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Viewing changes to boost/boost/fusion/view/joint_view/joint_view.hpp

  • Committer: bigmuscle
  • Date: 2010-05-08 08:47:15 UTC
  • Revision ID: svn-v4:5fb55d53-692c-0410-a46a-e90ab66e00ee:trunk:497
removed old boost version

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boost/boost/fusion/view/joint_view/joint_view.hpp
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/*=============================================================================
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    Copyright (c) 2001-2006 Joel de Guzman
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    Distributed under the Boost Software License, Version 1.0. (See accompanying 
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    file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#if !defined(FUSION_JOINT_VIEW_07162005_0140)
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#define FUSION_JOINT_VIEW_07162005_0140
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#include <boost/fusion/support/detail/access.hpp>
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#include <boost/fusion/support/is_view.hpp>
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#include <boost/fusion/sequence/intrinsic/begin.hpp>
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#include <boost/fusion/sequence/intrinsic/end.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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#include <boost/fusion/view/joint_view/joint_view_iterator.hpp>
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#include <boost/fusion/view/joint_view/detail/begin_impl.hpp>
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#include <boost/fusion/view/joint_view/detail/end_impl.hpp>
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#include <boost/fusion/support/sequence_base.hpp>
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#include <boost/mpl/if.hpp>
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#include <boost/mpl/plus.hpp>
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#include <boost/mpl/bool.hpp>
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namespace boost { namespace fusion
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{
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    struct joint_view_tag;
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    struct forward_traversal_tag;
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    struct fusion_sequence_tag;
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    template <typename Sequence1, typename Sequence2>
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    struct joint_view : sequence_base<joint_view<Sequence1, Sequence2> >
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    {
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        typedef joint_view_tag fusion_tag;
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        typedef fusion_sequence_tag tag; // this gets picked up by MPL
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        typedef forward_traversal_tag category;
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        typedef mpl::true_ is_view;
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        typedef typename result_of::begin<Sequence1>::type first_type;
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        typedef typename result_of::end<Sequence1>::type last_type;
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        typedef typename result_of::begin<Sequence2>::type concat_type;
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        typedef typename result_of::end<Sequence2>::type concat_last_type;
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        typedef typename mpl::plus<result_of::size<Sequence1>, result_of::size<Sequence2> >::type size;
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        joint_view(Sequence1& seq1, Sequence2& seq2)
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            : seq1(seq1)
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            , seq2(seq2)
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        {}
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        first_type first() const { return fusion::begin(seq1); }
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        concat_type concat() const { return fusion::begin(seq2); }
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        concat_last_type concat_last() const { return fusion::end(seq2); }
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    private:
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        typename mpl::if_<traits::is_view<Sequence1>, Sequence1, Sequence1&>::type seq1;
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        typename mpl::if_<traits::is_view<Sequence2>, Sequence2, Sequence2&>::type seq2;
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    };
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}}
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#endif
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