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Add some comments for Union types in `sphinx.util.typing` (#12281)

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Bénédikt Tran 2024-04-23 00:27:42 +02:00 committed by GitHub
parent 48a345b7c5
commit a5f534a77d
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sphinx/util/typing.py
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@ -186,6 +186,8 @@ def restify(cls: type | None, mode: str = 'fully-qualified-except-typing') -> st
else:
return f':py:class:`{cls.__name__}`'
elif UnionType and isinstance(cls, UnionType):
# Union types (PEP 585) retain their definition order when they
# are printed natively and ``None``-like types are kept as is.
return ' | '.join(restify(a, mode) for a in cls.__args__)
elif cls.__module__ in ('__builtin__', 'builtins'):
if hasattr(cls, '__args__'):
@ -199,6 +201,7 @@ def restify(cls: type | None, mode: str = 'fully-qualified-except-typing') -> st
elif (inspect.isgenericalias(cls)
and cls.__module__ == 'typing'
and cls.__origin__ is Union): # type: ignore[attr-defined]
# *cls* is defined in ``typing``, and thus ``__args__`` must exist
return ' | '.join(restify(a, mode) for a in cls.__args__) # type: ignore[attr-defined]
elif inspect.isgenericalias(cls):
if isinstance(cls.__origin__, typing._SpecialForm): # type: ignore[attr-defined]