pattern_matching.py 文件源码

def __init__(self, spec):
        spec, pattern_types = grok_re_preprocess(spec)
        self.type_collection = TypeCollection(pattern_types)
        if is_named_re(spec):
            self.re = regex.compile(spec)
            self.parse = None
        else:
            self.re = None
            self.parse = parse.compile(spec)