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54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
"""
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FrontMatter:
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sidebar_position: 1
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description: nonebot.dependencies.utils 模块
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"""
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import inspect
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from typing import Any, Dict, TypeVar, Callable, ForwardRef
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from loguru import logger
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from pydantic.fields import ModelField
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from pydantic.typing import evaluate_forwardref
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from nonebot.exception import TypeMisMatch
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V = TypeVar("V")
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def get_typed_signature(call: Callable[..., Any]) -> inspect.Signature:
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"""获取可调用对象签名"""
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signature = inspect.signature(call)
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globalns = getattr(call, "__globals__", {})
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typed_params = [
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inspect.Parameter(
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name=param.name,
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kind=param.kind,
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default=param.default,
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annotation=get_typed_annotation(param, globalns),
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)
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for param in signature.parameters.values()
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]
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return inspect.Signature(typed_params)
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def get_typed_annotation(param: inspect.Parameter, globalns: Dict[str, Any]) -> Any:
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"""获取参数的类型注解"""
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annotation = param.annotation
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if isinstance(annotation, str):
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annotation = ForwardRef(annotation)
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try:
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annotation = evaluate_forwardref(annotation, globalns, globalns)
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except Exception as e:
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logger.opt(colors=True, exception=e).warning(
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f'Unknown ForwardRef["{param.annotation}"] for parameter {param.name}'
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)
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return inspect.Parameter.empty
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return annotation
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def check_field_type(field: ModelField, value: V) -> V:
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_, errs_ = field.validate(value, {}, loc=())
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if errs_:
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raise TypeMisMatch(field, value)
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return value
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