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