Datasets:
py_ast

	# coding=utf-8
	# Copyright 2020 The HuggingFace Datasets Authors and the current dataset script contributor.
	#
	# Licensed under the Apache License, Version 2.0 (the "License");
	# you may not use this file except in compliance with the License.
	# You may obtain a copy of the License at
	#
	# http://www.apache.org/licenses/LICENSE-2.0
	#
	# Unless required by applicable law or agreed to in writing, software
	# distributed under the License is distributed on an "AS IS" BASIS,
	# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	# See the License for the specific language governing permissions and
	# limitations under the License.
	"""TODO: Add a description here."""


	import json

	import datasets


	# TODO: Add BibTeX citation
	# Find for instance the citation on arxiv or on the dataset repo/website
	_CITATION = """\
	@InProceedings{OOPSLA ’16, ACM,
	title = {Probabilistic Model for Code with Decision Trees.},
	authors={Raychev, V., Bielik, P., and Vechev, M.},
	year={2016}
	}
	"""

	# TODO: Add description of the dataset here
	# You can copy an official description
	_DESCRIPTION = """\
	Dataset consisting of parsed ASTs that were used to train and
	evaluate the DeepSyn tool.
	The Python programs are collected from GitHub repositories
	by removing duplicate files, removing project forks (copy of another existing repository)
	,keeping only programs that parse and have at most 30'000 nodes in the AST and
	we aim to remove obfuscated files"""

	# TODO: Add a link to an official homepage for the dataset here
	_HOMEPAGE = "https://www.sri.inf.ethz.ch/py150"
	# TODO: Add the licence for the dataset here if you can find it
	_LICENSE = ""

	# TODO: Add link to the official dataset URLs here
	# The HuggingFace dataset library don't host the datasets but only point to the original files
	# This can be an arbitrary nested dict/list of URLs (see below in `_split_generators` method)
	_URLs = {
	"ast": "http://files.srl.inf.ethz.ch/data/py150.tar.gz",
	}


	# TODO: Name of the dataset usually match the script name with CamelCase instead of snake_case
	class PyAst(datasets.GeneratorBasedBuilder):
	"""TODO: Short description of my dataset."""

	VERSION = datasets.Version("1.0.0")

	# This is an example of a dataset with multiple configurations.
	# If you don't want/need to define several sub-sets in your dataset,
	# just remove the BUILDER_CONFIG_CLASS and the BUILDER_CONFIGS attributes.

	# If you need to make complex sub-parts in the datasets with configurable options
	# You can create your own builder configuration class to store attribute, inheriting from datasets.BuilderConfig
	# BUILDER_CONFIG_CLASS = MyBuilderConfig

	# You will be able to load one or the other configurations in the following list with
	# data = datasets.load_dataset('my_dataset', 'first_domain')
	# data = datasets.load_dataset('my_dataset', 'second_domain')
	BUILDER_CONFIGS = [
	datasets.BuilderConfig(name="ast", description="This part of the dataset contains 150 parsed python ASTs."),
	]

	DEFAULT_CONFIG_NAME = "ast" # It's not mandatory to have a default configuration. Just use one if it make sense.

	def _info(self):
	# TODO: This method pecifies the datasets.DatasetInfo object which contains informations and typings for the dataset
	if self.config.name == "ast": # This is the name of the configuration selected in BUILDER_CONFIGS above
	features = datasets.Features(
	{
	"ast": datasets.Sequence(
	{
	"type": datasets.Value("string"),
	"value": datasets.Value("string"),
	"children": datasets.Sequence(datasets.Value("int32")),
	},
	)
	# These are the features of your dataset like images, labels ...
	}
	)
	return datasets.DatasetInfo(
	# This is the description that will appear on the datasets page.
	description=_DESCRIPTION,
	# This defines the different columns of the dataset and their types
	features=features, # Here we define them above because they are different between the two configurations
	# If there's a common (input, target) tuple from the features,
	# specify them here. They'll be used if as_supervised=True in
	# builder.as_dataset.
	supervised_keys=["ast"],
	# Homepage of the dataset for documentation
	homepage=_HOMEPAGE,
	# License for the dataset if available
	license=_LICENSE,
	# Citation for the dataset
	citation=_CITATION,
	)

	def _split_generators(self, dl_manager):
	"""Returns SplitGenerators."""
	# TODO: This method is tasked with downloading/extracting the data and defining the splits depending on the configuration
	# If several configurations are possible (listed in BUILDER_CONFIGS), the configuration selected by the user is in self.config.name

	# dl_manager is a datasets.download.DownloadManager that can be used to download and extract URLs
	# It can accept any type or nested list/dict and will give back the same structure with the url replaced with path to local files.
	# By default the archives will be extracted and a path to a cached folder where they are extracted is returned instead of the archive
	my_urls = _URLs[self.config.name]
	archive = dl_manager.download(my_urls)
	return [
	datasets.SplitGenerator(
	name=datasets.Split.TRAIN,
	# These kwargs will be passed to _generate_examples
	gen_kwargs={
	"filepath": "python100k_train.json",
	"files": dl_manager.iter_archive(archive),
	},
	),
	datasets.SplitGenerator(
	name=datasets.Split.TEST,
	# These kwargs will be passed to _generate_examples
	gen_kwargs={
	"filepath": "python50k_eval.json",
	"files": dl_manager.iter_archive(archive),
	},
	),
	]

	def _generate_examples(self, filepath, files):
	"""Yields examples."""
	# TODO: This method will receive as arguments the `gen_kwargs` defined in the previous `_split_generators` method.
	# It is in charge of opening the given file and yielding (key, example) tuples from the dataset
	# The key is not important, it's more here for legacy reason (legacy from tfds)
	for path, f in files:
	if path == filepath:
	for id_, row in enumerate(f):
	row_data = json.loads(row.decode("utf-8"))
	for node in row_data:
	if "value" not in node:
	node["value"] = "N/A"
	if "children" not in node:
	node["children"] = []
	yield id_, {
	"ast": row_data,
	}
	break