test_parsing.py 文件源码

def test_allow_recursion_deeper_than_the_recursion_limit(self):
        expr = parsing.forward_ref()
        expr.set(
            parsing.union(
                parsing.seq(parsing.txt("("), expr, parsing.txt(")"), pick=1),
                parsing.txt("a")
            )
        )

        limit = 2 * sys.getrecursionlimit()
        string = (limit * "(") + "a" + (limit * ")")
        self.assertEqual(expr.parse(string), ('a', ''))