2024-08-19 23:47:39 +08:00
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# -*- 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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2024-08-20 06:20:41 +08:00
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"""
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from typing import Optional, TypeAlias, Callable, Coroutine
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from liteyuki.message.event import Event
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RuleHandler: TypeAlias = Callable[[Event], 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: Optional[RuleHandler] = None):
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self.handler = handler
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def __or__(self, other: "Rule") -> "Rule":
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return Rule(lambda event: self.handler(event) or other.handler(event))
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def __and__(self, other: "Rule") -> "Rule":
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return Rule(lambda event: self.handler(event) and other.handler(event))
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async def __call__(self, event: Event) -> 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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