLexer.ERRORNAMEStatesParameterPathFailure
+    StatesBranchFailed = ASLLexer.ERRORNAMEStatesBranchFailed
+    StatesNoChoiceMatched = ASLLexer.ERRORNAMEStatesNoChoiceMatched
+    StatesIntrinsicFailure = ASLLexer.ERRORNAMEStatesIntrinsicFailure
+    StatesExceedToleratedFailureThreshold = (
+        ASLLexer.ERRORNAMEStatesExceedToleratedFailureThreshold
+    )
+    StatesItemReaderFailed = ASLLexer.ERRORNAMEStatesItemReaderFailed
+    StatesResultWriterFailed = ASLLexer.ERRORNAMEStatesResultWriterFailed
+    StatesRuntime = ASLLexer.ERRORNAMEStatesRuntime
+
+    def to_name(self) -> str:
+        return _error_name(self)
+
+    @classmethod
+    def from_name(cls, name: str) -> StatesErrorNameType:
+        error_name = _REVERSE_NAME_LOOKUP.get(name, None)
+        if error_name is None:
+            raise ValueError(f"Unknown ErrorName type, got: '{name}'.")
+        return cls(error_name.value)
+
+
+def _error_name(error_name: StatesErrorNameType) -> str:
+    return ASLLexer.literalNames[error_name.value][2:-2]
+
+
+def _reverse_error_name_lookup() -> Dict[str, StatesErrorNameType]:
+    lookup: Dict[str, StatesErrorNameType] = dict()
+    for error_name in StatesErrorNameType:
+        error_text: str = _error_name(error_name)
+        lookup[error_text] = error_name
+    return lookup
+
+
+_REVERSE_NAME_LOOKUP: Final[
+    Dict[str, StatesErrorNameType]
+] = _reverse_error_name_lookup()
diff --git a/moto/stepfunctions/parser/asl/component/common/flow/__init__.py b/moto/stepfunctions/parser/asl/component/common/flow/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/flow/end.py b/moto/stepfunctions/parser/asl/component/common/flow/end.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/flow/end.py
@@ -0,0 +1,9 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class End(Component):
+    def __init__(self, is_end: bool):
+        # Designates this state as a terminal state (ends the execution) if set to true.
+        self.is_end: Final[bool] = is_end
diff --git a/moto/stepfunctions/parser/asl/component/common/flow/next.py b/moto/stepfunctions/parser/asl/component/common/flow/next.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/flow/next.py
@@ -0,0 +1,11 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class Next(Component):
+    name: Final[str]
+
+    def __init__(self, name: str):
+        # The name of the next state that is run when the current state finishes.
+        self.name = name
diff --git a/moto/stepfunctions/parser/asl/component/common/flow/start_at.py b/moto/stepfunctions/parser/asl/component/common/flow/start_at.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/flow/start_at.py
@@ -0,0 +1,8 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class StartAt(Component):
+    def __init__(self, start_at_name: str):
+        self.start_at_name: Final[str] = start_at_name
diff --git a/moto/stepfunctions/parser/asl/component/common/parameters.py b/moto/stepfunctions/parser/asl/component/common/parameters.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/parameters.py
@@ -0,0 +1,15 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadtmpl.payload_tmpl import (
+    PayloadTmpl,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class Parameters(EvalComponent):
+    def __init__(self, payload_tmpl: PayloadTmpl):
+        self.payload_tmpl: Final[PayloadTmpl] = payload_tmpl
+
+    def _eval_body(self, env: Environment) -> None:
+        self.payload_tmpl.eval(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/common/path/__init__.py b/moto/stepfunctions/parser/asl/component/common/path/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/path/input_path.py b/moto/stepfunctions/parser/asl/component/common/path/input_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/path/input_path.py
@@ -0,0 +1,24 @@
+import copy
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class InputPath(EvalComponent):
+    DEFAULT_PATH: Final[str] = "$"
+
+    input_path_src: Final[Optional[str]]
+
+    def __init__(self, input_path_src: Optional[str]):
+        self.input_path_src = input_path_src
+
+    def _eval_body(self, env: Environment) -> None:
+        if self.input_path_src is None:
+            value = dict()
+        elif self.input_path_src == InputPath.DEFAULT_PATH:
+            value = env.inp
+        else:
+            value = JSONPathUtils.extract_json(self.input_path_src, env.inp)
+        env.stack.append(copy.deepcopy(value))
diff --git a/moto/stepfunctions/parser/asl/component/common/path/items_path.py b/moto/stepfunctions/parser/asl/component/common/path/items_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/path/items_path.py
@@ -0,0 +1,19 @@
+import copy
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class ItemsPath(EvalComponent):
+    DEFAULT_PATH: Final[str] = "$"
+
+    def __init__(self, items_path_src: str = DEFAULT_PATH):
+        self.items_path_src: Final[str] = items_path_src
+
+    def _eval_body(self, env: Environment) -> None:
+        if self.items_path_src != ItemsPath.DEFAULT_PATH:
+            value = copy.deepcopy(env.stack[-1])
+            value = JSONPathUtils.extract_json(self.items_path_src, value)
+            env.stack.append(value)
diff --git a/moto/stepfunctions/parser/asl/component/common/path/output_path.py b/moto/stepfunctions/parser/asl/component/common/path/output_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/path/output_path.py
@@ -0,0 +1,22 @@
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class OutputPath(EvalComponent):
+    DEFAULT_PATH: Final[str] = "$"
+
+    output_path: Final[Optional[str]]
+
+    def __init__(self, output_path: Optional[str]):
+        self.output_path = output_path
+
+    def _eval_body(self, env: Environment) -> None:
+        if self.output_path is None:
+            env.inp = dict()
+        else:
+            current_output = env.stack.pop()
+            state_output = JSONPathUtils.extract_json(self.output_path, current_output)
+            env.inp = state_output
diff --git a/moto/stepfunctions/parser/asl/component/common/path/result_path.py b/moto/stepfunctions/parser/asl/component/common/path/result_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/path/result_path.py
@@ -0,0 +1,33 @@
+import copy
+from typing import Final, Optional
+
+from jsonpath_ng import parse
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ResultPath(EvalComponent):
+    DEFAULT_PATH: Final[str] = "$"
+
+    result_path_src: Final[Optional[str]]
+
+    def __init__(self, result_path_src: Optional[str]):
+        self.result_path_src = result_path_src
+
+    def _eval_body(self, env: Environment) -> None:
+        state_input = copy.deepcopy(env.inp)
+
+        # Discard task output if there is one, and set the output ot be the state's input.
+        if self.result_path_src is None:
+            env.stack.clear()
+            env.stack.append(state_input)
+            return
+
+        # Transform the output with the input.
+        current_output = env.stack.pop()
+        result_expr = parse(self.result_path_src)
+        state_output = result_expr.update_or_create(
+            state_input, copy.deepcopy(current_output)
+        )
+        env.stack.append(state_output)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/__init__.py b/moto/stepfunctions/parser/asl/component/common/payload/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/__init__.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payload_value.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payload_value.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payload_value.py
@@ -0,0 +1,7 @@
+import abc
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+
+
+class PayloadValue(EvalComponent, abc.ABC):
+    ...
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadarr/__init__.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadarr/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadarr/payload_arr.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadarr/payload_arr.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadarr/payload_arr.py
@@ -0,0 +1,18 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payload_value import (
+    PayloadValue,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class PayloadArr(PayloadValue):
+    def __init__(self, payload_values: List[PayloadValue]):
+        self.payload_values: Final[List[PayloadValue]] = payload_values
+
+    def _eval_body(self, env: Environment) -> None:
+        arr = list()
+        for payload_value in self.payload_values:
+            payload_value.eval(env)
+            arr.append(env.stack.pop())
+        env.stack.append(arr)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/__init__.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding.py
@@ -0,0 +1,22 @@
+import abc
+from typing import Any, Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payload_value import (
+    PayloadValue,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class PayloadBinding(PayloadValue, abc.ABC):
+    def __init__(self, field: str):
+        self.field: Final[str] = field
+
+    @abc.abstractmethod
+    def _eval_val(self, env: Environment) -> Any:
+        ...
+
+    def _eval_body(self, env: Environment) -> None:
+        cnt: dict = env.stack.pop()
+        val = self._eval_val(env=env)
+        cnt[self.field] = val
+        env.stack.append(cnt)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_intrinsic_func.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_intrinsic_func.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_intrinsic_func.py
@@ -0,0 +1,27 @@
+from typing import Any, Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding import (
+    PayloadBinding,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.function import Function
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.parse.intrinsic.intrinsic_parser import (
+    IntrinsicParser,
+)
+
+
+class PayloadBindingIntrinsicFunc(PayloadBinding):
+    def __init__(self, field: str, intrinsic_func: str):
+        super().__init__(field=field)
+        self.src: Final[str] = intrinsic_func
+        self.function: Final[Function] = IntrinsicParser.parse(self.src)
+
+    @classmethod
+    def from_raw(cls, string_dollar: str, intrinsic_func: str):
+        field: str = string_dollar[:-2]
+        return cls(field=field, intrinsic_func=intrinsic_func)
+
+    def _eval_val(self, env: Environment) -> Any:
+        self.function.eval(env=env)
+        val = env.stack.pop()
+        return val
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_path.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_path.py
@@ -0,0 +1,49 @@
+from typing import Any, Final
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding import (
+    PayloadBinding,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class PayloadBindingPath(PayloadBinding):
+    def __init__(self, field: str, path: str):
+        super().__init__(field=field)
+        self.path: Final[str] = path
+
+    @classmethod
+    def from_raw(cls, string_dollar: str, string_path: str):
+        field: str = string_dollar[:-2]
+        return cls(field=field, path=string_path)
+
+    def _eval_val(self, env: Environment) -> Any:
+        inp = env.stack[-1]
+        try:
+            value = JSONPathUtils.extract_json(self.path, inp)
+        except RuntimeError:
+            failure_event = FailureEvent(
+                error_name=StatesErrorName(typ=StatesErrorNameType.StatesRuntime),
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=StatesErrorNameType.StatesRuntime.to_name(),
+                        cause=f"The JSONPath {self.path} specified for the field {self.field}.$ could not be found in the input {to_json_str(inp)}",
+                    )
+                ),
+            )
+            raise FailureEventException(failure_event=failure_event)
+        return value
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_path_context_obj.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_path_context_obj.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_path_context_obj.py
@@ -0,0 +1,30 @@
+from typing import Any, Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding import (
+    PayloadBinding,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class PayloadBindingPathContextObj(PayloadBinding):
+    def __init__(self, field: str, path_context_obj: str):
+        super().__init__(field=field)
+        self.path_context_obj: Final[str] = path_context_obj
+
+    @classmethod
+    def from_raw(cls, string_dollar: str, string_path_context_obj: str):
+        field: str = string_dollar[:-2]
+        path_context_obj: str = string_path_context_obj[1:]
+        return cls(field=field, path_context_obj=path_context_obj)
+
+    def _eval_val(self, env: Environment) -> Any:
+        if self.path_context_obj.endswith("Task.Token"):
+            task_token = env.context_object_manager.update_task_token()
+            env.callback_pool_manager.add(task_token)
+            value = task_token
+        else:
+            value = JSONPathUtils.extract_json(
+                self.path_context_obj, env.context_object_manager.context_object
+            )
+        return value
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_value.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_value.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadbinding/payload_binding_value.py
@@ -0,0 +1,20 @@
+from typing import Any, Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payload_value import (
+    PayloadValue,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding import (
+    PayloadBinding,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class PayloadBindingValue(PayloadBinding):
+    def __init__(self, field: str, value: PayloadValue):
+        super().__init__(field=field)
+        self.value: Final[PayloadValue] = value
+
+    def _eval_val(self, env: Environment) -> Any:
+        self.value.eval(env)
+        val: Any = env.stack.pop()
+        return val
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadtmpl/__init__.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadtmpl/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadtmpl/payload_tmpl.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadtmpl/payload_tmpl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadtmpl/payload_tmpl.py
@@ -0,0 +1,19 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payload_value import (
+    PayloadValue,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding import (
+    PayloadBinding,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class PayloadTmpl(PayloadValue):
+    def __init__(self, payload_bindings: List[PayloadBinding]):
+        self.payload_bindings: Final[List[PayloadBinding]] = payload_bindings
+
+    def _eval_body(self, env: Environment) -> None:
+        env.stack.append(dict())
+        for payload_binding in self.payload_bindings:
+            payload_binding.eval(env)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/__init__.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_bool.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_bool.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_bool.py
@@ -0,0 +1,10 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_lit import (
+    PayloadValueLit,
+)
+
+
+class PayloadValueBool(PayloadValueLit):
+    def __init__(self, val: bool):
+        self.val: Final[bool] = val
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_float.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_float.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_float.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_lit import (
+    PayloadValueLit,
+)
+
+
+class PayloadValueFloat(PayloadValueLit):
+    val: float
+
+    def __init__(self, val: float):
+        super().__init__(val=val)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_int.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_int.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_int.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_lit import (
+    PayloadValueLit,
+)
+
+
+class PayloadValueInt(PayloadValueLit):
+    val: int
+
+    def __init__(self, val: int):
+        super().__init__(val=val)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_lit.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_lit.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_lit.py
@@ -0,0 +1,17 @@
+import abc
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payload_value import (
+    PayloadValue,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class PayloadValueLit(PayloadValue, abc.ABC):
+    val: Any
+
+    def __init__(self, val: Any):
+        self.val: Any = val
+
+    def _eval_body(self, env: Environment) -> None:
+        env.stack.append(self.val)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_null.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_null.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_null.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_lit import (
+    PayloadValueLit,
+)
+
+
+class PayloadValueNull(PayloadValueLit):
+    val: None
+
+    def __init__(self):
+        super().__init__(val=None)
diff --git a/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_str.py b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_str.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/payload/payloadvalue/payloadvaluelit/payload_value_str.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_lit import (
+    PayloadValueLit,
+)
+
+
+class PayloadValueStr(PayloadValueLit):
+    val: str
+
+    def __init__(self, val: str):
+        super().__init__(val=val)
diff --git a/moto/stepfunctions/parser/asl/component/common/result_selector.py b/moto/stepfunctions/parser/asl/component/common/result_selector.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/result_selector.py
@@ -0,0 +1,13 @@
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadtmpl.payload_tmpl import (
+    PayloadTmpl,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ResultSelector(EvalComponent):
+    def __init__(self, payload_tmpl: PayloadTmpl):
+        self.payload_tmpl: PayloadTmpl = payload_tmpl
+
+    def _eval_body(self, env: Environment) -> None:
+        self.payload_tmpl.eval(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/__init__.py b/moto/stepfunctions/parser/asl/component/common/retry/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/backoff_rate_decl.py b/moto/stepfunctions/parser/asl/component/common/retry/backoff_rate_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/backoff_rate_decl.py
@@ -0,0 +1,20 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class BackoffRateDecl(Component):
+    """
+    "BackoffRate": a number which is the multiplier that increases the retry interval on each
+    attempt (default: 2.0). The value of BackoffRate MUST be greater than or equal to 1.0.
+    """
+
+    DEFAULT_RATE: Final[float] = 2.0
+    MIN_RATE: Final[float] = 1.0
+
+    def __init__(self, rate: float = DEFAULT_RATE):
+        if rate < self.MIN_RATE:
+            raise ValueError(
+                f"The value of BackoffRate MUST be greater than or equal to 1.0, got '{rate}'."
+            )
+        self.rate: Final[float] = rate
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/interval_seconds_decl.py b/moto/stepfunctions/parser/asl/component/common/retry/interval_seconds_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/interval_seconds_decl.py
@@ -0,0 +1,19 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class IntervalSecondsDecl(Component):
+    """
+    IntervalSeconds: its value MUST be a positive integer, representing the number of seconds before the
+    first retry attempt (default value: 1);
+    """
+
+    DEFAULT_SECONDS: Final[int] = 1
+
+    def __init__(self, seconds: int = DEFAULT_SECONDS):
+        if seconds < 0:
+            raise ValueError(
+                f"IntervalSeconds value must be a positive integer, found '{seconds}'."
+            )
+        self.seconds: Final[int] = seconds
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/max_attempts_decl.py b/moto/stepfunctions/parser/asl/component/common/retry/max_attempts_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/max_attempts_decl.py
@@ -0,0 +1,19 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class MaxAttemptsDecl(Component):
+    """
+    "MaxAttempts": value MUST be a non-negative integer, representing the maximum number
+    of retry attempts (default: 3)
+    """
+
+    DEFAULT_ATTEMPTS: Final[int] = 3
+
+    def __init__(self, attempts: int = DEFAULT_ATTEMPTS):
+        if attempts < 0:
+            raise ValueError(
+                f"MaxAttempts value MUST be a non-negative integer, got '{attempts}'."
+            )
+        self.attempts: Final[int] = attempts
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/retrier_decl.py b/moto/stepfunctions/parser/asl/component/common/retry/retrier_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/retrier_decl.py
@@ -0,0 +1,88 @@
+from __future__ import annotations
+
+import time
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.error_name.error_equals_decl import (
+    ErrorEqualsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.backoff_rate_decl import (
+    BackoffRateDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.interval_seconds_decl import (
+    IntervalSecondsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.max_attempts_decl import (
+    MaxAttemptsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retrier_outcome import (
+    RetrierOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retrier_props import (
+    RetrierProps,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class RetrierDecl(EvalComponent):
+    def __init__(
+        self,
+        error_equals: ErrorEqualsDecl,
+        interval_seconds: Optional[IntervalSecondsDecl] = None,
+        max_attempts: Optional[MaxAttemptsDecl] = None,
+        backoff_rate: Optional[BackoffRateDecl] = None,
+    ):
+        self.error_equals: Final[ErrorEqualsDecl] = error_equals
+        self.interval_seconds: Final[IntervalSecondsDecl] = (
+            interval_seconds or IntervalSecondsDecl()
+        )
+        self.max_attempts: Final[MaxAttemptsDecl] = max_attempts or MaxAttemptsDecl()
+        self.backoff_rate: Final[BackoffRateDecl] = backoff_rate or BackoffRateDecl()
+
+        self._attempts_counter: int = 0
+        self._next_interval_seconds: float = self.interval_seconds.seconds
+
+    @classmethod
+    def from_retrier_props(cls, props: RetrierProps) -> RetrierDecl:
+        return cls(
+            error_equals=props.get(
+                typ=ErrorEqualsDecl,
+                raise_on_missing=ValueError(
+                    f"Missing ErrorEquals declaration for Retrier declaration, in props '{props}'."
+                ),
+            ),
+            interval_seconds=props.get(IntervalSecondsDecl),
+            max_attempts=props.get(MaxAttemptsDecl),
+            backoff_rate=props.get(BackoffRateDecl),
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        # When a state reports an error, the interpreter scans through the Retriers and, when the Error Name appears
+        # in the value of a Retrier’s "ErrorEquals" field, implements the retry policy described in that Retrier.
+
+        self.error_equals.eval(env)
+        res: bool = env.stack.pop()
+
+        # This Retrier does not match
+        if not res:
+            env.stack.append(RetrierOutcome.Skipped)
+            return
+
+        # This is a matching Retrier, but was exhausted.
+        self._attempts_counter += 1
+        if self._attempts_counter > self.max_attempts.attempts:
+            env.stack.append(RetrierOutcome.Failed)
+            return
+
+        # Execute the Retrier logic.
+        # TODO: continue after interrupts?
+        time.sleep(self._next_interval_seconds)
+
+        self._next_interval_seconds = (
+            self._attempts_counter
+            * self.interval_seconds.seconds
+            * self.backoff_rate.rate
+        )
+
+        env.stack.append(RetrierOutcome.Executed)
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/retrier_outcome.py b/moto/stepfunctions/parser/asl/component/common/retry/retrier_outcome.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/retrier_outcome.py
@@ -0,0 +1,7 @@
+import enum
+
+
+class RetrierOutcome(enum.Enum):
+    Executed = 0
+    Failed = 1
+    Skipped = 2
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/retrier_props.py b/moto/stepfunctions/parser/asl/component/common/retry/retrier_props.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/retrier_props.py
@@ -0,0 +1,5 @@
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+
+class RetrierProps(TypedProps):
+    pass
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/retry_decl.py b/moto/stepfunctions/parser/asl/component/common/retry/retry_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/retry_decl.py
@@ -0,0 +1,40 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retrier_decl import (
+    RetrierDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retrier_outcome import (
+    RetrierOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retry_outcome import (
+    RetryOutcome,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class RetryDecl(EvalComponent):
+    def __init__(self, retriers: List[RetrierDecl]):
+        self.retriers: Final[List[RetrierDecl]] = retriers
+
+    def _eval_body(self, env: Environment) -> None:
+        error_name: ErrorName = env.stack.pop()
+
+        for retrier in self.retriers:
+            env.stack.append(error_name)
+            retrier.eval(env)
+            outcome: RetrierOutcome = env.stack.pop()
+
+            if outcome == RetrierOutcome.Skipped:
+                continue
+            elif outcome == RetrierOutcome.Executed:
+                env.stack.append(RetryOutcome.CanRetry)
+                return
+            elif outcome == RetrierOutcome.Failed:
+                env.stack.append(RetryOutcome.CannotRetry)
+                return
+
+        env.stack.append(RetryOutcome.NoRetrier)
diff --git a/moto/stepfunctions/parser/asl/component/common/retry/retry_outcome.py b/moto/stepfunctions/parser/asl/component/common/retry/retry_outcome.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/retry/retry_outcome.py
@@ -0,0 +1,7 @@
+from enum import Enum
+
+
+class RetryOutcome(Enum):
+    CanRetry = 0
+    CannotRetry = 1
+    NoRetrier = 2
diff --git a/moto/stepfunctions/parser/asl/component/common/timeouts/__init__.py b/moto/stepfunctions/parser/asl/component/common/timeouts/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/common/timeouts/heartbeat.py b/moto/stepfunctions/parser/asl/component/common/timeouts/heartbeat.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/timeouts/heartbeat.py
@@ -0,0 +1,46 @@
+import abc
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class Heartbeat(EvalComponent, abc.ABC):
+    @abc.abstractmethod
+    def _eval_seconds(self, env: Environment) -> int:
+        ...
+
+    def _eval_body(self, env: Environment) -> None:
+        seconds = self._eval_seconds(env=env)
+        env.stack.append(seconds)
+
+
+class HeartbeatSeconds(Heartbeat):
+    def __init__(self, heartbeat_seconds: int):
+        if not isinstance(heartbeat_seconds, int) and heartbeat_seconds <= 0:
+            raise ValueError(
+                f"Expected non-negative integer for HeartbeatSeconds, got '{heartbeat_seconds}' instead."
+            )
+        self.heartbeat_seconds: Final[int] = heartbeat_seconds
+
+    def _eval_seconds(self, env: Environment) -> int:
+        return self.heartbeat_seconds
+
+
+class HeartbeatSecondsPath(Heartbeat):
+    def __init__(self, path: str):
+        self.path: Final[str] = path
+
+    @classmethod
+    def from_raw(cls, path: str):
+        return cls(path=path)
+
+    def _eval_seconds(self, env: Environment) -> int:
+        inp = env.stack[-1]
+        seconds = JSONPathUtils.extract_json(self.path, inp)
+        if not isinstance(seconds, int) and seconds <= 0:
+            raise ValueError(
+                f"Expected non-negative integer for HeartbeatSecondsPath, got '{seconds}' instead."
+            )
+        return seconds
diff --git a/moto/stepfunctions/parser/asl/component/common/timeouts/timeout.py b/moto/stepfunctions/parser/asl/component/common/timeouts/timeout.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/timeouts/timeout.py
@@ -0,0 +1,65 @@
+import abc
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class Timeout(EvalComponent, abc.ABC):
+    @abc.abstractmethod
+    def is_default_value(self) -> bool:
+        ...
+
+    @abc.abstractmethod
+    def _eval_seconds(self, env: Environment) -> int:
+        ...
+
+    def _eval_body(self, env: Environment) -> None:
+        seconds = self._eval_seconds(env=env)
+        env.stack.append(seconds)
+
+
+class TimeoutSeconds(Timeout):
+    DEFAULT_TIMEOUT_SECONDS: Final[int] = 99999999
+
+    def __init__(self, timeout_seconds: int, is_default: Optional[bool] = None):
+        if not isinstance(timeout_seconds, int) and timeout_seconds <= 0:
+            raise ValueError(
+                f"Expected non-negative integer for TimeoutSeconds, got '{timeout_seconds}' instead."
+            )
+        self.timeout_seconds: Final[int] = timeout_seconds
+        self.is_default: Optional[bool] = is_default
+
+    def is_default_value(self) -> bool:
+        if self.is_default is not None:
+            return self.is_default
+        return self.timeout_seconds == self.DEFAULT_TIMEOUT_SECONDS
+
+    def _eval_seconds(self, env: Environment) -> int:
+        return self.timeout_seconds
+
+
+class TimeoutSecondsPath(Timeout):
+    def __init__(self, path: str):
+        self.path: Final[str] = path
+
+    @classmethod
+    def from_raw(cls, path: str):
+        return cls(path=path)
+
+    def is_default_value(self) -> bool:
+        return False
+
+    def _eval_seconds(self, env: Environment) -> int:
+        inp = env.stack[-1]
+        seconds = JSONPathUtils.extract_json(self.path, inp)
+        if not isinstance(seconds, int) and seconds <= 0:
+            raise ValueError(
+                f"Expected non-negative integer for TimeoutSecondsPath, got '{seconds}' instead."
+            )
+        return seconds
+
+
+class EvalTimeoutError(TimeoutError):
+    pass
diff --git a/moto/stepfunctions/parser/asl/component/common/version.py b/moto/stepfunctions/parser/asl/component/common/version.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/common/version.py
@@ -0,0 +1,17 @@
+from typing import Final, Set
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class Version(Component):
+    _SUPPORTED_VERSIONS: Final[Set[str]] = {"1.0"}
+
+    version: Final[str]
+
+    def __init__(self, version: str):
+        if version not in self._SUPPORTED_VERSIONS:
+            raise ValueError(
+                f"Version value '{version}' is not accepted. Supported Versions: {list(self._SUPPORTED_VERSIONS)}"
+            )
+
+        self.version = version
diff --git a/moto/stepfunctions/parser/asl/component/component.py b/moto/stepfunctions/parser/asl/component/component.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/component.py
@@ -0,0 +1,9 @@
+import abc
+
+
+class Component(abc.ABC):
+    def __str__(self):
+        return f"({self.__class__.__name__}| {vars(self)}"
+
+    def __repr__(self):
+        return str(self)
diff --git a/moto/stepfunctions/parser/asl/component/eval_component.py b/moto/stepfunctions/parser/asl/component/eval_component.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/eval_component.py
@@ -0,0 +1,70 @@
+import abc
+import logging
+
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+LOG = logging.getLogger(__name__)
+
+
+class EvalComponent(Component, abc.ABC):
+    def _log_evaluation_step(self, subject: str = "Generic") -> None:
+        LOG.debug(
+            f"[ASL] [{subject.lower()[:4]}] [{self.__class__.__name__}]: '{repr(self)}'"
+        )
+
+    def _log_failure_event_exception(
+        self, failure_event_exception: FailureEventException
+    ) -> None:
+        error_log_parts = ["Exception=FailureEventException"]
+
+        error_name = failure_event_exception.failure_event.error_name
+        if error_name:
+            error_log_parts.append(f"Error={error_name.error_name}")
+
+        event_details = failure_event_exception.failure_event.event_details
+        if event_details:
+            error_log_parts.append(f"Details={to_json_str(event_details)}")
+
+        error_log = ", ".join(error_log_parts)
+        component_repr = repr(self)
+        LOG.error(f"{error_log} at '{component_repr}'")
+
+    def _log_exception(self, exception: Exception) -> None:
+        exception_name = exception.__class__.__name__
+
+        error_log_parts = [f"Exception={exception_name}"]
+
+        exception_body = list(exception.args)
+        if exception_body:
+            error_log_parts.append(f"Details={exception_body}")
+        else:
+            error_log_parts.append("Details=None-Available")
+
+        error_log = ", ".join(error_log_parts)
+        component_repr = repr(self)
+        LOG.error(f"{error_log} at '{component_repr}'")
+
+    def eval(self, env: Environment) -> None:
+        if env.is_running():
+            self._log_evaluation_step("Computing")
+            try:
+                self._eval_body(env)
+            except FailureEventException as failure_event_exception:
+                self._log_failure_event_exception(
+                    failure_event_exception=failure_event_exception
+                )
+                raise failure_event_exception
+            except Exception as exception:
+                self._log_exception(exception=exception)
+                raise exception
+        else:
+            self._log_evaluation_step("Pruning")
+
+    @abc.abstractmethod
+    def _eval_body(self, env: Environment) -> None:
+        raise NotImplementedError()
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument.py
@@ -0,0 +1,15 @@
+import abc
+from typing import Any, Optional
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class FunctionArgument(EvalComponent, abc.ABC):
+    _value: Optional[Any]
+
+    def __init__(self, value: Any = None):
+        self._value = value
+
+    def _eval_body(self, env: Environment) -> None:
+        env.stack.append(self._value)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_bool.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_bool.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_bool.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+
+
+class FunctionArgumentBool(FunctionArgument):
+    _value: bool
+
+    def __init__(self, boolean: bool):
+        super().__init__(value=boolean)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_context_path.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_context_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_context_path.py
@@ -0,0 +1,19 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class FunctionArgumentContextPath(FunctionArgument):
+    _value: str
+
+    def __init__(self, json_path: str):
+        super().__init__()
+        self._json_path: str = json_path
+
+    def _eval_body(self, env: Environment) -> None:
+        self._value = JSONPathUtils.extract_json(
+            self._json_path, env.context_object_manager.context_object
+        )
+        super()._eval_body(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_float.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_float.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_float.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+
+
+class FunctionArgumentFloat(FunctionArgument):
+    _value: float
+
+    def __init__(self, number: float):
+        super().__init__(value=number)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_function.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_function.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_function.py
@@ -0,0 +1,18 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.function import Function
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class FunctionArgumentFunction(FunctionArgument):
+    def __init__(self, function: Function):
+        super().__init__()
+        self.function: Final[Function] = function
+
+    def _eval_body(self, env: Environment) -> None:
+        self.function.eval(env=env)
+        self._value = env.stack.pop()
+        super()._eval_body(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_int.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_int.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_int.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+
+
+class FunctionArgumentInt(FunctionArgument):
+    _value: int
+
+    def __init__(self, integer: int):
+        super().__init__(value=integer)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_json_path.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_json_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_json_path.py
@@ -0,0 +1,18 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class FunctionArgumentJsonPath(FunctionArgument):
+    _value: str
+
+    def __init__(self, json_path: str):
+        super().__init__()
+        self._json_path: str = json_path
+
+    def _eval_body(self, env: Environment) -> None:
+        inp = env.stack[-1]
+        self._value = JSONPathUtils.extract_json(self._json_path, inp)
+        super()._eval_body(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_list.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_list.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_list.py
@@ -0,0 +1,20 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class FunctionArgumentList(EvalComponent):
+    def __init__(self, arg_list: List[FunctionArgument]):
+        self.arg_list: Final[List[FunctionArgument]] = arg_list
+        self.size: Final[int] = len(arg_list)
+
+    def _eval_body(self, env: Environment) -> None:
+        values = list()
+        for arg in self.arg_list:
+            arg.eval(env=env)
+            values.append(env.stack.pop())
+        env.stack.append(values)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_string.py b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_string.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/argument/function_argument_string.py
@@ -0,0 +1,10 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+
+
+class FunctionArgumentString(FunctionArgument):
+    _value: str
+
+    def __init__(self, string: str):
+        super().__init__(value=string)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/component.py b/moto/stepfunctions/parser/asl/component/intrinsic/component.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/component.py
@@ -0,0 +1,11 @@
+import abc
+
+
+class Component(abc.ABC):
+    # TODO.
+    def __str__(self):
+        return str(self.__dict__)
+
+    # TODO.
+    def __repr__(self):
+        return self.__str__()
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/function.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/function.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/function.py
@@ -0,0 +1,18 @@
+import abc
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.function_name import (
+    FunctionName,
+)
+
+
+class Function(EvalComponent, abc.ABC):
+    name: FunctionName
+
+    def __init__(self, name: FunctionName, arg_list: FunctionArgumentList):
+        self.name = name
+        self.arg_list: Final[FunctionArgumentList] = arg_list
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array.py
@@ -0,0 +1,28 @@
+from typing import Any, List
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class Array(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.Array),
+            arg_list=arg_list,
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        values: List[Any] = env.stack.pop()
+        env.stack.append(values)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_contains.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_contains.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_contains.py
@@ -0,0 +1,54 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ArrayContains(StatesFunction):
+    # Determines if a specific value is present in an array.
+    #
+    # For example:
+    # With input
+    # {
+    #    "inputArray": [1,2,3,4,5,6,7,8,9],
+    #    "lookingFor": 5
+    # }
+    #
+    # The call:
+    # States.ArrayContains($.inputArray, $.lookingFor)
+    #
+    # Returns:
+    # true
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.ArrayContains
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 2:
+            raise ValueError(
+                f"Expected 2 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        array = args[0]
+        value = args[1]
+        if not isinstance(array, list):
+            raise TypeError(
+                f"Expected an array type as first argument, but got {array}."
+            )
+        contains = value in array
+        env.stack.append(contains)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_get_item.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_get_item.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_get_item.py
@@ -0,0 +1,56 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ArrayGetItem(StatesFunction):
+    # Returns a specified index's value.
+    #
+    # For example:
+    # With input
+    # {
+    #    "inputArray": [1,2,3,4,5,6,7,8,9],
+    #    "index": 5
+    # }
+    #
+    # The call
+    # States.ArrayGetItem($.inputArray, $.index)
+    #
+    # Returns
+    # 6
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.ArrayGetItem
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 2:
+            raise ValueError(
+                f"Expected 2 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        index = args.pop()
+        if not isinstance(index, int):
+            raise TypeError(f"Expected an integer index value, but got '{index}'.")
+
+        array = args.pop()
+        if not isinstance(array, list):
+            raise TypeError(f"Expected an array type, but got '{array}'.")
+
+        item = array[index]
+        env.stack.append(item)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_length.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_length.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_length.py
@@ -0,0 +1,51 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ArrayLength(StatesFunction):
+    # Returns the length of the array.
+    #
+    # For example:
+    # With input
+    # {
+    #    "inputArray": [1,2,3,4,5,6,7,8,9]
+    # }
+    #
+    # The call
+    # States.ArrayLength($.inputArray)
+    #
+    # Returns
+    # 9
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.ArrayLength
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        array = args.pop()
+        if not isinstance(array, list):
+            raise TypeError(f"Expected an array type, but got '{array}'.")
+
+        length = len(array)
+        env.stack.append(length)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_partition.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_partition.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_partition.py
@@ -0,0 +1,72 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ArrayPartition(StatesFunction):
+    # Partitions the input array.
+    #
+    # For example:
+    # With input
+    # {
+    #   "inputArray": [1, 2, 3, 4, 5, 6, 7, 8, 9]
+    # }
+    #
+    # The call
+    # States.ArrayPartition($.inputArray,4)
+    #
+    # Returns
+    # [ [1,2,3,4], [5,6,7,8], [9]]
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.ArrayPartition
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 2:
+            raise ValueError(
+                f"Expected 2 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        chunk_size = args.pop()
+        if not isinstance(chunk_size, (int, float)):
+            raise TypeError(
+                f"Expected an integer value as chunk_size, but got {chunk_size}."
+            )
+        chunk_size = round(chunk_size)
+        if chunk_size < 0:
+            raise ValueError(
+                f"Expected a non-zero, positive integer as chuck_size, but got {chunk_size}."
+            )
+
+        array = args.pop()
+        if not isinstance(array, list):
+            raise TypeError(
+                f"Expected an array type as first argument, but got {array}."
+            )
+
+        chunks = self._to_chunks(array=array, chunk_size=chunk_size)
+        env.stack.append(chunks)
+
+    @staticmethod
+    def _to_chunks(array: list, chunk_size: int):
+        chunks = list()
+        for i in range(0, len(array), chunk_size):
+            chunks.append(array[i : i + chunk_size])
+        return chunks
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_range.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_range.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_range.py
@@ -0,0 +1,62 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ArrayRange(StatesFunction):
+    # Creates a new array containing a specific range of elements.
+    #
+    # For example:
+    # The call
+    # States.ArrayRange(1, 9, 2)
+    #
+    # Returns
+    # [1,3,5,7,9]
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.ArrayRange
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 3:
+            raise ValueError(
+                f"Expected 3 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        range_vals = env.stack.pop()
+
+        for range_val in range_vals:
+            if not isinstance(range_val, (int, float)):
+                raise TypeError(
+                    f"Expected 3 integer arguments for function type '{type(self)}', but got: '{range_vals}'."
+                )
+        first = round(range_vals[0])
+        last = round(range_vals[1])
+        step = round(range_vals[2])
+
+        if step <= 0:
+            raise ValueError(
+                f"Expected step argument to be non negative, but got: '{step}'."
+            )
+
+        array = list(range(first, last + 1, step))
+
+        if len(array) > 1000:
+            raise ValueError(
+                f"Arrays cannot contain more than 1000 items, size: {len(array)}."
+            )
+
+        env.stack.append(array)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_unique.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_unique.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/array/array_unique.py
@@ -0,0 +1,56 @@
+from collections import OrderedDict
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ArrayUnique(StatesFunction):
+    # Removes duplicate values from an array and returns an array containing only unique elements
+    #
+    # For example:
+    # With input
+    # {
+    #   "inputArray": [1,2,3,3,3,3,3,3,4]
+    # }
+    #
+    # The call
+    # States.ArrayUnique($.inputArray)
+    #
+    # Returns
+    # [1,2,3,4]
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.ArrayUnique
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        array = args.pop()
+        if not isinstance(array, list):
+            raise TypeError(f"Expected an array type, but got '{array}'.")
+
+        # Remove duplicates through an ordered set, in this
+        # case we consider they key set of an ordered dict.
+        items_odict = OrderedDict.fromkeys(array).keys()
+        unique_array = list(items_odict)
+        env.stack.append(unique_array)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/base_64_decode.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/base_64_decode.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/base_64_decode.py
@@ -0,0 +1,62 @@
+import base64
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class Base64Decode(StatesFunction):
+    # Encodes data based on MIME Base64 encoding scheme.
+    #
+    # For example:
+    # With input
+    # {
+    #   "input": "Data to encode"
+    # }
+    #
+    # The call
+    # "base64.$": "States.Base64Encode($.input)"
+    #
+    # Returns
+    # {"base64": "RGF0YSB0byBlbmNvZGU="}
+
+    MAX_INPUT_CHAR_LEN: Final[int] = 10_000
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.Base64Decode
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        base64_string: str = args.pop()
+        if len(base64_string) > self.MAX_INPUT_CHAR_LEN:
+            raise ValueError(
+                f"Maximum input string for function type '{type(self)}' "
+                f"is '{self.MAX_INPUT_CHAR_LEN}', but got '{len(base64_string)}'."
+            )
+
+        base64_string_bytes = base64_string.encode("ascii")
+        string_bytes = base64.b64decode(base64_string_bytes)
+        string = string_bytes.decode("ascii")
+        env.stack.append(string)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/base_64_encode.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/base_64_encode.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/encoding_decoding/base_64_encode.py
@@ -0,0 +1,62 @@
+import base64
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class Base64Encode(StatesFunction):
+    # Decodes data based on MIME Base64 encoding scheme.
+    #
+    # For example:
+    # With input
+    # {
+    #   "base64": "RGF0YSB0byBlbmNvZGU="
+    # }
+    #
+    # The call
+    # "data.$": "States.Base64Decode($.base64)"
+    #
+    # Returns
+    # {"data": "Decoded data"}
+
+    MAX_INPUT_CHAR_LEN: Final[int] = 10_000
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.Base64Encode
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        string: str = args.pop()
+        if len(string) > self.MAX_INPUT_CHAR_LEN:
+            raise ValueError(
+                f"Maximum input string for function type '{type(self)}' "
+                f"is '{self.MAX_INPUT_CHAR_LEN}', but got '{len(string)}'."
+            )
+
+        string_bytes = string.encode("ascii")
+        string_base64_bytes = base64.b64encode(string_bytes)
+        base64_string = string_base64_bytes.decode("ascii")
+        env.stack.append(base64_string)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/factory.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/factory.py
@@ -0,0 +1,107 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.array import (
+    array,
+    array_contains,
+    array_get_item,
+    array_length,
+    array_partition,
+    array_range,
+    array_unique,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.encoding_decoding import (
+    base_64_decode,
+    base_64_encode,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.generic import (
+    string_format,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.hash_calculations import (
+    hash_func,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.json_manipulation import (
+    json_merge,
+    json_to_string,
+    string_to_json,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.math_operations import (
+    math_add,
+    math_random,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.string_operations import (
+    string_split,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.unique_id_generation import (
+    uuid,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+
+
+# TODO: could use reflection on StatesFunctionNameType values.
+class StatesFunctionFactory:
+    @staticmethod
+    def from_name(
+        func_name: StatesFunctionName, arg_list: FunctionArgumentList
+    ) -> StatesFunction:
+        if func_name.function_type == StatesFunctionNameType.Array:
+            return array.Array(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.ArrayPartition:
+            return array_partition.ArrayPartition(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.ArrayContains:
+            return array_contains.ArrayContains(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.ArrayRange:
+            return array_range.ArrayRange(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.ArrayGetItem:
+            return array_get_item.ArrayGetItem(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.ArrayLength:
+            return array_length.ArrayLength(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.ArrayUnique:
+            return array_unique.ArrayUnique(arg_list=arg_list)
+
+        # JSON Manipulation
+        if func_name.function_type == StatesFunctionNameType.JsonToString:
+            return json_to_string.JsonToString(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.StringToJson:
+            return string_to_json.StringToJson(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.JsonMerge:
+            return json_merge.JsonMerge(arg_list=arg_list)
+
+        # Unique Id Generation.
+        if func_name.function_type == StatesFunctionNameType.UUID:
+            return uuid.UUID(arg_list=arg_list)
+
+        # String Operations.
+        if func_name.function_type == StatesFunctionNameType.StringSplit:
+            return string_split.StringSplit(arg_list=arg_list)
+
+        # Hash Calculations.
+        if func_name.function_type == StatesFunctionNameType.Hash:
+            return hash_func.HashFunc(arg_list=arg_list)
+
+        # Encoding and Decoding.
+        if func_name.function_type == StatesFunctionNameType.Base64Encode:
+            return base_64_encode.Base64Encode(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.Base64Decode:
+            return base_64_decode.Base64Decode(arg_list=arg_list)
+
+        # Math Operations.
+        if func_name.function_type == StatesFunctionNameType.MathRandom:
+            return math_random.MathRandom(arg_list=arg_list)
+        if func_name.function_type == StatesFunctionNameType.MathAdd:
+            return math_add.MathAdd(arg_list=arg_list)
+
+        # Generic.
+        if func_name.function_type == StatesFunctionNameType.Format:
+            return string_format.StringFormat(arg_list=arg_list)
+
+        # Unsupported.
+        raise NotImplementedError(func_name.function_type)  # noqa
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/generic/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/generic/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/generic/string_format.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/generic/string_format.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/generic/string_format.py
@@ -0,0 +1,95 @@
+import json
+from typing import Any, Final, List
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_string import (
+    FunctionArgumentString,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StringFormat(StatesFunction):
+    # It constructs a string from both literal and interpolated values. This function takes one or more arguments.
+    # The value of the first argument must be a string, and may include zero or more instances of the character
+    # sequence {}. The interpreter returns the string defined in the first argument with each {} replaced by the value
+    # of the positionally-corresponding argument in the Intrinsic invocation.
+    #
+    # For example:
+    # With input
+    # {
+    #  "name": "Arnav",
+    #  "template": "Hello, my name is {}."
+    # }
+    #
+    # Calls
+    # States.Format('Hello, my name is {}.', $.name)
+    # States.Format($.template, $.name)
+    #
+    # Return
+    # Hello, my name is Arnav.
+    _DELIMITER: Final[str] = "{}"
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.Format),
+            arg_list=arg_list,
+        )
+        if arg_list.size == 0:
+            raise ValueError(
+                f"Expected at least 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+        if not isinstance(arg_list.arg_list[0], FunctionArgumentString):
+            raise ValueError(
+                f"Expected the first argument for function type '{type(self)}' to be a string, but got: '{arg_list.arg_list[0]}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        # TODO: investigate behaviour for incorrect number of arguments in string format.
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        string_format: str = args[0]
+        values: List[Any] = args[1:]
+
+        values_str_repr = map(self._to_str_repr, values)
+        string_result = string_format.format(*values_str_repr)
+
+        env.stack.append(string_result)
+
+    @staticmethod
+    def _to_str_repr(value: Any) -> str:
+        # Converts a value or object to a string representation compatible with sfn.
+        # For example:
+        # Input object
+        # {
+        #   "Arg1": 1,
+        #   "Arg2": []
+        # }
+        # Is mapped to the string
+        # {Arg1=1, Arg2=[]}
+
+        if isinstance(value, str):
+            return value
+        elif isinstance(value, list):
+            value_parts: List[str] = list(map(StringFormat._to_str_repr, value))
+            return f"[{', '.join(value_parts)}]"
+        elif isinstance(value, dict):
+            dict_items = list()
+            for d_key, d_value in value.items():
+                d_value_lit = StringFormat._to_str_repr(d_value)
+                dict_items.append(f"{d_key}={d_value_lit}")
+            return f"{{{', '.join(dict_items)}}}"
+        else:
+            # Return json representation of terminal value.
+            return json.dumps(value)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/hash_algorithm.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/hash_algorithm.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/hash_algorithm.py
@@ -0,0 +1,9 @@
+import enum
+
+
+class HashAlgorithm(enum.Enum):
+    MD5 = "MD5"
+    SHA_1 = "SHA-1"
+    SHA_256 = "SHA-256"
+    SHA_384 = "SHA-384"
+    SHA_512 = "SHA-512"
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/hash_func.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/hash_func.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/hash_calculations/hash_func.py
@@ -0,0 +1,75 @@
+import hashlib
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.hash_calculations.hash_algorithm import (
+    HashAlgorithm,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class HashFunc(StatesFunction):
+    MAX_INPUT_CHAR_LEN: Final[int] = 10_000
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.Hash),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 2:
+            raise ValueError(
+                f"Expected 2 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    @staticmethod
+    def _hash_inp_with_alg(inp: str, alg: HashAlgorithm) -> str:
+        inp_enc = inp.encode()
+        hash_inp = None
+        if alg == HashAlgorithm.MD5:
+            hash_inp = hashlib.md5(inp_enc)
+        if alg == HashAlgorithm.SHA_1:
+            hash_inp = hashlib.sha1(inp_enc)
+        elif alg == HashAlgorithm.SHA_256:
+            hash_inp = hashlib.sha256(inp_enc)
+        elif alg == HashAlgorithm.SHA_384:
+            hash_inp = hashlib.sha384(inp_enc)
+        elif alg == HashAlgorithm.SHA_512:
+            hash_inp = hashlib.sha512(inp_enc)
+        hash_value: str = hash_inp.hexdigest()
+        return hash_value
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        algorithm = args.pop()
+        try:
+            hash_algorithm = HashAlgorithm(algorithm)
+        except Exception:
+            raise ValueError(f"Unknown hash function '{algorithm}'.")
+
+        input_data = args.pop()
+        if not isinstance(input_data, str):
+            raise TypeError(
+                f"Expected string type as input data for function type '{type(self)}', but got: '{input_data}'."
+            )
+
+        if len(input_data) > self.MAX_INPUT_CHAR_LEN:
+            raise ValueError(
+                f"Maximum character input length for  for function type '{type(self)}' "
+                f"is '{self.MAX_INPUT_CHAR_LEN}', but got '{len(input_data)}'."
+            )
+
+        res = self._hash_inp_with_alg(input_data, hash_algorithm)
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/json_merge.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/json_merge.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/json_merge.py
@@ -0,0 +1,93 @@
+import copy
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class JsonMerge(StatesFunction):
+    # Merges two JSON objects into a single object
+    #
+    # For example:
+    # With input
+    # {
+    #    "json1": { "a": {"a1": 1, "a2": 2}, "b": 2, },
+    #    "json2": { "a": {"a3": 1, "a4": 2}, "c": 3 }
+    # }
+    #
+    # Call
+    # "output.$": "States.JsonMerge($.json1, $.json2, false)"
+    #
+    # Returns
+    # {
+    #    "output": {
+    #       "a": {"a3": 1, "a4": 2},
+    #       "b": 2,
+    #       "c": 3
+    #    }
+    # }
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.JsonMerge
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 3:
+            raise ValueError(
+                f"Expected 3 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    @staticmethod
+    def _validate_is_deep_merge_argument(is_deep_merge: Any) -> None:
+        if not isinstance(is_deep_merge, bool):
+            raise TypeError(
+                f"Expected boolean value for deep merge mode, but got: '{is_deep_merge}'."
+            )
+        if is_deep_merge:
+            # This is AWS's limitation, not LocalStack's.
+            raise NotImplementedError(
+                "Currently, Step Functions only supports the shallow merging mode; "
+                "therefore, you must specify the boolean value as false."
+            )
+
+    @staticmethod
+    def _validate_merge_argument(argument: Any, num: int) -> None:
+        if not isinstance(argument, dict):
+            raise TypeError(
+                f"Expected a JSON object the argument {num}, but got: '{argument}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        is_deep_merge = args.pop()
+        self._validate_is_deep_merge_argument(is_deep_merge)
+
+        snd = args.pop()
+        self._validate_merge_argument(snd, 2)
+
+        fst = args.pop()
+        self._validate_merge_argument(snd, 2)
+
+        # Currently, Step Functions only supports the shallow merging mode; therefore, you must specify the boolean
+        # value as false. In the shallow mode, if the same key exists in both JSON objects, the latter object's key
+        # overrides the same key in the first object. Additionally, objects nested within a JSON object aren't merged
+        # when you use shallow merging.
+        merged = copy.deepcopy(fst)
+        merged.update(snd)
+
+        env.stack.append(merged)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/json_to_string.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/json_to_string.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/json_to_string.py
@@ -0,0 +1,36 @@
+import json
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class JsonToString(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.JsonToString
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+        json_obj: json = args.pop()
+        json_string: str = json.dumps(json_obj, separators=(",", ":"))
+        env.stack.append(json_string)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/string_to_json.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/string_to_json.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/json_manipulation/string_to_json.py
@@ -0,0 +1,41 @@
+import json
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StringToJson(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.StringToJson
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        string_json: str = args.pop()
+
+        if string_json is not None and string_json.strip():
+            json_obj: json = json.loads(string_json)
+        else:
+            json_obj: json = None
+        env.stack.append(json_obj)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/math_add.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/math_add.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/math_add.py
@@ -0,0 +1,80 @@
+import decimal
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+def _round_like_java(f: float) -> int:
+    # this behaves a bit weird for boundary values
+    # AWS stepfunctions is implemented in Java, so we need to adjust the rounding accordingly
+    # python by default rounds half to even
+    if f >= 0:
+        decimal.getcontext().rounding = decimal.ROUND_HALF_UP
+    else:
+        decimal.getcontext().rounding = decimal.ROUND_HALF_DOWN
+    d = decimal.Decimal(f)
+    return round(d, 0)
+
+
+class MathAdd(StatesFunction):
+    # Returns the sum of two numbers.
+    #
+    # For example:
+    # With input
+    # {
+    #    "value1": 111,
+    #    "step": -1
+    # }
+    #
+    # Call
+    # "value1.$": "States.MathAdd($.value1, $.step)"
+    #
+    # Returns
+    # {"value1": 110 }
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.MathAdd
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 2:
+            raise ValueError(
+                f"Expected 2 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    @staticmethod
+    def _validate_integer_value(value: Any) -> int:
+        if not isinstance(value, (int, float)):
+            raise TypeError(f"Expected integer value, but got: '{value}'.")
+        # If you specify a non-integer value for one or both the arguments,
+        # Step Functions will round it off to the nearest integer.
+
+        if isinstance(value, float):
+            result = _round_like_java(value)
+            return int(result)
+
+        return value
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        a = self._validate_integer_value(args[0])
+        b = self._validate_integer_value(args[1])
+
+        res = a + b
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/math_random.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/math_random.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/math_operations/math_random.py
@@ -0,0 +1,71 @@
+import random
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class MathRandom(StatesFunction):
+    # Returns a random number between the specified start and end number.
+    #
+    # For example:
+    # With input
+    # {
+    #    "start": 1,
+    #    "end": 999
+    # }
+    #
+    # Call
+    # "random.$": "States.MathRandom($.start, $.end)"
+    #
+    # Returns
+    # {"random": 456 }
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.MathRandom
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size < 2 or arg_list.size > 3:
+            raise ValueError(
+                f"Expected 2-3 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    @staticmethod
+    def _validate_integer_value(value: Any, argument_name: str) -> int:
+        if not isinstance(value, (int, float)):
+            raise TypeError(
+                f"Expected integer value for {argument_name}, but got: '{value}'."
+            )
+        # If you specify a non-integer value for the start number or end number argument,
+        # Step Functions will round it off to the nearest integer.
+        return int(value)
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        seed = None
+        if self.arg_list.size == 3:
+            seed = args.pop()
+            self._validate_integer_value(seed, "seed")
+
+        end = self._validate_integer_value(args.pop(), "end")
+        start = self._validate_integer_value(args.pop(), "start")
+
+        rand_gen = random.Random(seed)
+        rand_int = rand_gen.randint(start, end)
+        env.stack.append(rand_int)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function.py
@@ -0,0 +1,14 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.function import Function
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+
+
+class StatesFunction(Function):
+    name: StatesFunctionName
+
+    def __init__(self, states_name: StatesFunctionName, arg_list: FunctionArgumentList):
+        super().__init__(name=states_name, arg_list=arg_list)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_array.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_array.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_array.py
@@ -0,0 +1,31 @@
+from typing import Any, List
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StatesFunctionArray(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.Array),
+            arg_list=arg_list,
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        values: List[Any] = list()
+        for _ in range(self.arg_list.size):
+            values.append(env.stack.pop())
+        values.reverse()
+        env.stack.append(values)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_format.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_format.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_format.py
@@ -0,0 +1,54 @@
+from typing import Any, Final, List
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_string import (
+    FunctionArgumentString,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StatesFunctionFormat(StatesFunction):
+    _DELIMITER: Final[str] = "{}"
+
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.Format),
+            arg_list=arg_list,
+        )
+        if arg_list.size > 0:
+            raise ValueError(
+                f"Expected at least 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+        if not isinstance(arg_list.arg_list[0], FunctionArgumentString):
+            raise ValueError(
+                f"Expected the first argument for function type '{type(self)}' to be a string, but got: '{arg_list.arg_list[0]}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        # TODO: investigate behaviour for incorrect number of arguments in string format.
+        self.arg_list.eval(env=env)
+
+        values: List[Any] = list()
+        for _ in range(self.arg_list.size):
+            values.append(env.stack.pop())
+        string_format: str = values.pop()
+        values.reverse()
+
+        string_format_parts: List[str] = string_format.split(self._DELIMITER)
+        string_result: str = ""
+        for part in string_format_parts:
+            string_result += part
+            string_result += values.pop()
+
+        env.stack.append(string_result)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_json_to_string.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_json_to_string.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_json_to_string.py
@@ -0,0 +1,35 @@
+import json
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StatesFunctionJsonToString(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.JsonToString
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        json_obj: json = env.stack.pop()
+        json_string: str = json.dumps(json_obj)
+        env.stack.append(json_string)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_string_to_json.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_string_to_json.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_string_to_json.py
@@ -0,0 +1,35 @@
+import json
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StatesFunctionStringToJson(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.StringToJson
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 1:
+            raise ValueError(
+                f"Expected 1 argument for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        string_json: str = env.stack.pop()
+        json_obj: json = json.loads(string_json)
+        env.stack.append(json_obj)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_uuid.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_uuid.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/states_function_uuid.py
@@ -0,0 +1,29 @@
+from moto.moto_api._internal import mock_random
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StatesFunctionUUID(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.UUID),
+            arg_list=arg_list,
+        )
+        if len(arg_list.arg_list) != 0:
+            raise ValueError(
+                f"Expected no arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        env.stack.append(str(mock_random.uuid4()))
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/string_operations/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/string_operations/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/string_operations/string_split.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/string_operations/string_split.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/string_operations/string_split.py
@@ -0,0 +1,74 @@
+import re
+
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StringSplit(StatesFunction):
+    # Splits a string into an array of values.
+    #
+    # For example:
+    # With input
+    # {
+    #   "inputString": "This.is+a,test=string",
+    #   "splitter": ".+,="
+    # }
+    #
+    # The call
+    # {
+    #   "myStringArray.$": "States.StringSplit($.inputString, $.splitter)"
+    # }
+    #
+    # Returns
+    # {"myStringArray": [
+    #   "This",
+    #   "is",
+    #   "a",
+    #   "test",
+    #   "string"
+    # ]}
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(
+                function_type=StatesFunctionNameType.StringSplit
+            ),
+            arg_list=arg_list,
+        )
+        if arg_list.size != 2:
+            raise ValueError(
+                f"Expected 2 arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.arg_list.eval(env=env)
+        args = env.stack.pop()
+
+        del_chars = args.pop()
+        if not isinstance(del_chars, str):
+            raise ValueError(
+                f"Expected string value as delimiting characters, but got '{del_chars}'."
+            )
+
+        string = args.pop()
+        if not isinstance(del_chars, str):
+            raise ValueError(f"Expected string value, but got '{del_chars}'.")
+
+        patterns = []
+        for c in del_chars:
+            patterns.append(f"\\{c}")
+        pattern = "|".join(patterns)
+
+        parts = re.split(pattern, string)
+        parts_clean = list(filter(bool, parts))
+        env.stack.append(parts_clean)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/unique_id_generation/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/unique_id_generation/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/unique_id_generation/uuid.py b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/unique_id_generation/uuid.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/function/statesfunction/unique_id_generation/uuid.py
@@ -0,0 +1,29 @@
+from moto.moto_api._internal import mock_random
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class UUID(StatesFunction):
+    def __init__(self, arg_list: FunctionArgumentList):
+        super().__init__(
+            states_name=StatesFunctionName(function_type=StatesFunctionNameType.UUID),
+            arg_list=arg_list,
+        )
+        if len(arg_list.arg_list) != 0:
+            raise ValueError(
+                f"Expected no arguments for function type '{type(self)}', but got: '{arg_list}'."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        env.stack.append(str(mock_random.uuid4()))
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/functionname/__init__.py b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/functionname/custom_function_name.py b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/custom_function_name.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/custom_function_name.py
@@ -0,0 +1,8 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.function_name import (
+    FunctionName,
+)
+
+
+class CustomFunctionName(FunctionName):
+    def __init__(self, name: str):
+        super().__init__(name=name)
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/functionname/function_name.py b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/function_name.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/function_name.py
@@ -0,0 +1,10 @@
+import abc
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class FunctionName(Component, abc.ABC):
+    name: str
+
+    def __init__(self, name: str):
+        self.name = name
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/functionname/state_function_name_types.py b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/state_function_name_types.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/state_function_name_types.py
@@ -0,0 +1,29 @@
+from enum import Enum
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLIntrinsicLexer import (
+    ASLIntrinsicLexer,
+)
+
+
+class StatesFunctionNameType(Enum):
+    Format = ASLIntrinsicLexer.Format
+    StringToJson = ASLIntrinsicLexer.StringToJson
+    JsonToString = ASLIntrinsicLexer.JsonToString
+    Array = ASLIntrinsicLexer.Array
+    ArrayPartition = ASLIntrinsicLexer.ArrayPartition
+    ArrayContains = ASLIntrinsicLexer.ArrayContains
+    ArrayRange = ASLIntrinsicLexer.ArrayRange
+    ArrayGetItem = ASLIntrinsicLexer.ArrayGetItem
+    ArrayLength = ASLIntrinsicLexer.ArrayLength
+    ArrayUnique = ASLIntrinsicLexer.ArrayUnique
+    Base64Encode = ASLIntrinsicLexer.Base64Encode
+    Base64Decode = ASLIntrinsicLexer.Base64Decode
+    Hash = ASLIntrinsicLexer.Hash
+    JsonMerge = ASLIntrinsicLexer.JsonMerge
+    MathRandom = ASLIntrinsicLexer.MathRandom
+    MathAdd = ASLIntrinsicLexer.MathAdd
+    StringSplit = ASLIntrinsicLexer.StringSplit
+    UUID = ASLIntrinsicLexer.UUID
+
+    def name(self) -> str:  # noqa  # pylint: disable=function-redefined
+        return ASLIntrinsicLexer.literalNames[self.value][1:-1]
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/functionname/states_function_name.py b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/states_function_name.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/functionname/states_function_name.py
@@ -0,0 +1,12 @@
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.function_name import (
+    FunctionName,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+
+
+class StatesFunctionName(FunctionName):
+    def __init__(self, function_type: StatesFunctionNameType):
+        super().__init__(name=function_type.name())
+        self.function_type: StatesFunctionNameType = function_type
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/member.py b/moto/stepfunctions/parser/asl/component/intrinsic/member.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/member.py
@@ -0,0 +1,17 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.intrinsic.component import Component
+
+
+class Member(Component):
+    ...
+
+
+class IdentifiedMember(Member):
+    def __init__(self, identifier: str):
+        self.identifier: Final[str] = identifier
+
+
+class DollarMember(IdentifiedMember):
+    def __init__(self):
+        super(DollarMember, self).__init__(identifier="$")
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/member_access.py b/moto/stepfunctions/parser/asl/component/intrinsic/member_access.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/member_access.py
@@ -0,0 +1,9 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.intrinsic.member import Member
+
+
+class MemberAccess(Member):
+    def __init__(self, subject: Member, target: Member):
+        self.subject: Final[Member] = subject
+        self.target: Final[Member] = target
diff --git a/moto/stepfunctions/parser/asl/component/intrinsic/program.py b/moto/stepfunctions/parser/asl/component/intrinsic/program.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/intrinsic/program.py
@@ -0,0 +1,8 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.intrinsic.component import Component
+
+
+class Program(Component):
+    def __init__(self):
+        self.statements: Final[List[Component]] = []
diff --git a/moto/stepfunctions/parser/asl/component/program/__init__.py b/moto/stepfunctions/parser/asl/component/program/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/program/program.py b/moto/stepfunctions/parser/asl/component/program/program.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/program/program.py
@@ -0,0 +1,149 @@
+import logging
+import threading
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.api import (
+    ExecutionAbortedEventDetails,
+    ExecutionFailedEventDetails,
+    ExecutionSucceededEventDetails,
+    ExecutionTimedOutEventDetails,
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+)
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.common.timeouts.timeout import (
+    TimeoutSeconds,
+)
+from moto.stepfunctions.parser.asl.component.common.version import Version
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.states import States
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.eval.program_state import (
+    ProgramEnded,
+    ProgramError,
+    ProgramState,
+    ProgramStopped,
+    ProgramTimedOut,
+)
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+from moto.stepfunctions.parser.utils import TMP_THREADS
+
+LOG = logging.getLogger(__name__)
+
+
+class Program(EvalComponent):
+    start_at: Final[StartAt]
+    states: Final[States]
+    timeout_seconds: Final[Optional[TimeoutSeconds]]
+    comment: Final[Optional[Comment]]
+    version: Final[Optional[Version]]
+
+    def __init__(
+        self,
+        start_at: StartAt,
+        states: States,
+        timeout_seconds: Optional[TimeoutSeconds],
+        comment: Optional[Comment] = None,
+        version: Optional[Version] = None,
+    ):
+        self.start_at = start_at
+        self.states = states
+        self.timeout_seconds = timeout_seconds
+        self.comment = comment
+        self.version = version
+
+    def _get_state(self, state_name: str) -> CommonStateField:
+        state: Optional[CommonStateField] = self.states.states.get(state_name, None)
+        if state is None:
+            raise ValueError(f"No such state {state}.")
+        return state
+
+    def eval(self, env: Environment) -> None:
+        timeout = self.timeout_seconds.timeout_seconds if self.timeout_seconds else None
+        env.next_state_name = self.start_at.start_at_name
+        worker_thread = threading.Thread(target=super().eval, args=(env,))
+        TMP_THREADS.append(worker_thread)
+        worker_thread.start()
+        worker_thread.join(timeout=timeout)
+        is_timeout = worker_thread.is_alive()
+        if is_timeout:
+            env.set_timed_out()
+
+    def _eval_body(self, env: Environment) -> None:
+        try:
+            while env.is_running():
+                next_state: CommonStateField = self._get_state(env.next_state_name)
+                next_state.eval(env)
+                env.stack.clear()
+        except FailureEventException as ex:
+            env.set_error(error=ex.get_execution_failed_event_details())
+        except Exception as ex:
+            cause = f"{type(ex).__name__}({str(ex)})"
+            LOG.error(f"Stepfunctions computation ended with exception '{cause}'.")
+            env.set_error(
+                ExecutionFailedEventDetails(
+                    error=StatesErrorName(
+                        typ=StatesErrorNameType.StatesRuntime
+                    ).error_name,
+                    cause=cause,
+                )
+            )
+
+        # If the program is evaluating within a frames then these are not allowed to produce program termination states.
+        if env.is_frame():
+            return
+
+        program_state: ProgramState = env.program_state()
+        if isinstance(program_state, ProgramError):
+            exec_failed_event_details = program_state.error or dict()
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.ExecutionFailed,
+                event_detail=EventDetails(
+                    executionFailedEventDetails=exec_failed_event_details
+                ),
+            )
+        elif isinstance(program_state, ProgramStopped):
+            env.event_history_context.source_event_id = 0
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.ExecutionAborted,
+                event_detail=EventDetails(
+                    executionAbortedEventDetails=ExecutionAbortedEventDetails(
+                        error=program_state.error, cause=program_state.cause
+                    )
+                ),
+            )
+        elif isinstance(program_state, ProgramTimedOut):
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.ExecutionTimedOut,
+                event_detail=EventDetails(
+                    executionTimedOutEventDetails=ExecutionTimedOutEventDetails()
+                ),
+            )
+        elif isinstance(program_state, ProgramEnded):
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.ExecutionSucceeded,
+                event_detail=EventDetails(
+                    executionSucceededEventDetails=ExecutionSucceededEventDetails(
+                        output=to_json_str(env.inp, separators=(",", ":")),
+                        outputDetails=HistoryEventExecutionDataDetails(
+                            truncated=False  # Always False for api calls.
+                        ),
+                    )
+                ),
+            )
diff --git a/moto/stepfunctions/parser/asl/component/state/__init__.py b/moto/stepfunctions/parser/asl/component/state/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state.py b/moto/stepfunctions/parser/asl/component/state/state.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state.py
@@ -0,0 +1,168 @@
+from __future__ import annotations
+
+import abc
+import datetime
+import logging
+from abc import ABC
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.api import (
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+    StateEnteredEventDetails,
+    StateExitedEventDetails,
+)
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.end import End
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.common.path.input_path import InputPath
+from moto.stepfunctions.parser.asl.component.common.path.output_path import OutputPath
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.state.state_continue_with import (
+    ContinueWith,
+    ContinueWithEnd,
+    ContinueWithNext,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.component.state.state_type import StateType
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import State
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.eval.program_state import ProgramRunning
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+LOG = logging.getLogger(__name__)
+
+
+class CommonStateField(EvalComponent, ABC):
+    name: str
+
+    # The state's type.
+    state_type: StateType
+
+    # There can be any number of terminal states per state machine. Only one of Next or End can
+    # be used in a state. Some state types, such as Choice, don't support or use the End field.
+    continue_with: ContinueWith
+
+    def __init__(
+        self,
+        state_entered_event_type: HistoryEventType,
+        state_exited_event_type: Optional[HistoryEventType],
+    ):
+        # Holds a human-readable description of the state.
+        self.comment: Optional[Comment] = None
+
+        # A path that selects a portion of the state's input to be passed to the state's state_task for processing.
+        # If omitted, it has the value $ which designates the entire input.
+        self.input_path: InputPath = InputPath(InputPath.DEFAULT_PATH)
+
+        # A path that selects a portion of the state's output to be passed to the next state.
+        # If omitted, it has the value $ which designates the entire output.
+        self.output_path: OutputPath = OutputPath(OutputPath.DEFAULT_PATH)
+
+        self.state_entered_event_type: Final[
+            HistoryEventType
+        ] = state_entered_event_type
+        self.state_exited_event_type: Final[
+            Optional[HistoryEventType]
+        ] = state_exited_event_type
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        self.name = state_props.name
+        self.state_type = state_props.get(StateType)
+        self.continue_with = (
+            ContinueWithEnd()
+            if state_props.get(End)
+            else ContinueWithNext(state_props.get(Next))
+        )
+        self.comment = state_props.get(Comment)
+        self.input_path = state_props.get(InputPath) or InputPath(
+            InputPath.DEFAULT_PATH
+        )
+        self.output_path = state_props.get(OutputPath) or OutputPath(
+            OutputPath.DEFAULT_PATH
+        )
+
+    def _set_next(self, env: Environment) -> None:
+        if env.next_state_name != self.name:
+            # Next was already overriden.
+            return
+
+        if isinstance(self.continue_with, ContinueWithNext):
+            env.next_state_name = self.continue_with.next_state.name
+        elif isinstance(
+            self.continue_with, ContinueWithEnd
+        ):  # This includes ContinueWithSuccess
+            env.set_ended()
+        else:
+            LOG.error(
+                f"Could not handle ContinueWith type of '{type(self.continue_with)}'."
+            )
+
+    def _get_state_entered_event_details(
+        self, env: Environment
+    ) -> StateEnteredEventDetails:
+        return StateEnteredEventDetails(
+            name=self.name,
+            input=to_json_str(env.inp, separators=(",", ":")),
+            inputDetails=HistoryEventExecutionDataDetails(
+                truncated=False  # Always False for api calls.
+            ),
+        )
+
+    def _get_state_exited_event_details(
+        self, env: Environment
+    ) -> StateExitedEventDetails:
+        return StateExitedEventDetails(
+            name=self.name,
+            output=to_json_str(env.inp, separators=(",", ":")),
+            outputDetails=HistoryEventExecutionDataDetails(
+                truncated=False  # Always False for api calls.
+            ),
+        )
+
+    @abc.abstractmethod
+    def _eval_state(self, env: Environment) -> None:
+        ...
+
+    def _eval_body(self, env: Environment) -> None:
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=self.state_entered_event_type,
+            event_detail=EventDetails(
+                stateEnteredEventDetails=self._get_state_entered_event_details(env=env)
+            ),
+        )
+
+        env.context_object_manager.context_object["State"] = State(
+            EnteredTime=datetime.datetime.now(tz=datetime.timezone.utc).isoformat(),
+            Name=self.name,
+        )
+
+        # Filter the input onto the stack.
+        if self.input_path:
+            self.input_path.eval(env)
+
+        # Exec the state's logic.
+        self._eval_state(env)
+        #
+        if not isinstance(env.program_state(), ProgramRunning):
+            return
+
+        # Filter the input onto the input.
+        if self.output_path:
+            self.output_path.eval(env)
+
+        if self.state_exited_event_type is not None:
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=self.state_exited_event_type,
+                event_detail=EventDetails(
+                    stateExitedEventDetails=self._get_state_exited_event_details(
+                        env=env
+                    ),
+                ),
+            )
+
+        # Set next state or halt (end).
+        self._set_next(env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_choice/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/choice_rule.py b/moto/stepfunctions/parser/asl/component/state/state_choice/choice_rule.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/choice_rule.py
@@ -0,0 +1,20 @@
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison import (
+    Comparison,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ChoiceRule(EvalComponent):
+    comparison: Final[Optional[Comparison]]
+    next_stmt: Final[Optional[Next]]
+
+    def __init__(self, comparison: Optional[Comparison], next_stmt: Optional[Next]):
+        self.comparison = comparison
+        self.next_stmt = next_stmt
+
+    def _eval_body(self, env: Environment) -> None:
+        self.comparison.eval(env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/choices_decl.py b/moto/stepfunctions/parser/asl/component/state/state_choice/choices_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/choices_decl.py
@@ -0,0 +1,11 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.component.state.state_choice.choice_rule import (
+    ChoiceRule,
+)
+
+
+class ChoicesDecl(Component):
+    def __init__(self, rules: List[ChoiceRule]):
+        self.rules: Final[List[ChoiceRule]] = rules
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison.py
@@ -0,0 +1,7 @@
+from abc import ABC
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+
+
+class Comparison(EvalComponent, ABC):
+    ...
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_composite.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_composite.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_composite.py
@@ -0,0 +1,101 @@
+from __future__ import annotations
+
+import abc
+from enum import Enum
+from typing import Any, Final, List
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+from moto.stepfunctions.parser.asl.component.state.state_choice.choice_rule import (
+    ChoiceRule,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison import (
+    Comparison,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+
+class ComparisonCompositeProps(TypedProps):
+    def add(self, instance: Any) -> None:
+        inst_type = type(instance)
+
+        if issubclass(inst_type, ComparisonComposite):
+            super()._add(ComparisonComposite, instance)
+            return
+
+        super().add(instance)
+
+
+class ComparisonComposite(Comparison, abc.ABC):
+    class ChoiceOp(Enum):
+        And = ASLLexer.AND
+        Or = ASLLexer.OR
+        Not = ASLLexer.NOT
+
+    operator: Final[ComparisonComposite.ChoiceOp]
+
+    def __init__(self, operator: ComparisonComposite.ChoiceOp):
+        self.operator = operator
+
+
+class ComparisonCompositeSingle(ComparisonComposite, abc.ABC):
+    rule: Final[ChoiceRule]
+
+    def __init__(self, operator: ComparisonComposite.ChoiceOp, rule: ChoiceRule):
+        super(ComparisonCompositeSingle, self).__init__(operator=operator)
+        self.rule = rule
+
+
+class ComparisonCompositeMulti(ComparisonComposite, abc.ABC):
+    rules: Final[List[ChoiceRule]]
+
+    def __init__(self, operator: ComparisonComposite.ChoiceOp, rules: List[ChoiceRule]):
+        super(ComparisonCompositeMulti, self).__init__(operator=operator)
+        self.rules = rules
+
+
+class ComparisonCompositeNot(ComparisonCompositeSingle):
+    def __init__(self, rule: ChoiceRule):
+        super(ComparisonCompositeNot, self).__init__(
+            operator=ComparisonComposite.ChoiceOp.Not, rule=rule
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        self.rule.eval(env)
+        tmp: bool = env.stack.pop()
+        res = tmp is False
+        env.stack.append(res)
+
+
+class ComparisonCompositeAnd(ComparisonCompositeMulti):
+    def __init__(self, rules: List[ChoiceRule]):
+        super(ComparisonCompositeAnd, self).__init__(
+            operator=ComparisonComposite.ChoiceOp.And, rules=rules
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        res = True
+        for rule in self.rules:
+            rule.eval(env)
+            rule_out = env.stack.pop()
+            if not rule_out:
+                res = False
+                break  # TODO: Lazy evaluation? Can use all function instead? how's eval for that?
+        env.stack.append(res)
+
+
+class ComparisonCompositeOr(ComparisonCompositeMulti):
+    def __init__(self, rules: List[ChoiceRule]):
+        super(ComparisonCompositeOr, self).__init__(
+            operator=ComparisonComposite.ChoiceOp.Or, rules=rules
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        res = False
+        for rule in self.rules:
+            rule.eval(env)
+            rule_out = env.stack.pop()
+            res = res or rule_out
+            if res:
+                break  # TODO: Lazy evaluation? Can use all function instead? how's eval for that?
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_func.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_func.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_func.py
@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+import json
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.factory import (
+    OperatorFactory,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ComparisonFunc(EvalComponent):
+    def __init__(self, operator: ComparisonOperatorType, value: json):
+        self.operator_type: Final[ComparisonOperatorType] = operator
+        self.value: json = value
+
+    def _eval_body(self, env: Environment) -> None:
+        value = self.value
+        operator: Operator = OperatorFactory.get(self.operator_type)
+        operator.eval(env=env, value=value)
+
+    @staticmethod
+    def _string_equals(env: Environment, value: json) -> None:
+        val = env.stack.pop()
+        res = str(val) == value
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_operator_type.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_operator_type.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_operator_type.py
@@ -0,0 +1,45 @@
+from enum import Enum
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+
+
+class ComparisonOperatorType(Enum):
+    BooleanEquals = ASLLexer.BOOLEANEQUALS
+    BooleanEqualsPath = ASLLexer.BOOLEANQUALSPATH
+    IsBoolean = ASLLexer.ISBOOLEAN
+    IsNull = ASLLexer.ISNULL
+    IsNumeric = ASLLexer.ISNUMERIC
+    IsPresent = ASLLexer.ISPRESENT
+    IsString = ASLLexer.ISSTRING
+    IsTimestamp = ASLLexer.ISTIMESTAMP
+    NumericEquals = ASLLexer.NUMERICEQUALS
+    NumericEqualsPath = ASLLexer.NUMERICEQUALSPATH
+    NumericGreaterThan = ASLLexer.NUMERICGREATERTHAN
+    NumericGreaterThanPath = ASLLexer.NUMERICGREATERTHANPATH
+    NumericGreaterThanEquals = ASLLexer.NUMERICGREATERTHANEQUALS
+    NumericGreaterThanEqualsPath = ASLLexer.NUMERICGREATERTHANEQUALSPATH
+    NumericLessThan = ASLLexer.NUMERICLESSTHAN
+    NumericLessThanPath = ASLLexer.NUMERICLESSTHANPATH
+    NumericLessThanEquals = ASLLexer.NUMERICLESSTHANEQUALS
+    NumericLessThanEqualsPath = ASLLexer.NUMERICLESSTHANEQUALSPATH
+    StringEquals = ASLLexer.STRINGEQUALS
+    StringEqualsPath = ASLLexer.STRINGEQUALSPATH
+    StringGreaterThan = ASLLexer.STRINGGREATERTHAN
+    StringGreaterThanPath = ASLLexer.STRINGGREATERTHANPATH
+    StringGreaterThanEquals = ASLLexer.STRINGGREATERTHANEQUALS
+    StringGreaterThanEqualsPath = ASLLexer.STRINGGREATERTHANEQUALSPATH
+    StringLessThan = ASLLexer.STRINGLESSTHAN
+    StringLessThanPath = ASLLexer.STRINGLESSTHANPATH
+    StringLessThanEquals = ASLLexer.STRINGLESSTHANEQUALS
+    StringLessThanEqualsPath = ASLLexer.STRINGLESSTHANEQUALSPATH
+    StringMatches = ASLLexer.STRINGMATCHES
+    TimestampEquals = ASLLexer.TIMESTAMPEQUALS
+    TimestampEqualsPath = ASLLexer.TIMESTAMPEQUALSPATH
+    TimestampGreaterThan = ASLLexer.TIMESTAMPGREATERTHAN
+    TimestampGreaterThanPath = ASLLexer.TIMESTAMPGREATERTHANPATH
+    TimestampGreaterThanEquals = ASLLexer.TIMESTAMPGREATERTHANEQUALS
+    TimestampGreaterThanEqualsPath = ASLLexer.TIMESTAMPGREATERTHANEQUALSPATH
+    TimestampLessThan = ASLLexer.TIMESTAMPLESSTHAN
+    TimestampLessThanPath = ASLLexer.TIMESTAMPLESSTHANPATH
+    TimestampLessThanEquals = ASLLexer.TIMESTAMPLESSTHANEQUALS
+    TimestampLessThanEqualsPath = ASLLexer.TIMESTAMPLESSTHANEQUALSPATH
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_variable.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_variable.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/comparison_variable.py
@@ -0,0 +1,27 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison import (
+    Comparison,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_func import (
+    ComparisonFunc,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.variable import (
+    Variable,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ComparisonVariable(Comparison):
+    variable: Final[Variable]
+    comparison_function: Final[ComparisonFunc]
+
+    def __init__(self, variable: Variable, func: ComparisonFunc):
+        self.variable = variable
+        self.comparison_function = func
+
+    def _eval_body(self, env: Environment) -> None:
+        variable: Variable = self.variable
+        variable.eval(env)
+        comparison_function: ComparisonFunc = self.comparison_function
+        comparison_function.eval(env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/factory.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/factory.py
@@ -0,0 +1,20 @@
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.implementations.boolean_equals import *  # noqa
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.implementations.is_operator import *  # noqa
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.implementations.numeric import *  # noqa
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.implementations.string_operators import *  # noqa
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.implementations.timestamp_operators import *  # noqa
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+
+
+class OperatorFactory:
+    @staticmethod
+    def get(typ: ComparisonOperatorType) -> Operator:
+        op = Operator.get((str(typ)))
+        if op is None:
+            raise NotImplementedError(f"{typ} is not supported.")
+        return op
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/boolean_equals.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/boolean_equals.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/boolean_equals.py
@@ -0,0 +1,46 @@
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class BooleanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.BooleanEquals)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = False
+        if isinstance(variable, bool):
+            res = variable is value
+        env.stack.append(res)
+
+
+class BooleanEqualsPath(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.BooleanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+
+        inp = env.stack[-1]
+        comp_value: bool = JSONPathUtils.extract_json(value, inp)
+        if not isinstance(comp_value, bool):
+            raise TypeError(
+                f"Expected type bool, but got '{comp_value}' from path '{value}'."
+            )
+
+        res = False
+        if isinstance(variable, bool):
+            res = bool(variable) is comp_value
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/is_operator.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/is_operator.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/is_operator.py
@@ -0,0 +1,110 @@
+import datetime
+import logging
+from typing import Any, Final, Optional
+
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.variable import (
+    NoSuchVariable,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+LOG = logging.getLogger(__name__)
+
+
+class IsBoolean(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.IsBoolean)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = isinstance(variable, bool) is value
+        env.stack.append(res)
+
+
+class IsNull(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.IsNull)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        is_null = variable is None and not isinstance(variable, NoSuchVariable)
+        res = is_null is value
+        env.stack.append(res)
+
+
+class IsNumeric(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.IsNumeric)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = (
+            isinstance(variable, (int, float)) and not isinstance(variable, bool)
+        ) is value
+        env.stack.append(res)
+
+
+class IsPresent(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.IsPresent)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = isinstance(variable, NoSuchVariable) is not value
+        env.stack.append(res)
+
+
+class IsString(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.IsString)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = isinstance(variable, str) is value
+        env.stack.append(res)
+
+
+class IsTimestamp(Operator):
+    # Timestamps are strings which MUST conform to the RFC3339 profile of ISO 8601, with the further restrictions that
+    # an uppercase "T" character MUST be used to separate date and time, and an uppercase "Z" character MUST be
+    # present in the absence of a numeric time zone offset, for example "2016-03-14T01:59:00Z".
+    TIMESTAMP_FORMAT: Final[str] = "%Y-%m-%dT%H:%M:%SZ"
+
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.IsTimestamp)
+
+    @staticmethod
+    def string_to_timestamp(string: str) -> Optional[datetime.datetime]:
+        try:
+            return datetime.datetime.strptime(string, IsTimestamp.TIMESTAMP_FORMAT)
+        except Exception:
+            return None
+
+    @staticmethod
+    def is_timestamp(inp: Any) -> bool:
+        return isinstance(inp, str) and IsTimestamp.string_to_timestamp(inp) is not None
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        LOG.warning(
+            f"State Choice's 'IsTimestamp' operator is not fully supported for input '{variable}' and target '{value}'."
+        )
+        res = IsTimestamp.is_timestamp(variable) is value
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/numeric.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/numeric.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/numeric.py
@@ -0,0 +1,179 @@
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+def _is_numeric(variable: Any) -> bool:
+    return isinstance(variable, (int, float)) and not isinstance(variable, bool)
+
+
+class NumericEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if _is_numeric(variable):
+            res = variable == comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = NumericEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class NumericEqualsPath(NumericEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = NumericEquals._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class NumericGreaterThan(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericGreaterThan)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if _is_numeric(variable):
+            res = variable > comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = NumericGreaterThan._compare(variable, value)
+        env.stack.append(res)
+
+
+class NumericGreaterThanPath(NumericGreaterThan):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericGreaterThanPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = NumericGreaterThanPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class NumericGreaterThanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericGreaterThanEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if _is_numeric(variable):
+            res = variable >= comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = NumericGreaterThanEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class NumericGreaterThanEqualsPath(NumericGreaterThanEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericGreaterThanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = NumericGreaterThanEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class NumericLessThan(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericLessThan)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if _is_numeric(variable):
+            res = variable < comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = NumericLessThan._compare(variable, value)
+        env.stack.append(res)
+
+
+class NumericLessThanPath(NumericLessThan):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericLessThanPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = NumericLessThanPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class NumericLessThanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericLessThanEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if _is_numeric(variable):
+            res = variable <= comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = NumericLessThanEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class NumericLessThanEqualsPath(NumericLessThanEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.NumericLessThanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = NumericLessThanEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/string_operators.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/string_operators.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/string_operators.py
@@ -0,0 +1,195 @@
+import fnmatch
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class StringEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            res = variable == comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = StringEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class StringEqualsPath(StringEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = StringEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class StringGreaterThan(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringGreaterThan)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            res = variable > comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = StringGreaterThan._compare(variable, value)
+        env.stack.append(res)
+
+
+class StringGreaterThanPath(StringGreaterThan):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringGreaterThanPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = StringGreaterThanPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class StringGreaterThanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringGreaterThanEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            res = variable >= comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = StringGreaterThanEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class StringGreaterThanEqualsPath(StringGreaterThanEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringGreaterThanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = StringGreaterThanEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class StringLessThan(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringLessThan)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            res = variable < comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = StringLessThan._compare(variable, value)
+        env.stack.append(res)
+
+
+class StringLessThanPath(StringLessThan):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringLessThanPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = StringLessThanPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class StringLessThanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringLessThanEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            res = variable <= comparison_value
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = StringLessThanEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class StringLessThanEqualsPath(StringLessThanEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringLessThanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = StringLessThanEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class StringMatches(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.StringMatches)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            res = fnmatch.fnmatch(variable, comparison_value)
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = StringMatches._compare(variable, value)
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/timestamp_operators.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/timestamp_operators.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/implementations/timestamp_operators.py
@@ -0,0 +1,193 @@
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.implementations.is_operator import (
+    IsTimestamp,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.operator.operator import (
+    Operator,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class TimestampEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            a = IsTimestamp.string_to_timestamp(variable)
+            if a is not None:
+                b = IsTimestamp.string_to_timestamp(comparison_value)
+                res = a == b
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = TimestampEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class TimestampEqualsPath(TimestampEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = TimestampEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class TimestampGreaterThan(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampGreaterThan)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            a = IsTimestamp.string_to_timestamp(variable)
+            if a is not None:
+                b = IsTimestamp.string_to_timestamp(comparison_value)
+                res = a > b
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = TimestampGreaterThan._compare(variable, value)
+        env.stack.append(res)
+
+
+class TimestampGreaterThanPath(TimestampGreaterThan):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampGreaterThanPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = TimestampGreaterThanPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class TimestampGreaterThanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampGreaterThanEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            a = IsTimestamp.string_to_timestamp(variable)
+            if a is not None:
+                b = IsTimestamp.string_to_timestamp(comparison_value)
+                res = a >= b
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = TimestampGreaterThanEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class TimestampGreaterThanEqualsPath(TimestampGreaterThanEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampGreaterThanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = TimestampGreaterThanEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class TimestampLessThan(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampLessThan)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            a = IsTimestamp.string_to_timestamp(variable)
+            if a is not None:
+                b = IsTimestamp.string_to_timestamp(comparison_value)
+                res = a < b
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = TimestampLessThan._compare(variable, value)
+        env.stack.append(res)
+
+
+class TimestampLessThanPath(TimestampLessThan):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampLessThanPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = TimestampLessThanPath._compare(variable, comp_value)
+        env.stack.append(res)
+
+
+class TimestampLessThanEquals(Operator):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampLessThanEquals)
+
+    @staticmethod
+    def _compare(variable: Any, comparison_value: Any) -> bool:
+        res = False
+        if isinstance(variable, str):
+            a = IsTimestamp.string_to_timestamp(variable)
+            if a is not None:
+                b = IsTimestamp.string_to_timestamp(comparison_value)
+                res = a <= b
+        return res
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        res = TimestampLessThanEquals._compare(variable, value)
+        env.stack.append(res)
+
+
+class TimestampLessThanEqualsPath(TimestampLessThanEquals):
+    @staticmethod
+    def impl_name() -> str:
+        return str(ComparisonOperatorType.TimestampLessThanEqualsPath)
+
+    @staticmethod
+    def eval(env: Environment, value: Any) -> None:
+        variable = env.stack.pop()
+        inp = env.stack[-1]
+        comp_value = JSONPathUtils.extract_json(value, inp)
+        res = TimestampLessThanEqualsPath._compare(variable, comp_value)
+        env.stack.append(res)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/operator.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/operator.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/operator/operator.py
@@ -0,0 +1,12 @@
+import abc
+from typing import Any
+
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.utils import SubtypesInstanceManager
+
+
+class Operator(abc.ABC, SubtypesInstanceManager):
+    @staticmethod
+    @abc.abstractmethod
+    def eval(env: Environment, value: Any) -> None:
+        pass
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/variable.py b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/variable.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/comparison/variable.py
@@ -0,0 +1,23 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class NoSuchVariable:
+    def __init__(self, path: str):
+        self.path: Final[str] = path
+
+
+class Variable(EvalComponent):
+    def __init__(self, value: str):
+        self.value: Final[str] = value
+
+    def _eval_body(self, env: Environment) -> None:
+        try:
+            inp = env.stack[-1]
+            value = JSONPathUtils.extract_json(self.value, inp)
+        except Exception as ex:
+            value = NoSuchVariable(f"{self.value}, {ex}")
+        env.stack.append(value)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/default_decl.py b/moto/stepfunctions/parser/asl/component/state/state_choice/default_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/default_decl.py
@@ -0,0 +1,8 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class DefaultDecl(Component):
+    def __init__(self, state_name: str):
+        self.state_name: Final[str] = state_name
diff --git a/moto/stepfunctions/parser/asl/component/state/state_choice/state_choice.py b/moto/stepfunctions/parser/asl/component/state/state_choice/state_choice.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_choice/state_choice.py
@@ -0,0 +1,59 @@
+from typing import Optional
+
+from moto.stepfunctions.parser.api import HistoryEventType
+from moto.stepfunctions.parser.asl.component.common.flow.end import End
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_choice.choices_decl import (
+    ChoicesDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.default_decl import (
+    DefaultDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StateChoice(CommonStateField):
+    choices_decl: ChoicesDecl
+
+    def __init__(self):
+        super(StateChoice, self).__init__(
+            state_entered_event_type=HistoryEventType.ChoiceStateEntered,
+            state_exited_event_type=HistoryEventType.ChoiceStateExited,
+        )
+        self.default_state: Optional[DefaultDecl] = None
+        self._next_state_name: Optional[str] = None
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateChoice, self).from_state_props(state_props)
+        self.choices_decl = state_props.get(ChoicesDecl)
+        self.default_state = state_props.get(DefaultDecl)
+
+        if state_props.get(Next) or state_props.get(End):
+            raise ValueError(
+                "Choice states don't support the End field. "
+                "In addition, they use Next only inside their Choices field. "
+                f"With state '{self}'."
+            )
+
+    def _set_next(self, env: Environment) -> None:
+        if self._next_state_name is None:
+            raise RuntimeError(f"No Next option from state: '{self}'.")
+        env.next_state_name = self._next_state_name
+
+    def _eval_state(self, env: Environment) -> None:
+        if self.default_state:
+            self._next_state_name = self.default_state.state_name
+
+        # TODO: Lazy evaluation?
+        for rule in self.choices_decl.rules:
+            rule.eval(env)
+            res = env.stack.pop()
+            if res is True:
+                if not rule.next_stmt:
+                    raise RuntimeError(
+                        f"Missing Next definition for state_choice rule '{rule}' in choices '{self}'."
+                    )
+                self._next_state_name = rule.next_stmt.name
+                break
diff --git a/moto/stepfunctions/parser/asl/component/state/state_continue_with.py b/moto/stepfunctions/parser/asl/component/state/state_continue_with.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_continue_with.py
@@ -0,0 +1,20 @@
+import abc
+
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+
+
+class ContinueWith(abc.ABC):
+    ...
+
+
+class ContinueWithEnd(ContinueWith):
+    pass
+
+
+class ContinueWithNext(ContinueWith):
+    def __init__(self, next_state: Next):
+        self.next_state: Next = next_state
+
+
+class ContinueWithSuccess(ContinueWithEnd):
+    pass
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/execute_state.py b/moto/stepfunctions/parser/asl/component/state/state_execution/execute_state.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/execute_state.py
@@ -0,0 +1,258 @@
+import abc
+import copy
+import logging
+import threading
+from threading import Thread
+from typing import Any, List, Optional
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.catch.catch_decl import CatchDecl
+from moto.stepfunctions.parser.asl.component.common.catch.catch_outcome import (
+    CatchOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.common.path.result_path import ResultPath
+from moto.stepfunctions.parser.asl.component.common.result_selector import (
+    ResultSelector,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retry_decl import RetryDecl
+from moto.stepfunctions.parser.asl.component.common.retry.retry_outcome import (
+    RetryOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.timeouts.heartbeat import (
+    Heartbeat,
+    HeartbeatSeconds,
+)
+from moto.stepfunctions.parser.asl.component.common.timeouts.timeout import (
+    EvalTimeoutError,
+    Timeout,
+    TimeoutSeconds,
+)
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+LOG = logging.getLogger(__name__)
+
+
+class ExecutionState(CommonStateField, abc.ABC):
+    def __init__(
+        self,
+        state_entered_event_type: HistoryEventType,
+        state_exited_event_type: Optional[HistoryEventType],
+    ):
+        super().__init__(
+            state_entered_event_type=state_entered_event_type,
+            state_exited_event_type=state_exited_event_type,
+        )
+        # ResultPath (Optional)
+        # Specifies where (in the input) to place the results of executing the state_task that's specified in Resource.
+        # The input is then filtered as specified by the OutputPath field (if present) before being used as the
+        # state's output.
+        self.result_path: Optional[ResultPath] = None
+
+        # ResultSelector (Optional)
+        # Pass a collection of key value pairs, where the values are static or selected from the result.
+        self.result_selector: Optional[ResultSelector] = None
+
+        # Retry (Optional)
+        # An array of objects, called Retriers, that define a retry policy if the state encounters runtime errors.
+        self.retry: Optional[RetryDecl] = None
+
+        # Catch (Optional)
+        # An array of objects, called Catchers, that define a fallback state. This state is executed if the state
+        # encounters runtime errors and its retry policy is exhausted or isn't defined.
+        self.catch: Optional[CatchDecl] = None
+
+        # TimeoutSeconds (Optional)
+        # If the state_task runs longer than the specified seconds, this state fails with a States.Timeout error name.
+        # Must be a positive, non-zero integer. If not provided, the default value is 99999999. The count begins after
+        # the state_task has been started, for example, when ActivityStarted or LambdaFunctionStarted are logged in the
+        # Execution event history.
+        # TimeoutSecondsPath (Optional)
+        # If you want to provide a timeout value dynamically from the state input using a reference path, use
+        # TimeoutSecondsPath. When resolved, the reference path must select fields whose values are positive integers.
+        # A Task state cannot include both TimeoutSeconds and TimeoutSecondsPath
+        # TimeoutSeconds and TimeoutSecondsPath fields are encoded by the timeout type.
+        self.timeout: Timeout = TimeoutSeconds(
+            timeout_seconds=TimeoutSeconds.DEFAULT_TIMEOUT_SECONDS
+        )
+
+        # HeartbeatSeconds (Optional)
+        # If more time than the specified seconds elapses between heartbeats from the task, this state fails with a
+        # States.Timeout error name. Must be a positive, non-zero integer less than the number of seconds specified in
+        # the TimeoutSeconds field. If not provided, the default value is 99999999. For Activities, the count begins
+        # when GetActivityTask receives a token and ActivityStarted is logged in the Execution event history.
+        # HeartbeatSecondsPath (Optional)
+        # If you want to provide a heartbeat value dynamically from the state input using a reference path, use
+        # HeartbeatSecondsPath. When resolved, the reference path must select fields whose values are positive integers.
+        # A Task state cannot include both HeartbeatSeconds and HeartbeatSecondsPath
+        # HeartbeatSeconds and HeartbeatSecondsPath fields are encoded by the Heartbeat type.
+        self.heartbeat: Optional[Heartbeat] = None
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super().from_state_props(state_props=state_props)
+        self.result_path = state_props.get(ResultPath) or ResultPath(
+            result_path_src=ResultPath.DEFAULT_PATH
+        )
+        self.result_selector = state_props.get(ResultSelector)
+        self.retry = state_props.get(RetryDecl)
+        self.catch = state_props.get(CatchDecl)
+
+        # If provided, the "HeartbeatSeconds" interval MUST be smaller than the "TimeoutSeconds" value.
+        # If not provided, the default value of "TimeoutSeconds" is 60.
+        timeout = state_props.get(Timeout)
+        heartbeat = state_props.get(Heartbeat)
+        if isinstance(timeout, TimeoutSeconds) and isinstance(
+            heartbeat, HeartbeatSeconds
+        ):
+            if timeout.timeout_seconds <= heartbeat.heartbeat_seconds:
+                raise RuntimeError(
+                    f"'HeartbeatSeconds' interval MUST be smaller than the 'TimeoutSeconds' value, "
+                    f"got '{timeout.timeout_seconds}' and '{heartbeat.heartbeat_seconds}' respectively."
+                )
+        if heartbeat is not None and timeout is None:
+            timeout = TimeoutSeconds(timeout_seconds=60, is_default=True)
+
+        if timeout is not None:
+            self.timeout = timeout
+        if heartbeat is not None:
+            self.heartbeat = heartbeat
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, FailureEventException):
+            return ex.failure_event
+        LOG.warning(
+            "State Task encountered an unhandled exception that lead to a State.Runtime error."
+        )
+        return FailureEvent(
+            error_name=StatesErrorName(typ=StatesErrorNameType.StatesRuntime),
+            event_type=HistoryEventType.TaskFailed,
+            event_details=EventDetails(
+                taskFailedEventDetails=TaskFailedEventDetails(
+                    error=StatesErrorNameType.StatesRuntime.to_name(),
+                    cause=str(ex),
+                )
+            ),
+        )
+
+    @abc.abstractmethod
+    def _eval_execution(self, env: Environment) -> None:
+        ...
+
+    def _handle_retry(
+        self, env: Environment, failure_event: FailureEvent
+    ) -> RetryOutcome:
+        env.stack.append(failure_event.error_name)
+        self.retry.eval(env)
+        res: RetryOutcome = env.stack.pop()
+        if res == RetryOutcome.CanRetry:
+            retry_count = env.context_object_manager.context_object["State"][
+                "RetryCount"
+            ]
+            env.context_object_manager.context_object["State"]["RetryCount"] = (
+                retry_count + 1
+            )
+        return res
+
+    def _handle_catch(
+        self, env: Environment, failure_event: FailureEvent
+    ) -> CatchOutcome:
+        env.stack.append(failure_event)
+        self.catch.eval(env)
+        res: CatchOutcome = env.stack.pop()
+        return res
+
+    def _handle_uncaught(self, env: Environment, failure_event: FailureEvent) -> None:
+        self._terminate_with_event(env=env, failure_event=failure_event)
+
+    @staticmethod
+    def _terminate_with_event(env: Environment, failure_event: FailureEvent) -> None:
+        raise FailureEventException(failure_event=failure_event)
+
+    def _evaluate_with_timeout(self, env: Environment) -> None:
+        self.timeout.eval(env=env)
+        timeout_seconds: int = env.stack.pop()
+
+        frame: Environment = env.open_frame()
+        frame.inp = copy.deepcopy(env.inp)
+        frame.stack = copy.deepcopy(env.stack)
+        execution_outputs: List[Any] = list()
+        execution_exceptions: List[Optional[Exception]] = [None]
+        terminated_event = threading.Event()
+
+        def _exec_and_notify():
+            try:
+                self._eval_execution(frame)
+                execution_outputs.extend(frame.stack)
+            except Exception as ex:
+                execution_exceptions.append(ex)
+            terminated_event.set()
+
+        thread = Thread(target=_exec_and_notify)
+        thread.start()
+        finished_on_time: bool = terminated_event.wait(timeout_seconds)
+        frame.set_ended()
+        env.close_frame(frame)
+
+        execution_exception = execution_exceptions.pop()
+        if execution_exception:
+            raise execution_exception
+
+        if not finished_on_time:
+            raise EvalTimeoutError()
+
+        execution_output = execution_outputs.pop()
+        env.stack.append(execution_output)
+
+        if self.result_selector:
+            self.result_selector.eval(env=env)
+
+        if self.result_path:
+            self.result_path.eval(env)
+        else:
+            res = env.stack.pop()
+            env.inp = res
+
+    def _eval_state(self, env: Environment) -> None:
+        # Initialise the retry counter for execution states.
+        env.context_object_manager.context_object["State"]["RetryCount"] = 0
+
+        # Attempt to evaluate the state's logic through until it's successful, caught, or retries have run out.
+        while True:
+            try:
+                self._evaluate_with_timeout(env)
+                break
+            except Exception as ex:
+                failure_event: FailureEvent = self._from_error(env=env, ex=ex)
+                env.event_history.add_event(
+                    context=env.event_history_context,
+                    hist_type_event=failure_event.event_type,
+                    event_detail=failure_event.event_details,
+                )
+
+                if self.retry:
+                    retry_outcome: RetryOutcome = self._handle_retry(
+                        env=env, failure_event=failure_event
+                    )
+                    if retry_outcome == RetryOutcome.CanRetry:
+                        continue
+
+                if self.catch:
+                    catch_outcome: CatchOutcome = self._handle_catch(
+                        env=env, failure_event=failure_event
+                    )
+                    if catch_outcome == CatchOutcome.Caught:
+                        break
+
+                self._handle_uncaught(env=env, failure_event=failure_event)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/execution_type.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/execution_type.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/execution_type.py
@@ -0,0 +1,7 @@
+from enum import Enum
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+
+
+class ExecutionType(Enum):
+    Standard = ASLLexer.STANDARD
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/item_reader_decl.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/item_reader_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/item_reader_decl.py
@@ -0,0 +1,69 @@
+import copy
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.reader_config_decl import (
+    ReaderConfig,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_eval import (
+    ResourceEval,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_eval_factory import (
+    resource_eval_for,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer import (
+    ResourceOutputTransformer,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer_factory import (
+    resource_output_transformer_for,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    Resource,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ItemReader(EvalComponent):
+    resource_eval: Final[ResourceEval]
+    parameters: Final[Optional[Parameters]]
+    reader_config: Final[Optional[ReaderConfig]]
+    resource_output_transformer: Optional[ResourceOutputTransformer]
+
+    def __init__(
+        self,
+        resource: Resource,
+        parameters: Optional[Parameters],
+        reader_config: Optional[ReaderConfig],
+    ):
+        self.resource_eval = resource_eval_for(resource=resource)
+        self.parameters = parameters
+        self.reader_config = reader_config
+
+        self.resource_output_transformer = None
+        if self.reader_config:
+            self.resource_output_transformer = resource_output_transformer_for(
+                input_type=self.reader_config.input_type
+            )
+
+    @property
+    def resource(self):
+        return self.resource_eval.resource
+
+    def __str__(self):
+        class_dict = copy.deepcopy(self.__dict__)
+        del class_dict["resource_eval"]
+        class_dict["resource"] = self.resource
+        return f"({self.__class__.__name__}| {class_dict})"
+
+    def _eval_body(self, env: Environment) -> None:
+        if self.parameters:
+            self.parameters.eval(env=env)
+        else:
+            env.stack.append(dict())
+
+        self.resource_eval.eval_resource(env=env)
+
+        if self.reader_config:
+            self.reader_config.eval(env=env)
+            self.resource_output_transformer.eval(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/csv_header_location.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/csv_header_location.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/csv_header_location.py
@@ -0,0 +1,18 @@
+import enum
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class CSVHeaderLocationValue(enum.Enum):
+    FIRST_ROW = "FIRST_ROW"
+    GIVEN = "GIVEN"
+
+
+class CSVHeaderLocation(Component):
+    csv_header_location_value: Final[CSVHeaderLocationValue]
+
+    def __init__(self, csv_header_location_value: str):
+        self.csv_header_location_value = CSVHeaderLocationValue(
+            csv_header_location_value
+        )  # Pass error upstream.
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/csv_headers.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/csv_headers.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/csv_headers.py
@@ -0,0 +1,10 @@
+from typing import Final, List
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class CSVHeaders(Component):
+    header_names: Final[List[str]]
+
+    def __init__(self, header_names: List[str]):
+        self.header_names = header_names
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/input_type.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/input_type.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/input_type.py
@@ -0,0 +1,27 @@
+import enum
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class InputTypeValue(enum.Enum):
+    """
+    Represents the supported InputType values for ItemReader configurations.
+    """
+
+    # TODO: add support for MANIFEST InputTypeValue.
+    CSV = "CSV"
+    JSON = "JSON"
+
+
+class InputType(Component):
+    """
+    "InputType" Specifies the type of Amazon S3 data source, such as CSV file, object, JSON file, or an
+    Amazon S3 inventory list. In Workflow Studio, you can select an input type from the Amazon S3 item
+    source dropdown list under the Item source field.
+    """
+
+    input_type_value: Final[InputTypeValue]
+
+    def __init__(self, input_type: str):
+        self.input_type_value = InputTypeValue(input_type)  # Pass error upstream.
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/max_items_decl.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/max_items_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/max_items_decl.py
@@ -0,0 +1,55 @@
+import abc
+from typing import Final
+
+from jsonpath_ng import parse
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class MaxItemsDecl(EvalComponent, abc.ABC):
+    @abc.abstractmethod
+    def _get_value(self, env: Environment) -> int:
+        ...
+
+    def _eval_body(self, env: Environment) -> None:
+        max_items: int = self._get_value(env=env)
+        env.stack.append(max_items)
+
+
+class MaxItems(MaxItemsDecl):
+    """
+    "MaxItems": Limits the number of data items passed to the Map state. For example, suppose that you provide a
+    CSV file that contains 1000 rows and specify a limit of 100. Then, the interpreter passes only 100 rows to the
+    Map state. The Map state processes items in sequential order, starting after the header row.
+    Currently, you can specify a limit of up to 100,000,000
+    """
+
+    MAX_VALUE: Final[int] = 100_000_000
+
+    max_items: Final[int]
+
+    def __init__(self, max_items: int = MAX_VALUE):
+        if max_items < 0 or max_items > MaxItems.MAX_VALUE:
+            raise ValueError(
+                f"MaxItems value MUST be a non-negative integer "
+                f"non greater than '{MaxItems.MAX_VALUE}', got '{max_items}'."
+            )
+        self.max_items = max_items
+
+    def _get_value(self, env: Environment) -> int:
+        return self.max_items
+
+
+class MaxItemsPath(MaxItemsDecl):
+    """
+    "MaxItemsPath": computes a MaxItems value equal to the reference path it points to.
+    """
+
+    def __init__(self, path: str):
+        self.path: Final[str] = path
+
+    def _get_value(self, env: Environment) -> int:
+        input_expr = parse(self.path)
+        max_items = input_expr.find(env.inp)
+        return max_items
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/reader_config_decl.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/reader_config_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/reader_config/reader_config_decl.py
@@ -0,0 +1,76 @@
+from typing import Final, List, Optional, TypedDict
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.csv_header_location import (
+    CSVHeaderLocation,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.csv_headers import (
+    CSVHeaders,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.input_type import (
+    InputType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.max_items_decl import (
+    MaxItems,
+    MaxItemsDecl,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class InputTypeOutput(str):
+    CSV = "CSV"
+    JSON = "JSON"
+
+
+class CSVHeaderLocationOutput(str):
+    FIRST_ROW = "FIRST_ROW"
+    GIVEN = "GIVEN"
+
+
+CSVHeadersOutput = List[str]
+MaxItemsValueOutput = int
+
+
+class ReaderConfigOutput(TypedDict):
+    InputType: InputTypeOutput
+    CSVHeaderLocation: CSVHeaderLocationOutput
+    CSVHeaders: Optional[CSVHeadersOutput]
+    MaxItemsValue: MaxItemsValueOutput
+
+
+class ReaderConfig(EvalComponent):
+    input_type: Final[InputType]
+    max_items: Final[MaxItemsDecl]
+    csv_header_location: Final[CSVHeaderLocation]
+    csv_headers: Optional[CSVHeaders]
+
+    def __init__(
+        self,
+        input_type: InputType,
+        csv_header_location: CSVHeaderLocation,
+        csv_headers: Optional[CSVHeaders],
+        max_items: Optional[MaxItemsDecl],
+    ):
+        self.input_type = input_type
+        self.max_items = max_items or MaxItems()
+        self.csv_header_location = csv_header_location
+        self.csv_headers = csv_headers
+        # TODO: verify behaviours:
+        #  - csv fields are declared with json input type
+        #  - headers are declared with first_fow location set
+
+    def _eval_body(self, env: Environment) -> None:
+        self.max_items.eval(env=env)
+        max_items_value: int = env.stack.pop()
+
+        reader_config_output = ReaderConfigOutput(
+            InputType=InputTypeOutput(self.input_type.input_type_value),
+            MaxItemsValue=max_items_value,
+        )
+        if self.csv_header_location:
+            reader_config_output[
+                "CSVHeaderLocation"
+            ] = self.csv_header_location.csv_header_location_value.value
+        if self.csv_headers:
+            reader_config_output["CSVHeaders"] = self.csv_headers.header_names
+        env.stack.append(reader_config_output)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval.py
@@ -0,0 +1,17 @@
+import abc
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ServiceResource,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ResourceEval(abc.ABC):
+    resource: Final[ServiceResource]
+
+    def __init__(self, resource: ServiceResource):
+        self.resource = resource
+
+    def eval_resource(self, env: Environment) -> None:
+        ...
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval_factory.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval_factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval_factory.py
@@ -0,0 +1,19 @@
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_eval import (
+    ResourceEval,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_eval_s3 import (
+    ResourceEvalS3,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    Resource,
+    ServiceResource,
+)
+
+
+def resource_eval_for(resource: Resource) -> ResourceEval:
+    if isinstance(resource, ServiceResource):
+        if resource.service_name == "s3":
+            return ResourceEvalS3(resource=resource)
+    raise ValueError(
+        f"ItemReader's Resource fields must be states service resource, instead got '{resource.resource_arn}'."
+    )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval_s3.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval_s3.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_eval_s3.py
@@ -0,0 +1,64 @@
+from __future__ import annotations
+
+from typing import Callable, Final
+
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_eval import (
+    ResourceEval,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+from moto.stepfunctions.parser.utils import camel_to_snake_case, to_str
+
+
+class ResourceEvalS3(ResourceEval):
+    _HANDLER_REFLECTION_PREFIX: Final[str] = "_handle_"
+    _API_ACTION_HANDLER_TYPE = Callable[[Environment, ResourceRuntimePart], None]
+
+    @staticmethod
+    def _get_s3_client(resource_runtime_part: ResourceRuntimePart):
+        return boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service="s3",
+        )
+
+    @staticmethod
+    def _handle_get_object(
+        env: Environment, resource_runtime_part: ResourceRuntimePart
+    ) -> None:
+        s3_client = ResourceEvalS3._get_s3_client(
+            resource_runtime_part=resource_runtime_part
+        )
+        parameters = env.stack.pop()
+        response = s3_client.get_object(**parameters)
+        content = to_str(response["Body"].read())
+        env.stack.append(content)
+
+    @staticmethod
+    def _handle_list_objects_v2(
+        env: Environment, resource_runtime_part: ResourceRuntimePart
+    ) -> None:
+        s3_client = ResourceEvalS3._get_s3_client(
+            resource_runtime_part=resource_runtime_part
+        )
+        parameters = env.stack.pop()
+        response = s3_client.list_objects_v2(**parameters)
+        contents = response["Contents"]
+        env.stack.append(contents)
+
+    def _get_api_action_handler(self) -> ResourceEvalS3._API_ACTION_HANDLER_TYPE:
+        api_action = camel_to_snake_case(self.resource.api_action).strip()
+        handler_name = ResourceEvalS3._HANDLER_REFLECTION_PREFIX + api_action
+        resolver_handler = getattr(self, handler_name)
+        if resolver_handler is None:
+            raise ValueError(f"Unknown s3 action '{api_action}'.")
+        return resolver_handler
+
+    def eval_resource(self, env: Environment) -> None:
+        self.resource.eval(env=env)
+        resource_runtime_part: ResourceRuntimePart = env.stack.pop()
+        resolver_handler = self._get_api_action_handler()
+        resolver_handler(env, resource_runtime_part)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer.py
@@ -0,0 +1,7 @@
+import abc
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+
+
+class ResourceOutputTransformer(EvalComponent, abc.ABC):
+    ...
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_csv.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_csv.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_csv.py
@@ -0,0 +1,71 @@
+import csv
+import io
+from collections import OrderedDict
+
+from moto.stepfunctions.parser.api import HistoryEventType, MapRunFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.reader_config_decl import (
+    CSVHeaderLocationOutput,
+    ReaderConfigOutput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer import (
+    ResourceOutputTransformer,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class ResourceOutputTransformerCSV(ResourceOutputTransformer):
+    def _eval_body(self, env: Environment) -> None:
+        reader_config: ReaderConfigOutput = env.stack.pop()
+        resource_value: str = env.stack.pop()
+
+        csv_file = io.StringIO(resource_value)
+        csv_reader = csv.reader(csv_file)
+
+        location = reader_config["CSVHeaderLocation"]
+        if location == CSVHeaderLocationOutput.FIRST_ROW:
+            headers = next(csv_reader)
+        elif location == CSVHeaderLocationOutput.GIVEN:
+            headers = reader_config["CSVHeaders"]
+        else:
+            raise ValueError(f"Unknown CSVHeaderLocation value '{location}'.")
+
+        if len(set(headers)) < len(headers):
+            error_name = StatesErrorName(typ=StatesErrorNameType.StatesItemReaderFailed)
+            failure_event = FailureEvent(
+                error_name=error_name,
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    mapRunFailedEventDetails=MapRunFailedEventDetails(
+                        error=error_name.error_name,
+                        cause="CSV headers cannot contain duplicates.",
+                    )
+                ),
+            )
+            raise FailureEventException(failure_event=failure_event)
+
+        transformed_outputs = list()
+        for row in csv_reader:
+            transformed_output = dict()
+            for i, header in enumerate(headers):
+                transformed_output[header] = row[i] if i < len(row) else ""
+            transformed_outputs.append(
+                OrderedDict(
+                    sorted(
+                        transformed_output.items(),
+                        key=lambda item: (item[0].isalpha(), item[0]),
+                    )
+                )
+            )
+
+        env.stack.append(transformed_outputs)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_factory.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_factory.py
@@ -0,0 +1,22 @@
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.input_type import (
+    InputType,
+    InputTypeValue,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer import (
+    ResourceOutputTransformer,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer_csv import (
+    ResourceOutputTransformerCSV,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer_json import (
+    ResourceOutputTransformerJson,
+)
+
+
+def resource_output_transformer_for(input_type: InputType) -> ResourceOutputTransformer:
+    if input_type.input_type_value == InputTypeValue.CSV:
+        return ResourceOutputTransformerCSV()
+    elif input_type.input_type_value == InputTypeValue.JSON:
+        return ResourceOutputTransformerJson()
+    else:
+        raise ValueError(f"Unknown InputType value: '{input_type.input_type_value}'.")
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_json.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_json.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_reader/resource_eval/resource_output_transformer/resource_output_transformer_json.py
@@ -0,0 +1,47 @@
+import json
+
+from moto.stepfunctions.parser.api import HistoryEventType, MapRunFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.reader_config_decl import (
+    ReaderConfigOutput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.resource_eval.resource_output_transformer.resource_output_transformer import (
+    ResourceOutputTransformer,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class ResourceOutputTransformerJson(ResourceOutputTransformer):
+    def _eval_body(self, env: Environment) -> None:
+        _: ReaderConfigOutput = (
+            env.stack.pop()
+        )  # Not used, but expected by workflow (hence should consume the stack).
+        resource_value: str = env.stack.pop()
+
+        json_list = json.loads(resource_value)
+
+        if not isinstance(json_list, list):
+            error_name = StatesErrorName(typ=StatesErrorNameType.StatesItemReaderFailed)
+            failure_event = FailureEvent(
+                error_name=error_name,
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    mapRunFailedEventDetails=MapRunFailedEventDetails(
+                        error=error_name.error_name,
+                        cause="Attempting to map over non-iterable node.",
+                    )
+                ),
+            )
+            raise FailureEventException(failure_event=failure_event)
+
+        env.stack.append(json_list)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_selector.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_selector.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/item_selector.py
@@ -0,0 +1,15 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadtmpl.payload_tmpl import (
+    PayloadTmpl,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ItemSelector(EvalComponent):
+    def __init__(self, payload_tmpl: PayloadTmpl):
+        self.payload_tmpl: Final[PayloadTmpl] = payload_tmpl
+
+    def _eval_body(self, env: Environment) -> None:
+        self.payload_tmpl.eval(env=env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/distributed_iteration_component.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/distributed_iteration_component.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/distributed_iteration_component.py
@@ -0,0 +1,193 @@
+from __future__ import annotations
+
+import abc
+import json
+import threading
+from typing import Any, Final, List, Optional
+
+from moto.stepfunctions.parser.api import (
+    HistoryEventType,
+    MapRunFailedEventDetails,
+    MapRunStartedEventDetails,
+    MapRunStatus,
+)
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.item_reader_decl import (
+    ItemReader,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.inline_iteration_component import (
+    InlineIterationComponent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.map_run_record import (
+    MapRunRecord,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_worker import (
+    IterationWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.job import (
+    Job,
+    JobPool,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.max_concurrency import (
+    MaxConcurrency,
+)
+from moto.stepfunctions.parser.asl.component.states import States
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.eval.event.event_history import EventHistory
+
+
+class DistributedIterationComponentEvalInput:
+    state_name: Final[str]
+    max_concurrency: Final[int]
+    item_reader: Final[ItemReader]
+
+    def __init__(self, state_name: str, max_concurrency: int, item_reader: ItemReader):
+        self.state_name = state_name
+        self.max_concurrency = max_concurrency
+        self.item_reader = item_reader
+
+
+class DistributedIterationComponent(InlineIterationComponent, abc.ABC):
+    _eval_input: Optional[DistributedIterationComponentEvalInput]
+    _mutex: Final[threading.Lock]
+    _map_run_record: Optional[MapRunRecord]
+    _workers: List[IterationWorker]
+
+    def __init__(self, start_at: StartAt, states: States, comment: Comment):
+        super().__init__(start_at=start_at, states=states, comment=comment)
+        self._mutex = threading.Lock()
+        self._map_run_record = None
+        self._workers = list()
+
+    @abc.abstractmethod
+    def _create_worker(self, env: Environment) -> IterationWorker:
+        ...
+
+    def _launch_worker(self, env: Environment) -> IterationWorker:
+        worker = super()._launch_worker(env=env)
+        self._workers.append(worker)
+        return worker
+
+    def _set_active_workers(self, workers_number: int, env: Environment) -> None:
+        with self._mutex:
+            current_workers_number = len(self._workers)
+            workers_diff = workers_number - current_workers_number
+            if workers_diff > 0:
+                for _ in range(workers_diff):
+                    self._launch_worker(env=env)
+            elif workers_diff < 0:
+                deletion_workers = list(self._workers)[workers_diff:]
+                for worker in deletion_workers:
+                    worker.sig_stop()
+                    self._workers.remove(worker)
+
+    def _map_run(self, env: Environment) -> None:
+        input_items: List[json] = env.stack.pop()
+
+        input_item_prog: Final[Program] = Program(
+            start_at=self._start_at,
+            states=self._states,
+            timeout_seconds=None,
+            comment=self._comment,
+        )
+        self._job_pool = JobPool(job_program=input_item_prog, job_inputs=input_items)
+
+        # TODO: add watch on map_run_record update event and adjust the number of running workers accordingly.
+        max_concurrency = self._map_run_record.max_concurrency
+        workers_number = (
+            len(input_items)
+            if max_concurrency == MaxConcurrency.DEFAULT
+            else max_concurrency
+        )
+        self._set_active_workers(workers_number=workers_number, env=env)
+
+        self._job_pool.await_jobs()
+
+        worker_exception: Optional[Exception] = self._job_pool.get_worker_exception()
+        if worker_exception is not None:
+            raise worker_exception
+
+        closed_jobs: List[Job] = self._job_pool.get_closed_jobs()
+        outputs: List[Any] = [closed_job.job_output for closed_job in closed_jobs]
+
+        env.stack.append(outputs)
+
+    def _eval_body(self, env: Environment) -> None:
+        self._eval_input = env.stack.pop()
+
+        self._map_run_record = MapRunRecord(
+            state_machine_arn=env.context_object_manager.context_object["StateMachine"][
+                "Id"
+            ],
+            execution_arn=env.context_object_manager.context_object["Execution"]["Id"],
+            max_concurrency=self._eval_input.max_concurrency,
+        )
+        env.map_run_record_pool_manager.add(self._map_run_record)
+
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.MapRunStarted,
+            event_detail=EventDetails(
+                mapRunStartedEventDetails=MapRunStartedEventDetails(
+                    mapRunArn=self._map_run_record.map_run_arn
+                )
+            ),
+        )
+
+        execution_event_history = env.event_history
+        try:
+            self._eval_input.item_reader.eval(env=env)
+            # TODO: investigate if this is truly propagated also to eventual sub programs in map run states.
+            env.event_history = EventHistory()
+            self._map_run(env=env)
+
+        except FailureEventException as failure_event_ex:
+            map_run_fail_event_detail = MapRunFailedEventDetails()
+
+            maybe_error_cause_pair = failure_event_ex.extract_error_cause_pair()
+            if maybe_error_cause_pair:
+                error, cause = maybe_error_cause_pair
+                if error:
+                    map_run_fail_event_detail["error"] = error
+                if cause:
+                    map_run_fail_event_detail["cause"] = cause
+
+            env.event_history = execution_event_history
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.MapRunFailed,
+                event_detail=EventDetails(
+                    mapRunFailedEventDetails=map_run_fail_event_detail
+                ),
+            )
+            self._map_run_record.set_stop(status=MapRunStatus.FAILED)
+            raise failure_event_ex
+
+        except Exception as ex:
+            env.event_history = execution_event_history
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.MapRunFailed,
+                event_detail=EventDetails(
+                    mapRunFailedEventDetails=MapRunFailedEventDetails()
+                ),
+            )
+            self._map_run_record.set_stop(status=MapRunStatus.FAILED)
+            raise ex
+        finally:
+            env.event_history = execution_event_history
+
+        # TODO: review workflow of program stops and maprunstops
+        # program_state = env.program_state()
+        # if isinstance(program_state, ProgramSucceeded)
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.MapRunSucceeded,
+        )
+        self._map_run_record.set_stop(status=MapRunStatus.SUCCEEDED)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/inline_iteration_component.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/inline_iteration_component.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/inline_iteration_component.py
@@ -0,0 +1,98 @@
+from __future__ import annotations
+
+import abc
+import json
+import threading
+from typing import Any, Final, List, Optional
+
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_component import (
+    IterationComponent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_worker import (
+    IterationWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.job import (
+    Job,
+    JobPool,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.max_concurrency import (
+    MaxConcurrency,
+)
+from moto.stepfunctions.parser.asl.component.states import States
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.utils import TMP_THREADS
+
+
+class InlineIterationComponentEvalInput:
+    state_name: Final[str]
+    max_concurrency: Final[int]
+    input_items: Final[List[json]]
+
+    def __init__(self, state_name: str, max_concurrency: int, input_items: List[json]):
+        self.state_name = state_name
+        self.max_concurrency = max_concurrency
+        self.input_items = input_items
+
+
+class InlineIterationComponent(IterationComponent, abc.ABC):
+    _eval_input: Optional[InlineIterationComponentEvalInput]
+    _job_pool: Optional[JobPool]
+
+    def __init__(
+        self,
+        start_at: StartAt,
+        states: States,
+        comment: Optional[Comment],
+    ):
+        super().__init__(start_at=start_at, states=states, comment=comment)
+        self._eval_input = None
+        self._job_pool = None
+
+    @abc.abstractmethod
+    def _create_worker(self, env: Environment) -> IterationWorker:
+        ...
+
+    def _launch_worker(self, env: Environment) -> IterationWorker:
+        worker = self._create_worker(env=env)
+        worker_thread = threading.Thread(target=worker.eval)
+        TMP_THREADS.append(worker_thread)
+        worker_thread.start()
+        return worker
+
+    def _eval_body(self, env: Environment) -> None:
+        self._eval_input = env.stack.pop()
+
+        max_concurrency: int = self._eval_input.max_concurrency
+        input_items: List[json] = self._eval_input.input_items
+
+        input_item_prog: Final[Program] = Program(
+            start_at=self._start_at,
+            states=self._states,
+            timeout_seconds=None,
+            comment=self._comment,
+        )
+        self._job_pool = JobPool(
+            job_program=input_item_prog, job_inputs=self._eval_input.input_items
+        )
+
+        number_of_workers = (
+            len(input_items)
+            if max_concurrency == MaxConcurrency.DEFAULT
+            else max_concurrency
+        )
+        for _ in range(number_of_workers):
+            self._launch_worker(env=env)
+
+        self._job_pool.await_jobs()
+
+        worker_exception: Optional[Exception] = self._job_pool.get_worker_exception()
+        if worker_exception is not None:
+            raise worker_exception
+
+        closed_jobs: List[Job] = self._job_pool.get_closed_jobs()
+        outputs: List[Any] = [closed_job.job_output for closed_job in closed_jobs]
+
+        env.stack.append(outputs)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/distributed_item_processor.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/distributed_item_processor.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/distributed_item_processor.py
@@ -0,0 +1,88 @@
+from __future__ import annotations
+
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.item_reader_decl import (
+    ItemReader,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.distributed_iteration_component import (
+    DistributedIterationComponent,
+    DistributedIterationComponentEvalInput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.distributed_item_processor_worker import (
+    DistributedItemProcessorWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.processor_config import (
+    ProcessorConfig,
+)
+from moto.stepfunctions.parser.asl.component.states import States
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+
+class DistributedItemProcessorEvalInput(DistributedIterationComponentEvalInput):
+    item_selector: Final[Optional[ItemSelector]]
+
+    def __init__(
+        self,
+        state_name: str,
+        max_concurrency: int,
+        item_reader: ItemReader,
+        item_selector: Optional[ItemSelector],
+    ):
+        super().__init__(
+            state_name=state_name,
+            max_concurrency=max_concurrency,
+            item_reader=item_reader,
+        )
+        self.item_selector = item_selector
+
+
+class DistributedItemProcessor(DistributedIterationComponent):
+    _processor_config: Final[ProcessorConfig]
+    _eval_input: Optional[DistributedItemProcessorEvalInput]
+
+    def __init__(
+        self,
+        start_at: StartAt,
+        states: States,
+        comment: Optional[Comment],
+        processor_config: ProcessorConfig,
+    ):
+        super().__init__(start_at=start_at, states=states, comment=comment)
+        self._processor_config = processor_config
+
+    @classmethod
+    def from_props(cls, props: TypedProps) -> DistributedItemProcessor:
+        item_processor = cls(
+            start_at=props.get(
+                typ=StartAt,
+                raise_on_missing=ValueError(
+                    f"Missing StartAt declaration in props '{props}'."
+                ),
+            ),
+            states=props.get(
+                typ=States,
+                raise_on_missing=ValueError(
+                    f"Missing States declaration in props '{props}'."
+                ),
+            ),
+            comment=props.get(Comment),
+            processor_config=props.get(ProcessorConfig),
+        )
+        return item_processor
+
+    def _create_worker(self, env: Environment) -> DistributedItemProcessorWorker:
+        return DistributedItemProcessorWorker(
+            work_name=self._eval_input.state_name,
+            job_pool=self._job_pool,
+            env=env,
+            item_reader=self._eval_input.item_reader,
+            item_selector=self._eval_input.item_selector,
+            map_run_record=self._map_run_record,
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/distributed_item_processor_worker.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/distributed_item_processor_worker.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/distributed_item_processor_worker.py
@@ -0,0 +1,139 @@
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.timeouts.timeout import (
+    EvalTimeoutError,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.item_reader_decl import (
+    ItemReader,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.inline_item_processor_worker import (
+    InlineItemProcessorWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.map_run_record import (
+    MapRunRecord,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.job import (
+    Job,
+    JobPool,
+)
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import Item, Map
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.program_state import (
+    ProgramError,
+    ProgramState,
+    ProgramStopped,
+)
+
+
+class DistributedItemProcessorWorker(InlineItemProcessorWorker):
+    _item_reader: Final[ItemReader]
+    _map_run_record: MapRunRecord
+
+    def __init__(
+        self,
+        work_name: str,
+        job_pool: JobPool,
+        env: Environment,
+        item_reader: ItemReader,
+        item_selector: Optional[ItemSelector],
+        map_run_record: MapRunRecord,
+    ):
+        super().__init__(
+            work_name=work_name, job_pool=job_pool, env=env, item_selector=item_selector
+        )
+        self._item_reader = item_reader
+        self._map_run_record = map_run_record
+
+    def _eval_job(self, env: Environment, job: Job) -> None:
+        self._map_run_record.item_counter.total.count()
+        self._map_run_record.item_counter.running.count()
+
+        self._map_run_record.execution_counter.total.count()
+        self._map_run_record.execution_counter.running.count()
+
+        job_output = None
+        try:
+            env.context_object_manager.context_object["Map"] = Map(
+                Item=Item(Index=job.job_index, Value=job.job_input)
+            )
+
+            env.inp = job.job_input
+            env.stack.append(env.inp)
+            self._eval_input(env_frame=env)
+
+            job.job_program.eval(env)
+
+            # TODO: verify behaviour with all of these scenarios.
+            end_program_state: ProgramState = env.program_state()
+            if isinstance(end_program_state, ProgramError):
+                self._map_run_record.execution_counter.failed.count()
+                self._map_run_record.item_counter.failed.count()
+                job_output = None
+            elif isinstance(end_program_state, ProgramStopped):
+                self._map_run_record.execution_counter.aborted.count()
+                self._map_run_record.item_counter.aborted.count()
+            else:
+                self._map_run_record.item_counter.succeeded.count()
+                self._map_run_record.item_counter.results_written.count()
+
+                self._map_run_record.execution_counter.succeeded.count()
+                self._map_run_record.execution_counter.results_written.count()
+                self._map_run_record.execution_counter.running.offset(-1)
+
+                job_output = env.inp
+
+        except EvalTimeoutError:
+            self._map_run_record.item_counter.timed_out.count()
+
+        except FailureEventException:
+            self._map_run_record.item_counter.failed.count()
+
+        except Exception:
+            self._map_run_record.item_counter.failed.count()
+
+        finally:
+            self._map_run_record.item_counter.running.offset(-1)
+            job.job_output = job_output
+
+    def _eval_pool(self, job: Optional[Job], worker_frame: Environment) -> None:
+        # Note: the frame has to be closed before the job, to ensure the owner environment is correctly updated
+        #  before the evaluation continues; map states await for job termination not workers termination.
+        if job is None:
+            self._env.delete_frame(worker_frame)
+            return
+
+        # Evaluate the job.
+        job_frame = worker_frame.open_frame()
+        self._eval_job(env=job_frame, job=job)
+        worker_frame.delete_frame(job_frame)
+
+        # Evaluation terminates here due to exception in job.
+        if isinstance(job.job_output, Exception):
+            self._env.delete_frame(worker_frame)
+            self._job_pool.close_job(job)
+            return
+
+        # Worker was stopped.
+        if self.stopped():
+            self._env.delete_frame(worker_frame)
+            self._job_pool.close_job(job)
+            return
+
+        next_job: Job = self._job_pool.next_job()
+        # Iteration will terminate after this job.
+        if next_job is None:
+            self._env.delete_frame(worker_frame)
+            self._job_pool.close_job(job)
+            return
+
+        self._job_pool.close_job(job)
+        self._eval_pool(job=next_job, worker_frame=worker_frame)
+
+    def eval(self) -> None:
+        self._eval_pool(job=self._job_pool.next_job(), worker_frame=self._env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/inline_item_processor.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/inline_item_processor.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/inline_item_processor.py
@@ -0,0 +1,81 @@
+from __future__ import annotations
+
+import json
+import logging
+from typing import Final, List, Optional
+
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.inline_iteration_component import (
+    InlineIterationComponent,
+    InlineIterationComponentEvalInput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.inline_item_processor_worker import (
+    InlineItemProcessorWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.processor_config import (
+    ProcessorConfig,
+)
+from moto.stepfunctions.parser.asl.component.states import States
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+LOG = logging.getLogger(__name__)
+
+
+class InlineItemProcessorEvalInput(InlineIterationComponentEvalInput):
+    item_selector: Final[Optional[ItemSelector]]
+
+    def __init__(
+        self,
+        state_name: str,
+        max_concurrency: int,
+        input_items: List[json],
+        item_selector: Optional[ItemSelector],
+    ):
+        super().__init__(
+            state_name=state_name,
+            max_concurrency=max_concurrency,
+            input_items=input_items,
+        )
+        self.item_selector = item_selector
+
+
+class InlineItemProcessor(InlineIterationComponent):
+    _processor_config: Final[ProcessorConfig]
+    _eval_input: Optional[InlineItemProcessorEvalInput]
+
+    def __init__(
+        self,
+        start_at: StartAt,
+        states: States,
+        comment: Optional[Comment],
+        processor_config: ProcessorConfig,
+    ):
+        super().__init__(start_at=start_at, states=states, comment=comment)
+        self._processor_config = processor_config
+
+    @classmethod
+    def from_props(cls, props: TypedProps) -> InlineItemProcessor:
+        if not props.get(States):
+            raise ValueError(f"Missing States declaration in props '{props}'.")
+        if not props.get(StartAt):
+            raise ValueError(f"Missing StartAt declaration in props '{props}'.")
+        item_processor = cls(
+            start_at=props.get(StartAt),
+            states=props.get(States),
+            comment=props.get(Comment),
+            processor_config=props.get(ProcessorConfig),
+        )
+        return item_processor
+
+    def _create_worker(self, env: Environment) -> InlineItemProcessorWorker:
+        return InlineItemProcessorWorker(
+            work_name=self._eval_input.state_name,
+            job_pool=self._job_pool,
+            env=env,
+            item_selector=self._eval_input.item_selector,
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/inline_item_processor_worker.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/inline_item_processor_worker.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/inline_item_processor_worker.py
@@ -0,0 +1,39 @@
+import copy
+import logging
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_worker import (
+    IterationWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.job import (
+    JobPool,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+LOG = logging.getLogger(__name__)
+
+
+class InlineItemProcessorWorker(IterationWorker):
+    _item_selector: Final[Optional[ItemSelector]]
+
+    def __init__(
+        self,
+        work_name: str,
+        job_pool: JobPool,
+        env: Environment,
+        item_selector: Optional[ItemSelector],
+    ):
+        super().__init__(work_name=work_name, job_pool=job_pool, env=env)
+        self._item_selector = item_selector
+
+    def _eval_input(self, env_frame: Environment) -> None:
+        if self._item_selector:
+            map_state_input = self._env.stack[-1]
+            env_frame.inp = copy.deepcopy(map_state_input)
+            env_frame.stack.append(env_frame.inp)
+            self._item_selector.eval(env_frame)
+            env_frame.inp = env_frame.stack.pop()
+            env_frame.stack.append(env_frame.inp)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/item_processor_decl.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/item_processor_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/item_processor_decl.py
@@ -0,0 +1,25 @@
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.processor_config import (
+    ProcessorConfig,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_declaration import (
+    IterationDecl,
+)
+from moto.stepfunctions.parser.asl.component.states import States
+
+
+class ItemProcessorDecl(IterationDecl):
+    processor_config: Final[ProcessorConfig]
+
+    def __init__(
+        self,
+        comment: Optional[Comment],
+        start_at: StartAt,
+        states: States,
+        processor_config: Optional[ProcessorConfig],
+    ):
+        super().__init__(start_at=start_at, comment=comment, states=states)
+        self.processor_config = processor_config or ProcessorConfig()
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/item_processor_factory.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/item_processor_factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/item_processor_factory.py
@@ -0,0 +1,38 @@
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.distributed_item_processor import (
+    DistributedItemProcessor,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.inline_item_processor import (
+    InlineItemProcessor,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.item_processor_decl import (
+    ItemProcessorDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_component import (
+    IterationComponent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.mode import (
+    Mode,
+)
+
+
+def from_item_processor_decl(
+    item_processor_decl: ItemProcessorDecl,
+) -> IterationComponent:
+    if item_processor_decl.processor_config.mode == Mode.Inline:
+        return InlineItemProcessor(
+            start_at=item_processor_decl.start_at,
+            states=item_processor_decl.states,
+            comment=item_processor_decl.comment,
+            processor_config=item_processor_decl.processor_config,
+        )
+    elif item_processor_decl.processor_config.mode == Mode.Distributed:
+        return DistributedItemProcessor(
+            start_at=item_processor_decl.start_at,
+            states=item_processor_decl.states,
+            comment=item_processor_decl.comment,
+            processor_config=item_processor_decl.processor_config,
+        )
+    else:
+        raise ValueError(
+            f"Unknown Mode value '{item_processor_decl.processor_config.mode}'."
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/map_run_record.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/map_run_record.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/map_run_record.py
@@ -0,0 +1,192 @@
+import abc
+import datetime
+import threading
+from collections import OrderedDict
+from typing import Any, Dict, Final, List, Optional, Tuple
+
+from moto.moto_api._internal import mock_random
+from moto.stepfunctions.parser.api import (
+    MapRunExecutionCounts,
+    MapRunItemCounts,
+    MapRunStatus,
+    Timestamp,
+)
+
+
+class Counter:
+    _mutex: Final[threading.Lock]
+    _count: int
+
+    def __init__(self):
+        self._mutex = threading.Lock()
+        self._count = 0
+
+    def offset(self, offset: int) -> None:
+        with self._mutex:
+            self._count = self._count + offset
+
+    def count(self, increment: int = 1) -> None:
+        with self._mutex:
+            self._count += increment
+
+    def get(self) -> int:
+        return self._count
+
+
+class ProgressCounter(abc.ABC):
+    aborted: Final[Counter]
+    failed: Final[Counter]
+    pending: Final[Counter]
+    results_written: Final[Counter]
+    running: Final[Counter]
+    succeeded: Final[Counter]
+    timed_out: Final[Counter]
+    total: Final[Counter]
+
+    def __init__(self):
+        self.aborted = Counter()
+        self.failed = Counter()
+        self.pending = Counter()
+        self.results_written = Counter()
+        self.running = Counter()
+        self.succeeded = Counter()
+        self.timed_out = Counter()
+        self.total = Counter()
+
+
+class ExecutionCounter(ProgressCounter):
+    def describe(self) -> MapRunExecutionCounts:
+        return MapRunExecutionCounts(
+            aborted=self.aborted.get(),
+            failed=self.failed.get(),
+            pending=self.pending.get(),
+            resultsWritten=self.results_written.get(),
+            running=self.running.get(),
+            succeeded=self.succeeded.get(),
+            timedOut=self.timed_out.get(),
+            total=self.total.get(),
+        )
+
+
+class ItemCounter(ProgressCounter):
+    def describe(self) -> MapRunItemCounts:
+        return MapRunItemCounts(
+            aborted=self.aborted.get(),
+            failed=self.failed.get(),
+            pending=self.pending.get(),
+            resultsWritten=self.results_written.get(),
+            running=self.running.get(),
+            succeeded=self.succeeded.get(),
+            timedOut=self.timed_out.get(),
+            total=self.total.get(),
+        )
+
+
+class MapRunRecord:
+    update_event: Final[threading.Event]
+    # This is the original state machine arn plut the map run arn postfix.
+    map_state_machine_arn: str
+    execution_arn: str
+    map_run_arn: str
+    max_concurrency: int
+    execution_counter: Final[ExecutionCounter]
+    item_counter: Final[ItemCounter]
+    start_date: Timestamp
+    status: MapRunStatus
+    stop_date: Optional[Timestamp]
+    # TODO: add support for failure toleration fields.
+    tolerated_failure_count: int
+    tolerated_failure_percentage: float
+
+    def __init__(
+        self, state_machine_arn: str, execution_arn: str, max_concurrency: int
+    ):
+        self.update_event = threading.Event()
+        (
+            map_state_machine_arn,
+            map_run_arn,
+        ) = self._generate_map_run_arns(state_machine_arn=state_machine_arn)
+        self.map_run_arn = map_run_arn
+        self.map_state_machine_arn = map_state_machine_arn
+        self.execution_arn = execution_arn
+        self.max_concurrency = max_concurrency
+        self.execution_counter = ExecutionCounter()
+        self.item_counter = ItemCounter()
+        self.start_date = datetime.datetime.now(tz=datetime.timezone.utc)
+        self.status = MapRunStatus.RUNNING
+        self.stop_date = None
+        self.tolerated_failure_count = 0
+        self.tolerated_failure_percentage = 0.0
+
+    @staticmethod
+    def _generate_map_run_arns(state_machine_arn: str) -> Tuple[str, str]:
+        # Generate a new MapRunArn given the StateMachineArn, such that:
+        # inp: arn:aws:states:<region>:111111111111:stateMachine:<ArnPart_0idx>
+        # MRA: arn:aws:states:<region>:111111111111:mapRun:<ArnPart_0idx>/<MapRunArnPart0_0idx>:<MapRunArnPart1_0idx>
+        # SMA: arn:aws:states:<region>:111111111111:mapRun:<ArnPart_0idx>/<MapRunArnPart0_0idx>
+        map_run_arn = state_machine_arn.replace(":stateMachine:", ":mapRun:")
+        part_1 = str(mock_random.uuid4())
+        map_run_arn = f"{map_run_arn}/{part_1}:{str(mock_random.uuid4())}"
+        return f"{state_machine_arn}/{part_1}", map_run_arn
+
+    def set_stop(self, status: MapRunStatus):
+        self.status = status
+        self.stop_date = datetime.datetime.now(tz=datetime.timezone.utc)
+
+    def describe(self) -> Dict[str, Any]:
+        resp = dict(
+            mapRunArn=self.map_run_arn,
+            executionArn=self.execution_arn,
+            status=self.status,
+            startDate=self.start_date.isoformat(),
+            maxConcurrency=self.max_concurrency,
+            toleratedFailurePercentage=self.tolerated_failure_percentage,
+            toleratedFailureCount=self.tolerated_failure_count,
+            itemCounts=self.item_counter.describe(),
+            executionCounts=self.execution_counter.describe(),
+        )
+        stop_date = self.stop_date
+        if stop_date is not None:
+            resp["stopDate"] = self.stop_date.isoformat()
+        return resp
+
+    def to_json(self) -> Dict[str, Any]:
+        resp = dict(
+            executionArn=self.execution_arn,
+            mapRunArn=self.map_run_arn,
+            stateMachineArn=self.map_state_machine_arn,
+            startDate=self.start_date.isoformat(),
+        )
+        if self.stop_date:
+            resp["stopDate"] = self.stop_date.isoformat()
+        return resp
+
+    def update(
+        self,
+        max_concurrency: Optional[int],
+        tolerated_failure_count: Optional[int],
+        tolerated_failure_percentage: Optional[float],
+    ) -> None:
+        if max_concurrency is not None:
+            self.max_concurrency = max_concurrency
+        if tolerated_failure_count is not None:
+            self.tolerated_failure_count = tolerated_failure_count
+        if tolerated_failure_percentage is not None:
+            self.tolerated_failure_percentage = tolerated_failure_percentage
+        self.update_event.set()
+
+
+class MapRunRecordPoolManager:
+    _pool: Dict[str, MapRunRecord]
+
+    def __init__(self):
+        self._pool = OrderedDict()
+
+    def add(self, map_run_record: MapRunRecord) -> None:
+        self._pool[map_run_record.map_run_arn] = map_run_record
+
+    def get(self, map_run_arn: str) -> Optional[MapRunRecord]:
+        return self._pool.get(map_run_arn)
+
+    def get_all(self) -> List[MapRunRecord]:
+        return list(self._pool.values())
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/processor_config.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/processor_config.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/itemprocessor/processor_config.py
@@ -0,0 +1,28 @@
+from __future__ import annotations
+
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.execution_type import (
+    ExecutionType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.mode import (
+    Mode,
+)
+
+
+class ProcessorConfig(Component):
+    DEFAULT_MODE: Final[Mode] = Mode.Inline
+    DEFAULT_EXECUTION_TYPE: Final[ExecutionType] = ExecutionType.Standard
+
+    mode: Final[Mode]
+    execution_type: Final[ExecutionType]
+
+    def __init__(
+        self,
+        mode: Mode = DEFAULT_MODE,
+        execution_type: ExecutionType = DEFAULT_EXECUTION_TYPE,
+    ):
+        super().__init__()
+        self.mode = mode
+        self.execution_type = execution_type
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_component.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_component.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_component.py
@@ -0,0 +1,25 @@
+from __future__ import annotations
+
+import abc
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.states import States
+
+
+class IterationComponent(EvalComponent, abc.ABC):
+    _start_at: Final[StartAt]
+    _states: Final[States]
+    _comment: Final[Optional[Comment]]
+
+    def __init__(
+        self,
+        start_at: StartAt,
+        states: States,
+        comment: Optional[Comment],
+    ):
+        self._start_at = start_at
+        self._states = states
+        self._comment = comment
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_declaration.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_declaration.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_declaration.py
@@ -0,0 +1,22 @@
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.component.states import States
+
+
+class IterationDecl(Component):
+    comment: Final[Optional[Comment]]
+    start_at: Final[StartAt]
+    states: Final[States]
+
+    def __init__(
+        self,
+        comment: Optional[Comment],
+        start_at: StartAt,
+        states: States,
+    ):
+        self.start_at = start_at
+        self.comment = comment
+        self.states = states
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_worker.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_worker.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iteration_worker.py
@@ -0,0 +1,218 @@
+import abc
+import logging
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.api import HistoryEventType, MapIterationEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.job import (
+    Job,
+    JobPool,
+)
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import Item, Map
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.eval.program_state import (
+    ProgramError,
+    ProgramState,
+    ProgramStopped,
+)
+
+LOG = logging.getLogger(__name__)
+
+
+class IterationWorker(abc.ABC):
+    _work_name: Final[str]
+    _job_pool: Final[JobPool]
+    _env: Final[Environment]
+    _stop_signal_received: bool
+
+    def __init__(
+        self,
+        work_name: str,
+        job_pool: JobPool,
+        env: Environment,
+    ):
+        self._work_name = work_name
+        self._job_pool = job_pool
+        self._env = env
+        self._stop_signal_received = False
+
+    def sig_stop(self):
+        self._stop_signal_received = True
+
+    def stopped(self):
+        return self._stop_signal_received
+
+    @abc.abstractmethod
+    def _eval_input(self, env_frame: Environment) -> None:
+        ...
+
+    def _eval_job(self, env: Environment, job: Job) -> None:
+        map_iteration_event_details = MapIterationEventDetails(
+            name=self._work_name, index=job.job_index
+        )
+
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.MapIterationStarted,
+            event_detail=EventDetails(
+                mapIterationStartedEventDetails=map_iteration_event_details
+            ),
+        )
+
+        job_output = RuntimeError(
+            f"Unexpected Runtime Error in ItemProcessor worker for input '{job.job_index}'."
+        )
+        try:
+            env.context_object_manager.context_object["Map"] = Map(
+                Item=Item(Index=job.job_index, Value=job.job_input)
+            )
+
+            env.inp = job.job_input
+            self._eval_input(env_frame=env)
+
+            job.job_program.eval(env)
+
+            # Program evaluation suppressed runtime exceptions into an execution exception in the program state.
+            # Hence, here the routine extract this error triggering FailureEventExceptions, to allow the error at this
+            # depth to be logged appropriately and propagate to parent states.
+
+            # In case of internal error that lead to failure, then raise execution Exception
+            # and hence leading to a MapIterationFailed event.
+            end_program_state: ProgramState = env.program_state()
+            if isinstance(end_program_state, ProgramError):
+                error_name = end_program_state.error.get("error")
+                if error_name is not None:
+                    error_name = CustomErrorName(error_name=error_name)
+                raise FailureEventException(
+                    failure_event=FailureEvent(
+                        error_name=error_name,
+                        event_type=HistoryEventType.MapIterationFailed,
+                        event_details=EventDetails(
+                            executionFailedEventDetails=end_program_state.error
+                        ),
+                    )
+                )
+            # If instead the program (parent state machine) was halted, then raise an execution Exception.
+            elif isinstance(end_program_state, ProgramStopped):
+                raise FailureEventException(
+                    failure_event=FailureEvent(
+                        error_name=CustomErrorName(
+                            error_name=HistoryEventType.MapIterationAborted
+                        ),
+                        event_type=HistoryEventType.MapIterationAborted,
+                        event_details=EventDetails(
+                            executionFailedEventDetails=end_program_state.error
+                        ),
+                    )
+                )
+
+            # Otherwise, execution succeeded and the output of this operation is available.
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.MapIterationSucceeded,
+                event_detail=EventDetails(
+                    mapIterationSucceededEventDetails=map_iteration_event_details
+                ),
+                update_source_event_id=False,
+            )
+            # Extract the output otherwise.
+            job_output = env.inp
+
+        except FailureEventException as failure_event_ex:
+            # Extract the output to be this exception: this will trigger a failure workflow in the jobs pool.
+            job_output = failure_event_ex
+
+            # At this depth, the next event is either a MapIterationFailed (for any reasons) or a MapIterationAborted
+            # if explicitly indicated.
+            if (
+                failure_event_ex.failure_event.event_type
+                == HistoryEventType.MapIterationAborted
+            ):
+                env.event_history.add_event(
+                    context=env.event_history_context,
+                    hist_type_event=HistoryEventType.MapIterationAborted,
+                    event_detail=EventDetails(
+                        mapIterationAbortedEventDetails=map_iteration_event_details
+                    ),
+                    update_source_event_id=False,
+                )
+            else:
+                env.event_history.add_event(
+                    context=env.event_history_context,
+                    hist_type_event=HistoryEventType.MapIterationFailed,
+                    event_detail=EventDetails(
+                        mapIterationFailedEventDetails=map_iteration_event_details
+                    ),
+                    update_source_event_id=False,
+                )
+
+        except Exception as ex:
+            # Error case.
+            LOG.warning(
+                f"Unhandled termination error in item processor worker for job '{job.job_index}'."
+            )
+
+            # Pass the exception upstream leading to evaluation halt.
+            job_output = ex
+
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.MapIterationFailed,
+                event_detail=EventDetails(
+                    mapIterationFailedEventDetails=map_iteration_event_details
+                ),
+                update_source_event_id=False,
+            )
+
+        finally:
+            job.job_output = job_output
+
+    def _eval_pool(self, job: Optional[Job], worker_frame: Environment) -> None:
+        # Note: the frame has to be closed before the job, to ensure the owner environment is correctly updated
+        #  before the evaluation continues; map states await for job termination not workers termination.
+        if job is None:
+            self._env.close_frame(worker_frame)
+            return
+
+        # Evaluate the job.
+        job_frame = worker_frame.open_frame()
+        self._eval_job(env=job_frame, job=job)
+        worker_frame.close_frame(job_frame)
+
+        # Evaluation terminates here due to exception in job.
+        if isinstance(job.job_output, Exception):
+            self._env.close_frame(worker_frame)
+            self._job_pool.close_job(job)
+            return
+
+        # Worker was stopped.
+        if self.stopped():
+            self._env.close_frame(worker_frame)
+            self._job_pool.close_job(job)
+            return
+
+        next_job: Job = self._job_pool.next_job()
+        # Iteration will terminate after this job.
+        if next_job is None:
+            # Non-faulty terminal iteration update events are used as source of the following states.
+            worker_frame.event_history_context.source_event_id = (
+                job_frame.event_history_context.last_published_event_id
+            )
+            self._env.close_frame(worker_frame)
+            self._job_pool.close_job(job)
+            return
+
+        self._job_pool.close_job(job)
+        self._eval_pool(job=next_job, worker_frame=worker_frame)
+
+    def eval(self) -> None:
+        self._eval_pool(
+            job=self._job_pool.next_job(), worker_frame=self._env.open_frame()
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator.py
@@ -0,0 +1,61 @@
+from __future__ import annotations
+
+import json
+import logging
+from typing import Final, List, Optional
+
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.inline_iteration_component import (
+    InlineIterationComponent,
+    InlineIterationComponentEvalInput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iterator.iterator_decl import (
+    IteratorDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iterator.iterator_worker import (
+    IteratorWorker,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+LOG = logging.getLogger(__name__)
+
+
+class IteratorEvalInput(InlineIterationComponentEvalInput):
+    parameters: Final[Optional[ItemSelector]]
+
+    def __init__(
+        self,
+        state_name: str,
+        max_concurrency: int,
+        input_items: List[json],
+        parameters: Optional[Parameters],
+    ):
+        super().__init__(
+            state_name=state_name,
+            max_concurrency=max_concurrency,
+            input_items=input_items,
+        )
+        self.parameters = parameters
+
+
+class Iterator(InlineIterationComponent):
+    _eval_input: Optional[IteratorEvalInput]
+
+    def _create_worker(self, env: Environment) -> IteratorWorker:
+        return IteratorWorker(
+            work_name=self._eval_input.state_name,
+            job_pool=self._job_pool,
+            env=env,
+            parameters=self._eval_input.parameters,
+        )
+
+    @classmethod
+    def from_declaration(cls, iterator_decl: IteratorDecl):
+        return cls(
+            start_at=iterator_decl.start_at,
+            states=iterator_decl.states,
+            comment=iterator_decl.comment,
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator_decl.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator_decl.py
@@ -0,0 +1,7 @@
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_declaration import (
+    IterationDecl,
+)
+
+
+class IteratorDecl(IterationDecl):
+    pass
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator_worker.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator_worker.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/iterator/iterator_worker.py
@@ -0,0 +1,37 @@
+import copy
+import logging
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_worker import (
+    IterationWorker,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.job import (
+    JobPool,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+LOG = logging.getLogger(__name__)
+
+
+class IteratorWorker(IterationWorker):
+    _parameters: Final[Optional[Parameters]]
+
+    def __init__(
+        self,
+        work_name: str,
+        job_pool: JobPool,
+        env: Environment,
+        parameters: Optional[Parameters],
+    ):
+        super().__init__(work_name=work_name, job_pool=job_pool, env=env)
+        self._parameters = parameters
+
+    def _eval_input(self, env_frame: Environment) -> None:
+        if self._parameters:
+            map_state_input = self._env.stack[-1]
+            env_frame.inp = copy.deepcopy(map_state_input)
+            env_frame.stack.append(env_frame.inp)
+            self._parameters.eval(env_frame)
+            env_frame.inp = env_frame.stack.pop()
+            env_frame.stack.append(env_frame.inp)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/job.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/job.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/iteration/job.py
@@ -0,0 +1,100 @@
+import copy
+import logging
+import threading
+from typing import Any, Final, List, Optional, Set
+
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+LOG = logging.getLogger(__name__)
+
+
+class Job:
+    job_index: Final[int]
+    job_program: Final[Program]
+    job_input: Final[Optional[Any]]
+    job_output: Optional[Any]
+
+    def __init__(self, job_index: int, job_program: Program, job_input: Optional[Any]):
+        self.job_index = job_index
+        self.job_program = job_program
+        self.job_input = job_input
+        self.job_output = None
+
+    def __hash__(self):
+        return hash(self.job_index)
+
+
+class JobPool:
+    _mutex: Final[threading.Lock]
+    _termination_event: Final[threading.Event]
+    _worker_exception: Optional[Exception]
+
+    _jobs_number: Final[int]
+    _open_jobs: Final[List[Job]]
+    _closed_jobs: Final[Set[Job]]
+
+    def __init__(self, job_program: Program, job_inputs: List[Any]):
+        self._mutex = threading.Lock()
+        self._termination_event = threading.Event()
+        self._worker_exception = None
+
+        self._jobs_number = len(job_inputs)
+        self._open_jobs = [
+            Job(
+                job_index=job_index,
+                job_program=copy.deepcopy(job_program),
+                job_input=job_input,
+            )
+            for job_index, job_input in enumerate(job_inputs)
+        ]
+        self._open_jobs.reverse()
+        self._closed_jobs = set()
+
+    def next_job(self) -> Optional[Any]:
+        with self._mutex:
+            if self._worker_exception is not None:
+                return None
+            try:
+                return self._open_jobs.pop()
+            except IndexError:
+                return None
+
+    def _is_terminated(self) -> bool:
+        return (
+            len(self._closed_jobs) == self._jobs_number
+            or self._worker_exception is not None
+        )
+
+    def _notify_on_termination(self):
+        if self._is_terminated():
+            self._termination_event.set()
+
+    def get_worker_exception(self) -> Optional[Exception]:
+        return self._worker_exception
+
+    def close_job(self, job: Job):
+        with self._mutex:
+            if self._is_terminated():
+                return
+
+            if job in self._closed_jobs:
+                LOG.warning(
+                    f"Duplicate execution of Job with index '{job.job_index}' and input '{to_json_str(job.job_input)}'"
+                )
+
+            if isinstance(job.job_output, Exception):
+                self._worker_exception = job.job_output
+            else:
+                self._closed_jobs.add(job)
+
+            self._notify_on_termination()
+
+    def get_closed_jobs(self) -> List[Job]:
+        with self._mutex:
+            closed_jobs = copy.deepcopy(self._closed_jobs)
+        return sorted(closed_jobs, key=lambda closed_job: closed_job.job_index)
+
+    def await_jobs(self):
+        if not self._is_terminated():
+            self._termination_event.wait()
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/max_concurrency.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/max_concurrency.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/max_concurrency.py
@@ -0,0 +1,10 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class MaxConcurrency(Component):
+    DEFAULT: Final[int] = 0  # No limit.
+
+    def __init__(self, num: int = DEFAULT):
+        self.num: Final[int] = num
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/mode.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/mode.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/mode.py
@@ -0,0 +1,8 @@
+from enum import Enum
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+
+
+class Mode(Enum):
+    Inline = ASLLexer.INLINE
+    Distributed = ASLLexer.DISTRIBUTED
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/state_map.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/state_map.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_map/state_map.py
@@ -0,0 +1,204 @@
+from typing import Optional
+
+from moto.stepfunctions.parser.api import HistoryEventType, MapStateStartedEventDetails
+from moto.stepfunctions.parser.asl.component.common.catch.catch_decl import CatchDecl
+from moto.stepfunctions.parser.asl.component.common.catch.catch_outcome import (
+    CatchOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.common.path.items_path import ItemsPath
+from moto.stepfunctions.parser.asl.component.common.path.result_path import ResultPath
+from moto.stepfunctions.parser.asl.component.common.result_selector import (
+    ResultSelector,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retry_decl import RetryDecl
+from moto.stepfunctions.parser.asl.component.common.retry.retry_outcome import (
+    RetryOutcome,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.execute_state import (
+    ExecutionState,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.item_reader_decl import (
+    ItemReader,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.distributed_item_processor import (
+    DistributedItemProcessor,
+    DistributedItemProcessorEvalInput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.inline_item_processor import (
+    InlineItemProcessor,
+    InlineItemProcessorEvalInput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.item_processor_decl import (
+    ItemProcessorDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.item_processor_factory import (
+    from_item_processor_decl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iteration_component import (
+    IterationComponent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iterator.iterator import (
+    Iterator,
+    IteratorEvalInput,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iterator.iterator_decl import (
+    IteratorDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.max_concurrency import (
+    MaxConcurrency,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class StateMap(ExecutionState):
+    items_path: ItemsPath
+    iteration_component: IterationComponent
+    item_reader: Optional[ItemReader]
+    item_selector: Optional[ItemSelector]
+    parameters: Optional[Parameters]
+    max_concurrency: MaxConcurrency
+    result_path: Optional[ResultPath]
+    result_selector: ResultSelector
+    retry: Optional[RetryDecl]
+    catch: Optional[CatchDecl]
+
+    def __init__(self):
+        super(StateMap, self).__init__(
+            state_entered_event_type=HistoryEventType.MapStateEntered,
+            state_exited_event_type=HistoryEventType.MapStateExited,
+        )
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateMap, self).from_state_props(state_props)
+        self.items_path = state_props.get(ItemsPath) or ItemsPath()
+        self.item_reader = state_props.get(ItemReader)
+        self.item_selector = state_props.get(ItemSelector)
+        self.parameters = state_props.get(Parameters)
+        self.max_concurrency = state_props.get(MaxConcurrency) or MaxConcurrency()
+        self.result_path = state_props.get(ResultPath) or ResultPath(
+            result_path_src=ResultPath.DEFAULT_PATH
+        )
+        self.result_selector = state_props.get(ResultSelector)
+        self.retry = state_props.get(RetryDecl)
+        self.catch = state_props.get(CatchDecl)
+
+        # TODO: add check for itemreader used in distributed mode only.
+
+        iterator_decl = state_props.get(typ=IteratorDecl)
+        item_processor_decl = state_props.get(typ=ItemProcessorDecl)
+
+        if iterator_decl and item_processor_decl:
+            raise ValueError("Cannot define both Iterator and ItemProcessor.")
+
+        iteration_decl = iterator_decl or item_processor_decl
+        if iteration_decl is None:
+            raise ValueError(
+                f"Missing ItemProcessor/Iterator definition in props '{state_props}'."
+            )
+
+        if isinstance(iteration_decl, IteratorDecl):
+            self.iteration_component = Iterator.from_declaration(iteration_decl)
+        elif isinstance(iteration_decl, ItemProcessorDecl):
+            self.iteration_component = from_item_processor_decl(iteration_decl)
+        else:
+            raise ValueError(f"Unknown value for IteratorDecl '{iteration_decl}'.")
+
+    def _eval_execution(self, env: Environment) -> None:
+        self.items_path.eval(env)
+        if self.item_reader:
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.MapStateStarted,
+                event_detail=EventDetails(
+                    mapStateStartedEventDetails=MapStateStartedEventDetails(length=0)
+                ),
+            )
+            input_items = None
+        else:
+            input_items = env.stack.pop()
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.MapStateStarted,
+                event_detail=EventDetails(
+                    mapStateStartedEventDetails=MapStateStartedEventDetails(
+                        length=len(input_items)
+                    )
+                ),
+            )
+
+        if isinstance(self.iteration_component, Iterator):
+            eval_input = IteratorEvalInput(
+                state_name=self.name,
+                max_concurrency=self.max_concurrency.num,
+                input_items=input_items,
+                parameters=self.parameters,
+            )
+        elif isinstance(self.iteration_component, InlineItemProcessor):
+            eval_input = InlineItemProcessorEvalInput(
+                state_name=self.name,
+                max_concurrency=self.max_concurrency.num,
+                input_items=input_items,
+                item_selector=self.item_selector,
+            )
+        elif isinstance(self.iteration_component, DistributedItemProcessor):
+            eval_input = DistributedItemProcessorEvalInput(
+                state_name=self.name,
+                max_concurrency=self.max_concurrency.num,
+                item_reader=self.item_reader,
+                item_selector=self.item_selector,
+            )
+        else:
+            raise RuntimeError(
+                f"Unknown iteration component of type '{type(self.iteration_component)}' '{self.iteration_component}'."
+            )
+
+        env.stack.append(eval_input)
+        self.iteration_component.eval(env)
+
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.MapStateSucceeded,
+            update_source_event_id=False,
+        )
+
+    def _eval_state(self, env: Environment) -> None:
+        # Initialise the retry counter for execution states.
+        env.context_object_manager.context_object["State"]["RetryCount"] = 0
+
+        # Attempt to evaluate the state's logic through until it's successful, caught, or retries have run out.
+        while True:
+            try:
+                self._evaluate_with_timeout(env)
+                break
+            except Exception as ex:
+                failure_event: FailureEvent = self._from_error(env=env, ex=ex)
+
+                if self.retry:
+                    retry_outcome: RetryOutcome = self._handle_retry(
+                        env=env, failure_event=failure_event
+                    )
+                    if retry_outcome == RetryOutcome.CanRetry:
+                        continue
+
+                env.event_history.add_event(
+                    context=env.event_history_context,
+                    hist_type_event=HistoryEventType.MapStateFailed,
+                )
+
+                if self.catch:
+                    catch_outcome: CatchOutcome = self._handle_catch(
+                        env=env, failure_event=failure_event
+                    )
+                    if catch_outcome == CatchOutcome.Caught:
+                        break
+
+                self._handle_uncaught(env=env, failure_event=failure_event)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/branch_worker.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/branch_worker.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/branch_worker.py
@@ -0,0 +1,60 @@
+import abc
+import logging
+import threading
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.api import Timestamp
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.utils import TMP_THREADS
+
+LOG = logging.getLogger(__name__)
+
+
+class BranchWorker:
+    class BranchWorkerComm(abc.ABC):
+        @abc.abstractmethod
+        def on_terminated(self, env: Environment):
+            ...
+
+    _branch_worker_comm: Final[BranchWorkerComm]
+    _program: Final[Program]
+    _worker_thread: Optional[threading.Thread]
+    env: Final[Environment]
+
+    def __init__(
+        self, branch_worker_comm: BranchWorkerComm, program: Program, env: Environment
+    ):
+        self._branch_worker_comm = branch_worker_comm
+        self._program = program
+        self.env = env
+        self._worker_thread = None
+
+    def _thread_routine(self) -> None:
+        LOG.info(f"[BranchWorker] [launched] [id: {self._worker_thread.native_id}]")
+        self._program.eval(self.env)
+        LOG.info(f"[BranchWorker] [terminated] [id: {self._worker_thread.native_id}]")
+        self._branch_worker_comm.on_terminated(env=self.env)
+
+    def start(self):
+        if self._worker_thread is not None:
+            raise RuntimeError(
+                f"Attempted to rerun BranchWorker for program ${self._program}."
+            )
+
+        self._worker_thread = threading.Thread(
+            target=self._thread_routine, name=f"BranchWorker_${self._program}"
+        )
+        TMP_THREADS.append(self._worker_thread)
+        self._worker_thread.start()
+
+    def stop(
+        self, stop_date: Timestamp, cause: Optional[str], error: Optional[str]
+    ) -> None:
+        env = self.env
+        if env:
+            try:
+                env.set_stop(stop_date, cause, error)
+            except Exception:
+                # Ignore closing exceptions, this method attempts to release resources earlier.
+                pass
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/branches_decl.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/branches_decl.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/branches_decl.py
@@ -0,0 +1,114 @@
+import copy
+import datetime
+import threading
+from typing import Final, List, Optional
+
+from moto.stepfunctions.parser.api import ExecutionFailedEventDetails, HistoryEventType
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_parallel.branch_worker import (
+    BranchWorker,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.eval.program_state import ProgramError, ProgramState
+
+
+class BranchWorkerPool(BranchWorker.BranchWorkerComm):
+    _mutex: Final[threading.Lock]
+    _termination_event: Final[threading.Event]
+    _active_workers_num: int
+
+    _terminated_with_error: Optional[ExecutionFailedEventDetails]
+
+    def __init__(self, workers_num: int):
+        self._mutex = threading.Lock()
+        self._termination_event = threading.Event()
+        self._active_workers_num = workers_num
+
+        self._terminated_with_error = None
+
+    def on_terminated(self, env: Environment):
+        if self._termination_event.is_set():
+            return
+        with self._mutex:
+            end_program_state: ProgramState = env.program_state()
+            if isinstance(end_program_state, ProgramError):
+                self._terminated_with_error = end_program_state.error or dict()
+                self._termination_event.set()
+            else:
+                self._active_workers_num -= 1
+                if self._active_workers_num == 0:
+                    self._termination_event.set()
+
+    def wait(self):
+        self._termination_event.wait()
+
+    def get_exit_event_details(self) -> Optional[ExecutionFailedEventDetails]:
+        return self._terminated_with_error
+
+
+class BranchesDecl(EvalComponent):
+    def __init__(self, programs: List[Program]):
+        self.programs: Final[List[Program]] = programs
+
+    def _eval_body(self, env: Environment) -> None:
+        # Input value for every state_parallel process.
+        input_val = env.stack.pop()
+
+        branch_worker_pool = BranchWorkerPool(workers_num=len(self.programs))
+
+        branch_workers: List[BranchWorker] = list()
+        for program in self.programs:
+            # Environment frame for this sub process.
+            env_frame: Environment = env.open_frame()
+            env_frame.inp = copy.deepcopy(input_val)
+
+            # Launch the worker.
+            worker = BranchWorker(
+                branch_worker_comm=branch_worker_pool, program=program, env=env_frame
+            )
+            branch_workers.append(worker)
+
+            worker.start()
+
+        branch_worker_pool.wait()
+
+        # Propagate exception if parallel task failed.
+        exit_event_details: Optional[
+            ExecutionFailedEventDetails
+        ] = branch_worker_pool.get_exit_event_details()
+        if exit_event_details is not None:
+            for branch_worker in branch_workers:
+                branch_worker.stop(
+                    stop_date=datetime.datetime.now(), cause=None, error=None
+                )
+                env.close_frame(branch_worker.env)
+
+            exit_error_name = exit_event_details.get("error")
+            raise FailureEventException(
+                failure_event=FailureEvent(
+                    error_name=CustomErrorName(error_name=exit_error_name),
+                    event_type=HistoryEventType.ExecutionFailed,
+                    event_details=EventDetails(
+                        executionFailedEventDetails=exit_event_details
+                    ),
+                )
+            )
+
+        # Collect the results and return.
+        result_list = list()
+
+        for worker in branch_workers:
+            env_frame = worker.env
+            result_list.append(env_frame.inp)
+            env.close_frame(env_frame)
+
+        env.stack.append(result_list)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/state_parallel.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/state_parallel.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_parallel/state_parallel.py
@@ -0,0 +1,93 @@
+import copy
+
+from moto.stepfunctions.parser.api import HistoryEventType
+from moto.stepfunctions.parser.asl.component.common.catch.catch_outcome import (
+    CatchOutcome,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retry_outcome import (
+    RetryOutcome,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.execute_state import (
+    ExecutionState,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_parallel.branches_decl import (
+    BranchesDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StateParallel(ExecutionState):
+    # Branches (Required)
+    # An array of objects that specify state machines to execute in state_parallel. Each such state
+    # machine object must have fields named States and StartAt, whose meanings are exactly
+    # like those in the top level of a state machine.
+    branches: BranchesDecl
+
+    def __init__(self):
+        super().__init__(
+            state_entered_event_type=HistoryEventType.ParallelStateEntered,
+            state_exited_event_type=HistoryEventType.ParallelStateExited,
+        )
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateParallel, self).from_state_props(state_props)
+        self.branches = state_props.get(
+            typ=BranchesDecl,
+            raise_on_missing=ValueError(
+                f"Missing Branches definition in props '{state_props}'."
+            ),
+        )
+
+    def _eval_execution(self, env: Environment) -> None:
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.ParallelStateStarted,
+        )
+        self.branches.eval(env)
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.ParallelStateSucceeded,
+            update_source_event_id=False,
+        )
+
+    def _eval_state(self, env: Environment) -> None:
+        # Initialise the retry counter for execution states.
+        env.context_object_manager.context_object["State"]["RetryCount"] = 0
+
+        # Cache the input, so it can be resubmitted in case of failure.
+        input_value = copy.deepcopy(env.stack.pop())
+
+        # Attempt to evaluate the state's logic through until it's successful, caught, or retries have run out.
+        while True:
+            try:
+                env.stack.append(input_value)
+                self._evaluate_with_timeout(env)
+                break
+            except FailureEventException as failure_event_ex:
+                failure_event: FailureEvent = failure_event_ex.failure_event
+
+                if self.retry is not None:
+                    retry_outcome: RetryOutcome = self._handle_retry(
+                        env=env, failure_event=failure_event
+                    )
+                    if retry_outcome == RetryOutcome.CanRetry:
+                        continue
+
+                env.event_history.add_event(
+                    context=env.event_history_context,
+                    hist_type_event=HistoryEventType.ParallelStateFailed,
+                )
+
+                if self.catch is not None:
+                    catch_outcome: CatchOutcome = self._handle_catch(
+                        env=env, failure_event=failure_event
+                    )
+                    if catch_outcome == CatchOutcome.Caught:
+                        break
+
+                self._handle_uncaught(env=env, failure_event=failure_event)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/lambda_eval_utils.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/lambda_eval_utils.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/lambda_eval_utils.py
@@ -0,0 +1,51 @@
+import json
+from json import JSONDecodeError
+from typing import Any, Final, Optional
+
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class LambdaFunctionErrorException(Exception):
+    function_error: Final[Optional[str]]
+    payload: Final[str]
+
+    def __init__(self, function_error: Optional[str], payload: str):
+        self.function_error = function_error
+        self.payload = payload
+
+
+def exec_lambda_function(
+    env: Environment, parameters: dict, region: str, account: str
+) -> None:
+    lambda_client = boto_client_for(region=region, account=account, service="lambda")
+
+    invocation_resp = lambda_client.invoke(**parameters)
+
+    func_error: Optional[str] = invocation_resp.get("FunctionError")
+    payload_json = json.load(invocation_resp["Payload"])
+    if func_error:
+        payload_str = json.dumps(payload_json, separators=(",", ":"))
+        raise LambdaFunctionErrorException(func_error, payload_str)
+
+    invocation_resp["Payload"] = payload_json
+
+    env.stack.append(invocation_resp)
+
+
+def to_payload_type(payload: Any) -> Optional[bytes]:
+    if isinstance(payload, bytes):
+        return payload
+
+    if payload is None:
+        str_value = to_json_str(dict())
+    elif isinstance(payload, str):
+        try:
+            json.loads(payload)
+            str_value = payload
+        except JSONDecodeError:
+            str_value = to_json_str(payload)
+    else:
+        str_value = to_json_str(payload)
+    return str_value.encode("utf-8")
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/resource.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/resource.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/resource.py
@@ -0,0 +1,167 @@
+from __future__ import annotations
+
+import abc
+from itertools import takewhile
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class ResourceCondition(str):
+    WaitForTaskToken = "waitForTaskToken"
+    Sync2 = "sync:2"
+    Sync = "sync"
+
+
+class ResourceARN:
+    arn: str
+    partition: str
+    service: str
+    region: str
+    account: str
+    task_type: str
+    name: str
+    option: str
+
+    def __init__(
+        self,
+        arn: str,
+        partition: str,
+        service: str,
+        region: str,
+        account: str,
+        task_type: str,
+        name: str,
+        option: Optional[str],
+    ):
+        self.arn = arn
+        self.partition = partition
+        self.service = service
+        self.region = region
+        self.account = account
+        self.task_type = task_type
+        self.name = name
+        self.option = option
+
+    @staticmethod
+    def _consume_until(text: str, symbol: str) -> tuple[str, str]:
+        value = "".join(takewhile(lambda c: c != symbol, text))
+        tail_idx = len(value) + 1
+        return value, text[tail_idx:]
+
+    @classmethod
+    def from_arn(cls, arn: str) -> ResourceARN:
+        _, arn_tail = ResourceARN._consume_until(arn, ":")
+        partition, arn_tail = ResourceARN._consume_until(arn_tail, ":")
+        service, arn_tail = ResourceARN._consume_until(arn_tail, ":")
+        region, arn_tail = ResourceARN._consume_until(arn_tail, ":")
+        account, arn_tail = ResourceARN._consume_until(arn_tail, ":")
+        task_type, arn_tail = ResourceARN._consume_until(arn_tail, ":")
+        name, arn_tail = ResourceARN._consume_until(arn_tail, ".")
+        option = arn_tail
+        return cls(
+            arn=arn,
+            partition=partition,
+            service=service,
+            region=region,
+            account=account,
+            task_type=task_type,
+            name=name,
+            option=option,
+        )
+
+
+class ResourceRuntimePart:
+    account: Final[str]
+    region: Final[str]
+
+    def __init__(self, account: str, region: str):
+        self.region = region
+        self.account = account
+
+
+class Resource(EvalComponent, abc.ABC):
+    _region: Final[str]
+    _account: Final[str]
+    resource_arn: Final[str]
+    partition: Final[str]
+
+    def __init__(self, resource_arn: ResourceARN):
+        self._region = resource_arn.region
+        self._account = resource_arn.account
+        self.resource_arn = resource_arn.arn
+        self.partition = resource_arn.partition
+
+    @staticmethod
+    def from_resource_arn(arn: str) -> Resource:
+        resource_arn = ResourceARN.from_arn(arn)
+        if (resource_arn.service, resource_arn.task_type) == ("lambda", "function"):
+            return LambdaResource(resource_arn=resource_arn)
+        if (resource_arn.service, resource_arn.task_type) == ("states", "activity"):
+            return ActivityResource(resource_arn=resource_arn)
+        if resource_arn.service == "states":
+            return ServiceResource(resource_arn=resource_arn)
+
+    def _eval_runtime_part(self, env: Environment) -> ResourceRuntimePart:
+        region = self._region if self._region else env.aws_execution_details.region
+        account = self._account if self._account else env.aws_execution_details.account
+        return ResourceRuntimePart(
+            account=account,
+            region=region,
+        )
+
+    def _eval_body(self, env: Environment) -> None:
+        runtime_part = self._eval_runtime_part(env=env)
+        env.stack.append(runtime_part)
+
+
+class ActivityResource(Resource):
+    name: Final[str]
+
+    def __init__(self, resource_arn: ResourceARN):
+        super().__init__(resource_arn=resource_arn)
+        self.name = resource_arn.name
+
+
+class LambdaResource(Resource):
+    function_name: Final[str]
+
+    def __init__(self, resource_arn: ResourceARN):
+        super().__init__(resource_arn=resource_arn)
+        self.function_name = resource_arn.name
+
+
+class ServiceResource(Resource):
+    service_name: Final[str]
+    api_name: Final[str]
+    api_action: Final[str]
+    condition: Final[Optional[str]]
+
+    def __init__(self, resource_arn: ResourceARN):
+        super().__init__(resource_arn=resource_arn)
+        self.service_name = resource_arn.task_type
+
+        name_parts = resource_arn.name.split(":")
+        if len(name_parts) == 1:
+            self.api_name = self.service_name
+            self.api_action = resource_arn.name
+        elif len(name_parts) > 1:
+            self.api_name = name_parts[0]
+            self.api_action = name_parts[1]
+        else:
+            raise RuntimeError(
+                f"Incorrect definition of ResourceArn.name: '{resource_arn.name}'."
+            )
+
+        self.condition = None
+        option = resource_arn.option
+        if option:
+            if option == ResourceCondition.WaitForTaskToken:
+                self.condition = ResourceCondition.WaitForTaskToken
+            elif option == "sync":
+                self.condition = ResourceCondition.Sync
+            elif option == "sync:2":
+                self.condition = ResourceCondition.Sync2
+            else:
+                raise RuntimeError(f"Unsupported condition '{option}'.")
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service.py
@@ -0,0 +1,238 @@
+from __future__ import annotations
+
+import abc
+import copy
+from typing import Any, Dict, Final, List, Optional, Tuple
+
+from botocore.model import StructureShape
+
+from moto.stepfunctions.parser.api import (
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+    TaskScheduledEventDetails,
+    TaskStartedEventDetails,
+    TaskSucceededEventDetails,
+    TaskTimedOutEventDetails,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+    ServiceResource,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.state_task import (
+    StateTask,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+from moto.stepfunctions.parser.utils import camel_to_snake_case, snake_to_camel_case
+
+
+class StateTaskService(StateTask, abc.ABC):
+    resource: ServiceResource
+
+    _SERVICE_NAME_SFN_TO_BOTO_OVERRIDES: Final[Dict[str, str]] = {
+        "sfn": "stepfunctions",
+        "states": "stepfunctions",
+    }
+
+    def _get_sfn_resource(self) -> str:
+        return self.resource.api_action
+
+    def _get_sfn_resource_type(self) -> str:
+        return self.resource.service_name
+
+    def _get_timed_out_failure_event(self) -> FailureEvent:
+        return FailureEvent(
+            error_name=StatesErrorName(typ=StatesErrorNameType.StatesTimeout),
+            event_type=HistoryEventType.TaskTimedOut,
+            event_details=EventDetails(
+                taskTimedOutEventDetails=TaskTimedOutEventDetails(
+                    resourceType=self._get_sfn_resource_type(),
+                    resource=self._get_sfn_resource(),
+                    error=StatesErrorNameType.StatesTimeout.to_name(),
+                )
+            ),
+        )
+
+    def _to_boto_args(self, parameters: dict, structure_shape: StructureShape) -> None:
+        shape_members = structure_shape.members
+        norm_member_binds: Dict[str, Tuple[str, Optional[StructureShape]]] = {
+            camel_to_snake_case(member_key): (
+                member_key,
+                member_value if isinstance(member_value, StructureShape) else None,
+            )
+            for member_key, member_value in shape_members.items()
+        }
+        parameters_bind_keys: List[str] = list(parameters.keys())
+        for parameter_key in parameters_bind_keys:
+            norm_parameter_key = camel_to_snake_case(parameter_key)
+            norm_member_bind: Optional[
+                Tuple[str, Optional[StructureShape]]
+            ] = norm_member_binds.get(norm_parameter_key)
+            if norm_member_bind is not None:
+                norm_member_bind_key, norm_member_bind_shape = norm_member_bind
+                parameter_value = parameters.pop(parameter_key)
+                if norm_member_bind_shape is not None:
+                    self._to_boto_args(parameter_value, norm_member_bind_shape)
+                parameters[norm_member_bind_key] = parameter_value
+
+    @staticmethod
+    def _to_sfn_cased(member_key: str) -> str:
+        # Normalise the string to snake case, e.g. "HelloWorld_hello__world" -> "hello_world_hello_world"
+        norm_member_key = camel_to_snake_case(member_key)
+        # Normalise the snake case to camel case, e.g. "hello_world_hello_world" -> "HelloWorldHelloWorld"
+        norm_member_key = snake_to_camel_case(norm_member_key)
+        return norm_member_key
+
+    def _from_boto_response(
+        self, response: Any, structure_shape: StructureShape
+    ) -> None:
+        if not isinstance(response, dict):
+            return
+
+        shape_members = structure_shape.members
+        response_bind_keys: List[str] = list(response.keys())
+        for response_key in response_bind_keys:
+            norm_response_key = self._to_sfn_cased(response_key)
+            if response_key in shape_members:
+                shape_member = shape_members[response_key]
+
+                response_value = response.pop(response_key)
+                if isinstance(shape_member, StructureShape):
+                    self._from_boto_response(response_value, shape_member)
+                response[norm_response_key] = response_value
+
+    def _get_boto_service_name(self, boto_service_name: Optional[str] = None) -> str:
+        api_name = boto_service_name or self.resource.api_name
+        return self._SERVICE_NAME_SFN_TO_BOTO_OVERRIDES.get(api_name, api_name)
+
+    def _get_boto_service_action(
+        self, service_action_name: Optional[str] = None
+    ) -> str:
+        api_action = service_action_name or self.resource.api_action
+        return camel_to_snake_case(api_action)
+
+    def _normalise_parameters(
+        self,
+        parameters: dict,
+        boto_service_name: Optional[str] = None,
+        service_action_name: Optional[str] = None,
+    ) -> None:
+        pass
+
+    def _normalise_response(
+        self,
+        response: Any,
+        boto_service_name: Optional[str] = None,
+        service_action_name: Optional[str] = None,
+    ) -> None:
+        pass
+
+    @abc.abstractmethod
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        ...
+
+    def _before_eval_execution(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        raw_parameters: dict,
+    ) -> None:
+        parameters_str = to_json_str(raw_parameters)
+
+        scheduled_event_details = TaskScheduledEventDetails(
+            resource=self._get_sfn_resource(),
+            resourceType=self._get_sfn_resource_type(),
+            region=resource_runtime_part.region,
+            parameters=parameters_str,
+        )
+        if not self.timeout.is_default_value():
+            self.timeout.eval(env=env)
+            timeout_seconds = env.stack.pop()
+            scheduled_event_details["timeoutInSeconds"] = timeout_seconds
+        if self.heartbeat is not None:
+            self.heartbeat.eval(env=env)
+            heartbeat_seconds = env.stack.pop()
+            scheduled_event_details["heartbeatInSeconds"] = heartbeat_seconds
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.TaskScheduled,
+            event_detail=EventDetails(
+                taskScheduledEventDetails=scheduled_event_details
+            ),
+        )
+
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.TaskStarted,
+            event_detail=EventDetails(
+                taskStartedEventDetails=TaskStartedEventDetails(
+                    resource=self._get_sfn_resource(),
+                    resourceType=self._get_sfn_resource_type(),
+                )
+            ),
+        )
+
+    def _after_eval_execution(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        output = env.stack[-1]
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.TaskSucceeded,
+            event_detail=EventDetails(
+                taskSucceededEventDetails=TaskSucceededEventDetails(
+                    resource=self._get_sfn_resource(),
+                    resourceType=self._get_sfn_resource_type(),
+                    output=to_json_str(output),
+                    outputDetails=HistoryEventExecutionDataDetails(truncated=False),
+                )
+            ),
+        )
+
+    def _eval_execution(self, env: Environment) -> None:
+        self.resource.eval(env=env)
+        resource_runtime_part: ResourceRuntimePart = env.stack.pop()
+
+        raw_parameters = self._eval_parameters(env=env)
+
+        self._before_eval_execution(
+            env=env,
+            resource_runtime_part=resource_runtime_part,
+            raw_parameters=raw_parameters,
+        )
+
+        normalised_parameters = copy.deepcopy(raw_parameters)
+        self._normalise_parameters(normalised_parameters)
+
+        self._eval_service_task(
+            env=env,
+            resource_runtime_part=resource_runtime_part,
+            normalised_parameters=normalised_parameters,
+        )
+
+        output_value = env.stack[-1]
+        self._normalise_response(output_value)
+
+        self._after_eval_execution(
+            env=env,
+            resource_runtime_part=resource_runtime_part,
+            normalised_parameters=normalised_parameters,
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_api_gateway.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_api_gateway.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_api_gateway.py
@@ -0,0 +1,280 @@
+from __future__ import annotations
+
+import http
+import json
+import logging
+from json import JSONDecodeError
+from typing import Any, Dict, Final, Optional, Set, TypedDict, Union
+from urllib.parse import urlencode, urljoin
+
+import requests
+from requests import Response
+
+from moto.moto_api._internal import mock_random
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+LOG = logging.getLogger(__name__)
+
+APPLICATION_JSON = "application/json"
+HEADER_CONTENT_TYPE = "Content-Type"
+PATH_USER_REQUEST = "_user_request_"
+
+ApiEndpoint = str
+Headers = dict
+Stage = str
+Path = str
+QueryParameters = dict
+RequestBody = Union[dict, str]
+ResponseBody = Union[dict, str]
+StatusCode = int
+StatusText = str
+AllowNullValues = bool
+
+
+class Method(str):
+    GET = "GET"
+    POST = "POST"
+    PUT = "PUT"
+    DELETE = "DELETE"
+    PATCH = "PATCH"
+    HEAD = "HEAD"
+    OPTIONS = "OPTIONS"
+
+
+class AuthType(str):
+    NO_AUTH = "NO_AUTH"
+    IAM_ROLE = "IAM_ROLE"
+    RESOURCE_POLICY = "RESOURCE_POLICY"
+
+
+class TaskParameters(TypedDict):
+    ApiEndpoint: ApiEndpoint
+    Method: Method
+    Headers: Optional[Headers]
+    Stage: Optional[Stage]
+    Path: Optional[Path]
+    QueryParameters: Optional[QueryParameters]
+    RequestBody: Optional[RequestBody]
+    AllowNullValues: Optional[AllowNullValues]
+    AuthType: Optional[AuthType]
+
+
+class InvokeOutput(TypedDict):
+    Headers: Headers
+    ResponseBody: ResponseBody
+    StatusCode: StatusCode
+    StatusText: StatusText
+
+
+class SupportedApiCalls(str):
+    invoke = "invoke"
+
+
+class SfnGatewayException(Exception):
+    parameters: Final[TaskParameters]
+    response: Final[Response]
+
+    def __init__(self, parameters: TaskParameters, response: Response):
+        self.parameters = parameters
+        self.response = response
+
+
+class StateTaskServiceApiGateway(StateTaskServiceCallback):
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        SupportedApiCalls.invoke: {"ApiEndpoint", "Method"}
+    }
+
+    _FORBIDDEN_HTTP_HEADERS_PREFIX: Final[Set[str]] = {"X-Forwarded", "X-Amz", "X-Amzn"}
+    _FORBIDDEN_HTTP_HEADERS: Final[Set[str]] = {
+        "Authorization",
+        "Connection",
+        "Content-md5",
+        "Expect",
+        "Host",
+        "Max-Forwards",
+        "Proxy-Authenticate",
+        "Server",
+        "TE",
+        "Transfer-Encoding",
+        "Trailer",
+        "Upgrade",
+        "Via",
+        "Www-Authenticate",
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    def _normalise_parameters(
+        self,
+        parameters: Dict[str, Any],
+        boto_service_name: Optional[str] = None,
+        service_action_name: Optional[str] = None,
+    ) -> None:
+        # ApiGateway does not support botocore request relay.
+        pass
+
+    def _normalise_response(
+        self,
+        response: Any,
+        boto_service_name: Optional[str] = None,
+        service_action_name: Optional[str] = None,
+    ) -> None:
+        # ApiGateway does not support botocore request relay.
+        pass
+
+    @staticmethod
+    def _query_parameters_of(parameters: TaskParameters) -> Optional[str]:
+        query_str = None
+        query_parameters = parameters.get("QueryParameters")
+        # TODO: add support for AllowNullValues.
+        if query_parameters is not None:
+            for key, value in list(query_parameters.items()):
+                if value:
+                    query_parameters[key] = value[-1]
+                else:
+                    query_parameters[key] = ""
+            query_str = f"?{urlencode(query_parameters)}"
+        return query_str
+
+    @staticmethod
+    def _headers_of(parameters: TaskParameters) -> Optional[dict]:
+        headers = parameters.get("Headers", dict())
+        if headers:
+            for key in headers.keys():
+                # TODO: the following check takes place at parse time.
+                if key in StateTaskServiceApiGateway._FORBIDDEN_HTTP_HEADERS:
+                    raise ValueError(
+                        f"The 'Headers' field contains unsupported values: {key}"
+                    )
+                for (
+                    forbidden_prefix
+                ) in StateTaskServiceApiGateway._FORBIDDEN_HTTP_HEADERS_PREFIX:
+                    if key.startswith(forbidden_prefix):
+                        raise ValueError(
+                            f"The 'Headers' field contains unsupported values: {key}"
+                        )
+            if "RequestBody" in parameters:
+                headers[HEADER_CONTENT_TYPE] = APPLICATION_JSON
+        headers["Accept"] = APPLICATION_JSON
+        return headers
+
+    @staticmethod
+    def _invoke_url_of(parameters: TaskParameters) -> str:
+        given_api_endpoint = parameters["ApiEndpoint"]
+        api_endpoint = given_api_endpoint
+
+        url_base = api_endpoint + "/"
+        # http://localhost:4566/restapis/<api-id>/<stage>/_user_request_/<path>(?<query-parameters>)?
+        url_tail = "/".join(
+            [
+                parameters.get("Stage", ""),
+                PATH_USER_REQUEST,
+                parameters.get("Path", ""),
+                StateTaskServiceApiGateway._query_parameters_of(parameters) or "",
+            ]
+        )
+        invoke_url = urljoin(url_base, url_tail)
+        return invoke_url
+
+    @staticmethod
+    def _invoke_output_of(response: Response) -> InvokeOutput:
+        status_code = response.status_code
+        status_text = http.HTTPStatus(status_code).phrase
+
+        headers = dict(response.headers)
+
+        try:
+            response_body = response.json()
+        except JSONDecodeError:
+            response_body = response.text
+            if response_body == json.dumps(dict()):
+                response_body = dict()
+
+        headers.pop("server", None)
+        if "date" in headers:
+            headers["Date"] = [headers.pop("date")]
+        headers[HEADER_CONTENT_TYPE] = [APPLICATION_JSON]
+        headers["Content-Length"] = [headers["Content-Length"]]
+        # TODO: add support for the following generated fields.
+        headers["Connection"] = ["keep-alive"]
+        headers["x-amz-apigw-id"] = [str(mock_random.uuid4())]
+        headers["X-Amz-Cf-Id"] = [str(mock_random.uuid4())]
+        headers["X-Amz-Cf-Pop"] = [str(mock_random.uuid4())]
+        headers["x-amzn-RequestId"] = [str(mock_random.uuid4())]
+        headers["X-Amzn-Trace-Id"] = [str(mock_random.uuid4())]
+        headers["X-Cache"] = ["Miss from cloudfront"]
+        headers["Via"] = ["UNSUPPORTED"]
+
+        return InvokeOutput(
+            Headers=headers,
+            ResponseBody=response_body,
+            StatusCode=status_code,
+            StatusText=status_text,
+        )
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, SfnGatewayException):
+            error_name = f"ApiGateway.{ex.response.status_code}"
+            cause = ex.response.text
+        else:
+            ex_name = ex.__class__.__name__
+            error_name = f"ApiGateway.{ex_name}"
+            cause = str(ex)
+        return FailureEvent(
+            error_name=CustomErrorName(error_name),
+            event_type=HistoryEventType.TaskFailed,
+            event_details=EventDetails(
+                taskFailedEventDetails=TaskFailedEventDetails(
+                    error=error_name,
+                    cause=cause,  # TODO: add support for cause decoration.
+                    resource=self._get_sfn_resource(),
+                    resourceType=self._get_sfn_resource_type(),
+                )
+            ),
+        )
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        task_parameters: TaskParameters = normalised_parameters
+
+        method = task_parameters["Method"]
+        invoke_url = self._invoke_url_of(task_parameters)
+        headers = self._headers_of(task_parameters)
+        json_data = task_parameters.get("RequestBody")
+
+        # RequestBody is only supported for PATCH, POST, and PUT
+        if json_data is not None and method not in {
+            Method.PATCH,
+            Method.POST,
+            Method.PUT,
+        }:
+            raise ValueError()  # TODO
+
+        response: Response = getattr(requests, method.lower())(
+            invoke_url, headers=headers, json=json_data
+        )
+
+        if response.status_code != 200:
+            raise SfnGatewayException(parameters=task_parameters, response=response)
+
+        invoke_output = self._invoke_output_of(response)
+        env.stack.append(invoke_output)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_aws_sdk.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_aws_sdk.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_aws_sdk.py
@@ -0,0 +1,101 @@
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+
+
+class StateTaskServiceAwsSdk(StateTaskServiceCallback):
+    _NORMALISED_SERVICE_NAMES = {"dynamodb": "DynamoDb"}
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super().from_state_props(state_props=state_props)
+
+    def _get_sfn_resource_type(self) -> str:
+        return f"{self.resource.service_name}:{self.resource.api_name}"
+
+    @staticmethod
+    def _normalise_service_name(service_name: str) -> str:
+        service_name_lower = service_name.lower()
+        if service_name_lower in StateTaskServiceAwsSdk._NORMALISED_SERVICE_NAMES:
+            return StateTaskServiceAwsSdk._NORMALISED_SERVICE_NAMES[service_name_lower]
+        return service_name_lower
+
+    @staticmethod
+    def _normalise_exception_name(norm_service_name: str, ex: Exception) -> str:
+        ex_name = ex.__class__.__name__
+        norm_ex_name = f"{norm_service_name}.{norm_service_name if ex_name == 'ClientError' else ex_name}"
+        if not norm_ex_name.endswith("Exception"):
+            norm_ex_name += "Exception"
+        return norm_ex_name
+
+    def _get_task_failure_event(self, error: str, cause: str) -> FailureEvent:
+        return FailureEvent(
+            error_name=StatesErrorName(typ=StatesErrorNameType.StatesTaskFailed),
+            event_type=HistoryEventType.TaskFailed,
+            event_details=EventDetails(
+                taskFailedEventDetails=TaskFailedEventDetails(
+                    resource=self._get_sfn_resource(),
+                    resourceType=self._get_sfn_resource_type(),
+                    error=error,
+                    cause=cause,
+                )
+            ),
+        )
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, ClientError):
+            norm_service_name: str = self._normalise_service_name(
+                self.resource.api_name
+            )
+            error: str = self._normalise_exception_name(norm_service_name, ex)
+
+            error_message: str = ex.response["Error"]["Message"]
+            cause_details = [
+                f"Service: {norm_service_name}",
+                f"Status Code: {ex.response['ResponseMetadata']['HTTPStatusCode']}",
+                f"Request ID: {ex.response['ResponseMetadata']['RequestId']}",
+            ]
+            if "HostId" in ex.response["ResponseMetadata"]:
+                cause_details.append(
+                    f'Extended Request ID: {ex.response["ResponseMetadata"]["HostId"]}'
+                )
+
+            cause: str = f"{error_message} ({', '.join(cause_details)})"
+            failure_event = self._get_task_failure_event(error=error, cause=cause)
+            return failure_event
+        return super()._from_error(env=env, ex=ex)
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        service_name = self._get_boto_service_name()
+        api_action = self._get_boto_service_action()
+        api_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service=service_name,
+        )
+        response = getattr(api_client, api_action)(**normalised_parameters) or dict()
+
+        env.stack.append(response)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_callback.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_callback.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_callback.py
@@ -0,0 +1,188 @@
+import abc
+import json
+
+from moto.stepfunctions.parser.api import (
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+    TaskFailedEventDetails,
+    TaskSubmittedEventDetails,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceCondition,
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service import (
+    StateTaskService,
+)
+from moto.stepfunctions.parser.asl.eval.callback.callback import (
+    CallbackOutcomeFailure,
+    CallbackOutcomeFailureError,
+    CallbackOutcomeSuccess,
+    CallbackTimeoutError,
+    HeartbeatEndpoint,
+    HeartbeatTimeoutError,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class StateTaskServiceCallback(StateTaskService, abc.ABC):
+    def _get_sfn_resource(self) -> str:
+        resource = super()._get_sfn_resource()
+        if self.resource.condition is not None:
+            resource += f".{self.resource.condition}"
+        return resource
+
+    def _wait_for_task_token(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        # Discard the state evaluation output.
+        env.stack.pop()
+
+        callback_id = env.context_object_manager.context_object["Task"]["Token"]
+        callback_endpoint = env.callback_pool_manager.get(callback_id)
+
+        # With Timeouts-only definition:
+        if not self.heartbeat:
+            self.timeout.eval(env=env)
+            timeout_seconds = env.stack.pop()
+            # Although the timeout is handled already be the superclass (ExecutionState),
+            # the timeout value is specified here too, to allow this child process to terminate earlier even if
+            # discarded by the main process.
+            # Note: although this is the same timeout value, this can only decay strictly after the first timeout
+            #       started as it is invoked strictly later.
+            outcome = callback_endpoint.wait(timeout=timeout_seconds)
+        else:
+            self.heartbeat.eval(env=env)
+            heartbeat_seconds = env.stack.pop()
+            heartbeat_endpoint: HeartbeatEndpoint = (
+                callback_endpoint.setup_heartbeat_endpoint(
+                    heartbeat_seconds=heartbeat_seconds
+                )
+            )
+
+            outcome = None
+            while (
+                env.is_running() and outcome is None
+            ):  # Until subprocess hasn't timed out or result wasn't received.
+                received = heartbeat_endpoint.clear_and_wait()
+                if not received and env.is_running():  # Heartbeat timed out.
+                    raise HeartbeatTimeoutError()
+                outcome = callback_endpoint.get_outcome()
+
+        if outcome is None:
+            raise CallbackTimeoutError()
+        if isinstance(outcome, CallbackOutcomeSuccess):
+            outcome_output = json.loads(outcome.output)
+            env.stack.append(outcome_output)
+        elif isinstance(outcome, CallbackOutcomeFailure):
+            raise CallbackOutcomeFailureError(callback_outcome_failure=outcome)
+        else:
+            raise NotImplementedError(
+                f"Unsupported CallbackOutcome type '{type(outcome)}'."
+            )
+
+    def _sync(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        raise RuntimeError(
+            f"Unsupported .sync callback procedure in resource {self.resource.resource_arn}"
+        )
+
+    def _sync2(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        raise RuntimeError(
+            f"Unsupported .sync:2 callback procedure in resource {self.resource.resource_arn}"
+        )
+
+    def _is_condition(self):
+        return self.resource.condition is not None
+
+    def _get_callback_outcome_failure_event(
+        self, ex: CallbackOutcomeFailureError
+    ) -> FailureEvent:
+        callback_outcome_failure: CallbackOutcomeFailure = ex.callback_outcome_failure
+        error: str = callback_outcome_failure.error
+        return FailureEvent(
+            error_name=CustomErrorName(error_name=callback_outcome_failure.error),
+            event_type=HistoryEventType.TaskFailed,
+            event_details=EventDetails(
+                taskFailedEventDetails=TaskFailedEventDetails(
+                    resourceType=self._get_sfn_resource_type(),
+                    resource=self._get_sfn_resource(),
+                    error=error,
+                    cause=callback_outcome_failure.cause,
+                )
+            ),
+        )
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, CallbackOutcomeFailureError):
+            return self._get_callback_outcome_failure_event(ex=ex)
+        return super()._from_error(env=env, ex=ex)
+
+    def _after_eval_execution(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        if self._is_condition():
+            output = env.stack[-1]
+            env.event_history.add_event(
+                context=env.event_history_context,
+                hist_type_event=HistoryEventType.TaskSubmitted,
+                event_detail=EventDetails(
+                    taskSubmittedEventDetails=TaskSubmittedEventDetails(
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                        output=to_json_str(output),
+                        outputDetails=HistoryEventExecutionDataDetails(truncated=False),
+                    )
+                ),
+            )
+            if self.resource.condition == ResourceCondition.WaitForTaskToken:
+                self._wait_for_task_token(
+                    env=env,
+                    resource_runtime_part=resource_runtime_part,
+                    normalised_parameters=normalised_parameters,
+                )
+            elif self.resource.condition == ResourceCondition.Sync:
+                self._sync(
+                    env=env,
+                    resource_runtime_part=resource_runtime_part,
+                    normalised_parameters=normalised_parameters,
+                )
+            elif self.resource.condition == ResourceCondition.Sync2:
+                self._sync2(
+                    env=env,
+                    resource_runtime_part=resource_runtime_part,
+                    normalised_parameters=normalised_parameters,
+                )
+            else:
+                raise NotImplementedError(
+                    f"Unsupported callback type '{self.resource.condition}'."
+                )
+
+        super()._after_eval_execution(
+            env=env,
+            resource_runtime_part=resource_runtime_part,
+            normalised_parameters=normalised_parameters,
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_dynamodb.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_dynamodb.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_dynamodb.py
@@ -0,0 +1,141 @@
+from typing import Dict, Final, Optional, Set, Tuple
+
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service import (
+    StateTaskService,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+
+
+class StateTaskServiceDynamoDB(StateTaskService):
+    _ERROR_NAME_AWS: Final[str] = "DynamoDB.AmazonDynamoDBException"
+
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        "getitem": {
+            "Key",
+            "TableName",
+            "AttributesToGet",
+            "ConsistentRead",
+            "ExpressionAttributeNames",
+            "ProjectionExpression",
+            "ReturnConsumedCapacity",
+        },
+        "putitem": {
+            "Item",
+            "TableName",
+            "ConditionalOperator",
+            "ConditionExpression",
+            "Expected",
+            "ExpressionAttributeNames",
+            "ExpressionAttributeValues",
+            "ReturnConsumedCapacity",
+            "ReturnItemCollectionMetrics",
+            "ReturnValues",
+        },
+        "deleteitem": {
+            "Key",
+            "TableName",
+            "ConditionalOperator",
+            "ConditionExpression",
+            "Expected",
+            "ExpressionAttributeNames",
+            "ExpressionAttributeValues",
+            "ReturnConsumedCapacity",
+            "ReturnItemCollectionMetrics",
+            "ReturnValues",
+        },
+        "updateitem": {
+            "Key",
+            "TableName",
+            "AttributeUpdates",
+            "ConditionalOperator",
+            "ConditionExpression",
+            "Expected",
+            "ExpressionAttributeNames",
+            "ExpressionAttributeValues",
+            "ReturnConsumedCapacity",
+            "ReturnItemCollectionMetrics",
+            "ReturnValues",
+            "UpdateExpression",
+        },
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    @staticmethod
+    def _error_cause_from_client_error(client_error: ClientError) -> Tuple[str, str]:
+        error_code: str = client_error.response["Error"]["Code"]
+        error_msg: str = client_error.response["Error"]["Message"]
+        response_details = "; ".join(
+            [
+                "Service: AmazonDynamoDBv2",
+                f"Status Code: {client_error.response['ResponseMetadata']['HTTPStatusCode']}",
+                f"Error Code: {error_code}",
+                f"Request ID: {client_error.response['ResponseMetadata']['RequestId']}",
+                "Proxy: null",
+            ]
+        )
+        error = f"DynamoDB.{error_code}"
+        cause = f"{error_msg} ({response_details})"
+        return error, cause
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, ClientError):
+            error, cause = self._error_cause_from_client_error(ex)
+            error_name = CustomErrorName(error)
+            return FailureEvent(
+                error_name=error_name,
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=error,
+                        cause=cause,
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                    )
+                ),
+            )
+        else:
+            return FailureEvent(
+                error_name=CustomErrorName(self._ERROR_NAME_AWS),
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=self._ERROR_NAME_AWS,
+                        cause=str(ex),  # TODO: update to report expected cause.
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                    )
+                ),
+            )
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        service_name = self._get_boto_service_name()
+        api_action = self._get_boto_service_action()
+        dynamodb_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service=service_name,
+        )
+        response = getattr(dynamodb_client, api_action)(**normalised_parameters)
+        response.pop("ResponseMetadata", None)
+        env.stack.append(response)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_events.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_events.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_events.py
@@ -0,0 +1,112 @@
+import json
+from typing import Dict, Final, Optional, Set
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class SfnFailedEntryCountException(RuntimeError):
+    cause: Final[Optional[dict]]
+
+    def __init__(self, cause: Optional[dict]):
+        super().__init__(json.dumps(cause))
+        self.cause = cause
+
+
+class StateTaskServiceEvents(StateTaskServiceCallback):
+    _FAILED_ENTRY_ERROR_NAME: Final[ErrorName] = CustomErrorName(
+        error_name="EventBridge.FailedEntry"
+    )
+
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        "putevents": {"Entries"}
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, SfnFailedEntryCountException):
+            return FailureEvent(
+                error_name=self._FAILED_ENTRY_ERROR_NAME,
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=self._FAILED_ENTRY_ERROR_NAME.error_name,
+                        cause=ex.cause,
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                    )
+                ),
+            )
+        return super()._from_error(env=env, ex=ex)
+
+    @staticmethod
+    def _normalised_request_parameters(env: Environment, parameters: dict):
+        entries = parameters.get("Entries", [])
+        for entry in entries:
+            # Optimised integration for events automatically stringifies "Entries.Detail" if this is not a string,
+            #  and only if these are json objects.
+            if "Detail" in entry:
+                detail = entry.get("Detail")
+                if isinstance(detail, dict):
+                    entry["Detail"] = to_json_str(
+                        detail
+                    )  # Pass runtime error upstream.
+
+            # The execution ARN and the state machine ARN are automatically appended to the Resources
+            #  field of each PutEventsRequestEntry.
+            resources = entry.get("Resources", [])
+            resources.append(
+                env.context_object_manager.context_object["StateMachine"]["Id"]
+            )
+            resources.append(
+                env.context_object_manager.context_object["Execution"]["Id"]
+            )
+            entry["Resources"] = resources
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        self._normalised_request_parameters(env=env, parameters=normalised_parameters)
+        service_name = self._get_boto_service_name()
+        api_action = self._get_boto_service_action()
+        events_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service=service_name,
+        )
+        response = getattr(events_client, api_action)(**normalised_parameters)
+        response.pop("ResponseMetadata", None)
+
+        # If the response from PutEvents contains a non-zero FailedEntryCount then the
+        #  Task state fails with the error EventBridge.FailedEntry.
+        if self.resource.api_action == "putevents":
+            failed_entry_count = response.get("FailedEntryCount", 0)
+            if failed_entry_count > 0:
+                # TODO: pipe events' cause in the exception object. At them moment
+                #  LS events does not update this field.
+                raise SfnFailedEntryCountException(cause={"Cause": "Unsupported"})
+
+        env.stack.append(response)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_factory.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_factory.py
@@ -0,0 +1,51 @@
+from __future__ import annotations
+
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service import (
+    StateTaskService,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_api_gateway import (
+    StateTaskServiceApiGateway,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_aws_sdk import (
+    StateTaskServiceAwsSdk,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_dynamodb import (
+    StateTaskServiceDynamoDB,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_events import (
+    StateTaskServiceEvents,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_lambda import (
+    StateTaskServiceLambda,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_sfn import (
+    StateTaskServiceSfn,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_sns import (
+    StateTaskServiceSns,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_sqs import (
+    StateTaskServiceSqs,
+)
+
+
+# TODO: improve on factory constructor (don't use SubtypeManager: cannot reuse state task instances).
+def state_task_service_for(service_name: str) -> StateTaskService:
+    if service_name == "aws-sdk":
+        return StateTaskServiceAwsSdk()
+    if service_name == "lambda":
+        return StateTaskServiceLambda()
+    if service_name == "sqs":
+        return StateTaskServiceSqs()
+    if service_name == "states":
+        return StateTaskServiceSfn()
+    if service_name == "dynamodb":
+        return StateTaskServiceDynamoDB()
+    if service_name == "apigateway":
+        return StateTaskServiceApiGateway()
+    if service_name == "sns":
+        return StateTaskServiceSns()
+    if service_name == "events":
+        return StateTaskServiceEvents()
+    else:
+        raise NotImplementedError(f"Unsupported service: '{service_name}'.")  # noqa
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_lambda.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_lambda.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_lambda.py
@@ -0,0 +1,96 @@
+from typing import Dict, Final, Optional, Set, Tuple
+
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task import (
+    lambda_eval_utils,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class StateTaskServiceLambda(StateTaskServiceCallback):
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        "invoke": {
+            "ClientContext",
+            "FunctionName",
+            "InvocationType",
+            "Qualifier",
+            "Payload",
+            # Outside the specification, but supported in practice:
+            "LogType",
+        }
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    @staticmethod
+    def _error_cause_from_client_error(client_error: ClientError) -> Tuple[str, str]:
+        error_code: str = client_error.response["Error"]["Code"]
+        error_msg: str = client_error.response["Error"]["Message"]
+        response_details = "; ".join(
+            [
+                "Service: AWSLambda",
+                f"Status Code: {client_error.response['ResponseMetadata']['HTTPStatusCode']}",
+                f"Error Code: {error_code}",
+                f"Request ID: {client_error.response['ResponseMetadata']['RequestId']}",
+                "Proxy: null",
+            ]
+        )
+        error = f"Lambda.{error_code}"
+        cause = f"{error_msg} ({response_details})"
+        return error, cause
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, lambda_eval_utils.LambdaFunctionErrorException):
+            error = "Exception"
+            error_name = CustomErrorName(error)
+            cause = ex.payload
+        elif isinstance(ex, ClientError):
+            error, cause = self._error_cause_from_client_error(ex)
+            error_name = CustomErrorName(error)
+        else:
+            return super()._from_error(env=env, ex=ex)
+        return FailureEvent(
+            error_name=error_name,
+            event_type=HistoryEventType.TaskFailed,
+            event_details=EventDetails(
+                taskFailedEventDetails=TaskFailedEventDetails(
+                    error=error,
+                    cause=cause,
+                    resource=self._get_sfn_resource(),
+                    resourceType=self._get_sfn_resource_type(),
+                )
+            ),
+        )
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        if "Payload" in normalised_parameters:
+            normalised_parameters["Payload"] = lambda_eval_utils.to_payload_type(
+                normalised_parameters["Payload"]
+            )
+        lambda_eval_utils.exec_lambda_function(
+            env=env,
+            parameters=normalised_parameters,
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sfn.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sfn.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sfn.py
@@ -0,0 +1,220 @@
+import json
+from typing import Dict, Final, Optional, Set
+
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import (
+    DescribeExecutionOutput,
+    ExecutionStatus,
+    HistoryEventType,
+    TaskFailedEventDetails,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class StateTaskServiceSfn(StateTaskServiceCallback):
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        "startexecution": {"Input", "Name", "StateMachineArn"}
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, ClientError):
+            error_code = ex.response["Error"]["Code"]
+            error_name: str = f"StepFunctions.{error_code}Exception"
+            error_cause_details = [
+                "Service: AWSStepFunctions",
+                f"Status Code: {ex.response['ResponseMetadata']['HTTPStatusCode']}",
+                f"Error Code: {error_code}",
+                f"Request ID: {ex.response['ResponseMetadata']['RequestId']}",
+                "Proxy: null",  # TODO: investigate this proxy value.
+            ]
+            if "HostId" in ex.response["ResponseMetadata"]:
+                error_cause_details.append(
+                    f'Extended Request ID: {ex.response["ResponseMetadata"]["HostId"]}'
+                )
+            error_cause: str = (
+                f"{ex.response['Error']['Message']} ({'; '.join(error_cause_details)})"
+            )
+            return FailureEvent(
+                error_name=CustomErrorName(error_name),
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=error_name,
+                        cause=error_cause,
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                    )
+                ),
+            )
+        return super()._from_error(env=env, ex=ex)
+
+    def _normalise_parameters(
+        self,
+        parameters: dict,
+        boto_service_name: Optional[str] = None,
+        service_action_name: Optional[str] = None,
+    ) -> None:
+        if service_action_name is None:
+            if self._get_boto_service_action() == "start_execution":
+                optional_input = parameters.get("Input")
+                if not isinstance(optional_input, str):
+                    # AWS Sfn's documentation states:
+                    # If you don't include any JSON input data, you still must include the two braces.
+                    if optional_input is None:
+                        optional_input = {}
+                    parameters["Input"] = to_json_str(
+                        optional_input, separators=(",", ":")
+                    )
+        super()._normalise_parameters(
+            parameters=parameters,
+            boto_service_name=boto_service_name,
+            service_action_name=service_action_name,
+        )
+
+    @staticmethod
+    def _sync2_api_output_of(typ: type, value: json) -> None:
+        def _replace_with_json_if_str(key: str) -> None:
+            inner_value = value.get(key)
+            if isinstance(inner_value, str):
+                value[key] = json.loads(inner_value)
+
+        if typ == DescribeExecutionOutput:
+            _replace_with_json_if_str("input")
+            _replace_with_json_if_str("output")
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        service_name = self._get_boto_service_name()
+        api_action = self._get_boto_service_action()
+        sfn_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service=service_name,
+        )
+        response = getattr(sfn_client, api_action)(**normalised_parameters)
+        response.pop("ResponseMetadata", None)
+        env.stack.append(response)
+
+    def _sync_to_start_machine(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        sync2_response: bool,
+    ) -> None:
+        sfn_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service="stepfunctions",
+        )
+        submission_output: dict = env.stack.pop()
+        execution_arn: str = submission_output["ExecutionArn"]
+
+        def _has_terminated() -> Optional[dict]:
+            describe_execution_output = sfn_client.describe_execution(
+                executionArn=execution_arn
+            )
+            execution_status: ExecutionStatus = describe_execution_output["status"]
+
+            if execution_status != ExecutionStatus.RUNNING:
+                if sync2_response:
+                    self._sync2_api_output_of(
+                        typ=DescribeExecutionOutput, value=describe_execution_output
+                    )
+                self._normalise_response(
+                    response=describe_execution_output,
+                    service_action_name="describe_execution",
+                )
+                if execution_status == ExecutionStatus.SUCCEEDED:
+                    return describe_execution_output
+                else:
+                    raise FailureEventException(
+                        FailureEvent(
+                            error_name=StatesErrorName(
+                                typ=StatesErrorNameType.StatesTaskFailed
+                            ),
+                            event_type=HistoryEventType.TaskFailed,
+                            event_details=EventDetails(
+                                taskFailedEventDetails=TaskFailedEventDetails(
+                                    resource=self._get_sfn_resource(),
+                                    resourceType=self._get_sfn_resource_type(),
+                                    error=StatesErrorNameType.StatesTaskFailed.to_name(),
+                                    cause=to_json_str(describe_execution_output),
+                                )
+                            ),
+                        )
+                    )
+            return None
+
+        termination_output: Optional[dict] = None
+        while env.is_running() and not termination_output:
+            termination_output: Optional[dict] = _has_terminated()
+
+        env.stack.append(termination_output)
+
+    def _sync(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        if self._get_boto_service_action() == "start_execution":
+            return self._sync_to_start_machine(
+                env=env,
+                resource_runtime_part=resource_runtime_part,
+                sync2_response=False,
+            )
+        else:
+            super()._sync(
+                env=env,
+                resource_runtime_part=resource_runtime_part,
+                normalised_parameters=normalised_parameters,
+            )
+
+    def _sync2(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ) -> None:
+        if self._get_boto_service_action() == "start_execution":
+            return self._sync_to_start_machine(
+                env=env,
+                resource_runtime_part=resource_runtime_part,
+                sync2_response=True,
+            )
+        else:
+            super()._sync2(
+                env=env,
+                resource_runtime_part=resource_runtime_part,
+                normalised_parameters=normalised_parameters,
+            )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sns.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sns.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sns.py
@@ -0,0 +1,97 @@
+from typing import Dict, Final, Optional, Set
+
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class StateTaskServiceSns(StateTaskServiceCallback):
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        "publish": {
+            "Message",
+            "MessageAttributes",
+            "MessageStructure",
+            "PhoneNumber",
+            "Subject",
+            "TargetArn",
+            "TopicArn",
+        }
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, ClientError):
+            error_code = ex.response["Error"]["Code"]
+
+            exception_name = error_code
+            if not exception_name.endswith("Exception"):
+                exception_name += "Exception"
+            error_name = f"SNS.{exception_name}"
+
+            error_message = ex.response["Error"]["Message"]
+            status_code = ex.response["ResponseMetadata"]["HTTPStatusCode"]
+            request_id = ex.response["ResponseMetadata"]["RequestId"]
+            error_cause = (
+                f"{error_message} "
+                f"(Service: AmazonSNS; "
+                f"Status Code: {status_code}; "
+                f"Error Code: {error_code}; "
+                f"Request ID: {request_id}; "
+                f"Proxy: null)"
+            )
+
+            return FailureEvent(
+                error_name=CustomErrorName(error_name=error_name),
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=error_name,
+                        cause=error_cause,
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                    )
+                ),
+            )
+        return super()._from_error(env=env, ex=ex)
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        service_name = self._get_boto_service_name()
+        api_action = self._get_boto_service_action()
+        sns_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service=service_name,
+        )
+
+        # Optimised integration automatically stringifies
+        if "Message" in normalised_parameters and not isinstance(
+            message := normalised_parameters["Message"], str
+        ):
+            normalised_parameters["Message"] = to_json_str(message)
+
+        response = getattr(sns_client, api_action)(**normalised_parameters)
+        response.pop("ResponseMetadata", None)
+        env.stack.append(response)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sqs.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sqs.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/service/state_task_service_sqs.py
@@ -0,0 +1,98 @@
+from typing import Any, Dict, Final, Optional, Set
+
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_callback import (
+    StateTaskServiceCallback,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.boto_client import boto_client_for
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class StateTaskServiceSqs(StateTaskServiceCallback):
+    _ERROR_NAME_CLIENT: Final[str] = "SQS.SdkClientException"
+    _ERROR_NAME_AWS: Final[str] = "SQS.AmazonSQSException"
+
+    _SUPPORTED_API_PARAM_BINDINGS: Final[Dict[str, Set[str]]] = {
+        "sendmessage": {
+            "DelaySeconds",
+            "MessageAttribute",
+            "MessageBody",
+            "MessageDeduplicationId",
+            "MessageGroupId",
+            "QueueUrl",
+        }
+    }
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:
+        return self._SUPPORTED_API_PARAM_BINDINGS.get(self.resource.api_action.lower())
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, ClientError):
+            return FailureEvent(
+                error_name=CustomErrorName(self._ERROR_NAME_CLIENT),
+                event_type=HistoryEventType.TaskFailed,
+                event_details=EventDetails(
+                    taskFailedEventDetails=TaskFailedEventDetails(
+                        error=self._ERROR_NAME_CLIENT,
+                        cause=ex.response["Error"][
+                            "Message"
+                        ],  # TODO: update to report expected cause.
+                        resource=self._get_sfn_resource(),
+                        resourceType=self._get_sfn_resource_type(),
+                    )
+                ),
+            )
+        return super()._from_error(env=env, ex=ex)
+
+    def _normalise_response(
+        self,
+        response: Any,
+        boto_service_name: Optional[str] = None,
+        service_action_name: Optional[str] = None,
+    ) -> None:
+        super()._normalise_response(
+            response=response,
+            boto_service_name=boto_service_name,
+            service_action_name=service_action_name,
+        )
+        # Normalise output value key to SFN standard for Md5OfMessageBody.
+        if response and "Md5OfMessageBody" in response:
+            md5_message_body = response.pop("Md5OfMessageBody")
+            response["MD5OfMessageBody"] = md5_message_body
+
+    def _eval_service_task(
+        self,
+        env: Environment,
+        resource_runtime_part: ResourceRuntimePart,
+        normalised_parameters: dict,
+    ):
+        # TODO: Stepfunctions automatically dumps to json MessageBody's definitions.
+        #  Are these other similar scenarios?
+        if "MessageBody" in normalised_parameters:
+            message_body = normalised_parameters["MessageBody"]
+            if message_body is not None and not isinstance(message_body, str):
+                normalised_parameters["MessageBody"] = to_json_str(message_body)
+
+        service_name = self._get_boto_service_name()
+        api_action = self._get_boto_service_action()
+        sqs_client = boto_client_for(
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+            service=service_name,
+        )
+        response = getattr(sqs_client, api_action)(**normalised_parameters)
+        response.pop("ResponseMetadata", None)
+        env.stack.append(response)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task.py
@@ -0,0 +1,88 @@
+from __future__ import annotations
+
+import abc
+from typing import List, Optional
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskTimedOutEventDetails
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.state.state_execution.execute_state import (
+    ExecutionState,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    Resource,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class StateTask(ExecutionState, abc.ABC):
+    resource: Resource
+    parameters: Optional[Parameters]
+
+    def __init__(self):
+        super(StateTask, self).__init__(
+            state_entered_event_type=HistoryEventType.TaskStateEntered,
+            state_exited_event_type=HistoryEventType.TaskStateExited,
+        )
+        # Parameters (Optional)
+        # Used to state_pass information to the API actions of connected resources. The parameters can use a mix of static
+        # JSON and JsonPath.
+        self.parameters = None
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateTask, self).from_state_props(state_props)
+        self.parameters = state_props.get(Parameters)
+        self.resource = state_props.get(Resource)
+
+    def _get_supported_parameters(self) -> Optional[Set[str]]:  # noqa
+        return None
+
+    def _eval_parameters(self, env: Environment) -> dict:
+        # Eval raw parameters.
+        parameters = dict()
+        if self.parameters:
+            self.parameters.eval(env=env)
+            parameters = env.stack.pop()
+
+        # Handle supported parameters.
+        supported_parameters = self._get_supported_parameters()
+        if supported_parameters:
+            unsupported_parameters: List[str] = [
+                parameter
+                for parameter in parameters.keys()
+                if parameter not in supported_parameters
+            ]
+            for unsupported_parameter in unsupported_parameters:
+                parameters.pop(unsupported_parameter, None)
+
+        return parameters
+
+    def _get_timed_out_failure_event(self) -> FailureEvent:
+        return FailureEvent(
+            error_name=StatesErrorName(typ=StatesErrorNameType.StatesTimeout),
+            event_type=HistoryEventType.TaskTimedOut,
+            event_details=EventDetails(
+                taskTimedOutEventDetails=TaskTimedOutEventDetails(
+                    error=StatesErrorNameType.StatesTimeout.to_name(),
+                )
+            ),
+        )
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, TimeoutError):
+            return self._get_timed_out_failure_event()
+        return super()._from_error(env=env, ex=ex)
+
+    def _eval_body(self, env: Environment) -> None:
+        super(StateTask, self)._eval_body(env=env)
+        env.context_object_manager.context_object["Task"] = None
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task_factory.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task_factory.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task_factory.py
@@ -0,0 +1,28 @@
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    LambdaResource,
+    Resource,
+    ServiceResource,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.state_task_service_factory import (
+    state_task_service_for,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.state_task import (
+    StateTask,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.state_task_lambda import (
+    StateTaskLambda,
+)
+
+
+def state_task_for(resource: Resource) -> StateTask:
+    if not resource:
+        raise ValueError("No Resource declaration in State Task.")
+    if isinstance(resource, LambdaResource):
+        state = StateTaskLambda()
+    elif isinstance(resource, ServiceResource):
+        state = state_task_service_for(service_name=resource.service_name)
+    else:
+        raise NotImplementedError(
+            f"Resource of type '{type(resource)}' are not supported: '{resource}'."
+        )
+    return state
diff --git a/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task_lambda.py b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task_lambda.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_execution/state_task/state_task_lambda.py
@@ -0,0 +1,141 @@
+from botocore.exceptions import ClientError
+
+from moto.stepfunctions.parser.api import (
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+    LambdaFunctionFailedEventDetails,
+    LambdaFunctionScheduledEventDetails,
+    LambdaFunctionSucceededEventDetails,
+    LambdaFunctionTimedOutEventDetails,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task import (
+    lambda_eval_utils,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    LambdaResource,
+    ResourceRuntimePart,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.state_task import (
+    StateTask,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class StateTaskLambda(StateTask):
+    resource: LambdaResource
+
+    def _from_error(self, env: Environment, ex: Exception) -> FailureEvent:
+        if isinstance(ex, TimeoutError):
+            return FailureEvent(
+                error_name=StatesErrorName(typ=StatesErrorNameType.StatesTimeout),
+                event_type=HistoryEventType.LambdaFunctionTimedOut,
+                event_details=EventDetails(
+                    lambdaFunctionTimedOutEventDetails=LambdaFunctionTimedOutEventDetails(
+                        error=StatesErrorNameType.StatesTimeout.to_name(),
+                    )
+                ),
+            )
+
+        error = "Exception"
+        if isinstance(ex, lambda_eval_utils.LambdaFunctionErrorException):
+            error_name = CustomErrorName(error)
+            cause = ex.payload
+        elif isinstance(ex, ClientError):
+            error_name = CustomErrorName(error)
+            cause = ex.response["Error"]["Message"]
+        else:
+            error_name = StatesErrorName(StatesErrorNameType.StatesTaskFailed)
+            cause = str(ex)
+
+        return FailureEvent(
+            error_name=error_name,
+            event_type=HistoryEventType.LambdaFunctionFailed,
+            event_details=EventDetails(
+                lambdaFunctionFailedEventDetails=LambdaFunctionFailedEventDetails(
+                    error=error,
+                    cause=cause,
+                )
+            ),
+        )
+
+    def _eval_parameters(self, env: Environment) -> dict:
+        if self.parameters:
+            self.parameters.eval(env=env)
+        payload = env.stack.pop()
+        parameters = dict(
+            FunctionName=self.resource.resource_arn,
+            InvocationType="RequestResponse",
+            Payload=payload,
+        )
+        return parameters
+
+    def _eval_execution(self, env: Environment) -> None:
+        parameters = self._eval_parameters(env=env)
+        payload = parameters["Payload"]
+
+        scheduled_event_details = LambdaFunctionScheduledEventDetails(
+            resource=self.resource.resource_arn,
+            input=to_json_str(payload),
+            inputDetails=HistoryEventExecutionDataDetails(
+                truncated=False  # Always False for api calls.
+            ),
+        )
+        if not self.timeout.is_default_value():
+            self.timeout.eval(env=env)
+            timeout_seconds = env.stack.pop()
+            scheduled_event_details["timeoutInSeconds"] = timeout_seconds
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.LambdaFunctionScheduled,
+            event_detail=EventDetails(
+                lambdaFunctionScheduledEventDetails=scheduled_event_details
+            ),
+        )
+
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.LambdaFunctionStarted,
+        )
+
+        self.resource.eval(env=env)
+        resource_runtime_part: ResourceRuntimePart = env.stack.pop()
+
+        parameters["Payload"] = lambda_eval_utils.to_payload_type(parameters["Payload"])
+        lambda_eval_utils.exec_lambda_function(
+            env=env,
+            parameters=parameters,
+            region=resource_runtime_part.region,
+            account=resource_runtime_part.account,
+        )
+
+        # In lambda invocations, only payload is passed on as output.
+        output = env.stack.pop()
+        output_payload = output["Payload"]
+        env.stack.append(output_payload)
+
+        env.event_history.add_event(
+            context=env.event_history_context,
+            hist_type_event=HistoryEventType.LambdaFunctionSucceeded,
+            event_detail=EventDetails(
+                lambdaFunctionSucceededEventDetails=LambdaFunctionSucceededEventDetails(
+                    output=to_json_str(output_payload),
+                    outputDetails=HistoryEventExecutionDataDetails(
+                        truncated=False  # Always False for api calls.
+                    ),
+                )
+            ),
+        )
diff --git a/moto/stepfunctions/parser/asl/component/state/state_fail/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_fail/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_fail/state_fail.py b/moto/stepfunctions/parser/asl/component/state/state_fail/state_fail.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_fail/state_fail.py
@@ -0,0 +1,48 @@
+from typing import Optional
+
+from moto.stepfunctions.parser.api import HistoryEventType, TaskFailedEventDetails
+from moto.stepfunctions.parser.asl.component.common.cause_decl import CauseDecl
+from moto.stepfunctions.parser.asl.component.common.error_decl import ErrorDecl
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.failure_event import (
+    FailureEvent,
+    FailureEventException,
+)
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class StateFail(CommonStateField):
+    def __init__(self):
+        super().__init__(
+            state_entered_event_type=HistoryEventType.FailStateEntered,
+            state_exited_event_type=None,
+        )
+        self.cause: Optional[CauseDecl] = None
+        self.error: Optional[ErrorDecl] = None
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateFail, self).from_state_props(state_props)
+        self.cause = state_props.get(CauseDecl)
+        self.error = state_props.get(ErrorDecl)
+
+    def _eval_state(self, env: Environment) -> None:
+        task_failed_event_details = TaskFailedEventDetails()
+        if self.error:
+            task_failed_event_details["error"] = self.error.error
+        if self.cause:
+            task_failed_event_details["cause"] = self.cause.cause
+
+        error_name = CustomErrorName(self.error.error) if self.error else None
+        failure_event = FailureEvent(
+            error_name=error_name,
+            event_type=HistoryEventType.TaskFailed,
+            event_details=EventDetails(
+                taskFailedEventDetails=task_failed_event_details
+            ),
+        )
+        raise FailureEventException(failure_event=failure_event)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_pass/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_pass/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_pass/result.py b/moto/stepfunctions/parser/asl/component/state/state_pass/result.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_pass/result.py
@@ -0,0 +1,8 @@
+import json
+
+from moto.stepfunctions.parser.asl.component.component import Component
+
+
+class Result(Component):
+    def __init__(self, result_obj: json):
+        self.result_obj: json = result_obj
diff --git a/moto/stepfunctions/parser/asl/component/state/state_pass/state_pass.py b/moto/stepfunctions/parser/asl/component/state/state_pass/state_pass.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_pass/state_pass.py
@@ -0,0 +1,78 @@
+from typing import Optional
+
+from moto.stepfunctions.parser.api import (
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+    StateEnteredEventDetails,
+    StateExitedEventDetails,
+)
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.common.path.result_path import ResultPath
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_pass.result import Result
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class StatePass(CommonStateField):
+    def __init__(self):
+        super(StatePass, self).__init__(
+            state_entered_event_type=HistoryEventType.PassStateEntered,
+            state_exited_event_type=HistoryEventType.PassStateExited,
+        )
+
+        # Result (Optional)
+        # Refers to the output of a virtual state_task that is passed on to the next state. If you include the ResultPath
+        # field in your state machine definition, Result is placed as specified by ResultPath and passed on to the
+        self.result: Optional[Result] = None
+
+        # ResultPath (Optional)
+        # Specifies where to place the output (relative to the input) of the virtual state_task specified in Result. The input
+        # is further filtered as specified by the OutputPath field (if present) before being used as the state's output.
+        self.result_path: Optional[ResultPath] = None
+
+        # Parameters (Optional)
+        # Creates a collection of key-value pairs that will be passed as input. You can specify Parameters as a static
+        # value or select from the input using a path.
+        self.parameters: Optional[Parameters] = None
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StatePass, self).from_state_props(state_props)
+        self.result = state_props.get(Result)
+        self.result_path = state_props.get(ResultPath) or ResultPath(
+            result_path_src=ResultPath.DEFAULT_PATH
+        )
+        self.parameters = state_props.get(Parameters)
+
+    def _get_state_entered_event_details(
+        self, env: Environment
+    ) -> StateEnteredEventDetails:
+        return StateEnteredEventDetails(
+            name=self.name,
+            input=to_json_str(env.inp, separators=(",", ":")),
+            inputDetails=HistoryEventExecutionDataDetails(
+                truncated=False  # Always False for api calls.
+            ),
+        )
+
+    def _get_state_exited_event_details(
+        self, env: Environment
+    ) -> StateExitedEventDetails:
+        return StateExitedEventDetails(
+            name=self.name,
+            output=to_json_str(env.inp, separators=(",", ":")),
+            outputDetails=HistoryEventExecutionDataDetails(
+                truncated=False  # Always False for api calls.
+            ),
+        )
+
+    def _eval_state(self, env: Environment) -> None:
+        if self.parameters:
+            self.parameters.eval(env=env)
+
+        if self.result:
+            env.stack.append(self.result.result_obj)
+
+        if self.result_path:
+            self.result_path.eval(env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_props.py b/moto/stepfunctions/parser/asl/component/state/state_props.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_props.py
@@ -0,0 +1,49 @@
+from typing import Any
+
+from moto.stepfunctions.parser.asl.component.common.flow.end import End
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.common.timeouts.heartbeat import Heartbeat
+from moto.stepfunctions.parser.asl.component.common.timeouts.timeout import Timeout
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.max_items_decl import (
+    MaxItemsDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    Resource,
+)
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.wait_function import (
+    WaitFunction,
+)
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+
+class StateProps(TypedProps):
+    _UNIQUE_SUBINSTANCES = {
+        Resource,
+        WaitFunction,
+        Timeout,
+        Heartbeat,
+        MaxItemsDecl,
+    }
+    name: str
+
+    def add(self, instance: Any) -> None:
+        inst_type = type(instance)
+
+        # End-Next conflicts:
+        if inst_type == End and Next in self._instance_by_type:
+            raise ValueError(
+                f"End redefines Next, from '{self.get(Next)}' to '{instance}'."
+            )
+        if inst_type == Next and End in self._instance_by_type:
+            raise ValueError(
+                f"Next redefines End, from '{self.get(End)}' to '{instance}'."
+            )
+
+        # Subclasses
+        for typ in self._UNIQUE_SUBINSTANCES:
+            if issubclass(inst_type, typ):
+                super()._add(typ, instance)
+                return
+
+        # Base and delegate to preprocessor.
+        super().add(instance)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_succeed/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_succeed/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_succeed/state_succeed.py b/moto/stepfunctions/parser/asl/component/state/state_succeed/state_succeed.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_succeed/state_succeed.py
@@ -0,0 +1,31 @@
+from moto.stepfunctions.parser.api import HistoryEventType
+from moto.stepfunctions.parser.asl.component.common.flow.end import End
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_continue_with import (
+    ContinueWithSuccess,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StateSucceed(CommonStateField):
+    def __init__(self):
+        super().__init__(
+            state_entered_event_type=HistoryEventType.SucceedStateEntered,
+            state_exited_event_type=HistoryEventType.SucceedStateExited,
+        )
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateSucceed, self).from_state_props(state_props)
+        # TODO: assert all other fields are undefined?
+
+        # No Next or End field: Succeed states are terminal states.
+        if state_props.get(Next) or state_props.get(End):
+            raise ValueError(
+                f"No Next or End field: Succeed states are terminal states: with state '{self}'."
+            )
+        self.continue_with = ContinueWithSuccess()
+
+    def _eval_state(self, env: Environment) -> None:
+        pass
diff --git a/moto/stepfunctions/parser/asl/component/state/state_type.py b/moto/stepfunctions/parser/asl/component/state/state_type.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_type.py
@@ -0,0 +1,14 @@
+from enum import Enum
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+
+
+class StateType(Enum):
+    Task = ASLLexer.TASK
+    Pass = ASLLexer.PASS
+    Choice = ASLLexer.CHOICE
+    Fail = ASLLexer.FAIL
+    Succeed = ASLLexer.SUCCEED
+    Wait = ASLLexer.WAIT
+    Map = ASLLexer.MAP
+    Parallel = ASLLexer.PARALLEL
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_wait/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/state_wait.py b/moto/stepfunctions/parser/asl/component/state/state_wait/state_wait.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_wait/state_wait.py
@@ -0,0 +1,31 @@
+from __future__ import annotations
+
+from moto.stepfunctions.parser.api import HistoryEventType
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.wait_function import (
+    WaitFunction,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class StateWait(CommonStateField):
+    wait_function: WaitFunction
+
+    def __init__(self):
+        super().__init__(
+            state_entered_event_type=HistoryEventType.WaitStateEntered,
+            state_exited_event_type=HistoryEventType.WaitStateExited,
+        )
+
+    def from_state_props(self, state_props: StateProps) -> None:
+        super(StateWait, self).from_state_props(state_props)
+        self.wait_function = state_props.get(
+            typ=WaitFunction,
+            raise_on_missing=ValueError(
+                f"Undefined WaitFunction for StateWait: '{self}'."
+            ),
+        )
+
+    def _eval_state(self, env: Environment) -> None:
+        self.wait_function.eval(env)
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/__init__.py b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/seconds.py b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/seconds.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/seconds.py
@@ -0,0 +1,18 @@
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.wait_function import (
+    WaitFunction,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class Seconds(WaitFunction):
+    # Seconds
+    # A time, in seconds, to state_wait before beginning the state specified in the Next
+    # field. You must specify time as a positive, integer value.
+
+    def __init__(self, seconds: int):
+        self.seconds: Final[int] = seconds
+
+    def _get_wait_seconds(self, env: Environment) -> int:
+        return self.seconds
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/seconds_path.py b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/seconds_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/seconds_path.py
@@ -0,0 +1,23 @@
+from typing import Final
+
+from jsonpath_ng import parse
+
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.wait_function import (
+    WaitFunction,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class SecondsPath(WaitFunction):
+    # SecondsPath
+    # A time, in seconds, to state_wait before beginning the state specified in the Next
+    # field, specified using a path from the state's input data.
+    # You must specify an integer value for this field.
+
+    def __init__(self, path: str):
+        self.path: Final[str] = path
+
+    def _get_wait_seconds(self, env: Environment) -> int:
+        input_expr = parse(self.path)
+        seconds = input_expr.find(env.inp)
+        return seconds
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/timestamp.py b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/timestamp.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/timestamp.py
@@ -0,0 +1,33 @@
+import datetime
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.wait_function import (
+    WaitFunction,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+
+class Timestamp(WaitFunction):
+    # Timestamp
+    # An absolute time to state_wait until beginning the state specified in the Next field.
+    # Timestamps must conform to the RFC3339 profile of ISO 8601, with the further
+    # restrictions that an uppercase T must separate the date and time portions, and
+    # an uppercase Z must denote that a numeric time zone offset is not present, for
+    # example, 2016-08-18T17:33:00Z.
+    # Note
+    # Currently, if you specify the state_wait time as a timestamp, Step Functions considers
+    # the time value up to seconds and truncates milliseconds.
+
+    TIMESTAMP_FORMAT: Final[str] = "%Y-%m-%dT%H:%M:%SZ"
+
+    def __init__(self, timestamp):
+        self.timestamp: Final[datetime.datetime] = timestamp
+
+    @staticmethod
+    def parse_timestamp(timestamp: str) -> datetime.datetime:
+        return datetime.datetime.strptime(timestamp, Timestamp.TIMESTAMP_FORMAT)
+
+    def _get_wait_seconds(self, env: Environment) -> int:
+        delta = self.timestamp - datetime.datetime.today()
+        delta_sec = int(delta.total_seconds())
+        return delta_sec
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/timestamp_path.py b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/timestamp_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/timestamp_path.py
@@ -0,0 +1,30 @@
+import datetime
+from typing import Final
+
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.timestamp import (
+    Timestamp,
+)
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.wait_function import (
+    WaitFunction,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.utils.json_path import JSONPathUtils
+
+
+class TimestampPath(WaitFunction):
+    # TimestampPath
+    # An absolute time to state_wait until beginning the state specified in the Next field,
+    # specified using a path from the state's input data.
+
+    def __init__(self, path: str):
+        self.path: Final[str] = path
+
+    def _get_wait_seconds(self, env: Environment) -> int:
+        inp = env.stack[-1]
+        timestamp_str = JSONPathUtils.extract_json(self.path, inp)
+        timestamp = datetime.datetime.strptime(
+            timestamp_str, Timestamp.TIMESTAMP_FORMAT
+        )
+        delta = timestamp - datetime.datetime.today()
+        delta_sec = int(delta.total_seconds())
+        return delta_sec
diff --git a/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/wait_function.py b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/wait_function.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/state/state_wait/wait_function/wait_function.py
@@ -0,0 +1,39 @@
+import abc
+import logging
+import time
+
+from moto.stepfunctions.parser.asl.component.eval_component import EvalComponent
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+
+LOG = logging.getLogger(__name__)
+
+
+class WaitFunction(EvalComponent, abc.ABC):
+    @abc.abstractmethod
+    def _get_wait_seconds(self, env: Environment) -> int:
+        ...
+
+    def _wait_interval(self, env: Environment, wait_seconds: int) -> None:
+        t0 = time.time()
+        if wait_seconds > 0:
+            env.program_state_event.wait(wait_seconds)
+        t1 = time.time()
+        round_sec_waited = int(t1 - t0)
+        wait_seconds_delta = wait_seconds - round_sec_waited
+        if wait_seconds_delta <= 0:
+            return
+        elif env.is_running():
+            # Unrelated interrupt: continue waiting.
+            LOG.warning(
+                f"Wait function '{self}' successfully reentered waiting for "
+                f"another '{wait_seconds_delta}' seconds."
+            )
+            return self._wait_interval(env=env, wait_seconds=wait_seconds_delta)
+        else:
+            LOG.info(
+                f"Wait function '{self}' successfully interrupted after '{round_sec_waited}' seconds."
+            )
+
+    def _eval_body(self, env: Environment) -> None:
+        w_sec = self._get_wait_seconds(env=env)
+        self._wait_interval(env=env, wait_seconds=w_sec)
diff --git a/moto/stepfunctions/parser/asl/component/states.py b/moto/stepfunctions/parser/asl/component/states.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/component/states.py
@@ -0,0 +1,7 @@
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+
+
+class States(Component):
+    def __init__(self):
+        self.states: dict[str, CommonStateField] = dict()
diff --git a/moto/stepfunctions/parser/asl/eval/__init__.py b/moto/stepfunctions/parser/asl/eval/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/eval/aws_execution_details.py b/moto/stepfunctions/parser/asl/eval/aws_execution_details.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/aws_execution_details.py
@@ -0,0 +1,12 @@
+from typing import Final
+
+
+class AWSExecutionDetails:
+    account: Final[str]
+    region: Final[str]
+    role_arn: Final[str]
+
+    def __init__(self, account: str, region: str, role_arn: str):
+        self.account = account
+        self.region = region
+        self.role_arn = role_arn
diff --git a/moto/stepfunctions/parser/asl/eval/callback/__init__.py b/moto/stepfunctions/parser/asl/eval/callback/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/eval/callback/callback.py b/moto/stepfunctions/parser/asl/eval/callback/callback.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/callback/callback.py
@@ -0,0 +1,173 @@
+import abc
+from collections import OrderedDict
+from threading import Event
+from typing import Dict, Final, Optional
+
+from moto.moto_api._internal import mock_random
+
+CallbackId = str
+
+
+class CallbackOutcome(abc.ABC):
+    callback_id: Final[CallbackId]
+
+    def __init__(self, callback_id: str):
+        self.callback_id = callback_id
+
+
+class CallbackOutcomeSuccess(CallbackOutcome):
+    output: Final[str]
+
+    def __init__(self, callback_id: CallbackId, output: str):
+        super().__init__(callback_id=callback_id)
+        self.output = output
+
+
+class CallbackOutcomeFailure(CallbackOutcome):
+    error: Final[str]
+    cause: Final[str]
+
+    def __init__(self, callback_id: CallbackId, error: str, cause: str):
+        super().__init__(callback_id=callback_id)
+        self.error = error
+        self.cause = cause
+
+
+class CallbackTimeoutError(TimeoutError):
+    pass
+
+
+class CallbackConsumerError(abc.ABC):
+    ...
+
+
+class CallbackConsumerTimeout(CallbackConsumerError):
+    pass
+
+
+class CallbackConsumerLeft(CallbackConsumerError):
+    pass
+
+
+class HeartbeatEndpoint:
+    _next_heartbeat_event: Final[Event]
+    _heartbeat_seconds: Final[int]
+
+    def __init__(self, heartbeat_seconds: int):
+        self._next_heartbeat_event = Event()
+        self._heartbeat_seconds = heartbeat_seconds
+
+    def clear_and_wait(self) -> bool:
+        self._next_heartbeat_event.clear()
+        return self._next_heartbeat_event.wait(timeout=self._heartbeat_seconds)
+
+    def notify(self):
+        self._next_heartbeat_event.set()
+
+
+class HeartbeatTimeoutError(TimeoutError):
+    pass
+
+
+class CallbackEndpoint:
+    callback_id: Final[CallbackId]
+    _notify_event: Final[Event]
+    _outcome: Optional[CallbackOutcome]
+    consumer_error: Optional[CallbackConsumerError]
+    _heartbeat_endpoint: Optional[HeartbeatEndpoint]
+
+    def __init__(self, callback_id: CallbackId):
+        self.callback_id = callback_id
+        self._notify_event = Event()
+        self._outcome = None
+        self.consumer_error = None
+        self._heartbeat_endpoint = None
+
+    def setup_heartbeat_endpoint(self, heartbeat_seconds: int) -> HeartbeatEndpoint:
+        self._heartbeat_endpoint = HeartbeatEndpoint(
+            heartbeat_seconds=heartbeat_seconds
+        )
+        return self._heartbeat_endpoint
+
+    def notify(self, outcome: CallbackOutcome):
+        self._outcome = outcome
+        self._notify_event.set()
+        if self._heartbeat_endpoint:
+            self._heartbeat_endpoint.notify()
+
+    def notify_heartbeat(self) -> bool:
+        if not self._heartbeat_endpoint:
+            return False
+        self._heartbeat_endpoint.notify()
+        return True
+
+    def wait(self, timeout: Optional[float] = None) -> Optional[CallbackOutcome]:
+        self._notify_event.wait(timeout=timeout)
+        return self._outcome
+
+    def get_outcome(self) -> Optional[CallbackOutcome]:
+        return self._outcome
+
+    def report(self, consumer_error: CallbackConsumerError) -> None:
+        self.consumer_error = consumer_error
+
+
+class CallbackNotifyConsumerError(RuntimeError):
+    callback_consumer_error: CallbackConsumerError
+
+    def __init__(self, callback_consumer_error: CallbackConsumerError):
+        self.callback_consumer_error = callback_consumer_error
+
+
+class CallbackOutcomeFailureError(RuntimeError):
+    callback_outcome_failure: CallbackOutcomeFailure
+
+    def __init__(self, callback_outcome_failure: CallbackOutcomeFailure):
+        self.callback_outcome_failure = callback_outcome_failure
+
+
+class CallbackPoolManager:
+    _pool: Dict[CallbackId, CallbackEndpoint]
+
+    def __init__(self):
+        self._pool = OrderedDict()
+
+    def get(self, callback_id: CallbackId) -> Optional[CallbackEndpoint]:
+        return self._pool.get(callback_id)
+
+    def add(self, callback_id: CallbackId) -> CallbackEndpoint:
+        if callback_id in self._pool:
+            raise ValueError("Duplicate callback token id value.")
+        callback_endpoint = CallbackEndpoint(callback_id=callback_id)
+        self._pool[callback_id] = callback_endpoint
+        return callback_endpoint
+
+    def generate(self) -> CallbackEndpoint:
+        return self.add(str(mock_random.uuid4()))
+
+    def notify(self, callback_id: CallbackId, outcome: CallbackOutcome) -> bool:
+        callback_endpoint = self._pool.get(callback_id, None)
+        if callback_endpoint is None:
+            return False
+
+        consumer_error: Optional[
+            CallbackConsumerError
+        ] = callback_endpoint.consumer_error
+        if consumer_error is not None:
+            raise CallbackNotifyConsumerError(callback_consumer_error=consumer_error)
+
+        callback_endpoint.notify(outcome=outcome)
+        return True
+
+    def heartbeat(self, callback_id: CallbackId) -> bool:
+        callback_endpoint = self._pool.get(callback_id, None)
+        if callback_endpoint is None:
+            return False
+
+        consumer_error: Optional[
+            CallbackConsumerError
+        ] = callback_endpoint.consumer_error
+        if consumer_error is not None:
+            raise CallbackNotifyConsumerError(callback_consumer_error=consumer_error)
+
+        return callback_endpoint.notify_heartbeat()
diff --git a/moto/stepfunctions/parser/asl/eval/contextobject/__init__.py b/moto/stepfunctions/parser/asl/eval/contextobject/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/eval/contextobject/contex_object.py b/moto/stepfunctions/parser/asl/eval/contextobject/contex_object.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/contextobject/contex_object.py
@@ -0,0 +1,62 @@
+from typing import Any, Final, Optional, TypedDict
+
+from moto.moto_api._internal import mock_random
+
+
+class Execution(TypedDict):
+    Id: str
+    Input: Optional[dict]
+    Name: str
+    RoleArn: str
+    StartTime: str  # Format: ISO 8601.
+
+
+class State(TypedDict):
+    EnteredTime: str  # Format: ISO 8601.
+    Name: str
+    RetryCount: int
+
+
+class StateMachine(TypedDict):
+    Id: str
+    Name: str
+
+
+class Task(TypedDict):
+    Token: str
+
+
+class Item(TypedDict):
+    # Contains the index number for the array item that is being currently processed.
+    Index: int
+    # Contains the array item being processed.
+    Value: Optional[Any]
+
+
+class Map(TypedDict):
+    Item: Item
+
+
+class ContextObject(TypedDict):
+    Execution: Execution
+    State: Optional[State]
+    StateMachine: StateMachine
+    Task: Optional[Task]  # Null if the Parameters field is outside a task state.
+    Map: Optional[Map]  # Only available when processing a Map state.
+
+
+class ContextObjectManager:
+    context_object: Final[ContextObject]
+
+    def __init__(self, context_object: ContextObject):
+        self.context_object = context_object
+
+    def update_task_token(self) -> str:
+        new_token = str(mock_random.uuid4())
+        self.context_object["Task"] = Task(Token=new_token)
+        return new_token
+
+
+class ContextObjectInitData(TypedDict):
+    Execution: Execution
+    StateMachine: StateMachine
diff --git a/moto/stepfunctions/parser/asl/eval/count_down_latch.py b/moto/stepfunctions/parser/asl/eval/count_down_latch.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/count_down_latch.py
@@ -0,0 +1,21 @@
+import threading
+
+
+class CountDownLatch:
+    # TODO: add timeout support.
+    def __init__(self, num: int):
+        self._num: int = num
+        self.lock = threading.Condition()
+
+    def count_down(self) -> None:
+        self.lock.acquire()
+        self._num -= 1
+        if self._num <= 0:
+            self.lock.notify_all()
+        self.lock.release()
+
+    def wait(self) -> None:
+        self.lock.acquire()
+        while self._num > 0:
+            self.lock.wait()
+        self.lock.release()
diff --git a/moto/stepfunctions/parser/asl/eval/environment.py b/moto/stepfunctions/parser/asl/eval/environment.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/environment.py
@@ -0,0 +1,200 @@
+from __future__ import annotations
+
+import copy
+import logging
+import threading
+from typing import Any, Dict, Final, List, Optional
+
+from moto.stepfunctions.parser.api import ExecutionFailedEventDetails, Timestamp
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.map_run_record import (
+    MapRunRecordPoolManager,
+)
+from moto.stepfunctions.parser.asl.eval.aws_execution_details import AWSExecutionDetails
+from moto.stepfunctions.parser.asl.eval.callback.callback import CallbackPoolManager
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import (
+    ContextObject,
+    ContextObjectInitData,
+    ContextObjectManager,
+)
+from moto.stepfunctions.parser.asl.eval.event.event_history import (
+    EventHistory,
+    EventHistoryContext,
+)
+from moto.stepfunctions.parser.asl.eval.program_state import (
+    ProgramEnded,
+    ProgramError,
+    ProgramRunning,
+    ProgramState,
+    ProgramStopped,
+    ProgramTimedOut,
+)
+
+LOG = logging.getLogger(__name__)
+
+
+class Environment:
+    _state_mutex: Final[threading.RLock()]
+    _program_state: Optional[ProgramState]
+    program_state_event: Final[threading.Event()]
+
+    event_history: EventHistory
+    event_history_context: Final[EventHistoryContext]
+    aws_execution_details: Final[AWSExecutionDetails]
+    callback_pool_manager: CallbackPoolManager
+    map_run_record_pool_manager: MapRunRecordPoolManager
+    context_object_manager: Final[ContextObjectManager]
+
+    _frames: Final[List[Environment]]
+    _is_frame: bool = False
+
+    heap: Dict[str, Any] = dict()
+    stack: List[Any] = list()
+    inp: Optional[Any] = None
+
+    def __init__(
+        self,
+        aws_execution_details: AWSExecutionDetails,
+        context_object_init: ContextObjectInitData,
+        event_history_context: EventHistoryContext,
+    ):
+        super(Environment, self).__init__()
+        self._state_mutex = threading.RLock()
+        self._program_state = None
+        self.program_state_event = threading.Event()
+
+        self.event_history = EventHistory()
+        self.event_history_context = event_history_context
+        self.aws_execution_details = aws_execution_details
+        self.callback_pool_manager = CallbackPoolManager()
+        self.map_run_record_pool_manager = MapRunRecordPoolManager()
+        self.context_object_manager = ContextObjectManager(
+            context_object=ContextObject(
+                Execution=context_object_init["Execution"],
+                StateMachine=context_object_init["StateMachine"],
+            )
+        )
+
+        self._frames = list()
+        self._is_frame = False
+
+        self.heap = dict()
+        self.stack = list()
+        self.inp = None
+
+    @classmethod
+    def as_frame_of(
+        cls, env: Environment, event_history_frame_cache: EventHistoryContext
+    ):
+        context_object_init = ContextObjectInitData(
+            Execution=env.context_object_manager.context_object["Execution"],
+            StateMachine=env.context_object_manager.context_object["StateMachine"],
+        )
+        frame = cls(
+            aws_execution_details=env.aws_execution_details,
+            context_object_init=context_object_init,
+            event_history_context=event_history_frame_cache,
+        )
+        frame._is_frame = True
+        frame.event_history = env.event_history
+        if "State" in env.context_object_manager.context_object:
+            frame.context_object_manager.context_object["State"] = copy.deepcopy(
+                env.context_object_manager.context_object["State"]
+            )
+        frame.callback_pool_manager = env.callback_pool_manager
+        frame.map_run_record_pool_manager = env.map_run_record_pool_manager
+        frame.heap = env.heap
+        frame._program_state = copy.deepcopy(env._program_state)
+        return frame
+
+    @property
+    def next_state_name(self) -> Optional[str]:
+        next_state_name: Optional[str] = None
+        if isinstance(self._program_state, ProgramRunning):
+            next_state_name = self._program_state.next_state_name
+        return next_state_name
+
+    @next_state_name.setter
+    def next_state_name(self, next_state_name: str) -> None:
+        if self._program_state is None:
+            self._program_state = ProgramRunning()
+
+        if isinstance(self._program_state, ProgramRunning):
+            self._program_state.next_state_name = next_state_name
+        else:
+            raise RuntimeError(
+                f"Could not set NextState value when in state '{type(self._program_state)}'."
+            )
+
+    def program_state(self) -> ProgramState:
+        return copy.deepcopy(self._program_state)
+
+    def is_running(self) -> bool:
+        return isinstance(self._program_state, ProgramRunning)
+
+    def set_ended(self) -> None:
+        with self._state_mutex:
+            if isinstance(self._program_state, ProgramRunning):
+                self._program_state = ProgramEnded()
+                for frame in self._frames:
+                    frame.set_ended()
+            self.program_state_event.set()
+            self.program_state_event.clear()
+
+    def set_error(self, error: ExecutionFailedEventDetails) -> None:
+        with self._state_mutex:
+            self._program_state = ProgramError(error=error)
+            for frame in self._frames:
+                frame.set_error(error=error)
+            self.program_state_event.set()
+            self.program_state_event.clear()
+
+    def set_timed_out(self) -> None:
+        with self._state_mutex:
+            self._program_state = ProgramTimedOut()
+            for frame in self._frames:
+                frame.set_timed_out()
+            self.program_state_event.set()
+            self.program_state_event.clear()
+
+    def set_stop(
+        self, stop_date: Timestamp, cause: Optional[str], error: Optional[str]
+    ) -> None:
+        with self._state_mutex:
+            if isinstance(self._program_state, ProgramRunning):
+                self._program_state = ProgramStopped(
+                    stop_date=stop_date, cause=cause, error=error
+                )
+                for frame in self._frames:
+                    frame.set_stop(stop_date=stop_date, cause=cause, error=error)
+                self.program_state_event.set()
+                self.program_state_event.clear()
+            else:
+                raise RuntimeError("Cannot stop non running ProgramState.")
+
+    def open_frame(
+        self, event_history_context: Optional[EventHistoryContext] = None
+    ) -> Environment:
+        with self._state_mutex:
+            # The default logic provisions for child frame to extend the source frame event id.
+            if event_history_context is None:
+                event_history_context = EventHistoryContext(
+                    previous_event_id=self.event_history_context.source_event_id
+                )
+
+            frame = Environment.as_frame_of(self, event_history_context)
+            self._frames.append(frame)
+            return frame
+
+    def close_frame(self, frame: Environment) -> None:
+        with self._state_mutex:
+            if frame in self._frames:
+                self._frames.remove(frame)
+                self.event_history_context.integrate(frame.event_history_context)
+
+    def delete_frame(self, frame: Environment) -> None:
+        with self._state_mutex:
+            if frame in self._frames:
+                self._frames.remove(frame)
+
+    def is_frame(self) -> bool:
+        return self._is_frame
diff --git a/moto/stepfunctions/parser/asl/eval/event/__init__.py b/moto/stepfunctions/parser/asl/eval/event/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/eval/event/event_detail.py b/moto/stepfunctions/parser/asl/eval/event/event_detail.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/event/event_detail.py
@@ -0,0 +1,76 @@
+from typing import Optional, TypedDict
+
+from moto.stepfunctions.parser.api import (
+    ActivityFailedEventDetails,
+    ActivityScheduledEventDetails,
+    ActivityScheduleFailedEventDetails,
+    ActivityStartedEventDetails,
+    ActivitySucceededEventDetails,
+    ActivityTimedOutEventDetails,
+    ExecutionAbortedEventDetails,
+    ExecutionFailedEventDetails,
+    ExecutionStartedEventDetails,
+    ExecutionSucceededEventDetails,
+    ExecutionTimedOutEventDetails,
+    LambdaFunctionFailedEventDetails,
+    LambdaFunctionScheduledEventDetails,
+    LambdaFunctionScheduleFailedEventDetails,
+    LambdaFunctionStartFailedEventDetails,
+    LambdaFunctionSucceededEventDetails,
+    LambdaFunctionTimedOutEventDetails,
+    MapIterationEventDetails,
+    MapRunFailedEventDetails,
+    MapRunStartedEventDetails,
+    MapStateStartedEventDetails,
+    StateEnteredEventDetails,
+    StateExitedEventDetails,
+    TaskFailedEventDetails,
+    TaskScheduledEventDetails,
+    TaskStartedEventDetails,
+    TaskStartFailedEventDetails,
+    TaskSubmitFailedEventDetails,
+    TaskSubmittedEventDetails,
+    TaskSucceededEventDetails,
+    TaskTimedOutEventDetails,
+)
+
+
+class EventDetails(TypedDict):
+    activityFailedEventDetails: Optional[ActivityFailedEventDetails]
+    activityScheduleFailedEventDetails: Optional[ActivityScheduleFailedEventDetails]
+    activityScheduledEventDetails: Optional[ActivityScheduledEventDetails]
+    activityStartedEventDetails: Optional[ActivityStartedEventDetails]
+    activitySucceededEventDetails: Optional[ActivitySucceededEventDetails]
+    activityTimedOutEventDetails: Optional[ActivityTimedOutEventDetails]
+    taskFailedEventDetails: Optional[TaskFailedEventDetails]
+    taskScheduledEventDetails: Optional[TaskScheduledEventDetails]
+    taskStartFailedEventDetails: Optional[TaskStartFailedEventDetails]
+    taskStartedEventDetails: Optional[TaskStartedEventDetails]
+    taskSubmitFailedEventDetails: Optional[TaskSubmitFailedEventDetails]
+    taskSubmittedEventDetails: Optional[TaskSubmittedEventDetails]
+    taskSucceededEventDetails: Optional[TaskSucceededEventDetails]
+    taskTimedOutEventDetails: Optional[TaskTimedOutEventDetails]
+    executionFailedEventDetails: Optional[ExecutionFailedEventDetails]
+    executionStartedEventDetails: Optional[ExecutionStartedEventDetails]
+    executionSucceededEventDetails: Optional[ExecutionSucceededEventDetails]
+    executionAbortedEventDetails: Optional[ExecutionAbortedEventDetails]
+    executionTimedOutEventDetails: Optional[ExecutionTimedOutEventDetails]
+    mapStateStartedEventDetails: Optional[MapStateStartedEventDetails]
+    mapIterationStartedEventDetails: Optional[MapIterationEventDetails]
+    mapIterationSucceededEventDetails: Optional[MapIterationEventDetails]
+    mapIterationFailedEventDetails: Optional[MapIterationEventDetails]
+    mapIterationAbortedEventDetails: Optional[MapIterationEventDetails]
+    lambdaFunctionFailedEventDetails: Optional[LambdaFunctionFailedEventDetails]
+    lambdaFunctionScheduleFailedEventDetails: Optional[
+        LambdaFunctionScheduleFailedEventDetails
+    ]
+    lambdaFunctionScheduledEventDetails: Optional[LambdaFunctionScheduledEventDetails]
+    lambdaFunctionStartFailedEventDetails: Optional[
+        LambdaFunctionStartFailedEventDetails
+    ]
+    lambdaFunctionSucceededEventDetails: Optional[LambdaFunctionSucceededEventDetails]
+    lambdaFunctionTimedOutEventDetails: Optional[LambdaFunctionTimedOutEventDetails]
+    stateEnteredEventDetails: Optional[StateEnteredEventDetails]
+    stateExitedEventDetails: Optional[StateExitedEventDetails]
+    mapRunStartedEventDetails: Optional[MapRunStartedEventDetails]
+    mapRunFailedEventDetails: Optional[MapRunFailedEventDetails]
diff --git a/moto/stepfunctions/parser/asl/eval/event/event_history.py b/moto/stepfunctions/parser/asl/eval/event/event_history.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/event/event_history.py
@@ -0,0 +1,88 @@
+from __future__ import annotations
+
+import copy
+import threading
+from typing import Final, Optional
+
+from moto.core.utils import iso_8601_datetime_with_milliseconds
+from moto.stepfunctions.parser.api import (
+    HistoryEvent,
+    HistoryEventList,
+    HistoryEventType,
+    Timestamp,
+)
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+
+
+class EventHistoryContext:
+    # The '0' event is the source event id of the program execution.
+    _PROGRAM_START_EVENT_ID: Final[int] = 0
+
+    source_event_id: int
+    last_published_event_id: int
+
+    def __init__(self, previous_event_id: int):
+        self.source_event_id = previous_event_id
+        self.last_published_event_id = previous_event_id
+
+    @classmethod
+    def of_program_start(cls) -> EventHistoryContext:
+        return cls(previous_event_id=cls._PROGRAM_START_EVENT_ID)
+
+    def integrate(self, other: EventHistoryContext) -> None:
+        self.source_event_id = max(self.source_event_id, other.source_event_id)
+        self.last_published_event_id = max(
+            self.last_published_event_id, other.last_published_event_id
+        )
+
+
+class EventIdGenerator:
+    _next_id: int
+
+    def __init__(self):
+        self._next_id = 1
+
+    def get(self) -> int:
+        next_id = self._next_id
+        self._next_id += 1
+        return next_id
+
+
+class EventHistory:
+    _mutex: Final[threading.Lock]
+    _history_event_list: Final[HistoryEventList]
+    _event_id_gen: EventIdGenerator
+
+    def __init__(self):
+        self._mutex = threading.Lock()
+        self._history_event_list = list()
+        self._event_id_gen = EventIdGenerator()
+
+    def add_event(
+        self,
+        context: EventHistoryContext,
+        hist_type_event: HistoryEventType,
+        event_detail: Optional[EventDetails] = None,
+        timestamp: Timestamp = None,
+        update_source_event_id: bool = True,
+    ) -> int:
+        with self._mutex:
+            event_id: int = self._event_id_gen.get()
+            history_event = HistoryEvent()
+            if event_detail:
+                history_event.update(event_detail)
+            history_event["id"] = event_id
+            history_event["previousEventId"] = context.source_event_id
+            history_event["type"] = hist_type_event
+            history_event["timestamp"] = (
+                timestamp or iso_8601_datetime_with_milliseconds()
+            )
+            self._history_event_list.append(history_event)
+            context.last_published_event_id = event_id
+            if update_source_event_id:
+                context.source_event_id = event_id
+            return event_id
+
+    def get_event_history(self) -> HistoryEventList:
+        with self._mutex:
+            return copy.deepcopy(self._history_event_list)
diff --git a/moto/stepfunctions/parser/asl/eval/program_state.py b/moto/stepfunctions/parser/asl/eval/program_state.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/eval/program_state.py
@@ -0,0 +1,60 @@
+import abc
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.api import ExecutionFailedEventDetails, Timestamp
+
+
+class ProgramState(abc.ABC):
+    ...
+
+
+class ProgramEnded(ProgramState):
+    pass
+
+
+class ProgramStopped(ProgramState):
+    def __init__(
+        self, stop_date: Timestamp, error: Optional[str], cause: Optional[str]
+    ):
+        super().__init__()
+        self.stop_date: Timestamp = stop_date
+        self.error: Optional[str] = error
+        self.cause: Optional[str] = cause
+
+
+class ProgramRunning(ProgramState):
+    def __init__(self):
+        super().__init__()
+        self._next_state_name: Optional[str] = None
+
+    @property
+    def next_state_name(self) -> str:
+        next_state_name = self._next_state_name
+        if next_state_name is None:
+            raise RuntimeError(
+                "Could not retrieve NextState from uninitialised ProgramState."
+            )
+        return next_state_name
+
+    @next_state_name.setter
+    def next_state_name(self, next_state_name) -> None:
+        if not self._validate_next_state_name(next_state_name):
+            raise ValueError(f"No such NextState '{next_state_name}'.")
+        self._next_state_name = next_state_name
+
+    @staticmethod
+    def _validate_next_state_name(next_state_name: Optional[str]) -> bool:
+        # TODO.
+        return bool(next_state_name)
+
+
+class ProgramError(ProgramState):
+    error: Final[Optional[ExecutionFailedEventDetails]]
+
+    def __init__(self, error: Optional[ExecutionFailedEventDetails]):
+        super().__init__()
+        self.error = error
+
+
+class ProgramTimedOut(ProgramState):
+    pass
diff --git a/moto/stepfunctions/parser/asl/parse/__init__.py b/moto/stepfunctions/parser/asl/parse/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/parse/asl_parser.py b/moto/stepfunctions/parser/asl/parse/asl_parser.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/parse/asl_parser.py
@@ -0,0 +1,71 @@
+import abc
+from typing import Final, List
+
+from antlr4 import CommonTokenStream, InputStream
+from antlr4.error.ErrorListener import ErrorListener
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLParser import ASLParser
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.parse.preprocessor import Preprocessor
+
+
+class SyntaxErrorListener(ErrorListener):
+    errors: Final[List[str]]
+
+    def __init__(self):
+        super().__init__()
+        self.errors = list()
+
+    def syntaxError(self, recognizer, offendingSymbol, line, column, msg, e):
+        log_parts = [f"line {line}:{column}"]
+        if offendingSymbol is not None and offendingSymbol.text:
+            log_parts.append(f"at {offendingSymbol.text}")
+        if msg:
+            log_parts.append(msg)
+        error_log = ", ".join(log_parts)
+        self.errors.append(error_log)
+
+
+class ASLParserException(Exception):
+    errors: Final[List[str]]
+
+    def __init__(self, errors: List[str]):
+        self.errors = errors
+
+    def __str__(self):
+        return repr(self)
+
+    def __repr__(self):
+        if not self.errors:
+            error_str = "No error details available"
+        elif len(self.errors) == 1:
+            error_str = self.errors[0]
+        else:
+            error_str = str(self.errors)
+        return f"ASLParserException {error_str}"
+
+
+class AmazonStateLanguageParser(abc.ABC):
+    @staticmethod
+    def parse(src: str) -> Program:
+        # Attempt to build the AST and look out for syntax errors.
+        syntax_error_listener = SyntaxErrorListener()
+
+        input_stream = InputStream(src)
+        lexer = ASLLexer(input_stream)
+        stream = CommonTokenStream(lexer)
+        parser = ASLParser(stream)
+        parser.removeErrorListeners()
+        parser.addErrorListener(syntax_error_listener)
+        tree = parser.program_decl()
+
+        errors = syntax_error_listener.errors
+        if errors:
+            raise ASLParserException(errors=errors)
+
+        # Attempt to preprocess the AST into evaluation components.
+        preprocessor = Preprocessor()
+        program = preprocessor.visit(tree)
+
+        return program
diff --git a/moto/stepfunctions/parser/asl/parse/intrinsic/__init__.py b/moto/stepfunctions/parser/asl/parse/intrinsic/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/parse/intrinsic/intrinsic_parser.py b/moto/stepfunctions/parser/asl/parse/intrinsic/intrinsic_parser.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/parse/intrinsic/intrinsic_parser.py
@@ -0,0 +1,25 @@
+import abc
+
+from antlr4 import CommonTokenStream, InputStream
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLIntrinsicLexer import (
+    ASLIntrinsicLexer,
+)
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLIntrinsicParser import (
+    ASLIntrinsicParser,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.function import Function
+from moto.stepfunctions.parser.asl.parse.intrinsic.preprocessor import Preprocessor
+
+
+class IntrinsicParser(abc.ABC):
+    @staticmethod
+    def parse(src: str) -> Function:
+        input_stream = InputStream(src)
+        lexer = ASLIntrinsicLexer(input_stream)
+        stream = CommonTokenStream(lexer)
+        parser = ASLIntrinsicParser(stream)
+        tree = parser.func_decl()
+        preprocessor = Preprocessor()
+        function: Function = preprocessor.visit(tree)
+        return function
diff --git a/moto/stepfunctions/parser/asl/parse/intrinsic/preprocessor.py b/moto/stepfunctions/parser/asl/parse/intrinsic/preprocessor.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/parse/intrinsic/preprocessor.py
@@ -0,0 +1,153 @@
+import re
+from typing import List, Optional
+
+from antlr4.tree.Tree import ParseTree, TerminalNodeImpl
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLIntrinsicLexer import (
+    ASLIntrinsicLexer,
+)
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLIntrinsicParser import (
+    ASLIntrinsicParser,
+)
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLIntrinsicParserVisitor import (
+    ASLIntrinsicParserVisitor,
+)
+from moto.stepfunctions.parser.asl.antlt4utils.antlr4utils import Antlr4Utils
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument import (
+    FunctionArgument,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_bool import (
+    FunctionArgumentBool,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_context_path import (
+    FunctionArgumentContextPath,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_float import (
+    FunctionArgumentFloat,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_function import (
+    FunctionArgumentFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_int import (
+    FunctionArgumentInt,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_json_path import (
+    FunctionArgumentJsonPath,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_list import (
+    FunctionArgumentList,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.argument.function_argument_string import (
+    FunctionArgumentString,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.function import Function
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.factory import (
+    StatesFunctionFactory,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.function.statesfunction.states_function import (
+    StatesFunction,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.state_function_name_types import (
+    StatesFunctionNameType,
+)
+from moto.stepfunctions.parser.asl.component.intrinsic.functionname.states_function_name import (
+    StatesFunctionName,
+)
+
+
+class Preprocessor(ASLIntrinsicParserVisitor):
+    @staticmethod
+    def _replace_escaped_characters(match):
+        escaped_char = match.group(1)
+        if escaped_char.isalpha():
+            replacements = {"n": "\n", "t": "\t", "r": "\r"}
+            return replacements.get(escaped_char, escaped_char)
+        else:
+            return match.group(0)
+
+    @staticmethod
+    def _text_of_str(parse_tree: ParseTree) -> str:
+        pt = Antlr4Utils.is_production(parse_tree) or Antlr4Utils.is_terminal(
+            parse_tree
+        )
+        inner_str = pt.getText()
+        inner_str = inner_str[1:-1]
+        inner_str = re.sub(
+            r"\\(.)", Preprocessor._replace_escaped_characters, inner_str
+        )
+        return inner_str
+
+    def visitFunc_arg_int(
+        self, ctx: ASLIntrinsicParser.Func_arg_intContext
+    ) -> FunctionArgumentInt:
+        integer = int(ctx.INT().getText())
+        return FunctionArgumentInt(integer=integer)
+
+    def visitFunc_arg_float(
+        self, ctx: ASLIntrinsicParser.Func_arg_floatContext
+    ) -> FunctionArgumentFloat:
+        number = float(ctx.INT().getText())
+        return FunctionArgumentFloat(number=number)
+
+    def visitFunc_arg_string(
+        self, ctx: ASLIntrinsicParser.Func_arg_stringContext
+    ) -> FunctionArgumentString:
+        text: str = self._text_of_str(ctx.STRING())
+        return FunctionArgumentString(string=text)
+
+    def visitContext_path(
+        self, ctx: ASLIntrinsicParser.Context_pathContext
+    ) -> FunctionArgumentContextPath:
+        json_path: str = ctx.json_path().getText()
+        return FunctionArgumentContextPath(json_path=json_path)
+
+    def visitFunc_arg_json_path(
+        self, ctx: ASLIntrinsicParser.Func_arg_json_pathContext
+    ) -> FunctionArgumentJsonPath:
+        json_path: str = ctx.getText()
+        return FunctionArgumentJsonPath(json_path=json_path)
+
+    def visitFunc_arg_func_decl(
+        self, ctx: ASLIntrinsicParser.Func_arg_func_declContext
+    ) -> FunctionArgumentFunction:
+        function: Function = self.visit(ctx.func_decl())
+        return FunctionArgumentFunction(function=function)
+
+    def visitFunc_arg_bool(
+        self, ctx: ASLIntrinsicParser.Func_arg_boolContext
+    ) -> FunctionArgumentBool:
+        bool_term: TerminalNodeImpl = ctx.children[0]
+        bool_term_rule: int = bool_term.getSymbol().type
+        bool_val: bool = bool_term_rule == ASLIntrinsicLexer.TRUE
+        return FunctionArgumentBool(boolean=bool_val)
+
+    def visitFunc_arg_list(
+        self, ctx: ASLIntrinsicParser.Func_arg_listContext
+    ) -> FunctionArgumentList:
+        arg_list: List[FunctionArgument] = list()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, FunctionArgument):
+                arg_list.append(cmp)
+        return FunctionArgumentList(arg_list=arg_list)
+
+    def visitState_fun_name(
+        self, ctx: ASLIntrinsicParser.State_fun_nameContext
+    ) -> StatesFunctionName:
+        tok_typ: int = ctx.children[0].symbol.type
+        name_typ = StatesFunctionNameType(tok_typ)
+        return StatesFunctionName(function_type=name_typ)
+
+    def visitStates_func_decl(
+        self, ctx: ASLIntrinsicParser.States_func_declContext
+    ) -> StatesFunction:
+        func_name: StatesFunctionName = self.visit(ctx.state_fun_name())
+        arg_list: FunctionArgumentList = self.visit(ctx.func_arg_list())
+        func: StatesFunction = StatesFunctionFactory.from_name(
+            func_name=func_name, arg_list=arg_list
+        )
+        return func
+
+    def visitFunc_decl(self, ctx: ASLIntrinsicParser.Func_declContext) -> Function:
+        return self.visit(ctx.children[0])
diff --git a/moto/stepfunctions/parser/asl/parse/preprocessor.py b/moto/stepfunctions/parser/asl/parse/preprocessor.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/parse/preprocessor.py
@@ -0,0 +1,910 @@
+import json
+from typing import List, Optional
+
+from antlr4 import ParserRuleContext
+from antlr4.tree.Tree import ParseTree, TerminalNodeImpl
+
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLLexer import ASLLexer
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLParser import ASLParser
+from moto.stepfunctions.parser.asl.antlr.runtime.ASLParserVisitor import (
+    ASLParserVisitor,
+)
+from moto.stepfunctions.parser.asl.antlt4utils.antlr4utils import Antlr4Utils
+from moto.stepfunctions.parser.asl.component.common.catch.catch_decl import CatchDecl
+from moto.stepfunctions.parser.asl.component.common.catch.catcher_decl import (
+    CatcherDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.catch.catcher_props import (
+    CatcherProps,
+)
+from moto.stepfunctions.parser.asl.component.common.cause_decl import CauseDecl
+from moto.stepfunctions.parser.asl.component.common.comment import Comment
+from moto.stepfunctions.parser.asl.component.common.error_decl import ErrorDecl
+from moto.stepfunctions.parser.asl.component.common.error_name.custom_error_name import (
+    CustomErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.error_equals_decl import (
+    ErrorEqualsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.error_name import (
+    ErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name import (
+    StatesErrorName,
+)
+from moto.stepfunctions.parser.asl.component.common.error_name.states_error_name_type import (
+    StatesErrorNameType,
+)
+from moto.stepfunctions.parser.asl.component.common.flow.end import End
+from moto.stepfunctions.parser.asl.component.common.flow.next import Next
+from moto.stepfunctions.parser.asl.component.common.flow.start_at import StartAt
+from moto.stepfunctions.parser.asl.component.common.parameters import Parameters
+from moto.stepfunctions.parser.asl.component.common.path.input_path import InputPath
+from moto.stepfunctions.parser.asl.component.common.path.items_path import ItemsPath
+from moto.stepfunctions.parser.asl.component.common.path.output_path import OutputPath
+from moto.stepfunctions.parser.asl.component.common.path.result_path import ResultPath
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payload_value import (
+    PayloadValue,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadarr.payload_arr import (
+    PayloadArr,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding import (
+    PayloadBinding,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding_intrinsic_func import (
+    PayloadBindingIntrinsicFunc,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding_path import (
+    PayloadBindingPath,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding_path_context_obj import (
+    PayloadBindingPathContextObj,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadbinding.payload_binding_value import (
+    PayloadBindingValue,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadtmpl.payload_tmpl import (
+    PayloadTmpl,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_bool import (
+    PayloadValueBool,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_float import (
+    PayloadValueFloat,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_int import (
+    PayloadValueInt,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_null import (
+    PayloadValueNull,
+)
+from moto.stepfunctions.parser.asl.component.common.payload.payloadvalue.payloadvaluelit.payload_value_str import (
+    PayloadValueStr,
+)
+from moto.stepfunctions.parser.asl.component.common.result_selector import (
+    ResultSelector,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.backoff_rate_decl import (
+    BackoffRateDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.interval_seconds_decl import (
+    IntervalSecondsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.max_attempts_decl import (
+    MaxAttemptsDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retrier_decl import (
+    RetrierDecl,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retrier_props import (
+    RetrierProps,
+)
+from moto.stepfunctions.parser.asl.component.common.retry.retry_decl import RetryDecl
+from moto.stepfunctions.parser.asl.component.common.timeouts.heartbeat import (
+    HeartbeatSeconds,
+    HeartbeatSecondsPath,
+)
+from moto.stepfunctions.parser.asl.component.common.timeouts.timeout import (
+    TimeoutSeconds,
+    TimeoutSecondsPath,
+)
+from moto.stepfunctions.parser.asl.component.common.version import Version
+from moto.stepfunctions.parser.asl.component.component import Component
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.component.state.state import CommonStateField
+from moto.stepfunctions.parser.asl.component.state.state_choice.choice_rule import (
+    ChoiceRule,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.choices_decl import (
+    ChoicesDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_composite import (
+    ComparisonComposite,
+    ComparisonCompositeAnd,
+    ComparisonCompositeNot,
+    ComparisonCompositeOr,
+    ComparisonCompositeProps,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_func import (
+    ComparisonFunc,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_operator_type import (
+    ComparisonOperatorType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.comparison_variable import (
+    ComparisonVariable,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.comparison.variable import (
+    Variable,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.default_decl import (
+    DefaultDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_choice.state_choice import (
+    StateChoice,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.execution_type import (
+    ExecutionType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.item_reader_decl import (
+    ItemReader,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.csv_header_location import (
+    CSVHeaderLocation,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.csv_headers import (
+    CSVHeaders,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.input_type import (
+    InputType,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.max_items_decl import (
+    MaxItems,
+    MaxItemsDecl,
+    MaxItemsPath,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_reader.reader_config.reader_config_decl import (
+    ReaderConfig,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.item_selector import (
+    ItemSelector,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.item_processor_decl import (
+    ItemProcessorDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.processor_config import (
+    ProcessorConfig,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.iterator.iterator_decl import (
+    IteratorDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.max_concurrency import (
+    MaxConcurrency,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.mode import (
+    Mode,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.state_map import (
+    StateMap,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_parallel.branches_decl import (
+    BranchesDecl,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_parallel.state_parallel import (
+    StateParallel,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.service.resource import (
+    Resource,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_task.state_task_factory import (
+    state_task_for,
+)
+from moto.stepfunctions.parser.asl.component.state.state_fail.state_fail import (
+    StateFail,
+)
+from moto.stepfunctions.parser.asl.component.state.state_pass.result import Result
+from moto.stepfunctions.parser.asl.component.state.state_pass.state_pass import (
+    StatePass,
+)
+from moto.stepfunctions.parser.asl.component.state.state_props import StateProps
+from moto.stepfunctions.parser.asl.component.state.state_succeed.state_succeed import (
+    StateSucceed,
+)
+from moto.stepfunctions.parser.asl.component.state.state_type import StateType
+from moto.stepfunctions.parser.asl.component.state.state_wait.state_wait import (
+    StateWait,
+)
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.seconds import (
+    Seconds,
+)
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.seconds_path import (
+    SecondsPath,
+)
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.timestamp import (
+    Timestamp,
+)
+from moto.stepfunctions.parser.asl.component.state.state_wait.wait_function.timestamp_path import (
+    TimestampPath,
+)
+from moto.stepfunctions.parser.asl.component.states import States
+from moto.stepfunctions.parser.asl.parse.typed_props import TypedProps
+
+
+class Preprocessor(ASLParserVisitor):
+    @staticmethod
+    def _inner_string_of(parse_tree: ParseTree) -> Optional[str]:
+        if Antlr4Utils.is_terminal(parse_tree, ASLLexer.NULL):
+            return None
+        pt = Antlr4Utils.is_production(parse_tree) or Antlr4Utils.is_terminal(
+            parse_tree
+        )
+        inner_str = pt.getText()
+        if inner_str.startswith('"') and inner_str.endswith('"'):
+            inner_str = inner_str[1:-1]
+        return inner_str
+
+    def visitComment_decl(self, ctx: ASLParser.Comment_declContext) -> Comment:
+        inner_str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return Comment(comment=inner_str)
+
+    def visitVersion_decl(self, ctx: ASLParser.Version_declContext) -> Version:
+        version_str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return Version(version=version_str)
+
+    def visitStartat_decl(self, ctx: ASLParser.Startat_declContext) -> StartAt:
+        inner_str = self._inner_string_of(
+            parse_tree=ctx.keyword_or_string(),
+        )
+        return StartAt(start_at_name=inner_str)
+
+    def visitStates_decl(self, ctx: ASLParser.States_declContext) -> States:
+        states = States()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, CommonStateField):
+                # TODO move check to setter or checker layer?
+                if cmp.name in states.states:
+                    raise ValueError(f"State redefinition {child.getText()}")
+                states.states[cmp.name] = cmp
+        return states
+
+    def visitType_decl(self, ctx: ASLParser.Type_declContext) -> StateType:
+        return self.visit(ctx.state_type())
+
+    def visitState_type(self, ctx: ASLParser.State_typeContext) -> StateType:
+        state_type: int = ctx.children[0].symbol.type
+        return StateType(state_type)
+
+    def visitResource_decl(self, ctx: ASLParser.Resource_declContext) -> Resource:
+        inner_str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return Resource.from_resource_arn(inner_str)
+
+    def visitEnd_decl(self, ctx: ASLParser.End_declContext) -> End:
+        bool_child: ParseTree = ctx.children[-1]
+        bool_term: Optional[TerminalNodeImpl] = Antlr4Utils.is_terminal(bool_child)
+        if bool_term is None:
+            raise ValueError(
+                f"Could not derive End from declaration context '{ctx.getText()}'"
+            )
+        bool_term_rule: int = bool_term.getSymbol().type
+        is_end = bool_term_rule == ASLLexer.TRUE
+        return End(is_end=is_end)
+
+    def visitNext_decl(self, ctx: ASLParser.Next_declContext) -> Next:
+        inner_str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return Next(name=inner_str)
+
+    def visitResult_path_decl(
+        self, ctx: ASLParser.Result_path_declContext
+    ) -> ResultPath:
+        inner_str = self._inner_string_of(parse_tree=ctx.children[-1])
+        return ResultPath(result_path_src=inner_str)
+
+    def visitInput_path_decl(self, ctx: ASLParser.Input_path_declContext) -> InputPath:
+        inner_str = self._inner_string_of(parse_tree=ctx.children[-1])
+        return InputPath(input_path_src=inner_str)
+
+    def visitOutput_path_decl(self, ctx: ASLParser.Output_path_declContext):
+        inner_str = self._inner_string_of(parse_tree=ctx.children[-1])
+        return OutputPath(output_path=inner_str)
+
+    def visitResult_decl(self, ctx: ASLParser.Result_declContext) -> Result:
+        json_decl = ctx.json_value_decl()
+        json_str: str = json_decl.getText()
+        json_obj: json = json.loads(json_str)
+        return Result(result_obj=json_obj)
+
+    def visitParameters_decl(self, ctx: ASLParser.Parameters_declContext) -> Parameters:
+        payload_tmpl: PayloadTmpl = self.visit(ctx.payload_tmpl_decl())
+        return Parameters(payload_tmpl=payload_tmpl)
+
+    def visitTimeout_seconds_decl(
+        self, ctx: ASLParser.Timeout_seconds_declContext
+    ) -> TimeoutSeconds:
+        seconds = int(ctx.INT().getText())
+        return TimeoutSeconds(timeout_seconds=seconds)
+
+    def visitTimeout_seconds_path_decl(
+        self, ctx: ASLParser.Timeout_seconds_path_declContext
+    ) -> TimeoutSecondsPath:
+        path: str = self._inner_string_of(parse_tree=ctx.STRINGPATH())
+        return TimeoutSecondsPath(path=path)
+
+    def visitHeartbeat_seconds_decl(
+        self, ctx: ASLParser.Heartbeat_seconds_declContext
+    ) -> HeartbeatSeconds:
+        seconds = int(ctx.INT().getText())
+        return HeartbeatSeconds(heartbeat_seconds=seconds)
+
+    def visitHeartbeat_seconds_path_decl(
+        self, ctx: ASLParser.Heartbeat_seconds_path_declContext
+    ) -> HeartbeatSecondsPath:
+        path: str = self._inner_string_of(parse_tree=ctx.STRINGPATH())
+        return HeartbeatSecondsPath(path=path)
+
+    def visitResult_selector_decl(
+        self, ctx: ASLParser.Result_selector_declContext
+    ) -> ResultSelector:
+        payload_tmpl: PayloadTmpl = self.visit(ctx.payload_tmpl_decl())
+        return ResultSelector(payload_tmpl=payload_tmpl)
+
+    def visitBranches_decl(self, ctx: ASLParser.Branches_declContext) -> BranchesDecl:
+        programs: List[Program] = []
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, Program):
+                programs.append(cmp)
+        return BranchesDecl(programs=programs)
+
+    def visitState_decl_body(self, ctx: ASLParser.State_decl_bodyContext) -> StateProps:
+        state_props = StateProps()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            state_props.add(cmp)
+        return state_props
+
+    def visitState_decl(self, ctx: ASLParser.State_declContext) -> CommonStateField:
+        state_name = self._inner_string_of(parse_tree=ctx.state_name())
+        state_props: StateProps = self.visit(ctx.state_decl_body())
+        state_props.name = state_name
+        return self._common_state_field_of(state_props=state_props)
+
+    @staticmethod
+    def _common_state_field_of(state_props: StateProps) -> CommonStateField:
+        # TODO: use subtype loading strategy.
+        if state_props.get(StateType) == StateType.Task:
+            resource: Resource = state_props.get(Resource)
+            state = state_task_for(resource)
+        elif state_props.get(StateType) == StateType.Pass:
+            state = StatePass()
+        elif state_props.get(StateType) == StateType.Choice:
+            state = StateChoice()
+        elif state_props.get(StateType) == StateType.Fail:
+            state = StateFail()
+        elif state_props.get(StateType) == StateType.Succeed:
+            state = StateSucceed()
+        elif state_props.get(StateType) == StateType.Wait:
+            state = StateWait()
+        elif state_props.get(StateType) == StateType.Map:
+            state = StateMap()
+        elif state_props.get(StateType) == StateType.Parallel:
+            state = StateParallel()
+        elif state_props.get(StateType) is None:
+            raise TypeError("No Type declaration for State in context.")
+        else:
+            raise TypeError(
+                f"Unknown StateType value '{state_props.get(StateType)}' in StateProps object in context."  # noqa
+            )
+        state.from_state_props(state_props)
+        return state
+
+    def visitVariable_decl(self, ctx: ASLParser.Variable_declContext) -> Variable:
+        value: str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return Variable(value=value)
+
+    def visitComparison_op(
+        self, ctx: ASLParser.Comparison_opContext
+    ) -> ComparisonOperatorType:
+        try:
+            operator_type: int = ctx.children[0].symbol.type
+            return ComparisonOperatorType(operator_type)
+        except Exception:
+            raise ValueError(
+                f"Could not derive ComparisonOperator from context '{ctx.getText()}'."
+            )
+
+    def visitComparison_func(
+        self, ctx: ASLParser.Comparison_funcContext
+    ) -> ComparisonFunc:
+        comparison_op: ComparisonOperatorType = self.visit(ctx.comparison_op())
+
+        json_decl = ctx.json_value_decl()
+        json_str: str = json_decl.getText()
+        json_obj: json = json.loads(json_str)
+
+        return ComparisonFunc(operator=comparison_op, value=json_obj)
+
+    def visitDefault_decl(self, ctx: ASLParser.Default_declContext) -> DefaultDecl:
+        state_name = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return DefaultDecl(state_name=state_name)
+
+    def visitChoice_operator(
+        self, ctx: ASLParser.Choice_operatorContext
+    ) -> ComparisonComposite.ChoiceOp:
+        pt: Optional[TerminalNodeImpl] = Antlr4Utils.is_terminal(ctx.children[0])
+        if not pt:
+            raise ValueError(
+                f"Could not derive ChoiceOperator in block '{ctx.getText()}'."
+            )
+        return ComparisonComposite.ChoiceOp(pt.symbol.type)
+
+    def visitComparison_composite(
+        self, ctx: ASLParser.Comparison_compositeContext
+    ) -> ComparisonComposite:
+        choice_op: ComparisonComposite.ChoiceOp = self.visit(ctx.choice_operator())
+        rules: List[ChoiceRule] = list()
+        for child in ctx.children[1:]:
+            cmp: Optional[Component] = self.visit(child)
+            if not cmp:
+                continue
+            elif isinstance(cmp, ChoiceRule):
+                rules.append(cmp)
+
+        if choice_op == ComparisonComposite.ChoiceOp.Not:
+            if len(rules) != 1:
+                raise ValueError(
+                    f"ComparisonCompositeNot must carry only one ComparisonCompositeStmt in: '{ctx.getText()}'."
+                )
+            return ComparisonCompositeNot(rule=rules[0])
+        elif choice_op == ComparisonComposite.ChoiceOp.And:
+            return ComparisonCompositeAnd(rules=rules)
+        elif choice_op == ComparisonComposite.ChoiceOp.Or:
+            return ComparisonCompositeOr(rules=rules)
+
+    def visitChoice_rule_comparison_composite(
+        self, ctx: ASLParser.Choice_rule_comparison_compositeContext
+    ) -> ChoiceRule:
+        composite_stmts = ComparisonCompositeProps()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            composite_stmts.add(cmp)
+        return ChoiceRule(
+            comparison=composite_stmts.get(
+                typ=ComparisonComposite,
+                raise_on_missing=ValueError(
+                    f"Expecting a 'ComparisonComposite' definition at '{ctx.getText()}'."
+                ),
+            ),
+            next_stmt=composite_stmts.get(Next),
+        )
+
+    def visitChoice_rule_comparison_variable(
+        self, ctx: ASLParser.Choice_rule_comparison_variableContext
+    ) -> ChoiceRule:
+        comparison_stmts = TypedProps()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            comparison_stmts.add(cmp)
+        variable: Variable = comparison_stmts.get(
+            typ=Variable,
+            raise_on_missing=ValueError(
+                f"Expected a Variable declaration in '{ctx.getText()}'."
+            ),
+        )
+        comparison_func: ComparisonFunc = comparison_stmts.get(
+            typ=ComparisonFunc,
+            raise_on_missing=ValueError(
+                f"Expected a ComparisonFunc declaration in '{ctx.getText()}'."
+            ),
+        )
+        comparison_variable = ComparisonVariable(
+            variable=variable, func=comparison_func
+        )
+        return ChoiceRule(
+            comparison=comparison_variable, next_stmt=comparison_stmts.get(Next)
+        )
+
+    def visitChoices_decl(self, ctx: ASLParser.Choices_declContext) -> ChoicesDecl:
+        rules: List[ChoiceRule] = list()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if not cmp:
+                continue
+            elif isinstance(cmp, ChoiceRule):
+                rules.append(cmp)
+        return ChoicesDecl(rules=rules)
+
+    def visitError_decl(self, ctx: ASLParser.Error_declContext) -> ErrorDecl:
+        error = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return ErrorDecl(error=error)
+
+    def visitCause_decl(self, ctx: ASLParser.Cause_declContext) -> CauseDecl:
+        cause = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return CauseDecl(cause=cause)
+
+    def visitSeconds_decl(self, ctx: ASLParser.Seconds_declContext) -> Seconds:
+        return Seconds(seconds=int(ctx.INT().getText()))
+
+    def visitSeconds_path_decl(
+        self, ctx: ASLParser.Seconds_path_declContext
+    ) -> SecondsPath:
+        path = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return SecondsPath(path=path)
+
+    def visitItems_path_decl(self, ctx: ASLParser.Items_path_declContext) -> ItemsPath:
+        path = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return ItemsPath(items_path_src=path)
+
+    def visitMax_concurrency_decl(
+        self, ctx: ASLParser.Max_concurrency_declContext
+    ) -> MaxConcurrency:
+        return MaxConcurrency(num=int(ctx.INT().getText()))
+
+    def visitMode_decl(self, ctx: ASLParser.Mode_declContext) -> Mode:
+        mode_type: int = self.visit(ctx.mode_type())
+        return Mode(mode_type)
+
+    def visitMode_type(self, ctx: ASLParser.Mode_typeContext) -> int:
+        return ctx.children[0].symbol.type
+
+    def visitExecution_decl(
+        self, ctx: ASLParser.Execution_declContext
+    ) -> ExecutionType:
+        execution_type: int = self.visit(ctx.execution_type())
+        return ExecutionType(execution_type)
+
+    def visitExecution_type(self, ctx: ASLParser.Execution_typeContext) -> int:
+        return ctx.children[0].symbol.type
+
+    def visitTimestamp_decl(self, ctx: ASLParser.Seconds_path_declContext) -> Timestamp:
+        timestamp_str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        timestamp = Timestamp.parse_timestamp(timestamp_str)
+        return Timestamp(timestamp=timestamp)
+
+    def visitTimestamp_path_decl(
+        self, ctx: ASLParser.Timestamp_path_declContext
+    ) -> TimestampPath:
+        path = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return TimestampPath(path=path)
+
+    def visitProcessor_config_decl(
+        self, ctx: ASLParser.Processor_config_declContext
+    ) -> ProcessorConfig:
+        props = TypedProps()
+        for child in ctx.children:
+            cmp = self.visit(child)
+            props.add(cmp)
+        return ProcessorConfig(
+            mode=props.get(typ=Mode) or ProcessorConfig.DEFAULT_MODE,
+            execution_type=props.get(typ=ExecutionType)
+            or ProcessorConfig.DEFAULT_EXECUTION_TYPE,
+        )
+
+    def visitItem_processor_item(
+        self, ctx: ASLParser.Item_processor_itemContext
+    ) -> Component:
+        return self.visit(ctx.children[0])
+
+    def visitItem_processor_decl(
+        self, ctx: ASLParser.Item_processor_declContext
+    ) -> ItemProcessorDecl:
+        props = TypedProps()
+        for child in ctx.children:
+            cmp = self.visit(child)
+            props.add(cmp)
+        return ItemProcessorDecl(
+            comment=props.get(typ=Comment),
+            start_at=props.get(
+                typ=StartAt,
+                raise_on_missing=ValueError(
+                    f"Expected a StartAt declaration at '{ctx.getText()}'."
+                ),
+            ),
+            states=props.get(
+                typ=States,
+                raise_on_missing=ValueError(
+                    f"Expected a States declaration at '{ctx.getText()}'."
+                ),
+            ),
+            processor_config=props.get(typ=ProcessorConfig),
+        )
+
+    def visitIterator_decl(self, ctx: ASLParser.Iterator_declContext) -> IteratorDecl:
+        props = TypedProps()
+        for child in ctx.children:
+            cmp = self.visit(child)
+            props.add(cmp)
+        return IteratorDecl(
+            comment=props.get(typ=Comment),
+            start_at=props.get(
+                typ=StartAt,
+                raise_on_missing=ValueError(
+                    f"Expected a StartAt declaration at '{ctx.getText()}'."
+                ),
+            ),
+            states=props.get(
+                typ=States,
+                raise_on_missing=ValueError(
+                    f"Expected a States declaration at '{ctx.getText()}'."
+                ),
+            ),
+        )
+
+    def visitItem_selector_decl(
+        self, ctx: ASLParser.Item_selector_declContext
+    ) -> ItemSelector:
+        payload_tmpl: PayloadTmpl = self.visit(ctx.payload_tmpl_decl())
+        return ItemSelector(payload_tmpl=payload_tmpl)
+
+    def visitItem_reader_decl(
+        self, ctx: ASLParser.Item_reader_declContext
+    ) -> ItemReader:
+        props = StateProps()
+        for child in ctx.children[3:-1]:
+            cmp = self.visit(child)
+            props.add(cmp)
+        resource: Resource = props.get(
+            typ=Resource,
+            raise_on_missing=ValueError(
+                f"Expected a Resource declaration at '{ctx.getText()}'."
+            ),
+        )
+        return ItemReader(
+            resource=resource,
+            parameters=props.get(Parameters),
+            reader_config=props.get(ReaderConfig),
+        )
+
+    def visitReader_config_decl(
+        self, ctx: ASLParser.Reader_config_declContext
+    ) -> ReaderConfig:
+        props = TypedProps()
+        for child in ctx.children:
+            cmp = self.visit(child)
+            props.add(cmp)
+        return ReaderConfig(
+            input_type=props.get(
+                typ=InputType,
+                raise_on_missing=ValueError(
+                    f"Expected a InputType declaration at '{ctx.getText()}'."
+                ),
+            ),
+            max_items=props.get(typ=MaxItemsDecl),
+            csv_header_location=props.get(CSVHeaderLocation),
+            csv_headers=props.get(CSVHeaders),
+        )
+
+    def visitInput_type_decl(self, ctx: ASLParser.Input_type_declContext) -> InputType:
+        input_type = self._inner_string_of(ctx.keyword_or_string())
+        return InputType(input_type=input_type)
+
+    def visitCsv_header_location_decl(
+        self, ctx: ASLParser.Csv_header_location_declContext
+    ) -> CSVHeaderLocation:
+        value = self._inner_string_of(ctx.keyword_or_string())
+        return CSVHeaderLocation(csv_header_location_value=value)
+
+    def visitCsv_headers_decl(
+        self, ctx: ASLParser.Csv_headers_declContext
+    ) -> CSVHeaders:
+        csv_headers: List[str] = list()
+        for child in ctx.children[3:-1]:
+            maybe_str = Antlr4Utils.is_production(
+                pt=child, rule_index=ASLParser.RULE_keyword_or_string
+            )
+            if maybe_str is not None:
+                csv_headers.append(self._inner_string_of(maybe_str))
+        # TODO: check for empty headers behaviour.
+        return CSVHeaders(header_names=csv_headers)
+
+    def visitMax_items_path_decl(
+        self, ctx: ASLParser.Max_items_path_declContext
+    ) -> MaxItemsPath:
+        path: str = self._inner_string_of(parse_tree=ctx.STRINGPATH())
+        return MaxItemsPath(path=path)
+
+    def visitMax_items_decl(self, ctx: ASLParser.Max_items_declContext) -> MaxItems:
+        return MaxItems(max_items=int(ctx.INT().getText()))
+
+    def visitRetry_decl(self, ctx: ASLParser.Retry_declContext) -> RetryDecl:
+        retriers: List[RetrierDecl] = list()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, RetrierDecl):
+                retriers.append(cmp)
+        return RetryDecl(retriers=retriers)
+
+    def visitRetrier_decl(self, ctx: ASLParser.Retrier_declContext) -> RetrierDecl:
+        props = RetrierProps()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            props.add(cmp)
+        return RetrierDecl.from_retrier_props(props=props)
+
+    def visitRetrier_stmt(self, ctx: ASLParser.Retrier_stmtContext):
+        return self.visit(ctx.children[0])
+
+    def visitError_equals_decl(
+        self, ctx: ASLParser.Error_equals_declContext
+    ) -> ErrorEqualsDecl:
+        error_names: List[ErrorName] = list()
+        for child in ctx.children:
+            cmp = self.visit(child)
+            if isinstance(cmp, ErrorName):
+                error_names.append(cmp)
+        return ErrorEqualsDecl(error_names=error_names)
+
+    def visitError_name(self, ctx: ASLParser.Error_nameContext) -> ErrorName:
+        pt = ctx.children[0]
+
+        # Case: StatesErrorName.
+        prc: Optional[ParserRuleContext] = Antlr4Utils.is_production(
+            pt=pt, rule_index=ASLParser.RULE_states_error_name
+        )
+        if prc:
+            return self.visit(prc)
+
+        # Case CustomErrorName.
+        error_name = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return CustomErrorName(error_name=error_name)
+
+    def visitStates_error_name(
+        self, ctx: ASLParser.States_error_nameContext
+    ) -> StatesErrorName:
+        pt: Optional[TerminalNodeImpl] = Antlr4Utils.is_terminal(ctx.children[0])
+        if not pt:
+            raise ValueError(f"Could not derive ErrorName in block '{ctx.getText()}'.")
+        states_error_name_type = StatesErrorNameType(pt.symbol.type)
+        return StatesErrorName(states_error_name_type)
+
+    def visitInterval_seconds_decl(
+        self, ctx: ASLParser.Interval_seconds_declContext
+    ) -> IntervalSecondsDecl:
+        return IntervalSecondsDecl(seconds=int(ctx.INT().getText()))
+
+    def visitMax_attempts_decl(
+        self, ctx: ASLParser.Max_attempts_declContext
+    ) -> MaxAttemptsDecl:
+        return MaxAttemptsDecl(attempts=int(ctx.INT().getText()))
+
+    def visitBackoff_rate_decl(
+        self, ctx: ASLParser.Backoff_rate_declContext
+    ) -> BackoffRateDecl:
+        return BackoffRateDecl(rate=float(ctx.children[-1].getText()))
+
+    def visitCatch_decl(self, ctx: ASLParser.Catch_declContext) -> CatchDecl:
+        catchers: List[CatcherDecl] = list()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, CatcherDecl):
+                catchers.append(cmp)
+        return CatchDecl(catchers=catchers)
+
+    def visitCatcher_decl(self, ctx: ASLParser.Catcher_declContext) -> CatcherDecl:
+        props = CatcherProps()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            props.add(cmp)
+        return CatcherDecl.from_catcher_props(props=props)
+
+    def visitPayload_value_float(
+        self, ctx: ASLParser.Payload_value_floatContext
+    ) -> PayloadValueFloat:
+        return PayloadValueFloat(val=float(ctx.NUMBER().getText()))
+
+    def visitPayload_value_int(
+        self, ctx: ASLParser.Payload_value_intContext
+    ) -> PayloadValueInt:
+        return PayloadValueInt(val=int(ctx.INT().getText()))
+
+    def visitPayload_value_bool(
+        self, ctx: ASLParser.Payload_value_boolContext
+    ) -> PayloadValueBool:
+        bool_child: ParseTree = ctx.children[0]
+        bool_term: Optional[TerminalNodeImpl] = Antlr4Utils.is_terminal(bool_child)
+        if bool_term is None:
+            raise ValueError(
+                f"Could not derive PayloadValueBool from declaration context '{ctx.getText()}'."
+            )
+        bool_term_rule: int = bool_term.getSymbol().type
+        bool_val: bool = bool_term_rule == ASLLexer.TRUE
+        return PayloadValueBool(val=bool_val)
+
+    def visitPayload_value_null(
+        self, ctx: ASLParser.Payload_value_nullContext
+    ) -> PayloadValueNull:
+        return PayloadValueNull()
+
+    def visitPayload_value_str(
+        self, ctx: ASLParser.Payload_value_strContext
+    ) -> PayloadValueStr:
+        str_val = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        return PayloadValueStr(val=str_val)
+
+    def visitPayload_binding_path(
+        self, ctx: ASLParser.Payload_binding_pathContext
+    ) -> PayloadBindingPath:
+        string_dollar: str = self._inner_string_of(parse_tree=ctx.STRINGDOLLAR())
+        string_path: str = self._inner_string_of(parse_tree=ctx.STRINGPATH())
+        return PayloadBindingPath.from_raw(
+            string_dollar=string_dollar, string_path=string_path
+        )
+
+    def visitPayload_binding_path_context_obj(
+        self, ctx: ASLParser.Payload_binding_path_context_objContext
+    ) -> PayloadBindingPathContextObj:
+        string_dollar: str = self._inner_string_of(parse_tree=ctx.STRINGDOLLAR())
+        string_path_context_obj: str = self._inner_string_of(
+            parse_tree=ctx.STRINGPATHCONTEXTOBJ()
+        )
+        return PayloadBindingPathContextObj.from_raw(
+            string_dollar=string_dollar, string_path_context_obj=string_path_context_obj
+        )
+
+    def visitPayload_binding_intrinsic_func(
+        self, ctx: ASLParser.Payload_binding_intrinsic_funcContext
+    ) -> PayloadBindingIntrinsicFunc:
+        string_dollar: str = self._inner_string_of(parse_tree=ctx.STRINGDOLLAR())
+        intrinsic_func: str = self._inner_string_of(parse_tree=ctx.intrinsic_func())
+        return PayloadBindingIntrinsicFunc.from_raw(
+            string_dollar=string_dollar, intrinsic_func=intrinsic_func
+        )
+
+    def visitPayload_binding_value(
+        self, ctx: ASLParser.Payload_binding_valueContext
+    ) -> PayloadBindingValue:
+        field: str = self._inner_string_of(parse_tree=ctx.keyword_or_string())
+        value: PayloadValue = self.visit(ctx.payload_value_decl())
+        return PayloadBindingValue(field=field, value=value)
+
+    def visitPayload_arr_decl(
+        self, ctx: ASLParser.Payload_arr_declContext
+    ) -> PayloadArr:
+        payload_values: List[PayloadValue] = list()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, PayloadValue):
+                payload_values.append(cmp)
+        return PayloadArr(payload_values=payload_values)
+
+    def visitPayload_tmpl_decl(
+        self, ctx: ASLParser.Payload_tmpl_declContext
+    ) -> PayloadTmpl:
+        payload_bindings: List[PayloadBinding] = list()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            if isinstance(cmp, PayloadBinding):
+                payload_bindings.append(cmp)
+        return PayloadTmpl(payload_bindings=payload_bindings)
+
+    def visitPayload_value_decl(
+        self, ctx: ASLParser.Payload_value_declContext
+    ) -> PayloadValue:
+        value = ctx.children[0]
+        return self.visit(value)
+
+    def visitProgram_decl(self, ctx: ASLParser.Program_declContext) -> Program:
+        props = TypedProps()
+        for child in ctx.children:
+            cmp: Optional[Component] = self.visit(child)
+            props.add(cmp)
+
+        program = Program(
+            start_at=props.get(
+                typ=StartAt,
+                raise_on_missing=ValueError(
+                    f"No '{StartAt}' definition for Program in context: '{ctx.getText()}'."
+                ),
+            ),
+            states=props.get(
+                typ=States,
+                raise_on_missing=ValueError(
+                    f"No '{States}' definition for Program in context: '{ctx.getText()}'."
+                ),
+            ),
+            timeout_seconds=props.get(TimeoutSeconds),
+            comment=props.get(typ=Comment),
+            version=props.get(typ=Version),
+        )
+        return program
diff --git a/moto/stepfunctions/parser/asl/parse/typed_props.py b/moto/stepfunctions/parser/asl/parse/typed_props.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/parse/typed_props.py
@@ -0,0 +1,32 @@
+from collections import OrderedDict
+from typing import Any, Dict, Optional
+
+
+class TypedProps:
+    def __init__(self):
+        self._instance_by_type: Dict[type, Any] = OrderedDict()
+
+    def add(self, instance: Any) -> None:
+        self._add(type(instance), instance)
+
+    def _add(self, typ: type, instance: Any) -> None:
+        if instance is None:
+            return
+        if typ in self._instance_by_type:
+            raise ValueError(
+                f"Redefinition of type '{typ}', from '{self._instance_by_type[typ]}' to '{instance}'."
+            )
+        self._instance_by_type[typ] = instance
+
+    def get(
+        self, typ: type, raise_on_missing: Optional[Exception] = None
+    ) -> Optional[Any]:
+        if raise_on_missing and typ not in self._instance_by_type:
+            raise raise_on_missing
+        return self._instance_by_type.get(typ)
+
+    def __repr__(self):
+        return str(self._instance_by_type)
+
+    def __str__(self):
+        return repr(self)
diff --git a/moto/stepfunctions/parser/asl/utils/__init__.py b/moto/stepfunctions/parser/asl/utils/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/asl/utils/boto_client.py b/moto/stepfunctions/parser/asl/utils/boto_client.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/utils/boto_client.py
@@ -0,0 +1,29 @@
+import boto3
+from botocore.client import BaseClient
+from botocore.config import Config
+
+from moto.core.models import botocore_stubber
+from moto.settings import moto_server_port
+from moto.stepfunctions.parser.asl.component.common.timeouts.timeout import (
+    TimeoutSeconds,
+)
+
+
+def boto_client_for(region: str, account: str, service: str) -> BaseClient:
+    intercepting_boto_calls = botocore_stubber.enabled
+    kwargs = {}
+    if not intercepting_boto_calls:
+        kwargs["endpoint_url"] = f"http://localhost:{moto_server_port()}"
+    return boto3.client(
+        aws_access_key_id=account,
+        region_name=region,
+        service_name=service,
+        aws_secret_access_key="sk",
+        config=Config(
+            parameter_validation=False,
+            retries={"max_attempts": 0, "total_max_attempts": 1},
+            connect_timeout=TimeoutSeconds.DEFAULT_TIMEOUT_SECONDS,
+            read_timeout=TimeoutSeconds.DEFAULT_TIMEOUT_SECONDS,
+        ),
+        **kwargs,
+    )
diff --git a/moto/stepfunctions/parser/asl/utils/encoding.py b/moto/stepfunctions/parser/asl/utils/encoding.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/utils/encoding.py
@@ -0,0 +1,16 @@
+import datetime
+import json
+from json import JSONEncoder
+from typing import Any, Optional, Tuple
+
+
+class _DateTimeEncoder(JSONEncoder):
+    def default(self, o):
+        if isinstance(o, (datetime.date, datetime.datetime)):
+            return o.isoformat()
+        else:
+            return str(o)
+
+
+def to_json_str(obj: Any, separators: Optional[Tuple[str, str]] = None) -> str:
+    return json.dumps(obj, cls=_DateTimeEncoder, separators=separators)
diff --git a/moto/stepfunctions/parser/asl/utils/json_path.py b/moto/stepfunctions/parser/asl/utils/json_path.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/asl/utils/json_path.py
@@ -0,0 +1,21 @@
+import json
+
+from jsonpath_ng import parse
+
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+
+
+class JSONPathUtils:
+    @staticmethod
+    def extract_json(path: str, data: json) -> json:
+        input_expr = parse(path)
+        find_res = [match.value for match in input_expr.find(data)]
+        if find_res == list():
+            raise RuntimeError(
+                f"The JSONPath {path} could not be found in the input {to_json_str(data)}"
+            )
+        if len(find_res) == 1:
+            value = find_res[0]
+        else:
+            value = find_res
+        return value
diff --git a/moto/stepfunctions/parser/backend/__init__.py b/moto/stepfunctions/parser/backend/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/backend/execution.py b/moto/stepfunctions/parser/backend/execution.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/backend/execution.py
@@ -0,0 +1,186 @@
+from __future__ import annotations
+
+import datetime
+import logging
+from typing import Optional
+
+from moto.core.utils import iso_8601_datetime_with_milliseconds
+from moto.stepfunctions.models import Execution as SimpleExecution
+from moto.stepfunctions.models import StateMachine
+from moto.stepfunctions.parser.api import (
+    CloudWatchEventsExecutionDataDetails,
+    DescribeStateMachineForExecutionOutput,
+    ExecutionListItem,
+    ExecutionStatus,
+    InvalidName,
+    TraceHeader,
+)
+from moto.stepfunctions.parser.asl.eval.aws_execution_details import AWSExecutionDetails
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import (
+    ContextObjectInitData,
+)
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import (
+    Execution as ContextObjectExecution,
+)
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import (
+    StateMachine as ContextObjectStateMachine,
+)
+from moto.stepfunctions.parser.asl.eval.program_state import (
+    ProgramEnded,
+    ProgramError,
+    ProgramState,
+    ProgramStopped,
+    ProgramTimedOut,
+)
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+from moto.stepfunctions.parser.backend.execution_worker import ExecutionWorker
+from moto.stepfunctions.parser.backend.execution_worker_comm import ExecutionWorkerComm
+from moto.stepfunctions.parser.backend.state_machine import (
+    StateMachineInstance,
+    StateMachineVersion,
+)
+
+LOG = logging.getLogger(__name__)
+
+
+class BaseExecutionWorkerComm(ExecutionWorkerComm):
+    def __init__(self, execution: Execution):
+        self.execution: Execution = execution
+
+    def terminated(self) -> None:
+        exit_program_state: ProgramState = (
+            self.execution.exec_worker.env.program_state()
+        )
+        self.execution.stop_date = iso_8601_datetime_with_milliseconds()
+        if isinstance(exit_program_state, ProgramEnded):
+            self.execution.status = ExecutionStatus.SUCCEEDED
+            self.execution.output = to_json_str(
+                self.execution.exec_worker.env.inp, separators=(",", ":")
+            )
+        elif isinstance(exit_program_state, ProgramStopped):
+            self.execution.status = ExecutionStatus.ABORTED
+        elif isinstance(exit_program_state, ProgramError):
+            self.execution.status = ExecutionStatus.FAILED
+            self.execution.error = exit_program_state.error.get("error")
+            self.execution.cause = exit_program_state.error.get("cause")
+        elif isinstance(exit_program_state, ProgramTimedOut):
+            self.execution.status = ExecutionStatus.TIMED_OUT
+        else:
+            raise RuntimeWarning(
+                f"Execution ended with unsupported ProgramState type '{type(exit_program_state)}'."
+            )
+
+
+class Execution(SimpleExecution):
+    def __init__(
+        self,
+        name: str,
+        role_arn: str,
+        account_id: str,
+        region_name: str,
+        state_machine: StateMachine,
+        input_data: Optional[dict] = None,
+        trace_header: Optional[TraceHeader] = None,
+    ):
+        super().__init__(
+            region_name=region_name,
+            account_id=account_id,
+            state_machine_name=state_machine.name,
+            state_machine_arn=state_machine.arn,
+            execution_name=name,
+            execution_input=input_data,
+        )
+        self.role_arn = role_arn
+        self.state_machine = state_machine
+        self.input_data = input_data
+        self.input_details = CloudWatchEventsExecutionDataDetails(included=True)
+        self.trace_header = trace_header
+        self.status = None
+        self.output_details = CloudWatchEventsExecutionDataDetails(included=True)
+        self.exec_worker: Optional[ExecutionWorker] = None
+
+    def to_describe_state_machine_for_execution_output(
+        self,
+    ) -> DescribeStateMachineForExecutionOutput:
+        state_machine: StateMachineInstance = self.state_machine
+        state_machine_arn = (
+            state_machine.source_arn
+            if isinstance(state_machine, StateMachineVersion)
+            else state_machine.arn
+        )
+        out = DescribeStateMachineForExecutionOutput(
+            stateMachineArn=state_machine_arn,
+            name=state_machine.name,
+            definition=state_machine.definition,
+            roleArn=self.role_arn,
+            # The date and time the state machine associated with an execution was updated.
+            updateDate=state_machine.create_date,
+        )
+        revision_id = self.state_machine.revision_id
+        if self.state_machine.revision_id:
+            out["revisionId"] = revision_id
+        return out
+
+    def to_execution_list_item(self) -> ExecutionListItem:
+        if isinstance(self.state_machine, StateMachineVersion):
+            state_machine_arn = self.state_machine.source_arn
+            state_machine_version_arn = self.state_machine.arn
+        else:
+            state_machine_arn = self.state_machine.arn
+            state_machine_version_arn = None
+
+        item = ExecutionListItem(
+            executionArn=self.execution_arn,
+            stateMachineArn=state_machine_arn,
+            name=self.name,
+            status=self.status,
+            startDate=self.start_date,
+            stopDate=self.stop_date,
+        )
+        if state_machine_version_arn is not None:
+            item["stateMachineVersionArn"] = state_machine_version_arn
+        return item
+
+    def to_history_output(self):
+        return self.exec_worker.env.event_history.get_event_history()
+
+    @staticmethod
+    def _to_serialized_date(timestamp: datetime.datetime) -> str:
+        """See test in tests.aws.services.stepfunctions.v2.base.test_base.TestSnfBase.test_execution_dateformat"""
+        return f'{timestamp.astimezone(datetime.timezone.utc).strftime("%Y-%m-%dT%H:%M:%S.%f")[:-3]}Z'
+
+    def start(self) -> None:
+        # TODO: checks exec_worker does not exists already?
+        if self.exec_worker:
+            raise InvalidName()  # TODO.
+        self.exec_worker = ExecutionWorker(
+            definition=self.state_machine.definition,
+            input_data=self.input_data,
+            exec_comm=BaseExecutionWorkerComm(self),
+            context_object_init=ContextObjectInitData(
+                Execution=ContextObjectExecution(
+                    Id=self.execution_arn,
+                    Input=self.input_data,
+                    Name=self.name,
+                    RoleArn=self.role_arn,
+                    StartTime=self.start_date,
+                ),
+                StateMachine=ContextObjectStateMachine(
+                    Id=self.state_machine.arn,
+                    Name=self.state_machine.name,
+                ),
+            ),
+            aws_execution_details=AWSExecutionDetails(
+                account=self.account_id, region=self.region_name, role_arn=self.role_arn
+            ),
+        )
+        self.status = ExecutionStatus.RUNNING
+        self.exec_worker.start()
+
+    def stop(
+        self, stop_date: datetime.datetime, error: Optional[str], cause: Optional[str]
+    ):
+        exec_worker: Optional[ExecutionWorker] = self.exec_worker
+        if not exec_worker:
+            raise RuntimeError("No running executions.")
+        exec_worker.stop(stop_date=stop_date, cause=cause, error=error)
diff --git a/moto/stepfunctions/parser/backend/execution_worker.py b/moto/stepfunctions/parser/backend/execution_worker.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/backend/execution_worker.py
@@ -0,0 +1,84 @@
+import copy
+import datetime
+from threading import Thread
+from typing import Final, Optional
+
+from moto.stepfunctions.parser.api import (
+    Definition,
+    ExecutionStartedEventDetails,
+    HistoryEventExecutionDataDetails,
+    HistoryEventType,
+)
+from moto.stepfunctions.parser.asl.component.program.program import Program
+from moto.stepfunctions.parser.asl.eval.aws_execution_details import AWSExecutionDetails
+from moto.stepfunctions.parser.asl.eval.contextobject.contex_object import (
+    ContextObjectInitData,
+)
+from moto.stepfunctions.parser.asl.eval.environment import Environment
+from moto.stepfunctions.parser.asl.eval.event.event_detail import EventDetails
+from moto.stepfunctions.parser.asl.eval.event.event_history import EventHistoryContext
+from moto.stepfunctions.parser.asl.parse.asl_parser import AmazonStateLanguageParser
+from moto.stepfunctions.parser.asl.utils.encoding import to_json_str
+from moto.stepfunctions.parser.backend.execution_worker_comm import ExecutionWorkerComm
+
+
+class ExecutionWorker:
+    env: Optional[Environment]
+    _definition: Definition
+    _input_data: Optional[dict]
+    _exec_comm: Final[ExecutionWorkerComm]
+    _context_object_init: Final[ContextObjectInitData]
+    _aws_execution_details: Final[AWSExecutionDetails]
+
+    def __init__(
+        self,
+        definition: Definition,
+        input_data: Optional[dict],
+        context_object_init: ContextObjectInitData,
+        aws_execution_details: AWSExecutionDetails,
+        exec_comm: ExecutionWorkerComm,
+    ):
+        self._definition = definition
+        self._input_data = input_data
+        self._exec_comm = exec_comm
+        self._context_object_init = context_object_init
+        self._aws_execution_details = aws_execution_details
+        self.env = None
+
+    def _execution_logic(self) -> None:
+        program: Program = AmazonStateLanguageParser.parse(self._definition)
+        self.env = Environment(
+            aws_execution_details=self._aws_execution_details,
+            context_object_init=self._context_object_init,
+            event_history_context=EventHistoryContext.of_program_start(),
+        )
+        self.env.inp = copy.deepcopy(
+            self._input_data
+        )  # The program will mutate the input_data, which is otherwise constant in regard to the execution value.
+
+        self.env.event_history.add_event(
+            context=self.env.event_history_context,
+            hist_type_event=HistoryEventType.ExecutionStarted,
+            event_detail=EventDetails(
+                executionStartedEventDetails=ExecutionStartedEventDetails(
+                    input=to_json_str(self.env.inp),
+                    inputDetails=HistoryEventExecutionDataDetails(
+                        truncated=False
+                    ),  # Always False for api calls.
+                    roleArn=self._aws_execution_details.role_arn,
+                )
+            ),
+            update_source_event_id=False,
+        )
+
+        program.eval(self.env)
+
+        self._exec_comm.terminated()
+
+    def start(self) -> None:
+        Thread(target=self._execution_logic).start()
+
+    def stop(
+        self, stop_date: datetime.datetime, error: Optional[str], cause: Optional[str]
+    ) -> None:
+        self.env.set_stop(stop_date=stop_date, cause=cause, error=error)
diff --git a/moto/stepfunctions/parser/backend/execution_worker_comm.py b/moto/stepfunctions/parser/backend/execution_worker_comm.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/backend/execution_worker_comm.py
@@ -0,0 +1,13 @@
+import abc
+
+
+class ExecutionWorkerComm(abc.ABC):
+    """
+    Defines abstract callbacks for Execution's workers to report their progress, such as termination.
+    Execution instances define custom callbacks routines to update their state according to the latest
+    relevant state machine evaluation steps.
+    """
+
+    @abc.abstractmethod
+    def terminated(self) -> None:
+        ...
diff --git a/moto/stepfunctions/parser/backend/state_machine.py b/moto/stepfunctions/parser/backend/state_machine.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/backend/state_machine.py
@@ -0,0 +1,238 @@
+from __future__ import annotations
+
+import abc
+import datetime
+import json
+from collections import OrderedDict
+from typing import Dict, Final, Optional
+
+from moto.moto_api._internal import mock_random
+from moto.stepfunctions.parser.api import (
+    Definition,
+    DescribeStateMachineOutput,
+    LoggingConfiguration,
+    Name,
+    RevisionId,
+    StateMachineListItem,
+    StateMachineStatus,
+    StateMachineType,
+    StateMachineVersionListItem,
+    Tag,
+    TagKeyList,
+    TagList,
+    TracingConfiguration,
+    ValidationException,
+)
+
+
+class StateMachineInstance:
+    name: Name
+    arn: str
+    revision_id: Optional[RevisionId]
+    definition: Definition
+    role_arn: str
+    create_date: datetime.datetime
+    sm_type: StateMachineType
+    logging_config: Optional[LoggingConfiguration]
+    tags: Optional[TagList]
+    tracing_config: Optional[TracingConfiguration]
+
+    def __init__(
+        self,
+        name: Name,
+        arn: str,
+        definition: Definition,
+        role_arn: str,
+        create_date: Optional[datetime.datetime] = None,
+        sm_type: Optional[StateMachineType] = None,
+        logging_config: Optional[LoggingConfiguration] = None,
+        tags: Optional[TagList] = None,
+        tracing_config: Optional[TracingConfiguration] = None,
+    ):
+        self.name = name
+        self.arn = arn
+        self.revision_id = None
+        self.definition = definition
+        self.role_arn = role_arn
+        self.create_date = create_date or datetime.datetime.now(
+            tz=datetime.timezone.utc
+        )
+        self.sm_type = sm_type or StateMachineType.STANDARD
+        self.logging_config = logging_config
+        self.tags = tags
+        self.tracing_config = tracing_config
+
+    def describe(self) -> DescribeStateMachineOutput:
+        describe_output = DescribeStateMachineOutput(
+            stateMachineArn=self.arn,
+            name=self.name,
+            status=StateMachineStatus.ACTIVE,
+            definition=self.definition,
+            roleArn=self.role_arn,
+            type=self.sm_type,
+            creationDate=self.create_date,
+            loggingConfiguration=self.logging_config,
+        )
+        if self.revision_id:
+            describe_output["revisionId"] = self.revision_id
+        return describe_output
+
+    @abc.abstractmethod
+    def itemise(self):
+        ...
+
+
+class TagManager:
+    _tags: Final[Dict[str, Optional[str]]]
+
+    def __init__(self):
+        self._tags = OrderedDict()
+
+    @staticmethod
+    def _validate_key_value(key: str) -> None:
+        if not key:
+            raise ValidationException()
+
+    @staticmethod
+    def _validate_tag_value(value: str) -> None:
+        if value is None:
+            raise ValidationException()
+
+    def add_all(self, tags: TagList) -> None:
+        for tag in tags:
+            tag_key = tag["key"]
+            tag_value = tag["value"]
+            self._validate_key_value(key=tag_key)
+            self._validate_tag_value(value=tag_value)
+            self._tags[tag_key] = tag_value
+
+    def remove_all(self, keys: TagKeyList):
+        for key in keys:
+            self._validate_key_value(key=key)
+            self._tags.pop(key, None)
+
+    def to_tag_list(self) -> TagList:
+        tag_list = list()
+        for key, value in self._tags.items():
+            tag_list.append(Tag(key=key, value=value))
+        return tag_list
+
+
+class StateMachineRevision(StateMachineInstance):
+    _next_version_number: int
+    versions: Final[Dict[RevisionId, str]]
+    tag_manager: Final[TagManager]
+
+    def __init__(
+        self,
+        name: Name,
+        arn: str,
+        definition: Definition,
+        role_arn: str,
+        create_date: Optional[datetime.datetime] = None,
+        sm_type: Optional[StateMachineType] = None,
+        logging_config: Optional[LoggingConfiguration] = None,
+        tags: Optional[TagList] = None,
+        tracing_config: Optional[TracingConfiguration] = None,
+    ):
+        super().__init__(
+            name,
+            arn,
+            definition,
+            role_arn,
+            create_date,
+            sm_type,
+            logging_config,
+            tags,
+            tracing_config,
+        )
+        self.versions = dict()
+        self._version_number = 0
+        self.tag_manager = TagManager()
+
+    def create_revision(
+        self, definition: Optional[str], role_arn: Optional[str]
+    ) -> Optional[RevisionId]:
+        update_definition = definition and json.loads(definition) != json.loads(
+            self.definition
+        )
+        if update_definition:
+            self.definition = definition
+
+        update_role_arn = role_arn and role_arn != self.role_arn
+        if update_role_arn:
+            self.role_arn = role_arn
+
+        if any([update_definition, update_role_arn]):
+            self.revision_id = str(mock_random.uuid4())
+
+        return self.revision_id
+
+    def create_version(
+        self, description: Optional[str]
+    ) -> Optional[StateMachineVersion]:
+        if self.revision_id not in self.versions:
+            self._version_number += 1
+            version = StateMachineVersion(
+                self, version=self._version_number, description=description
+            )
+            self.versions[self.revision_id] = version.arn
+
+            return version
+        return None
+
+    def delete_version(self, state_machine_version_arn: str) -> None:
+        source_revision_id = None
+        for revision_id, version_arn in self.versions.items():
+            if version_arn == state_machine_version_arn:
+                source_revision_id = revision_id
+                break
+        self.versions.pop(source_revision_id, None)
+
+    def itemise(self) -> StateMachineListItem:
+        return StateMachineListItem(
+            stateMachineArn=self.arn,
+            name=self.name,
+            type=self.sm_type,
+            creationDate=self.create_date,
+        )
+
+
+class StateMachineVersion(StateMachineInstance):
+    source_arn: str
+    version: int
+    description: Optional[str]
+
+    def __init__(
+        self,
+        state_machine_revision: StateMachineRevision,
+        version: int,
+        description: Optional[str],
+    ):
+        version_arn = f"{state_machine_revision.arn}:{version}"
+        super().__init__(
+            name=state_machine_revision.name,
+            arn=version_arn,
+            definition=state_machine_revision.definition,
+            role_arn=state_machine_revision.role_arn,
+            create_date=datetime.datetime.now(tz=datetime.timezone.utc),
+            sm_type=state_machine_revision.sm_type,
+            logging_config=state_machine_revision.logging_config,
+            tags=state_machine_revision.tags,
+            tracing_config=state_machine_revision.tracing_config,
+        )
+        self.source_arn = state_machine_revision.arn
+        self.revision_id = state_machine_revision.revision_id
+        self.version = version
+        self.description = description
+
+    def describe(self) -> DescribeStateMachineOutput:
+        describe_output: DescribeStateMachineOutput = super().describe()
+        if self.description:
+            describe_output["description"] = self.description
+        return describe_output
+
+    def itemise(self) -> StateMachineVersionListItem:
+        return StateMachineVersionListItem(
+            stateMachineVersionArn=self.arn, creationDate=self.create_date
+        )
diff --git a/moto/stepfunctions/parser/models.py b/moto/stepfunctions/parser/models.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/models.py
@@ -0,0 +1,256 @@
+import copy
+import json
+from typing import Any, Dict, List, Optional
+
+from moto.core.common_models import BackendDict
+from moto.stepfunctions.models import StateMachine, StepFunctionBackend
+from moto.stepfunctions.parser.api import (
+    Definition,
+    ExecutionStatus,
+    GetExecutionHistoryOutput,
+    InvalidDefinition,
+    InvalidExecutionInput,
+    InvalidToken,
+    LoggingConfiguration,
+    MissingRequiredParameter,
+    Name,
+    Publish,
+    ResourceNotFound,
+    SendTaskFailureOutput,
+    SendTaskHeartbeatOutput,
+    SendTaskSuccessOutput,
+    SensitiveCause,
+    SensitiveData,
+    SensitiveError,
+    TaskDoesNotExist,
+    TaskTimedOut,
+    TaskToken,
+    TraceHeader,
+    TracingConfiguration,
+    VersionDescription,
+)
+from moto.stepfunctions.parser.asl.component.state.state_execution.state_map.iteration.itemprocessor.map_run_record import (
+    MapRunRecord,
+)
+from moto.stepfunctions.parser.asl.eval.callback.callback import (
+    CallbackConsumerTimeout,
+    CallbackNotifyConsumerError,
+    CallbackOutcomeFailure,
+    CallbackOutcomeSuccess,
+)
+from moto.stepfunctions.parser.asl.parse.asl_parser import (
+    AmazonStateLanguageParser,
+    ASLParserException,
+)
+from moto.stepfunctions.parser.backend.execution import Execution
+
+
+class StepFunctionsParserBackend(StepFunctionBackend):
+    def _get_executions(self, execution_status: Optional[ExecutionStatus] = None):
+        executions = []
+        for sm in self.state_machines:
+            for execution in sm.executions:
+                if execution_status is None or execution_status == execution.status:
+                    executions.append(execution)
+        return executions
+
+    def _revision_by_name(self, name: str) -> Optional[StateMachine]:
+        for state_machine in self.state_machines:
+            if state_machine.name == name:
+                return state_machine
+        return None
+
+    @staticmethod
+    def _validate_definition(definition: str):
+        # Validate
+        # TODO: pass through static analyser.
+        try:
+            AmazonStateLanguageParser.parse(definition)
+        except ASLParserException as asl_parser_exception:
+            invalid_definition = InvalidDefinition()
+            invalid_definition.message = repr(asl_parser_exception)
+            raise invalid_definition
+        except Exception as exception:
+            exception_name = exception.__class__.__name__
+            exception_args = list(exception.args)
+            invalid_definition = InvalidDefinition()
+            invalid_definition.message = f"Error={exception_name} Args={exception_args} in definition '{definition}'."
+            raise invalid_definition
+
+    def create_state_machine(
+        self,
+        name: str,
+        definition: str,
+        roleArn: str,
+        tags: Optional[List[Dict[str, str]]] = None,
+    ) -> StateMachine:
+
+        StepFunctionsParserBackend._validate_definition(definition=definition)
+
+        return super().create_state_machine(
+            name=name, definition=definition, roleArn=roleArn, tags=tags
+        )
+
+    def send_task_heartbeat(self, task_token: TaskToken) -> SendTaskHeartbeatOutput:
+        running_executions = self._get_executions(ExecutionStatus.RUNNING)
+        for execution in running_executions:
+            try:
+                if execution.exec_worker.env.callback_pool_manager.heartbeat(
+                    callback_id=task_token
+                ):
+                    return
+            except CallbackNotifyConsumerError as consumer_error:
+                if isinstance(consumer_error, CallbackConsumerTimeout):
+                    raise TaskTimedOut()
+                else:
+                    raise TaskDoesNotExist()
+        raise InvalidToken()
+
+    def send_task_success(
+        self, task_token: TaskToken, output: SensitiveData
+    ) -> SendTaskSuccessOutput:
+        outcome = CallbackOutcomeSuccess(callback_id=task_token, output=output)
+        running_executions = self._get_executions(ExecutionStatus.RUNNING)
+        for execution in running_executions:
+            try:
+                if execution.exec_worker.env.callback_pool_manager.notify(
+                    callback_id=task_token, outcome=outcome
+                ):
+                    return
+            except CallbackNotifyConsumerError as consumer_error:
+                if isinstance(consumer_error, CallbackConsumerTimeout):
+                    raise TaskTimedOut()
+                else:
+                    raise TaskDoesNotExist()
+        raise InvalidToken()
+
+    def send_task_failure(
+        self,
+        task_token: TaskToken,
+        error: SensitiveError = None,
+        cause: SensitiveCause = None,
+    ) -> SendTaskFailureOutput:
+        outcome = CallbackOutcomeFailure(
+            callback_id=task_token, error=error, cause=cause
+        )
+        for execution in self._get_executions():
+            try:
+                if execution.exec_worker.env.callback_pool_manager.notify(
+                    callback_id=task_token, outcome=outcome
+                ):
+                    return SendTaskFailureOutput()
+            except CallbackNotifyConsumerError as consumer_error:
+                if isinstance(consumer_error, CallbackConsumerTimeout):
+                    raise TaskTimedOut()
+                else:
+                    raise TaskDoesNotExist()
+        raise InvalidToken()
+
+    def start_execution(
+        self,
+        state_machine_arn: str,
+        name: Name = None,
+        execution_input: SensitiveData = None,
+        trace_header: TraceHeader = None,
+    ) -> Execution:
+        state_machine = self.describe_state_machine(state_machine_arn)
+
+        # Update event change parameters about the state machine and should not affect those about this execution.
+        state_machine_clone = copy.deepcopy(state_machine)
+
+        if execution_input is None:
+            input_data = dict()
+        else:
+            try:
+                input_data = json.loads(execution_input)
+            except Exception as ex:
+                raise InvalidExecutionInput(
+                    str(ex)
+                )  # TODO: report parsing error like AWS.
+
+        exec_name = name  # TODO: validate name format
+
+        execution = Execution(
+            name=exec_name,
+            role_arn=state_machine_clone.roleArn,
+            account_id=self.account_id,
+            region_name=self.region_name,
+            state_machine=state_machine_clone,
+            input_data=input_data,
+            trace_header=trace_header,
+        )
+        state_machine.executions.append(execution)
+
+        execution.start()
+        return execution
+
+    def update_state_machine(
+        self,
+        arn: str,
+        definition: Definition = None,
+        role_arn: str = None,
+        logging_configuration: LoggingConfiguration = None,
+        tracing_configuration: TracingConfiguration = None,
+        publish: Publish = None,
+        version_description: VersionDescription = None,
+    ) -> StateMachine:
+        if not any(
+            [definition, role_arn, logging_configuration, tracing_configuration]
+        ):
+            raise MissingRequiredParameter(
+                "Either the definition, the role ARN, the LoggingConfiguration, or the TracingConfiguration must be specified"
+            )
+
+        if definition is not None:
+            self._validate_definition(definition=definition)
+
+        return super().update_state_machine(arn, definition, role_arn)
+
+    def describe_map_run(self, map_run_arn: str) -> Dict[str, Any]:
+        for execution in self._get_executions():
+            map_run_record: Optional[
+                MapRunRecord
+            ] = execution.exec_worker.env.map_run_record_pool_manager.get(map_run_arn)
+            if map_run_record is not None:
+                return map_run_record.describe()
+        raise ResourceNotFound()
+
+    def list_map_runs(self, execution_arn: str) -> Dict[str, Any]:
+        """
+        Pagination is not yet implemented
+        """
+        execution = self.describe_execution(execution_arn=execution_arn)
+        map_run_records: List[
+            MapRunRecord
+        ] = execution.exec_worker.env.map_run_record_pool_manager.get_all()
+        return dict(
+            mapRuns=[map_run_record.to_json() for map_run_record in map_run_records]
+        )
+
+    def update_map_run(
+        self,
+        map_run_arn: str,
+        max_concurrency: int,
+        tolerated_failure_count: str,
+        tolerated_failure_percentage: str,
+    ) -> None:
+        # TODO: investigate behaviour of empty requests.
+        for execution in self._get_executions():
+            map_run_record = execution.exec_worker.env.map_run_record_pool_manager.get(
+                map_run_arn
+            )
+            if map_run_record is not None:
+                map_run_record.update(
+                    max_concurrency=max_concurrency,
+                    tolerated_failure_count=tolerated_failure_count,
+                    tolerated_failure_percentage=tolerated_failure_percentage,
+                )
+                return
+        raise ResourceNotFound()
+
+    def get_execution_history(self, execution_arn: str) -> GetExecutionHistoryOutput:
+        execution = self.describe_execution(execution_arn=execution_arn)
+        return execution.to_history_output()
+
+
+stepfunctions_parser_backends = BackendDict(StepFunctionsParserBackend, "stepfunctions")
diff --git a/moto/stepfunctions/parser/resource_providers/__init__.py b/moto/stepfunctions/parser/resource_providers/__init__.py
new file mode 100644
diff --git a/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_activity.py b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_activity.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_activity.py
@@ -0,0 +1,119 @@
+# LocalStack Resource Provider Scaffolding v2
+from __future__ import annotations
+
+from pathlib import Path
+from typing import List, Optional, TypedDict
+
+import localstack.services.cloudformation.provider_utils as util
+from localstack.services.cloudformation.resource_provider import (
+    OperationStatus,
+    ProgressEvent,
+    ResourceProvider,
+    ResourceRequest,
+)
+
+
+class StepFunctionsActivityProperties(TypedDict):
+    Name: Optional[str]
+    Arn: Optional[str]
+    Tags: Optional[List[TagsEntry]]
+
+
+class TagsEntry(TypedDict):
+    Key: Optional[str]
+    Value: Optional[str]
+
+
+REPEATED_INVOCATION = "repeated_invocation"
+
+
+class StepFunctionsActivityProvider(ResourceProvider[StepFunctionsActivityProperties]):
+    TYPE = "AWS::StepFunctions::Activity"  # Autogenerated. Don't change
+    SCHEMA = util.get_schema_path(Path(__file__))  # Autogenerated. Don't change
+
+    def create(
+        self,
+        request: ResourceRequest[StepFunctionsActivityProperties],
+    ) -> ProgressEvent[StepFunctionsActivityProperties]:
+        """
+        Create a new resource.
+
+        Primary identifier fields:
+          - /properties/Arn
+
+        Required properties:
+          - Name
+
+        Create-only properties:
+          - /properties/Name
+
+        Read-only properties:
+          - /properties/Arn
+
+        IAM permissions required:
+          - states:CreateActivity
+
+        """
+        model = request.desired_state
+        step_functions = request.aws_client_factory.stepfunctions
+        if not model.get("Tags"):
+            response = step_functions.create_activity(name=model["Name"])
+        else:
+            response = step_functions.create_activity(
+                name=model["Name"], tags=model["Tags"]
+            )
+        model["Arn"] = response["activityArn"]
+
+        return ProgressEvent(
+            status=OperationStatus.SUCCESS,
+            resource_model=model,
+            custom_context=request.custom_context,
+        )
+
+    def read(
+        self,
+        request: ResourceRequest[StepFunctionsActivityProperties],
+    ) -> ProgressEvent[StepFunctionsActivityProperties]:
+        """
+        Fetch resource information
+
+        IAM permissions required:
+          - states:DescribeActivity
+          - states:ListTagsForResource
+        """
+        raise NotImplementedError
+
+    def delete(
+        self,
+        request: ResourceRequest[StepFunctionsActivityProperties],
+    ) -> ProgressEvent[StepFunctionsActivityProperties]:
+        """
+        Delete a resource
+
+        IAM permissions required:
+          - states:DeleteActivity
+        """
+        model = request.desired_state
+        step_functions = request.aws_client_factory.stepfunctions
+
+        step_functions.delete_activity(activityArn=model["Arn"])
+
+        return ProgressEvent(
+            status=OperationStatus.SUCCESS,
+            resource_model=model,
+            custom_context=request.custom_context,
+        )
+
+    def update(
+        self,
+        request: ResourceRequest[StepFunctionsActivityProperties],
+    ) -> ProgressEvent[StepFunctionsActivityProperties]:
+        """
+        Update a resource
+
+        IAM permissions required:
+          - states:ListTagsForResource
+          - states:TagResource
+          - states:UntagResource
+        """
+        raise NotImplementedError
diff --git a/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_activity_plugin.py b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_activity_plugin.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_activity_plugin.py
@@ -0,0 +1,20 @@
+from typing import Optional, Type
+
+from localstack.services.cloudformation.resource_provider import (
+    CloudFormationResourceProviderPlugin,
+    ResourceProvider,
+)
+
+
+class StepFunctionsActivityProviderPlugin(CloudFormationResourceProviderPlugin):
+    name = "AWS::StepFunctions::Activity"
+
+    def __init__(self):
+        self.factory: Optional[Type[ResourceProvider]] = None
+
+    def load(self):
+        from localstack.services.stepfunctions.resource_providers.aws_stepfunctions_activity import (
+            StepFunctionsActivityProvider,
+        )
+
+        self.factory = StepFunctionsActivityProvider
diff --git a/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_statemachine.py b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_statemachine.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_statemachine.py
@@ -0,0 +1,238 @@
+# LocalStack Resource Provider Scaffolding v2
+from __future__ import annotations
+
+import json
+import re
+from pathlib import Path
+from typing import Dict, List, Optional, TypedDict
+
+import localstack.services.cloudformation.provider_utils as util
+from localstack.services.cloudformation.resource_provider import (
+    LOG,
+    OperationStatus,
+    ProgressEvent,
+    ResourceProvider,
+    ResourceRequest,
+)
+from localstack.utils.strings import to_str
+
+
+class StepFunctionsStateMachineProperties(TypedDict):
+    RoleArn: Optional[str]
+    Arn: Optional[str]
+    Definition: Optional[dict]
+    DefinitionS3Location: Optional[S3Location]
+    DefinitionString: Optional[str]
+    DefinitionSubstitutions: Optional[dict]
+    LoggingConfiguration: Optional[LoggingConfiguration]
+    Name: Optional[str]
+    StateMachineName: Optional[str]
+    StateMachineRevisionId: Optional[str]
+    StateMachineType: Optional[str]
+    Tags: Optional[List[TagsEntry]]
+    TracingConfiguration: Optional[TracingConfiguration]
+
+
+class CloudWatchLogsLogGroup(TypedDict):
+    LogGroupArn: Optional[str]
+
+
+class LogDestination(TypedDict):
+    CloudWatchLogsLogGroup: Optional[CloudWatchLogsLogGroup]
+
+
+class LoggingConfiguration(TypedDict):
+    Destinations: Optional[List[LogDestination]]
+    IncludeExecutionData: Optional[bool]
+    Level: Optional[str]
+
+
+class TracingConfiguration(TypedDict):
+    Enabled: Optional[bool]
+
+
+class S3Location(TypedDict):
+    Bucket: Optional[str]
+    Key: Optional[str]
+    Version: Optional[str]
+
+
+class TagsEntry(TypedDict):
+    Key: Optional[str]
+    Value: Optional[str]
+
+
+REPEATED_INVOCATION = "repeated_invocation"
+
+
+class StepFunctionsStateMachineProvider(
+    ResourceProvider[StepFunctionsStateMachineProperties]
+):
+    TYPE = "AWS::StepFunctions::StateMachine"  # Autogenerated. Don't change
+    SCHEMA = util.get_schema_path(Path(__file__))  # Autogenerated. Don't change
+
+    def create(
+        self,
+        request: ResourceRequest[StepFunctionsStateMachineProperties],
+    ) -> ProgressEvent[StepFunctionsStateMachineProperties]:
+        """
+        Create a new resource.
+
+        Primary identifier fields:
+          - /properties/Arn
+
+        Required properties:
+          - RoleArn
+
+        Create-only properties:
+          - /properties/StateMachineName
+          - /properties/StateMachineType
+
+        Read-only properties:
+          - /properties/Arn
+          - /properties/Name
+          - /properties/StateMachineRevisionId
+
+        IAM permissions required:
+          - states:CreateStateMachine
+          - iam:PassRole
+          - s3:GetObject
+
+        """
+        model = request.desired_state
+        step_function = request.aws_client_factory.stepfunctions
+
+        if not model.get("StateMachineName"):
+            model["StateMachineName"] = util.generate_default_name(
+                stack_name=request.stack_name,
+                logical_resource_id=request.logical_resource_id,
+            )
+
+        params = {
+            "name": model.get("StateMachineName"),
+            "roleArn": model.get("RoleArn"),
+            "type": model.get("StateMachineType", "STANDARD"),
+        }
+
+        # get definition
+        s3_client = request.aws_client_factory.s3
+
+        definition_str = self._get_definition(model, s3_client)
+
+        params["definition"] = definition_str
+
+        response = step_function.create_state_machine(**params)
+
+        model["Arn"] = response["stateMachineArn"]
+        model["Name"] = model["StateMachineName"]
+
+        return ProgressEvent(
+            status=OperationStatus.SUCCESS,
+            resource_model=model,
+            custom_context=request.custom_context,
+        )
+
+    def _get_definition(self, model, s3_client):
+        if "DefinitionString" in model:
+            definition_str = model.get("DefinitionString")
+        elif "DefinitionS3Location" in model:
+            # TODO: currently not covered by tests - add a test to mimick the behavior of "sam deploy ..."
+            s3_location = model.get("DefinitionS3Location")
+            LOG.debug("Fetching state machine definition from S3: %s", s3_location)
+            result = s3_client.get_object(
+                Bucket=s3_location["Bucket"], Key=s3_location["Key"]
+            )
+            definition_str = to_str(result["Body"].read())
+        elif "Definition" in model:
+            definition = model.get("Definition")
+            definition_str = json.dumps(definition)
+        else:
+            definition_str = None
+
+        substitutions = model.get("DefinitionSubstitutions")
+        if substitutions is not None:
+            definition_str = _apply_substitutions(definition_str, substitutions)
+        return definition_str
+
+    def read(
+        self,
+        request: ResourceRequest[StepFunctionsStateMachineProperties],
+    ) -> ProgressEvent[StepFunctionsStateMachineProperties]:
+        """
+        Fetch resource information
+
+        IAM permissions required:
+          - states:DescribeStateMachine
+          - states:ListTagsForResource
+        """
+        raise NotImplementedError
+
+    def delete(
+        self,
+        request: ResourceRequest[StepFunctionsStateMachineProperties],
+    ) -> ProgressEvent[StepFunctionsStateMachineProperties]:
+        """
+        Delete a resource
+
+        IAM permissions required:
+          - states:DeleteStateMachine
+          - states:DescribeStateMachine
+        """
+        model = request.desired_state
+        step_function = request.aws_client_factory.stepfunctions
+
+        step_function.delete_state_machine(stateMachineArn=model["Arn"])
+
+        return ProgressEvent(
+            status=OperationStatus.SUCCESS,
+            resource_model=model,
+            custom_context=request.custom_context,
+        )
+
+    def update(
+        self,
+        request: ResourceRequest[StepFunctionsStateMachineProperties],
+    ) -> ProgressEvent[StepFunctionsStateMachineProperties]:
+        """
+        Update a resource
+
+        IAM permissions required:
+          - states:UpdateStateMachine
+          - states:TagResource
+          - states:UntagResource
+          - states:ListTagsForResource
+          - iam:PassRole
+        """
+        model = request.desired_state
+        step_function = request.aws_client_factory.stepfunctions
+
+        if not model.get("Arn"):
+            model["Arn"] = request.previous_state["Arn"]
+
+        params = {
+            "stateMachineArn": model["Arn"],
+            "definition": model["DefinitionString"],
+        }
+
+        step_function.update_state_machine(**params)
+
+        return ProgressEvent(
+            status=OperationStatus.SUCCESS,
+            resource_model=model,
+            custom_context=request.custom_context,
+        )
+
+
+def _apply_substitutions(definition: str, substitutions: Dict[str, str]) -> str:
+    substitution_regex = re.compile(
+        "\\${[a-zA-Z0-9_]+}"
+    )  # might be a bit too strict in some cases
+    tokens = substitution_regex.findall(definition)
+    result = definition
+    for token in tokens:
+        raw_token = token[2:-1]  # strip ${ and }
+        if raw_token not in substitutions.keys():
+            raise
+        result = result.replace(token, substitutions[raw_token])
+
+    return result
diff --git a/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_statemachine_plugin.py b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_statemachine_plugin.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/resource_providers/aws_stepfunctions_statemachine_plugin.py
@@ -0,0 +1,20 @@
+from typing import Optional, Type
+
+from localstack.services.cloudformation.resource_provider import (
+    CloudFormationResourceProviderPlugin,
+    ResourceProvider,
+)
+
+
+class StepFunctionsStateMachineProviderPlugin(CloudFormationResourceProviderPlugin):
+    name = "AWS::StepFunctions::StateMachine"
+
+    def __init__(self):
+        self.factory: Optional[Type[ResourceProvider]] = None
+
+    def load(self):
+        from localstack.services.stepfunctions.resource_providers.aws_stepfunctions_statemachine import (
+            StepFunctionsStateMachineProvider,
+        )
+
+        self.factory = StepFunctionsStateMachineProvider
diff --git a/moto/stepfunctions/parser/utils.py b/moto/stepfunctions/parser/utils.py
new file mode 100644
--- /dev/null
+++ b/moto/stepfunctions/parser/utils.py
@@ -0,0 +1,82 @@
+import re
+from typing import Dict, List, Set, Type
+
+TMP_THREADS = []
+
+
+def is_list_or_tuple(obj) -> bool:
+    return isinstance(obj, (list, tuple))
+
+
+def select_attributes(obj: Dict, attributes: List[str]) -> Dict:
+    """Select a subset of attributes from the given dict (returns a copy)"""
+    attributes = attributes if is_list_or_tuple(attributes) else [attributes]
+    return {k: v for k, v in obj.items() if k in attributes}
+
+
+class SubtypesInstanceManager:
+    """Simple instance manager base class that scans the subclasses of a base type for concrete named
+    implementations, and lazily creates and returns (singleton) instances on demand."""
+
+    _instances: Dict[str, "SubtypesInstanceManager"]
+
+    @classmethod
+    def get(cls, subtype_name: str):
+        instances = cls.instances()
+        base_type = cls.get_base_type()
+        instance = instances.get(subtype_name)
+        if instance is None:
+            # lazily load subtype instance (required if new plugins are dynamically loaded at runtime)
+            for clazz in get_all_subclasses(base_type):
+                impl_name = clazz.impl_name()
+                if impl_name not in instances:
+                    instances[impl_name] = clazz()
+            instance = instances.get(subtype_name)
+        return instance
+
+    @classmethod
+    def instances(cls) -> Dict[str, "SubtypesInstanceManager"]:
+        base_type = cls.get_base_type()
+        if not hasattr(base_type, "_instances"):
+            base_type._instances = {}
+        return base_type._instances
+
+    @staticmethod
+    def impl_name() -> str:
+        """Name of this concrete subtype - to be implemented by subclasses."""
+        raise NotImplementedError
+
+    @classmethod
+    def get_base_type(cls) -> Type:
+        """Get the base class for which instances are being managed - can be customized by subtypes."""
+        return cls
+
+
+def to_str(obj, encoding: str = "utf-8", errors="strict") -> str:
+    """If ``obj`` is an instance of ``binary_type``, return
+    ``obj.decode(encoding, errors)``, otherwise return ``obj``"""
+    return obj.decode(encoding, errors) if isinstance(obj, bytes) else obj
+
+
+_re_camel_to_snake_case = re.compile("((?<=[a-z0-9])[A-Z]|(?!^)[A-Z](?=[a-z]))")
+
+
+def camel_to_snake_case(string: str) -> str:
+    return _re_camel_to_snake_case.sub(r"_\1", string).replace("__", "_").lower()
+
+
+def snake_to_camel_case(string: str, capitalize_first: bool = True) -> str:
+    components = string.split("_")
+    start_idx = 0 if capitalize_first else 1
+    components = [x.title() for x in components[start_idx:]]
+    return "".join(components)
+
+
+def get_all_subclasses(clazz: Type) -> Set[Type]:
+    """Recursively get all subclasses of the given class."""
+    result = set()
+    subs = clazz.__subclasses__()
+    for sub in subs:
+        result.add(sub)
+        result.update(get_all_subclasses(sub))
+    return result
diff --git a/moto/stepfunctions/responses.py b/moto/stepfunctions/responses.py
--- a/moto/stepfunctions/responses.py
+++ b/moto/stepfunctions/responses.py
@@ -1,9 +1,11 @@
 import json
 
 from moto.core.common_types import TYPE_RESPONSE
+from moto.core.config import default_user_config
 from moto.core.responses import BaseResponse
 
 from .models import StepFunctionBackend, stepfunctions_backends
+from .parser.api import ExecutionStatus
 
 
 class StepFunctionResponse(BaseResponse):
@@ -12,7 +14,12 @@ def __init__(self) -> None:
 
     @property
     def stepfunction_backend(self) -> StepFunctionBackend:
-        return stepfunctions_backends[self.current_account][self.region]
+        if default_user_config.get("stepfunctions", {}).get("execute_state_machine", False):
+            from .parser.models import stepfunctions_parser_backends
+
+            return stepfunctions_parser_backends[self.current_account][self.region]
+        else:
+            return stepfunctions_backends[self.current_account][self.region]
 
     def create_state_machine(self) -> TYPE_RESPONSE:
         name = self._get_param("name")
@@ -146,19 +153,26 @@ def describe_execution(self) -> TYPE_RESPONSE:
         execution = self.stepfunction_backend.describe_execution(arn)
         response = {
             "executionArn": arn,
-            "input": execution.execution_input,
+            "input": json.dumps(execution.execution_input),
             "name": execution.name,
             "startDate": execution.start_date,
             "stateMachineArn": execution.state_machine_arn,
             "status": execution.status,
             "stopDate": execution.stop_date,
         }
+        if execution.status == ExecutionStatus.SUCCEEDED:
+            response["output"] = execution.output
+            response["outputDetails"] = execution.output_details
+        if execution.error is not None:
+            response["error"] = execution.error
+        if execution.cause is not None:
+            response["cause"] = execution.cause
         return 200, {}, json.dumps(response)
 
     def describe_state_machine_for_execution(self) -> TYPE_RESPONSE:
         arn = self._get_param("executionArn")
-        execution = self.stepfunction_backend.describe_execution(arn)
-        return self._describe_state_machine(execution.state_machine_arn)
+        sm = self.stepfunction_backend.describe_state_machine_for_execution(arn)
+        return self._describe_state_machine(sm.arn)
 
     def stop_execution(self) -> TYPE_RESPONSE:
         arn = self._get_param("executionArn")
@@ -173,3 +187,42 @@ def get_execution_history(self) -> TYPE_RESPONSE:
         )
         response = {"events": execution_history}
         return 200, {}, json.dumps(response)
+
+    def send_task_failure(self) -> TYPE_RESPONSE:
+        task_token = self._get_param("taskToken")
+        self.stepfunction_backend.send_task_failure(task_token)
+        return 200, {}, "{}"
+
+    def send_task_heartbeat(self) -> TYPE_RESPONSE:
+        task_token = self._get_param("taskToken")
+        self.stepfunction_backend.send_task_heartbeat(task_token)
+        return 200, {}, "{}"
+
+    def send_task_success(self) -> TYPE_RESPONSE:
+        task_token = self._get_param("taskToken")
+        outcome = self._get_param("outcome")
+        self.stepfunction_backend.send_task_success(task_token, outcome)
+        return 200, {}, "{}"
+
+    def list_map_runs(self) -> TYPE_RESPONSE:
+        execution_arn = self._get_param("executionArn")
+        runs = self.stepfunction_backend.list_map_runs(execution_arn)
+        return 200, {}, json.dumps(runs)
+
+    def describe_map_run(self) -> TYPE_RESPONSE:
+        map_run_arn = self._get_param("mapRunArn")
+        run = self.stepfunction_backend.describe_map_run(map_run_arn)
+        return 200, {}, json.dumps(run)
+
+    def update_map_run(self) -> TYPE_RESPONSE:
+        map_run_arn = self._get_param("mapRunArn")
+        max_concurrency = self._get_param("maxConcurrency")
+        tolerated_failure_count = self._get_param("toleratedFailureCount")
+        tolerated_failure_percentage = self._get_param("toleratedFailurePercentage")
+        self.stepfunction_backend.update_map_run(
+            map_run_arn,
+            max_concurrency,
+            tolerated_failure_count=tolerated_failure_count,
+            tolerated_failure_percentage=tolerated_failure_percentage,
+        )
+        return 200, {}, "{}"


Test patch:
diff --git a/.github/workflows/tests_servermode.yml b/.github/workflows/tests_servermode.yml
--- a/.github/workflows/tests_servermode.yml
+++ b/.github/workflows/tests_servermode.yml
@@ -59,10 +59,11 @@ jobs:
     - name: "Stop MotoServer"
       if: always()
       run: |
+        ls -la
+        docker stop motoserver
         mkdir serverlogs
         cp server_output.log serverlogs/server_output.log
-        docker stop motoserver
-    - name: Archive TF logs
+    - name: Archive Server logs
       if: always()
       uses: actions/upload-artifact@v4
       with:
diff --git a/tests/test_awslambda/utilities.py b/tests/test_awslambda/utilities.py
--- a/tests/test_awslambda/utilities.py
+++ b/tests/test_awslambda/utilities.py
@@ -25,6 +25,8 @@ def get_test_zip_file1():
     pfunc = """
 def lambda_handler(event, context):
     print("custom log event")
+    if "error" in event:
+        raise Exception('I failed!')
     return event
 """
     return _process_lambda(pfunc)
diff --git a/tests/test_stepfunctions/parser/__init__.py b/tests/test_stepfunctions/parser/__init__.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/__init__.py
@@ -0,0 +1,158 @@
+import json
+import os
+from functools import wraps
+from time import sleep
+from typing import TYPE_CHECKING, Callable, TypeVar
+from uuid import uuid4
+
+import boto3
+import requests
+
+from moto import mock_aws, settings
+from tests import DEFAULT_ACCOUNT_ID as ACCOUNT_ID
+from tests.test_stepfunctions.parser.templates.templates import load_template
+
+if TYPE_CHECKING:
+    from typing_extensions import ParamSpec
+
+    P = ParamSpec("P")
+
+T = TypeVar("T")
+
+
+def aws_verified(func):
+    """
+    Function that is verified to work against AWS.
+    Can be run against AWS at any time by setting:
+      MOTO_TEST_ALLOW_AWS_REQUEST=true
+
+    If this environment variable is not set, the function runs in a `mock_aws` context.
+    """
+
+    @wraps(func)
+    def pagination_wrapper():
+        allow_aws_request = (
+            os.environ.get("MOTO_TEST_ALLOW_AWS_REQUEST", "false").lower() == "true"
+        )
+
+        if allow_aws_request:
+            return func()
+        else:
+            with mock_aws():
+                requests.post(
+                    f"http://{base_url}/moto-api/config",
+                    json={"stepfunctions": {"execute_state_machine": True}},
+                )
+                resp = func()
+                requests.post(
+                    f"http://{base_url}/moto-api/config",
+                    json={"stepfunctions": {"execute_state_machine": False}},
+                )
+                return resp
+
+    return pagination_wrapper
+
+
+def verify_execution_result(
+    _verify_result, expected_status, tmpl_name, exec_input=None, sleep_time=0
+):
+    iam = boto3.client("iam", region_name="us-east-1")
+    role_name = f"sfn_role_{str(uuid4())[0:6]}"
+    sfn_role = iam.create_role(
+        RoleName=role_name,
+        AssumeRolePolicyDocument=json.dumps(sfn_role_policy),
+        Path="/",
+    )["Role"]["Arn"]
+    iam.put_role_policy(
+        PolicyDocument=json.dumps(sfn_allow_dynamodb),
+        PolicyName="allowLambdaInvoke",
+        RoleName=role_name,
+    )
+    sleep(sleep_time)
+
+    client = boto3.client("stepfunctions", region_name="us-east-1")
+    execution_arn, state_machine_arn = _start_execution(
+        client, load_template(tmpl_name), exec_input, sfn_role
+    )
+    for _ in range(10):
+        execution = client.describe_execution(executionArn=execution_arn)
+        if execution["status"] == expected_status:
+            result = _verify_result(client, execution, execution_arn)
+            if result is not False:
+
+                client.delete_state_machine(stateMachineArn=state_machine_arn)
+                iam.delete_role_policy(
+                    RoleName=role_name, PolicyName="allowLambdaInvoke"
+                )
+                iam.delete_role(RoleName=role_name)
+                break
+        sleep(0.1)
+    else:
+        client.delete_state_machine(stateMachineArn=state_machine_arn)
+        iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
+        iam.delete_role(RoleName=role_name)
+        assert False, "Should have failed already"
+
+
+def _start_execution(client, definition, exec_input, sfn_role):
+    name = "sfn_name"
+    #
+    response = client.create_state_machine(
+        name=name, definition=json.dumps(definition), roleArn=sfn_role
+    )
+    state_machine_arn = response["stateMachineArn"]
+    execution = client.start_execution(
+        name="exec1", stateMachineArn=state_machine_arn, input=exec_input or "{}"
+    )
+    execution_arn = execution["executionArn"]
+    return execution_arn, state_machine_arn
+
+
+def _get_default_role():
+    return "arn:aws:iam::" + ACCOUNT_ID + ":role/unknown_sf_role"
+
+
+base_url = "localhost:5000" if settings.TEST_SERVER_MODE else "motoapi.amazonaws.com"
+
+
+def enable_sfn_parser(func: "Callable[P, T]") -> "Callable[P, T]":
+    @wraps(func)
+    def pagination_wrapper(*args: "P.args", **kwargs: "P.kwargs") -> T:  # type: ignore
+        requests.post(
+            f"http://{base_url}/moto-api/config",
+            json={"stepfunctions": {"execute_state_machine": True}},
+        )
+        try:
+            res = func(*args, **kwargs)
+        finally:
+            requests.post(
+                f"http://{base_url}/moto-api/config",
+                json={"stepfunctions": {"execute_state_machine": False}},
+            )
+        return res
+
+    return pagination_wrapper
+
+
+sfn_role_policy = {
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Effect": "Allow",
+            "Principal": {"Service": "states.amazonaws.com"},
+            "Action": "sts:AssumeRole",
+        }
+    ],
+}
+
+sfn_allow_lambda_invoke = {
+    "Version": "2012-10-17",
+    "Statement": [
+        {"Effect": "Allow", "Action": ["lambda:InvokeFunction"], "Resource": ["*"]}
+    ],
+}
+
+sfn_allow_dynamodb = {
+    "Version": "2012-10-17",
+    "Statement": [{"Effect": "Allow", "Action": ["dynamodb:*"], "Resource": ["*"]}],
+}
diff --git a/tests/test_stepfunctions/parser/templates/__init__.py b/tests/test_stepfunctions/parser/templates/__init__.py
new file mode 100644
diff --git a/tests/test_stepfunctions/parser/templates/choice_state_singleton.json b/tests/test_stepfunctions/parser/templates/choice_state_singleton.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/choice_state_singleton.json
@@ -0,0 +1,28 @@
+{
+  "StartAt": "ChoiceStateX",
+  "States": {
+    "ChoiceStateX": {
+      "Type": "Choice",
+      "Choices": [
+        {
+          "And": [
+            {
+              "Variable": "$.type",
+              "StringEquals": "Public"
+            }
+          ],
+          "Next": "Public"
+        }
+      ],
+      "Default": "DefaultState"
+    },
+    "Public": {
+      "Type": "Pass",
+      "End": true
+    },
+    "DefaultState": {
+      "Type": "Fail",
+      "Cause": "No Matches!"
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/map_item_reader.json b/tests/test_stepfunctions/parser/templates/map_item_reader.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/map_item_reader.json
@@ -0,0 +1,36 @@
+{
+  "Comment": "MAP_ITEM_READER_BASE_CSV_HEADERS_DECL",
+  "StartAt": "MapState",
+  "States": {
+    "MapState": {
+      "Type": "Map",
+      "MaxConcurrency": 1,
+      "ItemReader": {
+        "ReaderConfig": {
+          "InputType": "CSV",
+          "CSVHeaderLocation": "GIVEN",
+          "CSVHeaders": ["H1", "H2", "H3"]
+        },
+        "Resource": "arn:aws:states:::s3:getObject",
+        "Parameters": {
+          "Bucket.$": "$.Bucket",
+          "Key.$": "$.Key"
+        }
+      },
+      "ItemProcessor": {
+        "ProcessorConfig": {
+          "Mode": "DISTRIBUTED",
+          "ExecutionType": "STANDARD"
+        },
+        "StartAt": "PassItem",
+        "States": {
+          "PassItem": {
+            "Type": "Pass",
+            "End": true
+          }
+        }
+      },
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/map_item_reader_with_header.json b/tests/test_stepfunctions/parser/templates/map_item_reader_with_header.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/map_item_reader_with_header.json
@@ -0,0 +1,35 @@
+{
+  "Comment": "MAP_ITEM_READER_BASE_CSV_HEADERS_FIRST_LINE",
+  "StartAt": "MapState",
+  "States": {
+    "MapState": {
+      "Type": "Map",
+      "MaxConcurrency": 1,
+      "ItemReader": {
+        "ReaderConfig": {
+          "InputType": "CSV",
+          "CSVHeaderLocation": "FIRST_ROW"
+        },
+        "Resource": "arn:aws:states:::s3:getObject",
+        "Parameters": {
+          "Bucket.$": "$.Bucket",
+          "Key.$": "$.Key"
+        }
+      },
+      "ItemProcessor": {
+        "ProcessorConfig": {
+          "Mode": "DISTRIBUTED",
+          "ExecutionType": "STANDARD"
+        },
+        "StartAt": "PassItem",
+        "States": {
+          "PassItem": {
+            "Type": "Pass",
+            "End": true
+          }
+        }
+      },
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/parallel_fail.json b/tests/test_stepfunctions/parser/templates/parallel_fail.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/parallel_fail.json
@@ -0,0 +1,21 @@
+{
+  "Comment": "PARALLEL_STATE_FAIL",
+  "StartAt": "ParallelState",
+  "States": {
+    "ParallelState": {
+      "Type": "Parallel",
+      "End": true,
+      "Branches": [
+        {
+          "StartAt": "Branch1",
+          "States": {
+            "Branch1": {
+              "Type": "Fail",
+              "Error": "FailureType"
+            }
+          }
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/parallel_states.json b/tests/test_stepfunctions/parser/templates/parallel_states.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/parallel_states.json
@@ -0,0 +1,56 @@
+{
+  "Comment": "PARALLEL_STATE",
+  "StartAt": "LoadInput",
+  "States": {
+    "LoadInput": {
+      "Type": "Pass",
+      "Result": [1, 2, 3, 4],
+      "Next": "ParallelState"
+    },
+    "ParallelState": {
+      "Type": "Parallel",
+      "End": true,
+      "Branches": [
+        {
+          "StartAt": "Branch1",
+          "States": {
+            "Branch1": {
+              "Type": "Pass",
+              "End": true
+            }
+          }
+        },
+        {
+          "StartAt": "Branch21",
+          "States": {
+            "Branch21": {
+              "Type": "Pass",
+              "Next": "Branch22"
+            },
+            "Branch22": {
+              "Type": "Pass",
+              "End": true
+            }
+          }
+        },
+        {
+          "StartAt": "Branch31",
+          "States": {
+            "Branch31": {
+              "Type": "Pass",
+              "Next": "Branch32"
+            },
+            "Branch32": {
+              "Type": "Pass",
+              "Next": "Branch33"
+            },
+            "Branch33": {
+              "Type": "Pass",
+              "End": true
+            }
+          }
+        }
+      ]
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/parallel_states_catch.json b/tests/test_stepfunctions/parser/templates/parallel_states_catch.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/parallel_states_catch.json
@@ -0,0 +1,38 @@
+{
+  "Comment": "PARALLEL_STATE_CATCH",
+  "StartAt": "ParallelState",
+  "States": {
+    "ParallelState": {
+      "Type": "Parallel",
+      "Branches": [
+        {
+          "StartAt": "Branch1",
+          "States": {
+            "Branch1": {
+              "Type": "Fail",
+              "Error": "FailureType",
+              "Cause": "Cause description"
+            }
+          }
+        }
+      ],
+      "Catch": [
+        {
+          "ErrorEquals": [
+            "FailureType"
+          ],
+          "Next": "FinalCaught"
+        }
+      ],
+      "Next": "Final"
+    },
+    "FinalCaught": {
+      "Type": "Pass",
+      "End": true
+    },
+    "Final": {
+      "Type": "Pass",
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/parallel_states_order.json b/tests/test_stepfunctions/parser/templates/parallel_states_order.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/parallel_states_order.json
@@ -0,0 +1,60 @@
+{
+  "Comment": "PARALLEL_STATE_ORDER",
+  "StartAt": "StartState",
+  "States": {
+    "StartState": {
+      "Type": "Parallel",
+      "Branches": [
+        {
+          "StartAt": "Branch0",
+          "States": {
+            "Branch0": {
+              "Type": "Pass",
+              "Result": {
+                "branch": 0
+              },
+              "End": true
+            }
+          }
+        },
+        {
+          "StartAt": "Branch1",
+          "States": {
+            "Branch1": {
+              "Type": "Pass",
+              "Result": {
+                "branch": 1
+              },
+              "End": true
+            }
+          }
+        },
+        {
+          "StartAt": "Branch2",
+          "States": {
+            "Branch2": {
+              "Type": "Pass",
+              "Result": {
+                "branch": 2
+              },
+              "End": true
+            }
+          }
+        },
+        {
+          "StartAt": "Branch3",
+          "States": {
+            "Branch3": {
+              "Type": "Pass",
+              "Result": {
+                "branch": 3
+              },
+              "End": true
+            }
+          }
+        }
+      ],
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/services/dynamodb_put_delete_item.json b/tests/test_stepfunctions/parser/templates/services/dynamodb_put_delete_item.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/services/dynamodb_put_delete_item.json
@@ -0,0 +1,36 @@
+{
+  "Comment": "AWS_SDK_DYNAMODB_PUT_DELETE_ITEM",
+  "StartAt": "PutItem1",
+  "States": {
+    "PutItem1": {
+      "Type": "Task",
+      "Resource": "arn:aws:states:::aws-sdk:dynamodb:putItem",
+      "Parameters": {
+        "TableName.$": "$.TableName",
+        "Item.$": "$.Item1"
+      },
+      "ResultPath": "$.putItemOutput1",
+      "Next": "PutItem2"
+    },
+    "PutItem2": {
+      "Type": "Task",
+      "Resource": "arn:aws:states:::aws-sdk:dynamodb:putItem",
+      "Parameters": {
+        "TableName.$": "$.TableName",
+        "Item.$": "$.Item2"
+      },
+      "ResultPath": "$.putItemOutput2",
+      "Next": "DeleteItem"
+    },
+    "DeleteItem": {
+      "Type": "Task",
+      "Resource": "arn:aws:states:::aws-sdk:dynamodb:deleteItem",
+      "ResultPath": "$.deleteItemOutput",
+      "Parameters": {
+        "TableName.$": "$.TableName",
+        "Key.$": "$.Key"
+      },
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/services/dynamodb_put_item.json b/tests/test_stepfunctions/parser/templates/services/dynamodb_put_item.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/services/dynamodb_put_item.json
@@ -0,0 +1,16 @@
+{
+  "Comment": "AWS_SDK_DYNAMODB_PUT_ITEM",
+  "StartAt": "PutItem",
+  "States": {
+    "PutItem": {
+      "Type": "Task",
+      "Resource": "arn:aws:states:::aws-sdk:dynamodb:putItem",
+      "Parameters": {
+        "TableName.$": "$.TableName",
+        "Item.$": "$.Item"
+      },
+      "ResultPath": "$.putItemOutput",
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/services/sns_publish.json b/tests/test_stepfunctions/parser/templates/services/sns_publish.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/services/sns_publish.json
@@ -0,0 +1,15 @@
+{
+  "Comment": "SNS_PUBLISH",
+  "StartAt": "Publish",
+  "States": {
+    "Publish": {
+      "Type": "Task",
+      "Resource": "arn:aws:states:::sns:publish",
+      "Parameters": {
+        "TopicArn.$": "$.TopicArn",
+        "Message.$": "$.Message"
+      },
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/services/sqs_heartbeat.json b/tests/test_stepfunctions/parser/templates/services/sqs_heartbeat.json
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/services/sqs_heartbeat.json
@@ -0,0 +1,20 @@
+{
+  "Comment": "SERVICE_SQS_SEND_AND_WAIT_FOR_TASK_TOKEN_WITH_HEARTBEAT",
+  "StartAt": "SendMessageWithWait",
+  "States": {
+    "SendMessageWithWait": {
+      "Type": "Task",
+      "Resource": "arn:aws:states:::sqs:sendMessage.waitForTaskToken",
+      "TimeoutSeconds": 60,
+      "HeartbeatSeconds": 5,
+      "Parameters": {
+        "QueueUrl.$": "$.QueueUrl",
+        "MessageBody": {
+          "Message.$": "$.Message",
+          "TaskToken.$": "$$.Task.Token"
+        }
+      },
+      "End": true
+    }
+  }
+}
\ No newline at end of file
diff --git a/tests/test_stepfunctions/parser/templates/templates.py b/tests/test_stepfunctions/parser/templates/templates.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/templates/templates.py
@@ -0,0 +1,11 @@
+import json
+import os
+
+folder = os.path.dirname(os.path.realpath(__file__))
+
+
+def load_template(name: str):
+    template = None
+    with open(os.path.join(folder, name + ".json"), "r") as df:
+        template = json.load(df)
+    return template
diff --git a/tests/test_stepfunctions/parser/test_choice_state.py b/tests/test_stepfunctions/parser/test_choice_state.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_choice_state.py
@@ -0,0 +1,36 @@
+import json
+from unittest import SkipTest
+
+from moto import mock_aws, settings
+
+from . import aws_verified, verify_execution_result
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_choice():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+    tmpl_name = "choice_state_singleton"
+    exec_input = {"type": "Public"}
+
+    def _verify_result(client, execution, execution_arn):
+        assert json.loads(execution["input"]) == exec_input
+
+    verify_execution_result(
+        _verify_result, "SUCCEEDED", tmpl_name, exec_input=json.dumps(exec_input)
+    )
+
+
+@aws_verified
+def test_state_machine_with_choice_miss():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+    tmpl_name = "choice_state_singleton"
+    exec_input = {"type": "Private"}
+
+    def _verify_result(client, execution, execution_arn):
+        assert execution["cause"] == "No Matches!"
+
+    verify_execution_result(
+        _verify_result, "FAILED", tmpl_name, exec_input=json.dumps(exec_input)
+    )
diff --git a/tests/test_stepfunctions/parser/test_map_item.py b/tests/test_stepfunctions/parser/test_map_item.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_map_item.py
@@ -0,0 +1,88 @@
+import json
+from unittest import SkipTest
+
+import boto3
+
+from moto import mock_aws, settings
+
+from . import verify_execution_result
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_map_reader_csv():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+
+    # Prepare CSV
+    s3 = boto3.client("s3", "us-east-1")
+    bucket_name = "mybucket"
+    s3.create_bucket(Bucket=bucket_name)
+    key = "file.csv"
+    csv_file = (
+        "Value1,Value2,Value3\n"
+        "Value4,Value5,Value6\n"
+        ",,,\n"
+        "true,1,'HelloWorld'\n"
+        "Null,None,\n"
+        "   \n"
+    )
+    s3.put_object(Bucket=bucket_name, Key=key, Body=csv_file)
+
+    tmpl_name = "map_item_reader"
+    exec_input = {"Bucket": bucket_name, "Key": key}
+
+    def _verify_result(client, execution, execution_arn):
+        output = json.loads(execution["output"])
+        assert {"H1": "Value1", "H2": "Value2", "H3": "Value3"} in output
+        assert {"H1": "Value4", "H2": "Value5", "H3": "Value6"} in output
+        assert {"H1": "", "H2": "", "H3": ""} in output
+        assert {"H1": "true", "H2": "1", "H3": "'HelloWorld'"} in output
+        assert {"H1": "Null", "H2": "None", "H3": ""} in output
+        assert {"H1": "   ", "H2": "", "H3": ""} in output
+
+    verify_execution_result(
+        _verify_result, "SUCCEEDED", tmpl_name, exec_input=json.dumps(exec_input)
+    )
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_map_reader_csv_with_header():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+
+    # Prepare CSV
+    s3 = boto3.client("s3", "us-east-1")
+    bucket_name = "mybucket"
+    s3.create_bucket(Bucket=bucket_name)
+    key = "file.csv"
+    csv_file = (
+        "Col1,Col2,Col3\n"
+        "Value1,Value2,Value3\n"
+        "Value4,Value5,Value6\n"
+        ",,,\n"
+        "true,1,'HelloWorld'\n"
+        "Null,None,\n"
+        "   \n"
+    )
+    s3.put_object(Bucket=bucket_name, Key=key, Body=csv_file)
+
+    tmpl_name = "map_item_reader_with_header"
+    exec_input = {"Bucket": bucket_name, "Key": key}
+
+    def _verify_result(client, execution, execution_arn):
+        output = json.loads(execution["output"])
+        assert {"Col1": "Value1", "Col2": "Value2", "Col3": "Value3"} in output
+        assert {"Col1": "", "Col2": "", "Col3": ""} in output
+
+        runs = client.list_map_runs(executionArn=execution_arn)["mapRuns"]
+        assert len(runs) == 1
+        assert runs[0]["executionArn"] == execution_arn
+
+        run = client.describe_map_run(mapRunArn=runs[0]["mapRunArn"])
+        assert run["itemCounts"]["total"] == 6
+
+        client.update_map_run(mapRunArn=runs[0]["mapRunArn"], maxConcurrency=4)
+
+    verify_execution_result(
+        _verify_result, "SUCCEEDED", tmpl_name, exec_input=json.dumps(exec_input)
+    )
diff --git a/tests/test_stepfunctions/parser/test_parallel_states.py b/tests/test_stepfunctions/parser/test_parallel_states.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_parallel_states.py
@@ -0,0 +1,72 @@
+import json
+from unittest import SkipTest
+
+from moto import mock_aws, settings
+
+from . import verify_execution_result
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_parallel_states():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+    tmpl_name = "parallel_states"
+
+    def _verify_result(client, execution, execution_arn):
+        assert "stopDate" in execution
+        assert execution["output"] == "[[1,2,3,4],[1,2,3,4],[1,2,3,4]]"
+
+        history = client.get_execution_history(executionArn=execution_arn)
+        assert len(history["events"]) == 20
+        assert "ParallelStateEntered" in [e["type"] for e in history["events"]]
+        assert "ParallelStateStarted" in [e["type"] for e in history["events"]]
+        assert "PassStateExited" in [e["type"] for e in history["events"]]
+
+    verify_execution_result(_verify_result, "SUCCEEDED", tmpl_name)
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_parallel_states_catch_error():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+    expected_status = "SUCCEEDED"
+    tmpl_name = "parallel_states_catch"
+
+    def _verify_result(client, execution, execution_arn):
+        assert "stopDate" in execution
+        assert json.loads(execution["output"])["Cause"] == "Cause description"
+        history = client.get_execution_history(executionArn=execution_arn)
+        assert len(history["events"]) == 9
+        assert "ParallelStateEntered" in [e["type"] for e in history["events"]]
+        assert "ParallelStateStarted" in [e["type"] for e in history["events"]]
+        assert "ParallelStateFailed" in [e["type"] for e in history["events"]]
+
+    verify_execution_result(_verify_result, expected_status, tmpl_name)
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_parallel_states_error():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+
+    def _verify_result(client, execution, execution_arn):
+        assert "stopDate" in execution
+        assert execution["error"] == "FailureType"
+
+    verify_execution_result(_verify_result, "FAILED", "parallel_fail")
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_parallel_states_order():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+
+    def _verify_result(client, execution, execution_arn):
+        assert json.loads(execution["output"]) == [
+            {"branch": 0},
+            {"branch": 1},
+            {"branch": 2},
+            {"branch": 3},
+        ]
+
+    verify_execution_result(_verify_result, "SUCCEEDED", "parallel_states_order")
diff --git a/tests/test_stepfunctions/parser/test_stepfunctions.py b/tests/test_stepfunctions/parser/test_stepfunctions.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_stepfunctions.py
@@ -0,0 +1,72 @@
+import json
+from time import sleep
+from unittest import SkipTest
+
+import boto3
+
+from moto import mock_aws, settings
+from tests import DEFAULT_ACCOUNT_ID as ACCOUNT_ID
+
+failure_definition = {
+    "Comment": "An example of the Amazon States Language using a choice state.",
+    "StartAt": "DefaultState",
+    "States": {
+        "DefaultState": {
+            "Type": "Fail",
+            "Error": "DefaultStateError",
+            "Cause": "No Matches!",
+        }
+    },
+}
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_with_simple_failure_state():
+    if settings.TEST_SERVER_MODE:
+        raise SkipTest("Don't need to test this in ServerMode")
+    client = boto3.client("stepfunctions", region_name="us-east-1")
+    execution_arn, state_machine_arn = _start_execution(client, failure_definition)
+
+    for _ in range(5):
+        execution = client.describe_execution(executionArn=execution_arn)
+        if execution["status"] == "FAILED":
+            assert "stopDate" in execution
+            assert execution["error"] == "DefaultStateError"
+            assert execution["cause"] == "No Matches!"
+
+            history = client.get_execution_history(executionArn=execution_arn)
+            assert len(history["events"]) == 3
+            assert [e["type"] for e in history["events"]] == [
+                "ExecutionStarted",
+                "FailStateEntered",
+                "ExecutionFailed",
+            ]
+
+            executions = client.list_executions(stateMachineArn=state_machine_arn)[
+                "executions"
+            ]
+            assert len(executions) == 1
+            assert executions[0]["executionArn"] == execution_arn
+            assert executions[0]["stateMachineArn"] == state_machine_arn
+            assert executions[0]["status"] == "FAILED"
+
+            break
+        sleep(0.2)
+    else:
+        assert False, "Should have failed already"
+
+
+def _start_execution(client, definition):
+    name = "sfn_name"
+    #
+    response = client.create_state_machine(
+        name=name, definition=json.dumps(definition), roleArn=_get_default_role()
+    )
+    state_machine_arn = response["stateMachineArn"]
+    execution = client.start_execution(name="exec1", stateMachineArn=state_machine_arn)
+    execution_arn = execution["executionArn"]
+    return execution_arn, state_machine_arn
+
+
+def _get_default_role():
+    return "arn:aws:iam::" + ACCOUNT_ID + ":role/unknown_sf_role"
diff --git a/tests/test_stepfunctions/parser/test_stepfunctions_dynamodb_integration.py b/tests/test_stepfunctions/parser/test_stepfunctions_dynamodb_integration.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_stepfunctions_dynamodb_integration.py
@@ -0,0 +1,130 @@
+import json
+import os
+from functools import wraps
+from uuid import uuid4
+
+import boto3
+import pytest
+import requests
+
+from moto import mock_aws
+
+from . import base_url, verify_execution_result
+
+
+def aws_verified(func):
+    """
+    Function that is verified to work against AWS.
+    Can be run against AWS at any time by setting:
+      MOTO_TEST_ALLOW_AWS_REQUEST=true
+
+    If this environment variable is not set, the function runs in a `mock_aws` context.
+
+    This decorator will:
+      - Create an IAM-role that can be used by AWSLambda functions table
+      - Run the test
+      - Delete the role
+    """
+
+    @wraps(func)
+    def pagination_wrapper():
+        table_name = "table_" + str(uuid4())[0:6]
+
+        allow_aws_request = (
+            os.environ.get("MOTO_TEST_ALLOW_AWS_REQUEST", "false").lower() == "true"
+        )
+
+        if allow_aws_request:
+            return create_table_and_test(table_name, sleep_time=10)
+        else:
+            with mock_aws():
+                requests.post(
+                    f"http://{base_url}/moto-api/config",
+                    json={"stepfunctions": {"execute_state_machine": True}},
+                )
+                resp = create_table_and_test(table_name, sleep_time=0)
+                requests.post(
+                    f"http://{base_url}/moto-api/config",
+                    json={"stepfunctions": {"execute_state_machine": False}},
+                )
+                return resp
+
+    def create_table_and_test(table_name, sleep_time):
+        client = boto3.client("dynamodb", region_name="us-east-1")
+
+        client.create_table(
+            TableName=table_name,
+            KeySchema=[{"AttributeName": "id", "KeyType": "HASH"}],
+            AttributeDefinitions=[{"AttributeName": "id", "AttributeType": "S"}],
+            ProvisionedThroughput={"ReadCapacityUnits": 1, "WriteCapacityUnits": 5},
+            Tags=[{"Key": "environment", "Value": "moto_tests"}],
+        )
+        waiter = client.get_waiter("table_exists")
+        waiter.wait(TableName=table_name)
+        try:
+            resp = func(table_name, sleep_time)
+        finally:
+            ### CLEANUP ###
+            client.delete_table(TableName=table_name)
+
+        return resp
+
+    return pagination_wrapper
+
+
+@aws_verified
+@pytest.mark.aws_verified
+def test_state_machine_calling_dynamodb_put(table_name=None, sleep_time=0):
+    dynamodb = boto3.client("dynamodb", "us-east-1")
+    exec_input = {
+        "TableName": table_name,
+        "Item": {"data": {"S": "HelloWorld"}, "id": {"S": "id1"}},
+    }
+
+    expected_status = "SUCCEEDED"
+    tmpl_name = "services/dynamodb_put_item"
+
+    def _verify_result(client, execution, execution_arn):
+        assert "stopDate" in execution
+        assert json.loads(execution["input"]) == exec_input
+
+        items = dynamodb.scan(TableName=table_name)["Items"]
+        assert items == [exec_input["Item"]]
+
+    verify_execution_result(
+        _verify_result,
+        expected_status,
+        tmpl_name,
+        exec_input=json.dumps(exec_input),
+        sleep_time=sleep_time,
+    )
+
+
+@aws_verified
+@pytest.mark.aws_verified
+def test_state_machine_calling_dynamodb_put_and_delete(table_name=None, sleep_time=0):
+    dynamodb = boto3.client("dynamodb", "us-east-1")
+    exec_input = {
+        "TableName": table_name,
+        "Item1": {"data": {"S": "HelloWorld"}, "id": {"S": "id1"}},
+        "Item2": {"data": {"S": "HelloWorld"}, "id": {"S": "id2"}},
+        "Key": {"id": {"S": "id1"}},
+    }
+
+    expected_status = "SUCCEEDED"
+    tmpl_name = "services/dynamodb_put_delete_item"
+
+    def _verify_result(client, execution, execution_arn):
+        assert "stopDate" in execution
+        assert json.loads(execution["input"]) == exec_input
+
+        items = dynamodb.scan(TableName=table_name)["Items"]
+        assert items == [exec_input["Item2"]]
+
+    verify_execution_result(
+        _verify_result,
+        expected_status,
+        tmpl_name,
+        exec_input=json.dumps(exec_input),
+        sleep_time=sleep_time,
+    )
diff --git a/tests/test_stepfunctions/parser/test_stepfunctions_lambda_integration.py b/tests/test_stepfunctions/parser/test_stepfunctions_lambda_integration.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_stepfunctions_lambda_integration.py
@@ -0,0 +1,265 @@
+import json
+import os
+from functools import wraps
+from time import sleep
+from uuid import uuid4
+
+import boto3
+import pytest
+import requests
+from botocore.exceptions import ClientError
+
+from moto import mock_aws
+from tests.test_awslambda.utilities import (
+    get_test_zip_file1,
+)
+
+from . import base_url, sfn_allow_lambda_invoke, sfn_role_policy
+
+lambda_state_machine = {
+    "Comment": "A simple AWS Step Functions state machine that calls two Lambda Functions",
+    "StartAt": "Open Case",
+    "States": {
+        "Open Case": {"Type": "Task", "Resource": "TODO", "Next": "Send Email"},
+        "Send Email": {"Type": "Task", "Resource": "TODO", "End": True},
+    },
+}
+
+
+def aws_verified(func):
+    """
+    Function that is verified to work against AWS.
+    Can be run against AWS at any time by setting:
+      MOTO_TEST_ALLOW_AWS_REQUEST=true
+
+    If this environment variable is not set, the function runs in a `mock_aws` context.
+
+    This decorator will:
+      - Create an IAM-role that can be used by AWSLambda functions table
+      - Run the test
+      - Delete the role
+    """
+
+    @wraps(func)
+    def pagination_wrapper():
+        role_name = "moto_test_role_" + str(uuid4())[0:6]
+
+        allow_aws_request = (
+            os.environ.get("MOTO_TEST_ALLOW_AWS_REQUEST", "false").lower() == "true"
+        )
+
+        if allow_aws_request:
+            return create_role_and_test(role_name, sleep_time=10)
+        else:
+            with mock_aws():
+                requests.post(
+                    f"http://{base_url}/moto-api/config",
+                    json={"stepfunctions": {"execute_state_machine": True}},
+                )
+                resp = create_role_and_test(role_name, sleep_time=0)
+                requests.post(
+                    f"http://{base_url}/moto-api/config",
+                    json={"stepfunctions": {"execute_state_machine": False}},
+                )
+                return resp
+
+    def create_role_and_test(role_name, sleep_time):
+        policy_doc = {
+            "Version": "2012-10-17",
+            "Statement": [
+                {
+                    "Sid": "LambdaAssumeRole",
+                    "Effect": "Allow",
+                    "Principal": {"Service": "lambda.amazonaws.com"},
+                    "Action": "sts:AssumeRole",
+                }
+            ],
+        }
+        iam = boto3.client("iam", region_name="us-east-1")
+        iam_role_arn = iam.create_role(
+            RoleName=role_name,
+            AssumeRolePolicyDocument=json.dumps(policy_doc),
+            Path="/",
+        )["Role"]["Arn"]
+
+        fn_name = f"fn_for_{role_name}"
+        try:
+            fn_arn = create_function(iam_role_arn, role_name, fn_name)
+
+            resp = func(fn_name, fn_arn, sleep_time)
+        finally:
+            _lambda = boto3.client("lambda", "us-east-1")
+            _lambda.delete_function(FunctionName=fn_name)
+
+            iam.delete_role(RoleName=role_name)
+
+        return resp
+
+    def create_function(role_arn: str, role_name: str, fn_name: str):
+        iam = boto3.client("iam", region_name="us-east-1")
+
+        # The waiter is normally used to wait until a resource is ready
+        wait_for_role = iam.get_waiter("role_exists")
+        wait_for_role.wait(RoleName=role_name)
+
+        # HOWEVER:
+        # Just because the role exists, doesn't mean it can be used by Lambda
+        # The only reliable way to check if our role is ready:
+        #   - try to create a function and see if it succeeds
+        #
+        # The alternative is to wait between 5 and 10 seconds, which is not a great solution either
+        _lambda = boto3.client("lambda", "us-east-1")
+        for _ in range(15):
+            try:
+                fn = _lambda.create_function(
+                    FunctionName=fn_name,
+                    Runtime="python3.11",
+                    Role=role_arn,
+                    Handler="lambda_function.lambda_handler",
+                    Code={"ZipFile": get_test_zip_file1()},
+                )
+                return fn["FunctionArn"]
+
+            except ClientError:
+                sleep(1)
+        raise Exception(
+            f"Couldn't create test Lambda FN using IAM role {role_name}, probably because it wasn't ready in time"
+        )
+
+    return pagination_wrapper
+
+
+@aws_verified
+@pytest.mark.aws_verified
+def test_state_machine_calling_lambda_fn(fn_name=None, fn_arn=None, sleep_time=0):
+    definition = lambda_state_machine.copy()
+    definition["States"]["Open Case"]["Resource"] = fn_arn
+    definition["States"]["Send Email"]["Resource"] = fn_arn
+
+    iam = boto3.client("iam", region_name="us-east-1")
+    role_name = f"sfn_role_{str(uuid4())[0:6]}"
+    sfn_role = iam.create_role(
+        RoleName=role_name,
+        AssumeRolePolicyDocument=json.dumps(sfn_role_policy),
+        Path="/",
+    )["Role"]["Arn"]
+    iam.put_role_policy(
+        PolicyDocument=json.dumps(sfn_allow_lambda_invoke),
+        PolicyName="allowLambdaInvoke",
+        RoleName=role_name,
+    )
+    sleep(sleep_time)
+
+    client = boto3.client("stepfunctions", region_name="us-east-1")
+    name = "sfn_" + str(uuid4())[0:6]
+    exec_input = {"my": "input"}
+    #
+    response = client.create_state_machine(
+        name=name, definition=json.dumps(definition), roleArn=sfn_role
+    )
+    state_machine_arn = response["stateMachineArn"]
+
+    execution = client.start_execution(
+        name="exec1", stateMachineArn=state_machine_arn, input=json.dumps(exec_input)
+    )
+    execution_arn = execution["executionArn"]
+
+    for _ in range(10):
+        execution = client.describe_execution(executionArn=execution_arn)
+        if execution["status"] == "SUCCEEDED":
+            assert "stopDate" in execution
+            assert json.loads(execution["input"]) == exec_input
+            assert json.loads(execution["output"]) == exec_input
+
+            history = client.get_execution_history(executionArn=execution_arn)
+            assert len(history["events"]) == 12
+            assert [e["type"] for e in history["events"]] == [
+                "ExecutionStarted",
+                "TaskStateEntered",
+                "LambdaFunctionScheduled",
+                "LambdaFunctionStarted",
+                "LambdaFunctionSucceeded",
+                "TaskStateExited",
+                "TaskStateEntered",
+                "LambdaFunctionScheduled",
+                "LambdaFunctionStarted",
+                "LambdaFunctionSucceeded",
+                "TaskStateExited",
+                "ExecutionSucceeded",
+            ]
+
+            client.delete_state_machine(stateMachineArn=state_machine_arn)
+            iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
+            iam.delete_role(RoleName=role_name)
+            break
+        sleep(1)
+    else:
+        client.delete_state_machine(stateMachineArn=state_machine_arn)
+        iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
+        iam.delete_role(RoleName=role_name)
+        assert False, "Should have failed already"
+
+
+@aws_verified
+@pytest.mark.aws_verified
+def test_state_machine_calling_failing_lambda_fn(
+    fn_name=None, fn_arn=None, sleep_time=0
+):
+    definition = lambda_state_machine.copy()
+    definition["States"]["Open Case"]["Resource"] = fn_arn
+    definition["States"]["Send Email"]["Resource"] = fn_arn
+
+    iam = boto3.client("iam", region_name="us-east-1")
+    role_name = f"sfn_role_{str(uuid4())[0:6]}"
+    sfn_role = iam.create_role(
+        RoleName=role_name,
+        AssumeRolePolicyDocument=json.dumps(sfn_role_policy),
+        Path="/",
+    )["Role"]["Arn"]
+    iam.put_role_policy(
+        PolicyDocument=json.dumps(sfn_allow_lambda_invoke),
+        PolicyName="allowLambdaInvoke",
+        RoleName=role_name,
+    )
+    sleep(sleep_time)
+
+    client = boto3.client("stepfunctions", region_name="us-east-1")
+    name = "sfn_" + str(uuid4())[0:6]
+    exec_input = {"my": "input", "error": True}
+    #
+    response = client.create_state_machine(
+        name=name, definition=json.dumps(definition), roleArn=sfn_role
+    )
+    state_machine_arn = response["stateMachineArn"]
+
+    execution = client.start_execution(
+        name="exec1", stateMachineArn=state_machine_arn, input=json.dumps(exec_input)
+    )
+    execution_arn = execution["executionArn"]
+
+    for _ in range(10):
+        execution = client.describe_execution(executionArn=execution_arn)
+        if execution["status"] == "FAILED":
+            assert json.loads(execution["cause"])["errorMessage"] == "I failed!"
+
+            history = client.get_execution_history(executionArn=execution_arn)
+            assert len(history["events"]) == 6
+            assert [e["type"] for e in history["events"]] == [
+                "ExecutionStarted",
+                "TaskStateEntered",
+                "LambdaFunctionScheduled",
+                "LambdaFunctionStarted",
+                "LambdaFunctionFailed",
+                "ExecutionFailed",
+            ]
+
+            client.delete_state_machine(stateMachineArn=state_machine_arn)
+            iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
+            iam.delete_role(RoleName=role_name)
+            break
+        sleep(1)
+    else:
+        client.delete_state_machine(stateMachineArn=state_machine_arn)
+        iam.delete_role_policy(RoleName=role_name, PolicyName="allowLambdaInvoke")
+        iam.delete_role(RoleName=role_name)
+        assert False, "Should have failed already"
diff --git a/tests/test_stepfunctions/parser/test_stepfunctions_sns_integration.py b/tests/test_stepfunctions/parser/test_stepfunctions_sns_integration.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_stepfunctions_sns_integration.py
@@ -0,0 +1,36 @@
+import json
+from unittest import SkipTest
+
+import boto3
+
+from moto import mock_aws, settings
+from moto.sns.models import sns_backends
+from tests import DEFAULT_ACCOUNT_ID
+
+from . import verify_execution_result
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_calling_sns_publish():
+    if not settings.TEST_DECORATOR_MODE:
+        raise SkipTest("No point in testing this in ServerMode")
+    sns = boto3.client("sns", "us-east-1")
+    topic_arn = sns.create_topic(Name="mytopic")["TopicArn"]
+
+    exec_input = {"TopicArn": topic_arn, "Message": "my msg"}
+
+    expected_status = "SUCCEEDED"
+    tmpl_name = "services/sns_publish"
+
+    def _verify_result(client, execution, execution_arn):
+        assert "stopDate" in execution
+        assert json.loads(execution["input"]) == exec_input
+        assert "MessageId" in json.loads(execution["output"])
+
+        backend = sns_backends[DEFAULT_ACCOUNT_ID]["us-east-1"]
+        topic = list(backend.topics.values())[0]
+        notification = topic.sent_notifications[0]
+        _, msg, _, _, _ = notification
+        assert msg == "my msg"
+
+    verify_execution_result(_verify_result, expected_status, tmpl_name, exec_input=json.dumps(exec_input))
diff --git a/tests/test_stepfunctions/parser/test_stepfunctions_sqs_integration.py b/tests/test_stepfunctions/parser/test_stepfunctions_sqs_integration.py
new file mode 100644
--- /dev/null
+++ b/tests/test_stepfunctions/parser/test_stepfunctions_sqs_integration.py
@@ -0,0 +1,72 @@
+import json
+from unittest import SkipTest
+from uuid import uuid4
+
+import boto3
+
+from moto import mock_aws, settings
+
+from . import verify_execution_result
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_calling_sqs_with_heartbeat():
+    if not settings.TEST_DECORATOR_MODE:
+        raise SkipTest("No point in testing this in ServerMode")
+    sqs = boto3.client("sqs", "us-east-1")
+    sfn = boto3.client("stepfunctions", "us-east-1")
+    queue_name = f"queue{uuid4()}"
+    queue_url = sqs.create_queue(QueueName=queue_name)["QueueUrl"]
+
+    message_txt = "test_message_txt"
+    exec_input = {"QueueUrl": queue_url, "Message": message_txt}
+
+    expected_status = "RUNNING"
+    tmpl_name = "services/sqs_heartbeat"
+
+    def _verify_result(client, execution, execution_arn):
+
+        resp = sqs.receive_message(QueueUrl=queue_url)
+        if "Messages" in resp:
+            task_token = json.loads(resp["Messages"][0]["Body"])["TaskToken"]
+
+            sfn.send_task_heartbeat(taskToken=task_token)
+            sfn.send_task_failure(taskToken=task_token)
+            return True
+
+        return False
+
+    verify_execution_result(
+        _verify_result, expected_status, tmpl_name, exec_input=json.dumps(exec_input)
+    )
+
+
+@mock_aws(config={"stepfunctions": {"execute_state_machine": True}})
+def test_state_machine_calling_sqs_with_task_success():
+    if not settings.TEST_DECORATOR_MODE:
+        raise SkipTest("No point in testing this in ServerMode")
+    sqs = boto3.client("sqs", "us-east-1")
+    sfn = boto3.client("stepfunctions", "us-east-1")
+    queue_name = f"queue{uuid4()}"
+    queue_url = sqs.create_queue(QueueName=queue_name)["QueueUrl"]
+
+    message_txt = "test_message_txt"
+    exec_input = {"QueueUrl": queue_url, "Message": message_txt}
+
+    expected_status = "RUNNING"
+    tmpl_name = "services/sqs_heartbeat"
+
+    def _verify_result(client, execution, execution_arn):
+
+        resp = sqs.receive_message(QueueUrl=queue_url)
+        if "Messages" in resp:
+            task_token = json.loads(resp["Messages"][0]["Body"])["TaskToken"]
+
+            sfn.send_task_success(taskToken=task_token, output="it's done")
+            return True
+
+        return False
+
+    verify_execution_result(
+        _verify_result, expected_status, tmpl_name, exec_input=json.dumps(exec_input)
+    )
diff --git a/tests/test_stepfunctions/test_stepfunctions.py b/tests/test_stepfunctions/test_stepfunctions.py
--- a/tests/test_stepfunctions/test_stepfunctions.py
+++ b/tests/test_stepfunctions/test_stepfunctions.py
@@ -657,7 +657,7 @@ def test_state_machine_describe_execution_with_no_input():
     #
     assert description["ResponseMetadata"]["HTTPStatusCode"] == 200
     assert description["executionArn"] == execution["executionArn"]
-    assert description["input"] == "{}"
+    assert description["input"] == '"{}"'
     assert re.match("[-0-9a-z]+", description["name"])
     assert description["startDate"] == execution["startDate"]
     assert description["stateMachineArn"] == sm["stateMachineArn"]
@@ -680,7 +680,7 @@ def test_state_machine_describe_execution_with_custom_input():
     #
     assert description["ResponseMetadata"]["HTTPStatusCode"] == 200
     assert description["executionArn"] == execution["executionArn"]
-    assert description["input"] == execution_input
+    assert json.loads(description["input"]) == execution_input
     assert re.match("[-a-z0-9]+", description["name"])
     assert description["startDate"] == execution["startDate"]
     assert description["stateMachineArn"] == sm["stateMachineArn"]