1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8
9 // <string>
10
11 // Test nested types and default template args:
12
13 // template<class charT, class traits = char_traits<charT>,
14 // class Allocator = allocator<charT> >
15 // {
16 // public:
17 // // types:
18 // typedef traits traits_type;
19 // typedef typename traits::char_type value_type;
20 // typedef Allocator allocator_type;
21 // typedef typename Allocator::size_type size_type;
22 // typedef typename Allocator::difference_type difference_type;
23 // typedef typename Allocator::reference reference;
24 // typedef typename Allocator::const_reference const_reference;
25 // typedef typename Allocator::pointer pointer;
26 // typedef typename Allocator::const_pointer const_pointer;
27 // typedef implementation-defined iterator; // See 23.1
28 // typedef implementation-defined const_iterator; // See 23.1
29 // typedef std::reverse_iterator<iterator> reverse_iterator;
30 // typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
31 // static const size_type npos = -1;
32 // };
33
34 #include <string>
35 #include <iterator>
36 #include <type_traits>
37
38 #include "test_macros.h"
39 #include "test_traits.h"
40 #include "test_allocator.h"
41 #include "min_allocator.h"
42
43 template <class Traits, class Allocator>
44 void
test()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
main(int,char **)74 int main(int, char**)
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 TEST_STD_VER >= 11
83 test<std::char_traits<char>, min_allocator<char> >();
84 #endif
85
86 return 0;
87 }
88