app/liteyuki/message/rule.py
2024-08-22 09:35:02 +08:00

45 lines
1.2 KiB
Python

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