

#ifndef BOOST_MPL_JOINT_VIEW_HPP_INCLUDED

#define BOOST_MPL_JOINT_VIEW_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: 2004-10-02 15:08:57 -0400 (Sat, 02 Oct 2004) $

// $Revision: 25528 $



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

#include <boost/mpl/plus.hpp>

#include <boost/mpl/size_fwd.hpp>

#include <boost/mpl/begin_end.hpp>

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



namespace boost { namespace mpl {



namespace aux {

struct joint_view_tag;

}



template<>

struct size_impl< aux::joint_view_tag >

{

    template < typename JointView > struct apply

      : plus<

            size<typename JointView::sequence1_>

          , size<typename JointView::sequence2_>

          >

    {};

};



template<

      typename BOOST_MPL_AUX_NA_PARAM(Sequence1_)

    , typename BOOST_MPL_AUX_NA_PARAM(Sequence2_)

    >

struct joint_view

{

    typedef typename mpl::begin<Sequence1_>::type   first1_;

    typedef typename mpl::end<Sequence1_>::type     last1_;

    typedef typename mpl::begin<Sequence2_>::type   first2_;

    typedef typename mpl::end<Sequence2_>::type     last2_;



    // agurt, 25/may/03: for the 'size_traits' implementation above

    typedef Sequence1_ sequence1_;

    typedef Sequence2_ sequence2_;



    typedef joint_view type;

    typedef aux::joint_view_tag tag;

    typedef joint_iter<first1_,last1_,first2_>  begin;

    typedef joint_iter<last1_,last1_,last2_>    end;

};



BOOST_MPL_AUX_NA_SPEC(2, joint_view)



}}



#endif // BOOST_MPL_JOINT_VIEW_HPP_INCLUDED

