Method match

preprocessor/docopt.py:270–279

(self, left, collected=None)

class Either(BranchPattern):

    def match(self, left, collected=None):
        collected = [] if collected is None else collected
        outcomes = []
        for pattern in self.children:
            matched, _, _ = outcome = pattern.match(left, collected)
            if matched:
                outcomes.append(outcome)
        if outcomes:
            return min(outcomes, key=lambda outcome: len(outcome[1]))
        return False, left, collected


class Tokens(list):