parser.py 文件源码

def __init__(self, lex_options=None, yacc_options=None):
        super(Parser, self).__init__()

        lex_options = lex_options or {}
        lex_options.setdefault('debug', False)
        lex_options.setdefault('optimize', True)

        self.lexer = Lexer(**lex_options)
        self.tokens = self.lexer.tokens

        yacc_options = yacc_options or {}
        yacc_options.setdefault('debug', False)
        yacc_options.setdefault('optimize', True)

        self.parser = yacc.yacc(module=self, **yacc_options)