/*=============================================================================
    Copyright (c) 2001-2011 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(FUSION_CONVERT_IMPL_09232005_1340)
#define FUSION_CONVERT_IMPL_09232005_1340

#include <boost/fusion/support/config.hpp>
#include <boost/fusion/container/map/detail/cpp03/as_map.hpp>
#include <boost/fusion/container/map/detail/cpp03/map.hpp>
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>

namespace boost {
namespace fusion {
struct map_tag;

namespace extension {
template <typename T>
struct convert_impl;

template <>
struct convert_impl<map_tag>
{
    template <typename Sequence>
    struct apply
    {
        typedef typename
        detail::as_map<
        result_of::size<Sequence>::value
        , is_base_of<
        associative_tag
        , typename traits::category_of<Sequence>::type>::value
        >
        gen;
        typedef typename gen::
        template apply<typename result_of::begin<Sequence>::type>::type
        type;

        BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
        static type
        call(Sequence& seq)
        {
            return gen::call(fusion::begin(seq));
        }
    };
};
}
}
}

#endif
