56 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <regex>10 11// class match_results<BidirectionalIterator, Allocator>12 13// const_reference operator[](size_type n) const;14 15#include <regex>16#include <cassert>17#include "test_macros.h"18 19void20test(std::regex_constants::syntax_option_type syntax)21{22 std::match_results<const char*> m;23 const char s[] = "abcdefghijk";24 assert(std::regex_search(s, m, std::regex("cd((e)fg)hi|(z)", syntax)));25 26 assert(m.size() == 4);27 28 assert(m[0].first == s+2);29 assert(m[0].second == s+9);30 assert(m[0].matched == true);31 32 assert(m[1].first == s+4);33 assert(m[1].second == s+7);34 assert(m[1].matched == true);35 36 assert(m[2].first == s+4);37 assert(m[2].second == s+5);38 assert(m[2].matched == true);39 40 assert(m[3].first == s+11);41 assert(m[3].second == s+11);42 assert(m[3].matched == false);43 44 assert(m[4].first == s+11);45 assert(m[4].second == s+11);46 assert(m[4].matched == false);47}48 49int main(int, char**)50{51 test(std::regex_constants::ECMAScript);52 test(std::regex_constants::extended);53 54 return 0;55}56