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105 lines
2.6 KiB
105 lines
2.6 KiB
3 years ago
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// <string> Forward declarations -*- C++ -*-
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// Copyright (C) 2001-2021 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/stringfwd.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{string}
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*/
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//
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// ISO C++ 14882: 21 Strings library
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//
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#ifndef _STRINGFWD_H
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#define _STRINGFWD_H 1
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#pragma GCC system_header
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#include <bits/c++config.h>
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#include <bits/memoryfwd.h>
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namespace std _GLIBCXX_VISIBILITY(default)
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{
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_GLIBCXX_BEGIN_NAMESPACE_VERSION
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/**
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* @defgroup strings Strings
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*
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* @{
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*/
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template<class _CharT>
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struct char_traits;
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template<> struct char_traits<char>;
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#ifdef _GLIBCXX_USE_WCHAR_T
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template<> struct char_traits<wchar_t>;
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#endif
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#ifdef _GLIBCXX_USE_CHAR8_T
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template<> struct char_traits<char8_t>;
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#endif
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#if __cplusplus >= 201103L
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template<> struct char_traits<char16_t>;
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template<> struct char_traits<char32_t>;
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#endif
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_GLIBCXX_BEGIN_NAMESPACE_CXX11
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template<typename _CharT, typename _Traits = char_traits<_CharT>,
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typename _Alloc = allocator<_CharT> >
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class basic_string;
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_GLIBCXX_END_NAMESPACE_CXX11
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/// A string of @c char
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typedef basic_string<char> string;
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#ifdef _GLIBCXX_USE_WCHAR_T
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/// A string of @c wchar_t
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typedef basic_string<wchar_t> wstring;
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#endif
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#ifdef _GLIBCXX_USE_CHAR8_T
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/// A string of @c char8_t
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typedef basic_string<char8_t> u8string;
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#endif
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#if __cplusplus >= 201103L
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/// A string of @c char16_t
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typedef basic_string<char16_t> u16string;
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/// A string of @c char32_t
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typedef basic_string<char32_t> u32string;
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#endif
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/** @} */
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_GLIBCXX_END_NAMESPACE_VERSION
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} // namespace std
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#endif // _STRINGFWD_H
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