#ifndef BOOST_MPL_EMPTY_HPP_INCLUDED

#define BOOST_MPL_EMPTY_HPP_INCLUDED

// Copyright Aleksey Gurtovoy 2000-2004

//

// 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.

// $Id$

// $Date$

// $Revision$

#include <boost/mpl/empty_fwd.hpp>

#include <boost/mpl/sequence_tag.hpp>

#include <boost/mpl/aux_/empty_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(Sequence)

    >

struct empty

    : empty_impl< typename sequence_tag<Sequence>::type >

        ::template apply< Sequence >

{

    BOOST_MPL_AUX_LAMBDA_SUPPORT(1,empty,(Sequence))

};

BOOST_MPL_AUX_NA_SPEC(1, empty)

}}

#endif // BOOST_MPL_EMPTY_HPP_INCLUDED