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[commands] Add support for typing.Annotated

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Rapptz
2022-04-22 06:21:10 -04:00
parent ab33551553
commit 5fcd4e411f
3 changed files with 35 additions and 0 deletions
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3
discord/app_commands/transformers.py
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@ -625,6 +625,9 @@ def get_supported_annotation(
if hasattr(annotation, '__discord_app_commands_transform__'):
return (annotation.metadata, MISSING)
if hasattr(annotation, '__metadata__'):
return get_supported_annotation(annotation.__metadata__[0])
if inspect.isclass(annotation):
if issubclass(annotation, Transformer):
return (annotation, MISSING)

6
discord/ext/commands/core.py
View File

@ -161,6 +161,12 @@ def get_signature_parameters(
if annotation is Greedy:
raise TypeError('Unparameterized Greedy[...] is disallowed in signature.')
if hasattr(annotation, '__metadata__'):
# Annotated[X, Y] can access Y via __metadata__
metadata = annotation.__metadata__
if len(metadata) >= 1:
annotation = metadata[0]
if isinstance(annotation, discord.app_commands.transformers._TransformMetadata):
annotation = annotation.metadata