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

   1 // String support -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
   4 // 2010
   5 // Free Software Foundation, Inc.
   6 //
   7 // This file is part of the GNU ISO C++ Library.  This library is free
   8 // software; you can redistribute it and/or modify it under the
   9 // terms of the GNU General Public License as published by the
  10 // Free Software Foundation; either version 3, or (at your option)
  11 // any later version.
  12
  13 // This library is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // Under Section 7 of GPL version 3, you are granted additional
  19 // permissions described in the GCC Runtime Library Exception, version
  20 // 3.1, as published by the Free Software Foundation.
  21
  22 // You should have received a copy of the GNU General Public License and
  23 // a copy of the GCC Runtime Library Exception along with this program;
  24 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  25 // <http://www.gnu.org/licenses/>.
  26
  27 /** @file stringfwd.h
  28  *  This is an internal header file, included by other library headers.
  29  *  You should not attempt to use it directly.
  30  */
  31
  32 //
  33 // ISO C++ 14882: 21 Strings library
  34 //
  35
  36 #ifndef _STRINGFWD_H
  37 #define _STRINGFWD_H 1
  38
  39 #pragma GCC system_header
  40
  41 #include <bits/c++config.h>
  42
  43 _GLIBCXX_BEGIN_NAMESPACE(std)
  44
  45   template<typename _Alloc>
  46     class allocator;
  47
  48   /**
  49    *  @defgroup strings Strings
  50    *
  51    *  @{
  52   */
  53
  54   template<class _CharT>
  55     struct char_traits;
  56
  57   template<typename _CharT, typename _Traits = char_traits<_CharT>,
  58            typename _Alloc = allocator<_CharT> >
  59     class basic_string;
  60
  61   template<> struct char_traits<char>;
  62
  63   typedef basic_string<char>    string;   ///< A string of @c char
  64
  65 #ifdef _GLIBCXX_USE_WCHAR_T
  66   template<> struct char_traits<wchar_t>;
  67
  68   typedef basic_string<wchar_t> wstring;   ///< A string of @c wchar_t
  69 #endif
  70
  71 #if (defined(__GXX_EXPERIMENTAL_CXX0X__) \
  72      && defined(_GLIBCXX_USE_C99_STDINT_TR1))
  73
  74   template<> struct char_traits<char16_t>;
  75   template<> struct char_traits<char32_t>;
  76
  77   typedef basic_string<char16_t> u16string; ///< A string of @c char16_t
  78   typedef basic_string<char32_t> u32string; ///< A string of @c char32_t
  79
  80 #endif
  81   /** @}  */
  82
  83 _GLIBCXX_END_NAMESPACE
  84
  85 #endif  // _STRINGFWD_H