_regex_core.py 文件源码

def match(self, substring):
        string = self.string
        pos = self.pos

        if self.ignore_space:
            try:
                for c in substring:
                    while True:
                        if string[pos].isspace():
                            # Skip over the whitespace.
                            pos += 1
                        elif string[pos] == "#":
                            # Skip over the comment to the end of the line.
                            pos = string.index("\n", pos)
                        else:
                            break

                    if string[pos] != c:
                        return False

                    pos += 1

                self.pos = pos

                return True
            except IndexError:
                # We've reached the end of the string.
                return False
            except ValueError:
                # The comment extended to the end of the string.
                return False
        else:
            if not string.startswith(substring, pos):
                return False

            self.pos = pos + len(substring)

            return True