forked from bot/app
45 lines
1.2 KiB
Python
45 lines
1.2 KiB
Python
# -*- coding: utf-8 -*-
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"""
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Copyright (C) 2020-2024 LiteyukiStudio. All Rights Reserved
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@Time : 2024/8/19 下午10:55
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@Author : snowykami
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@Email : snowykami@outlook.com
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@File : rule.py
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@Software: PyCharm
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"""
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import inspect
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from typing import Optional, TypeAlias, Callable, Coroutine
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from liteyuki.message.event import MessageEvent
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RuleHandlerFunc: TypeAlias = Callable[[MessageEvent], Coroutine[None, None, bool]]
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"""规则函数签名"""
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class Rule:
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def __init__(self, handler: RuleHandlerFunc):
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self.handler = handler
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def __or__(self, other: "Rule") -> "Rule":
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async def combined_handler(event: MessageEvent) -> bool:
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return await self.handler(event) or await other.handler(event)
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return Rule(combined_handler)
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def __and__(self, other: "Rule") -> "Rule":
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async def combined_handler(event: MessageEvent) -> bool:
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return await self.handler(event) and await other.handler(event)
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return Rule(combined_handler)
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async def __call__(self, event: MessageEvent) -> bool:
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if self.handler is None:
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return True
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return await self.handler(event)
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@Rule
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async def empty_rule(event: MessageEvent) -> bool:
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return True
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