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1 \r
2 #ifndef BOOST_MPL_JOINT_VIEW_HPP_INCLUDED\r
3 #define BOOST_MPL_JOINT_VIEW_HPP_INCLUDED\r
4 \r
5 // Copyright Aleksey Gurtovoy 2000-2004\r
6 //\r
7 // Distributed under the Boost Software License, Version 1.0. \r
8 // (See accompanying file LICENSE_1_0.txt or copy at \r
9 // http://www.boost.org/LICENSE_1_0.txt)\r
10 //\r
11 // See http://www.boost.org/libs/mpl for documentation.\r
12 \r
13 // $Id: joint_view.hpp 49267 2008-10-11 06:19:02Z agurtovoy $\r
14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $\r
15 // $Revision: 49267 $\r
16 \r
17 #include <boost/mpl/aux_/joint_iter.hpp>\r
18 #include <boost/mpl/plus.hpp>\r
19 #include <boost/mpl/size_fwd.hpp>\r
20 #include <boost/mpl/begin_end.hpp>\r
21 #include <boost/mpl/aux_/na_spec.hpp>\r
22 \r
23 namespace boost { namespace mpl {\r
24 \r
25 namespace aux {\r
26 struct joint_view_tag;\r
27 }\r
28 \r
29 template<>\r
30 struct size_impl< aux::joint_view_tag >\r
31 {\r
32     template < typename JointView > struct apply\r
33       : plus<\r
34             size<typename JointView::sequence1_>\r
35           , size<typename JointView::sequence2_>\r
36           >\r
37     {};\r
38 };\r
39 \r
40 template<\r
41       typename BOOST_MPL_AUX_NA_PARAM(Sequence1_)\r
42     , typename BOOST_MPL_AUX_NA_PARAM(Sequence2_)\r
43     >\r
44 struct joint_view\r
45 {\r
46     typedef typename mpl::begin<Sequence1_>::type   first1_;\r
47     typedef typename mpl::end<Sequence1_>::type     last1_;\r
48     typedef typename mpl::begin<Sequence2_>::type   first2_;\r
49     typedef typename mpl::end<Sequence2_>::type     last2_;\r
50 \r
51     // agurt, 25/may/03: for the 'size_traits' implementation above\r
52     typedef Sequence1_ sequence1_;\r
53     typedef Sequence2_ sequence2_;\r
54 \r
55     typedef joint_view type;\r
56     typedef aux::joint_view_tag tag;\r
57     typedef joint_iter<first1_,last1_,first2_>  begin;\r
58     typedef joint_iter<last1_,last1_,last2_>    end;\r
59 };\r
60 \r
61 BOOST_MPL_AUX_NA_SPEC(2, joint_view)\r
62 \r
63 }}\r
64 \r
65 #endif // BOOST_MPL_JOINT_VIEW_HPP_INCLUDED\r