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// <iterator>
11
12// reverse_iterator
13
14// Test nested types and data member:
15
16// template <BidirectionalIterator Iter>
17// class reverse_iterator {
18// protected:
19//   Iter current;
20// public:
21//   iterator<typename iterator_traits<Iterator>::iterator_category,
22//   typename iterator_traits<Iterator>::value_type,
23//   typename iterator_traits<Iterator>::difference_type,
24//   typename iterator_traits<Iterator>::pointer,
25//   typename iterator_traits<Iterator>::reference> {
26// };
27
28#include <iterator>
29#include <type_traits>
30
31#include "test_iterators.h"
32
33template <class It>
34struct find_current
35    : private std::reverse_iterator<It>
36{
37    void test() {++(this->current);}
38};
39
40template <class It>
41void
42test()
43{
44    typedef std::reverse_iterator<It> R;
45    typedef std::iterator_traits<It> T;
46    find_current<It> q;
47    q.test();
48    static_assert((std::is_same<typename R::iterator_type, It>::value), "");
49    static_assert((std::is_same<typename R::value_type, typename T::value_type>::value), "");
50    static_assert((std::is_same<typename R::difference_type, typename T::difference_type>::value), "");
51    static_assert((std::is_same<typename R::reference, typename T::reference>::value), "");
52    static_assert((std::is_same<typename R::pointer, typename std::iterator_traits<It>::pointer>::value), "");
53    static_assert((std::is_same<typename R::iterator_category, typename T::iterator_category>::value), "");
54}
55
56int main()
57{
58    test<bidirectional_iterator<char*> >();
59    test<random_access_iterator<char*> >();
60    test<char*>();
61}
62