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# Copyright (c) Facebook, Inc. and its affiliates. All Rights Reserved.
def _register_generic(module_dict, module_name, module):
assert module_name not in module_dict
module_dict[module_name] = module
class Registry(dict):
"""
A helper class for managing registering modules, it extends a dictionary
and provides a register functions.
Eg. creeting a registry:
some_registry = Registry({"default": default_module})
There're two ways of registering new modules:
1): normal way is just calling register function:
def foo():
...
some_registry.register("foo_module", foo)
2): used as decorator when declaring the module:
@some_registry.register("foo_module")
@some_registry.register("foo_modeul_nickname")
def foo():
...
Access of module is just like using a dictionary, eg:
f = some_registry["foo_modeul"]
"""
def __init__(self, *args, **kwargs):
super(Registry, self).__init__(*args, **kwargs)
def register(self, module_name, module=None):
# used as function call
if module is not None:
_register_generic(self, module_name, module)
return
# used as decorator
def register_fn(fn):
_register_generic(self, module_name, fn)
return fn
return register_fn
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