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
30int 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