_token.py 文件源码

def __init__(self, text: str, start_location: Location, end_location: Location):
        super().__init__(text, start_location, end_location)
        if self._clean_text.startswith('0b'):
            self._base = IntegerBase.base2
            m = re.fullmatch(self._regex2, self._clean_text)
        elif self._clean_text.startswith('0o'):
            self._base = IntegerBase.base8
            m = re.fullmatch(self._regex8, self._clean_text)
        elif self._clean_text.startswith('0x'):
            self._base = IntegerBase.base16
            m = re.fullmatch(self._regex16, self._clean_text)
        else:
            self._base = IntegerBase.base10
            m = re.fullmatch(self._regex10, self._clean_text)
        if m is None:
            raise SyntacticalError(self, 'Malformed {}'.format(self.short_name()))
        self._value = int(m.group(1), self._base.value)
        suffix = m.group(2)
        if suffix is not None:
            self._kind = IntegerKind(suffix)
        else:
            self._kind = IntegerKind.NONE