def p_define_function_params(self, p):
        if len(p) == 2:
            if p[1] == 'ELLIPSIS':
                p[0] = ('...',)
            else:
                p[0] = p[1]
        else:
            p[0] = p[1] + ('...',)
define_function_params : identifier_list_opt
dataset/ETHPy150Open ardekantur/pyglet/tools/wraptypes/preprocessor.py/PreprocessorGrammar.p_define_function_params