mirror of
https://github.com/boostorg/fusion.git
synced 2025-07-15 21:32:22 +02:00
6d462cbd63
Changed <utility> to <boost/config/no_tr1/utility.hpp> in order to prevent cyclic dependencies between Fusion Tuples and TR1. [SVN r44692]
71 lines
1.8 KiB
C++
71 lines
1.8 KiB
C++
/*=============================================================================
|
|
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
|