Subversion Repositories Kolibri OS

Rev

Go to most recent revision | Blame | Last modification | View Log | RSS feed

  1. // TR1 utility -*- C++ -*-
  2.  
  3. // Copyright (C) 2004-2013 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 3, 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. // Under Section 7 of GPL version 3, you are granted additional
  17. // permissions described in the GCC Runtime Library Exception, version
  18. // 3.1, as published by the Free Software Foundation.
  19.  
  20. // You should have received a copy of the GNU General Public License and
  21. // a copy of the GCC Runtime Library Exception along with this program;
  22. // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23. // <http://www.gnu.org/licenses/>.
  24.  
  25. /** @file tr1/utility
  26.  *  This is a TR1 C++ Library header.
  27.  */
  28.  
  29. #ifndef _GLIBCXX_TR1_UTILITY
  30. #define _GLIBCXX_TR1_UTILITY 1
  31.  
  32. #pragma GCC system_header
  33.  
  34. #include <bits/c++config.h>
  35. #include <bits/stl_relops.h>
  36. #include <bits/stl_pair.h>
  37.  
  38. namespace std _GLIBCXX_VISIBILITY(default)
  39. {
  40. namespace tr1
  41. {
  42. _GLIBCXX_BEGIN_NAMESPACE_VERSION
  43.  
  44.   template<class _Tp>
  45.     class tuple_size;
  46.  
  47.   template<int _Int, class _Tp>
  48.     class tuple_element;
  49.  
  50.    // Various functions which give std::pair a tuple-like interface.
  51.   template<class _Tp1, class _Tp2>
  52.     struct tuple_size<std::pair<_Tp1, _Tp2> >
  53.     { static const int value = 2; };
  54.  
  55.   template<class _Tp1, class _Tp2>
  56.     const int
  57.     tuple_size<std::pair<_Tp1, _Tp2> >::value;
  58.  
  59.   template<class _Tp1, class _Tp2>
  60.     struct tuple_element<0, std::pair<_Tp1, _Tp2> >
  61.     { typedef _Tp1 type; };
  62.  
  63.   template<class _Tp1, class _Tp2>
  64.     struct tuple_element<1, std::pair<_Tp1, _Tp2> >
  65.     { typedef _Tp2 type; };
  66.  
  67.   template<int _Int>
  68.     struct __pair_get;
  69.  
  70.   template<>
  71.     struct __pair_get<0>
  72.     {
  73.       template<typename _Tp1, typename _Tp2>
  74.       static _Tp1& __get(std::pair<_Tp1, _Tp2>& __pair)
  75.       { return __pair.first; }
  76.  
  77.       template<typename _Tp1, typename _Tp2>
  78.       static const _Tp1& __const_get(const std::pair<_Tp1, _Tp2>& __pair)
  79.       { return __pair.first; }
  80.     };
  81.  
  82.   template<>
  83.     struct __pair_get<1>
  84.     {
  85.       template<typename _Tp1, typename _Tp2>
  86.       static _Tp2& __get(std::pair<_Tp1, _Tp2>& __pair)
  87.       { return __pair.second; }
  88.  
  89.       template<typename _Tp1, typename _Tp2>
  90.       static const _Tp2& __const_get(const std::pair<_Tp1, _Tp2>& __pair)
  91.       { return __pair.second; }
  92.     };
  93.  
  94.   template<int _Int, class _Tp1, class _Tp2>
  95.     inline typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
  96.     get(std::pair<_Tp1, _Tp2>& __in)
  97.     { return __pair_get<_Int>::__get(__in); }
  98.  
  99.   template<int _Int, class _Tp1, class _Tp2>
  100.     inline const typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
  101.     get(const std::pair<_Tp1, _Tp2>& __in)
  102.     { return __pair_get<_Int>::__const_get(__in); }
  103.  
  104. _GLIBCXX_END_NAMESPACE_VERSION
  105. }
  106. }
  107.  
  108. #endif // _GLIBCXX_TR1_UTILITY
  109.