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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 | |
39 | call(Iterator const& i) | |
40 | { | |
41 | return type(i.view); | |
42 | } | |
43 | }; | |
44 | }; | |
45 | } | |
46 | ||
47 | }} | |
48 | ||
49 | #endif |