✨ 添加对主流框架的消息io支持

liteyuki/message/rule.py

@@ -7,4 +7,27 @@ Copyright (C) 2020-2024 LiteyukiStudio. All Rights Reserved
 @Email   : snowykami@outlook.com
 @File    : rule.py
 @Software: PyCharm
-"""
+"""
+
+from typing import Optional, TypeAlias, Callable, Coroutine
+
+from liteyuki.message.event import Event
+
+RuleHandler: TypeAlias = Callable[[Event], Coroutine[None, None, bool]]
+"""规则函数签名"""
+
+
+class Rule:
+    def __init__(self, handler: Optional[RuleHandler] = None):
+        self.handler = handler
+
+    def __or__(self, other: "Rule") -> "Rule":
+        return Rule(lambda event: self.handler(event) or other.handler(event))
+
+    def __and__(self, other: "Rule") -> "Rule":
+        return Rule(lambda event: self.handler(event) and other.handler(event))
+
+    async def __call__(self, event: Event) -> bool:
+        if self.handler is None:
+            return True
+        return await self.handler(event)