parser.py 文件源码

def main(argv):
    try:
        opts, args = getopt.getopt(argv, "hf:", ["file"])
    except getopt.GetoptError:
        print('program.py -f <file>')
        sys.exit(2)
    for opt, arg in opts:
        if opt == '-h':
            print('program.py -f <file>')
            sys.exit()
        elif opt in ("-f", "--file"):
            f = arg

    input_ = ''
    with open(f, 'r') as file:
        file = open(f, 'r')
        for line in file:
            input_ += line
    file.close()

    # Build the parser
    parser = yacc.yacc()

    program = parser.parse(input_)
    if program:
        program.print_name()
        program.check_node()
        print('Variaveis declaradas', declared_variables)