def p_call(p):
    """call : ID OPEN_PAREN CLOSE_PAREN
            | ID OPEN_PAREN argument_list CLOSE_PAREN """
    if len(p) == 4:
        p[0] = ['FUNC_CALL', p[1], []]
    else:
        p[0] = ['FUNC_CALL', p[1], p[3]]
