| /*============================================================================= |
| Copyright (c) 2001-2006 Joel de Guzman |
| Copyright (c) 2005-2006 Dan Marsden |
| |
| Distributed under the Boost Software License, Version 1.0. (See accompanying |
| file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| ==============================================================================*/ |
| #if !defined(BOOST_FUSION_STD_PAIR_24122005_1744) |
| #define BOOST_FUSION_STD_PAIR_24122005_1744 |
| |
| #include <boost/fusion/support/tag_of_fwd.hpp> |
| #include <boost/fusion/adapted/struct.hpp> |
| #include <boost/mpl/int.hpp> |
| #include <boost/config/no_tr1/utility.hpp> |
| |
| namespace boost { namespace fusion |
| { |
| struct struct_tag; |
| |
| namespace traits |
| { |
| template <typename T1, typename T2> |
| #if defined(BOOST_NO_PARTIAL_SPECIALIZATION_IMPLICIT_DEFAULT_ARGS) |
| struct tag_of<std::pair<T1, T2>, void > |
| #else |
| struct tag_of<std::pair<T1, T2> > |
| #endif |
| { |
| typedef struct_tag type; |
| }; |
| } |
| |
| namespace extension |
| { |
| template <typename Struct, int N> |
| struct struct_member; |
| |
| template <typename Struct> |
| struct struct_size; |
| |
| template <typename T1, typename T2> |
| struct struct_member<std::pair<T1, T2>, 0> |
| { |
| typedef T1 type; |
| |
| static type& call(std::pair<T1, T2>& pair) |
| { |
| return pair.first; |
| } |
| }; |
| |
| template <typename T1, typename T2> |
| struct struct_member<std::pair<T1, T2>, 1> |
| { |
| typedef T2 type; |
| |
| static type& call(std::pair<T1, T2>& pair) |
| { |
| return pair.second; |
| } |
| }; |
| |
| template <typename T1, typename T2> |
| struct struct_size<std::pair<T1, T2> > : mpl::int_<2> |
| { |
| }; |
| } |
| }} |
| |
| #endif |