#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: /cvsroot/boost/boost/boost/mpl/joint_view.hpp,v $

 // $Date: 2004/10/02 19:08:57 $

 // $Revision: 1.8 $

 #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