// 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_TR1template<class _Tp>class tuple_size;#ifdef _GLIBCXX_INCLUDE_AS_CXX0Xtemplate<std::size_t _Int, class _Tp>#elsetemplate<int _Int, class _Tp>#endifclass 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; };#endiftemplate<class _Tp1, class _Tp2>#ifdef _GLIBCXX_INCLUDE_AS_CXX0Xconst std::size_t#elseconst int#endiftuple_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_CXX0Xtemplate<std::size_t _Int>#elsetemplate<int _Int>#endifstruct __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_CXX0Xtemplate<std::size_t _Int, class _Tp1, class _Tp2>#elsetemplate<int _Int, class _Tp1, class _Tp2>#endifinline 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_CXX0Xtemplate<std::size_t _Int, class _Tp1, class _Tp2>#elsetemplate<int _Int, class _Tp1, class _Tp2>#endifinline 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}