nonebot2/nonebot/typing.py

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"""本模块定义了 NoneBot 模块中共享的一些类型。
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使用 Python Type Hint 语法
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参考 [`PEP 484`](https://www.python.org/dev/peps/pep-0484/),
[`PEP 526`](https://www.python.org/dev/peps/pep-0526/)
[`typing`](https://docs.python.org/3/library/typing.html)
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FrontMatter:
sidebar_position: 11
description: nonebot.typing 模块
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"""
import sys
import types
import warnings
import contextlib
import typing as t
import typing_extensions as t_ext
from typing import TYPE_CHECKING, TypeVar
from typing_extensions import ParamSpec, TypeAlias, get_args, override, get_origin
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if TYPE_CHECKING:
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from asyncio import Task
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from nonebot.adapters import Bot
from nonebot.permission import Permission
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T = TypeVar("T")
P = ParamSpec("P")
T_Wrapped: TypeAlias = t.Callable[P, T]
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def overrides(InterfaceClass: object):
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"""标记一个方法为父类 interface 的 implement"""
warnings.warn(
"overrides is deprecated and will be removed in a future version, "
"use @typing_extensions.override instead. "
"See [PEP 698](https://peps.python.org/pep-0698/) for more details.",
DeprecationWarning,
)
return override
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if sys.version_info < (3, 10):
def origin_is_union(origin: t.Optional[t.Type[t.Any]]) -> bool:
"""判断是否是 Union 类型"""
return origin is t.Union
else:
def origin_is_union(origin: t.Optional[t.Type[t.Any]]) -> bool:
return origin is t.Union or origin is types.UnionType
def origin_is_literal(origin: t.Optional[t.Type[t.Any]]) -> bool:
"""判断是否是 Literal 类型"""
return origin is t.Literal or origin is t_ext.Literal
def _literal_values(type_: t.Type[t.Any]) -> t.Tuple[t.Any, ...]:
return get_args(type_)
def all_literal_values(type_: t.Type[t.Any]) -> t.List[t.Any]:
"""获取 Literal 类型包含的所有值"""
if not origin_is_literal(get_origin(type_)):
return [type_]
return [x for value in _literal_values(type_) for x in all_literal_values(value)]
def origin_is_annotated(origin: t.Optional[t.Type[t.Any]]) -> bool:
"""判断是否是 Annotated 类型"""
with contextlib.suppress(TypeError):
return origin is not None and issubclass(origin, t_ext.Annotated)
return False
NONE_TYPES = {None, type(None), t.Literal[None], t_ext.Literal[None]}
if sys.version_info >= (3, 10):
NONE_TYPES.add(types.NoneType)
def is_none_type(type_: t.Type[t.Any]) -> bool:
"""判断是否是 None 类型"""
return type_ in NONE_TYPES
if sys.version_info < (3, 9): # pragma: py-lt-39
def evaluate_forwardref(
ref: t.ForwardRef, globalns: t.Dict[str, t.Any], localns: t.Dict[str, t.Any]
) -> t.Any:
return ref._evaluate(globalns, localns)
else: # pragma: py-gte-39
def evaluate_forwardref(
ref: t.ForwardRef, globalns: t.Dict[str, t.Any], localns: t.Dict[str, t.Any]
) -> t.Any:
return ref._evaluate(globalns, localns, frozenset())
# state
T_State: TypeAlias = t.Dict[t.Any, t.Any]
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"""事件处理状态 State 类型"""
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_DependentCallable: TypeAlias = t.Union[
t.Callable[..., T], t.Callable[..., t.Awaitable[T]]
]
# driver hooks
T_BotConnectionHook: TypeAlias = _DependentCallable[t.Any]
"""Bot 连接建立时钩子函数
依赖参数:
- DependParam: 子依赖参数
- BotParam: Bot 对象
- DefaultParam: 带有默认值的参数
"""
T_BotDisconnectionHook: TypeAlias = _DependentCallable[t.Any]
"""Bot 连接断开时钩子函数
依赖参数:
- DependParam: 子依赖参数
- BotParam: Bot 对象
- DefaultParam: 带有默认值的参数
"""
# api hooks
T_CallingAPIHook: TypeAlias = t.Callable[
["Bot", str, t.Dict[str, t.Any]], t.Awaitable[t.Any]
]
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"""`bot.call_api` 钩子函数"""
T_CalledAPIHook: TypeAlias = t.Callable[
["Bot", t.Optional[Exception], str, t.Dict[str, t.Any], t.Any], t.Awaitable[t.Any]
]
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"""`bot.call_api` 后执行的函数,参数分别为 bot, exception, api, data, result"""
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# event hooks
T_EventPreProcessor: TypeAlias = _DependentCallable[t.Any]
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"""事件预处理函数 EventPreProcessor 类型
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- DefaultParam: 带有默认值的参数
"""
T_EventPostProcessor: TypeAlias = _DependentCallable[t.Any]
"""事件后处理函数 EventPostProcessor 类型
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- DefaultParam: 带有默认值的参数
"""
# matcher run hooks
T_RunPreProcessor: TypeAlias = _DependentCallable[t.Any]
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"""事件响应器运行前预处理函数 RunPreProcessor 类型
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- MatcherParam: Matcher 对象
- DefaultParam: 带有默认值的参数
"""
T_RunPostProcessor: TypeAlias = _DependentCallable[t.Any]
"""事件响应器运行后后处理函数 RunPostProcessor 类型
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- MatcherParam: Matcher 对象
- ExceptionParam: 异常对象可能为 None
- DefaultParam: 带有默认值的参数
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"""
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# rule, permission
T_RuleChecker: TypeAlias = _DependentCallable[bool]
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"""RuleChecker 即判断是否响应事件的处理函数。
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- DefaultParam: 带有默认值的参数
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"""
T_PermissionChecker: TypeAlias = _DependentCallable[bool]
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"""PermissionChecker 即判断事件是否满足权限的处理函数。
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- DefaultParam: 带有默认值的参数
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"""
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T_Handler: TypeAlias = _DependentCallable[t.Any]
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"""Handler 处理函数。"""
T_TypeUpdater: TypeAlias = _DependentCallable[str]
"""TypeUpdater 在 Matcher.pause, Matcher.reject 时被运行,用于更新响应的事件类型。
默认会更新为 `message`
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- MatcherParam: Matcher 对象
- DefaultParam: 带有默认值的参数
"""
T_PermissionUpdater: TypeAlias = _DependentCallable["Permission"]
"""PermissionUpdater 在 Matcher.pause, Matcher.reject 时被运行,用于更新会话对象权限。
默认会更新为当前事件的触发对象
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依赖参数:
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- DependParam: 子依赖参数
- BotParam: Bot 对象
- EventParam: Event 对象
- StateParam: State 对象
- MatcherParam: Matcher 对象
- DefaultParam: 带有默认值的参数
"""
T_DependencyCache: TypeAlias = t.Dict[_DependentCallable[t.Any], "Task[t.Any]"]
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"""依赖缓存, 用于存储依赖函数的返回值"""