libstdc++-v3/include/bits/stringfwd.h

   1 // String support -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
   4 // Free Software Foundation, Inc.
   5 //
   6 // This file is part of the GNU ISO C++ Library.  This library is free
   7 // software; you can redistribute it and/or modify it under the
   8 // terms of the GNU General Public License as published by the
   9 // Free Software Foundation; either version 2, or (at your option)
  10 // any later version.
  11
  12 // This library is distributed in the hope that it will be useful,
  13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 // GNU General Public License for more details.
  16
  17 // You should have received a copy of the GNU General Public License along
  18 // with this library; see the file COPYING.  If not, write to the Free
  19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
  20 // USA.
  21
  22 // As a special exception, you may use this file as part of a free software
  23 // library without restriction.  Specifically, if other files instantiate
  24 // templates or use macros or inline functions from this file, or you compile
  25 // this file and link it with other files to produce an executable, this
  26 // file does not by itself cause the resulting executable to be covered by
  27 // the GNU General Public License.  This exception does not however
  28 // invalidate any other reasons why the executable file might be covered by
  29 // the GNU General Public License.
  30
  31 /** @file stringfwd.h
  32  *  This is an internal header file, included by other library headers.
  33  *  You should not attempt to use it directly.
  34  */
  35
  36 //
  37 // ISO C++ 14882: 21 Strings library
  38 //
  39
  40 #ifndef _STRINGFWD_H
  41 #define _STRINGFWD_H 1
  42
  43 #pragma GCC system_header
  44
  45 #include <bits/c++config.h>
  46
  47 _GLIBCXX_BEGIN_NAMESPACE(std)
  48
  49   template<typename _Alloc>
  50     class allocator;
  51
  52   template<class _CharT>
  53     struct char_traits;
  54
  55   template<typename _CharT, typename _Traits = char_traits<_CharT>,
  56            typename _Alloc = allocator<_CharT> >
  57     class basic_string;
  58
  59   template<> struct char_traits<char>;
  60
  61   typedef basic_string<char>    string;
  62
  63 #ifdef _GLIBCXX_USE_WCHAR_T
  64   template<> struct char_traits<wchar_t>;
  65
  66   typedef basic_string<wchar_t> wstring;
  67 #endif
  68
  69 #if (defined(__GXX_EXPERIMENTAL_CXX0X__) \
  70      && defined(_GLIBCXX_USE_C99_STDINT_TR1))
  71
  72   template<> struct char_traits<char16_t>;
  73   template<> struct char_traits<char32_t>;
  74
  75   typedef basic_string<char16_t> u16string;
  76   typedef basic_string<char32_t> u32string;
  77
  78 #endif
  79
  80 _GLIBCXX_END_NAMESPACE
  81
  82 #endif  // _STRINGFWD_H