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-exception
6//
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
19void
20test(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(syntax: std::regex_constants::ECMAScript);
52 test(syntax: std::regex_constants::extended);
53
54 return 0;
55}
56

source code of libcxx/test/std/re/re.results/re.results.acc/index.pass.cpp