1 | // <string> Forward declarations -*- C++ -*- |
2 | |
3 | // Copyright (C) 2001-2019 Free Software Foundation, Inc. |
4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free |
6 | // software; you can redistribute it and/or modify it under the |
7 | // terms of the GNU General Public License as published by the |
8 | // Free Software Foundation; either version 3, or (at your option) |
9 | // any later version. |
10 | |
11 | // This library is distributed in the hope that it will be useful, |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 | // GNU General Public License for more details. |
15 | |
16 | // Under Section 7 of GPL version 3, you are granted additional |
17 | // permissions described in the GCC Runtime Library Exception, version |
18 | // 3.1, as published by the Free Software Foundation. |
19 | |
20 | // You should have received a copy of the GNU General Public License and |
21 | // a copy of the GCC Runtime Library Exception along with this program; |
22 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
23 | // <http://www.gnu.org/licenses/>. |
24 | |
25 | /** @file bits/stringfwd.h |
26 | * This is an internal header file, included by other library headers. |
27 | * Do not attempt to use it directly. @headername{string} |
28 | */ |
29 | |
30 | // |
31 | // ISO C++ 14882: 21 Strings library |
32 | // |
33 | |
34 | #ifndef _STRINGFWD_H |
35 | #define _STRINGFWD_H 1 |
36 | |
37 | #pragma GCC system_header |
38 | |
39 | #include <bits/c++config.h> |
40 | #include <bits/memoryfwd.h> |
41 | |
42 | namespace std _GLIBCXX_VISIBILITY(default) |
43 | { |
44 | _GLIBCXX_BEGIN_NAMESPACE_VERSION |
45 | |
46 | /** |
47 | * @defgroup strings Strings |
48 | * |
49 | * @{ |
50 | */ |
51 | |
52 | template<class _CharT> |
53 | struct char_traits; |
54 | |
55 | template<> struct char_traits<char>; |
56 | |
57 | #ifdef _GLIBCXX_USE_WCHAR_T |
58 | template<> struct char_traits<wchar_t>; |
59 | #endif |
60 | |
61 | #ifdef _GLIBCXX_USE_CHAR8_T |
62 | template<> struct char_traits<char8_t>; |
63 | #endif |
64 | |
65 | #if __cplusplus >= 201103L |
66 | template<> struct char_traits<char16_t>; |
67 | template<> struct char_traits<char32_t>; |
68 | #endif |
69 | |
70 | _GLIBCXX_BEGIN_NAMESPACE_CXX11 |
71 | |
72 | template<typename _CharT, typename _Traits = char_traits<_CharT>, |
73 | typename _Alloc = allocator<_CharT> > |
74 | class basic_string; |
75 | |
76 | _GLIBCXX_END_NAMESPACE_CXX11 |
77 | |
78 | /// A string of @c char |
79 | typedef basic_string<char> string; |
80 | |
81 | #ifdef _GLIBCXX_USE_WCHAR_T |
82 | /// A string of @c wchar_t |
83 | typedef basic_string<wchar_t> wstring; |
84 | #endif |
85 | |
86 | #ifdef _GLIBCXX_USE_CHAR8_T |
87 | /// A string of @c char8_t |
88 | typedef basic_string<char8_t> u8string; |
89 | #endif |
90 | |
91 | #if __cplusplus >= 201103L |
92 | /// A string of @c char16_t |
93 | typedef basic_string<char16_t> u16string; |
94 | |
95 | /// A string of @c char32_t |
96 | typedef basic_string<char32_t> u32string; |
97 | #endif |
98 | |
99 | /** @} */ |
100 | |
101 | _GLIBCXX_END_NAMESPACE_VERSION |
102 | } // namespace std |
103 | |
104 | #endif // _STRINGFWD_H |
105 | |