Method from_pattern

preprocessor/docopt.py:289–292

(source)

    @staticmethod
    def from_pattern(source):
        source = re.sub(r'([\[\]\(\)\|]|\.\.\.)', r' \1 ', source)
        source = [s for s in re.split('\s+|(\S*<.*?>)', source) if s]
        return Tokens(source, error=DocoptLanguageError)

    def move(self):
        return self.pop(0) if len(self) else None