Method __call__

nonebot/rule.py:165–177

(self, event: Event, state: T_State)

        return hash((frozenset(self.msg), self.ignorecase))

    async def __call__(self, event: Event, state: T_State) -> bool:
        try:
            text = event.get_plaintext()
        except Exception:
            return False
        if match := re.match(
            f"^(?:{'|'.join(re.escape(prefix) for prefix in self.msg)})",
            text,
            re.IGNORECASE if self.ignorecase else 0,
        ):
            state[STARTSWITH_KEY] = match.group()
            return True
        return False


def startswith(msg: str | tuple[str, ...], ignorecase: bool = False) -> Rule: