#ifndef BOOST_MPL_HAS_KEY_HPP_INCLUDED

#define BOOST_MPL_HAS_KEY_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2003-2004

// Copyright David Abrahams 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/has_key.hpp,v $

// $Date: 2004/09/02 15:40:41 $

// $Revision: 1.3 $

#include <boost/mpl/has_key_fwd.hpp>

#include <boost/mpl/sequence_tag.hpp>

#include <boost/mpl/aux_/has_key_impl.hpp>

#include <boost/mpl/aux_/na_spec.hpp>

#include <boost/mpl/aux_/lambda_support.hpp>

namespace boost { namespace mpl {

template<

      typename BOOST_MPL_AUX_NA_PARAM(AssociativeSequence)

    , typename BOOST_MPL_AUX_NA_PARAM(Key)

    >

struct has_key

    : has_key_impl< typename sequence_tag<AssociativeSequence>::type >

        ::template apply<AssociativeSequence,Key>

{

    BOOST_MPL_AUX_LAMBDA_SUPPORT(2,has_key,(AssociativeSequence,Key))

};

BOOST_MPL_AUX_NA_SPEC(2, has_key)

}}

#endif // BOOST_MPL_HAS_KEY_HPP_INCLUDED