1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <regex>
11 
12 // class match_results<BidirectionalIterator, Allocator>
13 
14 // const_reference operator[](size_type n) const;
15 
16 #include <regex>
17 #include <cassert>
18 
19 void
test()20 test()
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")));
25 
26     assert(m[0].first == s+2);
27     assert(m[0].second == s+9);
28     assert(m[0].matched == true);
29 
30     assert(m[1].first == s+4);
31     assert(m[1].second == s+7);
32     assert(m[1].matched == true);
33 
34     assert(m[2].first == s+4);
35     assert(m[2].second == s+5);
36     assert(m[2].matched == true);
37 
38     assert(m[3].first == s+11);
39     assert(m[3].second == s+11);
40     assert(m[3].matched == false);
41 
42     assert(m[4].first == s+11);
43     assert(m[4].second == s+11);
44     assert(m[4].matched == false);
45 }
46 
main()47 int main()
48 {
49     test();
50 }
51