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 // <string>
11 
12 // Test nested types and default template args:
13 
14 // template<class charT, class traits = char_traits<charT>,
15 //   class Allocator = allocator<charT> >
16 // {
17 // public:
18 //     // types:
19 //     typedef traits traits_type;
20 //     typedef typename traits::char_type value_type;
21 //     typedef Allocator allocator_type;
22 //     typedef typename Allocator::size_type size_type;
23 //     typedef typename Allocator::difference_type difference_type;
24 //     typedef typename Allocator::reference reference;
25 //     typedef typename Allocator::const_reference const_reference;
26 //     typedef typename Allocator::pointer pointer;
27 //     typedef typename Allocator::const_pointer const_pointer;
28 //     typedef implementation-defined iterator; // See 23.1
29 //     typedef implementation-defined const_iterator; // See 23.1
30 //     typedef std::reverse_iterator<iterator> reverse_iterator;
31 //     typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
32 //     static const size_type npos = -1;
33 // };
34 
35 #include <string>
36 #include <iterator>
37 #include <type_traits>
38 
39 #include "test_traits.h"
40 #include "test_allocator.h"
41 #include "min_allocator.h"
42 
43 template <class Traits, class Allocator>
44 void
45 test()
46 {
47     typedef std::basic_string<typename Traits::char_type, Traits, Allocator> S;
48 
49     static_assert((std::is_same<typename S::traits_type, Traits>::value), "");
50     static_assert((std::is_same<typename S::value_type, typename Traits::char_type>::value), "");
51     static_assert((std::is_same<typename S::value_type, typename Allocator::value_type>::value), "");
52     static_assert((std::is_same<typename S::allocator_type, Allocator>::value), "");
53     static_assert((std::is_same<typename S::size_type, typename std::allocator_traits<Allocator>::size_type>::value), "");
54     static_assert((std::is_same<typename S::difference_type, typename std::allocator_traits<Allocator>::difference_type>::value), "");
55     static_assert((std::is_same<typename S::reference, typename S::value_type&>::value), "");
56     static_assert((std::is_same<typename S::const_reference, const typename S::value_type&>::value), "");
57     static_assert((std::is_same<typename S::pointer, typename std::allocator_traits<Allocator>::pointer>::value), "");
58     static_assert((std::is_same<typename S::const_pointer, typename std::allocator_traits<Allocator>::const_pointer>::value), "");
59     static_assert((std::is_same<
60         typename std::iterator_traits<typename S::iterator>::iterator_category,
61         std::random_access_iterator_tag>::value), "");
62     static_assert((std::is_same<
63         typename std::iterator_traits<typename S::const_iterator>::iterator_category,
64         std::random_access_iterator_tag>::value), "");
65     static_assert((std::is_same<
66         typename S::reverse_iterator,
67         std::reverse_iterator<typename S::iterator> >::value), "");
68     static_assert((std::is_same<
69         typename S::const_reverse_iterator,
70         std::reverse_iterator<typename S::const_iterator> >::value), "");
71     static_assert(S::npos == -1, "");
72 }
73 
74 int main()
75 {
76     test<test_traits<char>, test_allocator<char> >();
77     test<std::char_traits<wchar_t>, std::allocator<wchar_t> >();
78     static_assert((std::is_same<std::basic_string<char>::traits_type,
79                                 std::char_traits<char> >::value), "");
80     static_assert((std::is_same<std::basic_string<char>::allocator_type,
81                                 std::allocator<char> >::value), "");
82 #if __cplusplus >= 201103L
83     test<std::char_traits<char>, min_allocator<char> >();
84 #endif
85 }
86