

#ifndef BOOST_MPL_VECTOR_AUX_EMPTY_HPP_INCLUDED

#define BOOST_MPL_VECTOR_AUX_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.



// $Source$

// $Date: 2004-09-02 11:41:37 -0400 (Thu, 02 Sep 2004) $

// $Revision: 24874 $



#include <boost/mpl/empty_fwd.hpp>

#include <boost/mpl/bool.hpp>

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

#include <boost/mpl/aux_/config/typeof.hpp>

#include <boost/mpl/aux_/config/ctps.hpp>

#include <boost/type_traits/is_same.hpp>



namespace boost { namespace mpl {



#if defined(BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES)



template<>

struct empty_impl< aux::vector_tag >

{

    template< typename Vector > struct apply

        : is_same<

              typename Vector::lower_bound_

            , typename Vector::upper_bound_

            >

    {

    };

};



#else



template<>

struct empty_impl< aux::vector_tag<0> >

{

    template< typename Vector > struct apply

        : true_

    {

    };

};



#if !defined(BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION)



template< long N >

struct empty_impl< aux::vector_tag<N> >

{

    template< typename Vector > struct apply

        : false_

    {

    };

};



#endif // BOOST_NO_TEMPLATE_PARTIAL_SPECIALIZATION



#endif // BOOST_MPL_CFG_TYPEOF_BASED_SEQUENCES



}}



#endif // BOOST_MPL_VECTOR_AUX_EMPTY_HPP_INCLUDED

