nonebot2/nonebot/dependencies/utils.py
2022-01-21 21:04:17 +08:00

38 lines
1.2 KiB
Python

import inspect
from typing import Any, Dict, Callable
from loguru import logger
from pydantic.typing import ForwardRef, evaluate_forwardref
def get_typed_signature(call: Callable[..., Any]) -> inspect.Signature:
"""获取可调用对象签名"""
signature = inspect.signature(call)
globalns = getattr(call, "__globals__", {})
typed_params = [
inspect.Parameter(
name=param.name,
kind=param.kind,
default=param.default,
annotation=get_typed_annotation(param, globalns),
)
for param in signature.parameters.values()
]
typed_signature = inspect.Signature(typed_params)
return typed_signature
def get_typed_annotation(param: inspect.Parameter, globalns: Dict[str, Any]) -> Any:
"""获取参数的类型注解"""
annotation = param.annotation
if isinstance(annotation, str):
annotation = ForwardRef(annotation)
try:
annotation = evaluate_forwardref(annotation, globalns, globalns)
except Exception as e:
logger.opt(colors=True, exception=e).warning(
f'Unknown ForwardRef["{param.annotation}"] for parameter {param.name}'
)
return inspect.Parameter.empty
return annotation