1 /*=============================================================================
2     Copyright (c) 2011 Eric Niebler
3 
4     Distributed under the Boost Software License, Version 1.0. (See accompanying
5     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
6 ==============================================================================*/
7 
8 #if !defined(BOOST_FUSION_SINGLE_VIEW_ADVANCE_IMPL_JUL_07_2011_1348PM)
9 #define BOOST_FUSION_SINGLE_VIEW_ADVANCE_IMPL_JUL_07_2011_1348PM
10 
11 #include <boost/fusion/support/config.hpp>
12 #include <boost/mpl/plus.hpp>
13 
14 namespace boost { namespace fusion
15 {
16     struct single_view_iterator_tag;
17 
18     template <typename SingleView, typename Pos>
19     struct single_view_iterator;
20 
21     namespace extension
22     {
23         template<typename Tag>
24         struct advance_impl;
25 
26         template<>
27         struct advance_impl<single_view_iterator_tag>
28         {
29             template<typename Iterator, typename Dist>
30             struct apply
31             {
32                 typedef single_view_iterator<
33                     typename Iterator::single_view_type,
34                     typename mpl::plus<typename Iterator::position, Dist>::type>
35                 type;
36 
37                 BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
38                 static type
callboost::fusion::extension::advance_impl::apply39                 call(Iterator const& i)
40                 {
41                     return type(i.view);
42                 }
43             };
44         };
45     }
46 
47 }}
48 
49 #endif
50