stringfwd.h

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00001 // String support -*- C++ -*-
00002 
00003 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
00004 // 2010
00005 // Free Software Foundation, Inc.
00006 //
00007 // This file is part of the GNU ISO C++ Library.  This library is free
00008 // software; you can redistribute it and/or modify it under the
00009 // terms of the GNU General Public License as published by the
00010 // Free Software Foundation; either version 3, or (at your option)
00011 // any later version.
00012 
00013 // This library is distributed in the hope that it will be useful,
00014 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00015 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00016 // GNU General Public License for more details.
00017 
00018 // Under Section 7 of GPL version 3, you are granted additional
00019 // permissions described in the GCC Runtime Library Exception, version
00020 // 3.1, as published by the Free Software Foundation.
00021 
00022 // You should have received a copy of the GNU General Public License and
00023 // a copy of the GCC Runtime Library Exception along with this program;
00024 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
00025 // <http://www.gnu.org/licenses/>.
00026 
00027 /** @file stringfwd.h
00028  *  This is an internal header file, included by other library headers.
00029  *  You should not attempt to use it directly.
00030  */
00031 
00032 //
00033 // ISO C++ 14882: 21 Strings library
00034 //
00035 
00036 #ifndef _STRINGFWD_H
00037 #define _STRINGFWD_H 1
00038 
00039 #pragma GCC system_header
00040 
00041 #include <bits/c++config.h>
00042 
00043 _GLIBCXX_BEGIN_NAMESPACE(std)
00044 
00045   template<typename _Alloc>
00046     class allocator;
00047 
00048   /**
00049    *  @defgroup strings Strings
00050    *
00051    *  @{
00052   */
00053 
00054   template<class _CharT>
00055     struct char_traits;
00056 
00057   template<typename _CharT, typename _Traits = char_traits<_CharT>,
00058            typename _Alloc = allocator<_CharT> >
00059     class basic_string;
00060 
00061   template<> struct char_traits<char>;
00062 
00063   typedef basic_string<char>    string;   ///< A string of @c char
00064 
00065 #ifdef _GLIBCXX_USE_WCHAR_T
00066   template<> struct char_traits<wchar_t>;
00067 
00068   typedef basic_string<wchar_t> wstring;   ///< A string of @c wchar_t
00069 #endif
00070 
00071 #if (defined(__GXX_EXPERIMENTAL_CXX0X__) \
00072      && defined(_GLIBCXX_USE_C99_STDINT_TR1))
00073 
00074   template<> struct char_traits<char16_t>;
00075   template<> struct char_traits<char32_t>;
00076 
00077   typedef basic_string<char16_t> u16string; ///< A string of @c char16_t
00078   typedef basic_string<char32_t> u32string; ///< A string of @c char32_t
00079 
00080 #endif
00081   /** @}  */
00082 
00083 _GLIBCXX_END_NAMESPACE
00084 
00085 #endif  // _STRINGFWD_H