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

   1 // String support -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002 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 2, 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 // You should have received a copy of the GNU General Public License along
  17 // with this library; see the file COPYING.  If not, write to the Free
  18 // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
  19 // USA.
  20
  21 // As a special exception, you may use this file as part of a free software
  22 // library without restriction.  Specifically, if other files instantiate
  23 // templates or use macros or inline functions from this file, or you compile
  24 // this file and link it with other files to produce an executable, this
  25 // file does not by itself cause the resulting executable to be covered by
  26 // the GNU General Public License.  This exception does not however
  27 // invalidate any other reasons why the executable file might be covered by
  28 // the GNU General Public License.
  29
  30 //
  31 // ISO C++ 14882: 21 Strings library
  32 //
  33
  34 /** @file stringfwd.h
  35  *  This is an internal header file, included by other library headers.
  36  *  You should not attempt to use it directly.
  37  */
  38
  39 #ifndef _STRINGFWD_H
  40 #define _STRINGFWD_H 1
  41
  42 #pragma GCC system_header
  43
  44 #include <bits/c++config.h>
  45
  46 namespace std
  47 {
  48   template<typename _Alloc>
  49     class allocator;
  50
  51   template<class _CharT>
  52     struct char_traits;
  53
  54   template<typename _CharT, typename _Traits = char_traits<_CharT>,
  55            typename _Alloc = allocator<_CharT> >
  56     class basic_string;
  57
  58   template<> struct char_traits<char>;
  59
  60   typedef basic_string<char>    string;
  61
  62 #ifdef _GLIBCXX_USE_WCHAR_T
  63   template<> struct char_traits<wchar_t>;
  64
  65   typedef basic_string<wchar_t> wstring;
  66 #endif
  67 } // namespace std
  68
  69 #endif  // _STRINGFWD_H