Created
January 14, 2022 14:00
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| def _parse_callable_arg_list(args: Sequence[object]) -> Sequence[SigParameter]: | |
| return [ | |
| SigParameter(f".arg{i}", ParameterKind.POSITIONAL_ONLY, annotation=parse_type(arg)) | |
| for i, arg in enumerate(args) | |
| ] | |
| # Proposed "nested" approach | |
| def parse_callable(node: Union[CallableType, AsyncCallableType]) -> Value: | |
| return_value = parse_type(node.returns) | |
| if isinstance(node, AsyncCallableType): | |
| return_value = GenericValue(Awaitable, [return_value]) | |
| if isinstance(node.args, AnyArguments): | |
| params = [SigParameter("...", ParameterKind.ELLIPSIS)] | |
| elif isinstance(node.args, CallableArgumentsList): | |
| params = _parse_callable_arg_list(node.args.posonlyargs) | |
| else: # CallableConcatenation | |
| params = [ | |
| *_parse_callable_arg_list(node.args.posonlyargs) | |
| # ... validate that it's really a ParamSpec | |
| SigParameter("P", ParameterKind.ELLIPSIS, annotation=node.args.paramspec) | |
| ] | |
| return CallableValue(Signature.make(params, return_value)) | |
| # Proposed "flat" approach | |
| def parse_callable(node: CallableType) -> Value: | |
| return_value = parse_type(node.returns) | |
| if node.is_async: | |
| return_value = GenericValue(Awaitable, [return_value]) | |
| params = [] | |
| if node.is_any_params: | |
| params.append(SigParameter("...", ParameterKind.ELLIPSIS)) | |
| if node.positional_only_args: | |
| params += _parse_callable_arg_list(node.positional_only_args) | |
| if node.param_spec: | |
| # ... validate that it's really a ParamSpec | |
| params.append(SigParameter("P", ParameterKind.ELLIPSIS, annotation=node.args.paramspec)) | |
| return CallableValue(Signature.make(params, return_value)) |
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