/*=============================================================================
    Copyright (c) 2001-2013 Joel de Guzman

    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_MAP_DETAIL_VALUE_AT_IMPL_02042013_0821)
#define BOOST_FUSION_MAP_DETAIL_VALUE_AT_IMPL_02042013_0821

#include <boost/fusion/support/config.hpp>
#include <boost/mpl/at.hpp>
#include <boost/utility/declval.hpp>

namespace boost {
namespace fusion {
struct map_tag;

namespace extension {
template <typename Tag>
struct value_at_impl;

template <>
struct value_at_impl<map_tag>
{
    template <typename Sequence, typename N>
    struct apply
    {
        typedef mpl::int_<N::value> index;
        typedef
        decltype(boost::declval<Sequence>().get_val(index()))
        type;
    };
};
}
}
}

#endif
