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[commands] Fix Optional handling when the inner type is a converter

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Rapptz 2022-04-11 19:18:19 -04:00
parent f072edfdfc
commit 9d05f55ddb
1 changed files with 12 additions and 2 deletions
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14
discord/ext/commands/hybrid.py
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@ -136,11 +136,21 @@ def replace_parameters(parameters: Dict[str, Parameter], signature: inspect.Sign
params = signature.parameters.copy()
for name, parameter in parameters.items():
is_transformer = hasattr(parameter.converter, '__discord_app_commands_transformer__')
origin = getattr(parameter.converter, '__origin__', None)
if is_converter(parameter.converter) and not is_transformer:
params[name] = params[name].replace(annotation=make_converter_transformer(parameter.converter))
if callable(parameter.converter) and not inspect.isclass(parameter.converter) and not is_transformer:
# Special case Optional[X] where X is a single type that can optionally be a converter
elif origin is Union and len(parameter.converter.__args__) == 2 and parameter.converter.__args__[-1] is _NoneType:
inner = parameter.converter.__args__[0]
is_inner_tranformer = hasattr(inner, '__discord_app_commands_transformer__')
if is_converter(inner) and not is_inner_tranformer:
params[name] = params[name].replace(annotation=Optional[make_converter_transformer(inner)]) # type: ignore
elif callable(parameter.converter) and not inspect.isclass(parameter.converter) and not is_transformer:
params[name] = params[name].replace(annotation=make_callable_transformer(parameter.converter))
if callable(parameter.default):
if parameter.default is not parameter.empty and callable(parameter.default):
params[name] = params[name].replace(default=_CallableDefault(parameter.default))
if isinstance(params[name].default, Parameter):