convert_impl.hpp

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/*=============================================================================
    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(FUSION_CONVERT_IMPL_09232005_1341)
#define FUSION_CONVERT_IMPL_09232005_1341

#include <boost/fusion/container/set/detail/as_set.hpp>
#include <boost/fusion/container/set/set.hpp>
#include <boost/fusion/sequence/intrinsic/begin.hpp>
#include <boost/fusion/sequence/intrinsic/size.hpp>

namespace boost { namespace fusion
{
    struct set_tag;

    namespace extension
    {
        template <typename T>
        struct convert_impl;

        template <>
        struct convert_impl<set_tag>
        {
            template <typename Sequence>
            struct apply
            {
                typedef typename detail::as_set<result_of::size<Sequence>::value> gen;
                typedef typename gen::
                    template apply<typename result_of::begin<Sequence>::type>::type
                type;

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

#endif