121 lines
3.5 KiB
C++
121 lines
3.5 KiB
C++
// TR1 utility -*- C++ -*-
|
|
|
|
// Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file tr1_impl/utility
|
|
* This is an internal header file, included by other library headers.
|
|
* You should not attempt to use it directly.
|
|
*/
|
|
|
|
namespace std
|
|
{
|
|
_GLIBCXX_BEGIN_NAMESPACE_TR1
|
|
|
|
template<class _Tp>
|
|
class tuple_size;
|
|
|
|
#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
|
|
template<std::size_t _Int, class _Tp>
|
|
#else
|
|
template<int _Int, class _Tp>
|
|
#endif
|
|
class tuple_element;
|
|
|
|
// Various functions which give std::pair a tuple-like interface.
|
|
template<class _Tp1, class _Tp2>
|
|
struct tuple_size<std::pair<_Tp1, _Tp2> >
|
|
#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
|
|
{ static const std::size_t value = 2; };
|
|
#else
|
|
{ static const int value = 2; };
|
|
#endif
|
|
|
|
template<class _Tp1, class _Tp2>
|
|
#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
|
|
const std::size_t
|
|
#else
|
|
const int
|
|
#endif
|
|
tuple_size<std::pair<_Tp1, _Tp2> >::value;
|
|
|
|
template<class _Tp1, class _Tp2>
|
|
struct tuple_element<0, std::pair<_Tp1, _Tp2> >
|
|
{ typedef _Tp1 type; };
|
|
|
|
template<class _Tp1, class _Tp2>
|
|
struct tuple_element<1, std::pair<_Tp1, _Tp2> >
|
|
{ typedef _Tp2 type; };
|
|
|
|
#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
|
|
template<std::size_t _Int>
|
|
#else
|
|
template<int _Int>
|
|
#endif
|
|
struct __pair_get;
|
|
|
|
template<>
|
|
struct __pair_get<0>
|
|
{
|
|
template<typename _Tp1, typename _Tp2>
|
|
static _Tp1& __get(std::pair<_Tp1, _Tp2>& __pair)
|
|
{ return __pair.first; }
|
|
|
|
template<typename _Tp1, typename _Tp2>
|
|
static const _Tp1& __const_get(const std::pair<_Tp1, _Tp2>& __pair)
|
|
{ return __pair.first; }
|
|
};
|
|
|
|
template<>
|
|
struct __pair_get<1>
|
|
{
|
|
template<typename _Tp1, typename _Tp2>
|
|
static _Tp2& __get(std::pair<_Tp1, _Tp2>& __pair)
|
|
{ return __pair.second; }
|
|
|
|
template<typename _Tp1, typename _Tp2>
|
|
static const _Tp2& __const_get(const std::pair<_Tp1, _Tp2>& __pair)
|
|
{ return __pair.second; }
|
|
};
|
|
|
|
#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
|
|
template<std::size_t _Int, class _Tp1, class _Tp2>
|
|
#else
|
|
template<int _Int, class _Tp1, class _Tp2>
|
|
#endif
|
|
inline typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
|
|
get(std::pair<_Tp1, _Tp2>& __in)
|
|
{ return __pair_get<_Int>::__get(__in); }
|
|
|
|
#ifdef _GLIBCXX_INCLUDE_AS_CXX0X
|
|
template<std::size_t _Int, class _Tp1, class _Tp2>
|
|
#else
|
|
template<int _Int, class _Tp1, class _Tp2>
|
|
#endif
|
|
inline const typename tuple_element<_Int, std::pair<_Tp1, _Tp2> >::type&
|
|
get(const std::pair<_Tp1, _Tp2>& __in)
|
|
{ return __pair_get<_Int>::__const_get(__in); }
|
|
|
|
_GLIBCXX_END_NAMESPACE_TR1
|
|
}
|
|
|