#ifndef BOOST_MPL_MAP_AUX_CONTAINS_IMPL_HPP_INCLUDED

#define BOOST_MPL_MAP_AUX_CONTAINS_IMPL_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2003-2004

//

// 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)

//

// See http://www.boost.org/libs/mpl for documentation.

// $Source: /cvsroot/boost/boost/boost/mpl/map/aux_/contains_impl.hpp,v $

// $Date: 2004/09/02 15:41:00 $

// $Revision: 1.2 $

#include <boost/mpl/contains_fwd.hpp>

#include <boost/mpl/if.hpp>

#include <boost/mpl/map/aux_/at_impl.hpp>

#include <boost/mpl/map/aux_/tag.hpp>

#include <boost/type_traits/is_same.hpp>

namespace boost { namespace mpl {

template<>

struct contains_impl< aux::map_tag >

{

    template< typename Map, typename Pair > struct apply

        : is_same< 

              typename at_impl<aux::map_tag>::apply<

                  Map

                , typename Pair::first

                >::type

            , typename Pair::second

            >

    {

    };

};

}}

#endif // BOOST_MPL_MAP_AUX_CONTAINS_IMPL_HPP_INCLUDED