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 // template <class BidirectionalIterator>
13 // class sub_match
14 //     : public pair<BidirectionalIterator, BidirectionalIterator>
15 // {
16 // public:
17 //     typedef BidirectionalIterator                               iterator;
18 //     typedef typename iterator_traits<iterator>::value_type      value_type;
19 //     typedef typename iterator_traits<iterator>::difference_type difference_type;
20 //     typedef basic_string<value_type>                            string_type;
21 //
22 //     bool matched;
23 //     ...
24 // };
25 
26 #include <regex>
27 #include <type_traits>
28 #include <cassert>
29 
30 int main()
31 {
32     {
33         typedef std::sub_match<char*> SM;
34         static_assert((std::is_same<SM::iterator, char*>::value), "");
35         static_assert((std::is_same<SM::value_type, char>::value), "");
36         static_assert((std::is_same<SM::difference_type, std::ptrdiff_t>::value), "");
37         static_assert((std::is_same<SM::string_type, std::string>::value), "");
38         static_assert((std::is_convertible<SM*, std::pair<char*, char*>*>::value), "");
39 
40         SM sm;
41         sm.first = nullptr;
42         sm.second = nullptr;
43         sm.matched = false;
44     }
45     {
46         typedef std::sub_match<wchar_t*> SM;
47         static_assert((std::is_same<SM::iterator, wchar_t*>::value), "");
48         static_assert((std::is_same<SM::value_type, wchar_t>::value), "");
49         static_assert((std::is_same<SM::difference_type, std::ptrdiff_t>::value), "");
50         static_assert((std::is_same<SM::string_type, std::wstring>::value), "");
51         static_assert((std::is_convertible<SM*, std::pair<wchar_t*, wchar_t*>*>::value), "");
52 
53         SM sm;
54         sm.first = nullptr;
55         sm.second = nullptr;
56         sm.matched = false;
57     }
58     {
59         static_assert((std::is_same<std::csub_match, std::sub_match<const char*> >::value), "");
60         static_assert((std::is_same<std::wcsub_match, std::sub_match<const wchar_t*> >::value), "");
61         static_assert((std::is_same<std::ssub_match, std::sub_match<std::string::const_iterator> >::value), "");
62         static_assert((std::is_same<std::wssub_match, std::sub_match<std::wstring::const_iterator> >::value), "");
63     }
64 }
65