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 | #if !defined(BOOST_FUSION_SEGMENTED_END_IMPL_HPP_INCLUDED) |
8 | #define BOOST_FUSION_SEGMENTED_END_IMPL_HPP_INCLUDED |
9 | |
10 | #include <boost/fusion/support/config.hpp> |
11 | #include <boost/mpl/assert.hpp> |
12 | #include <boost/type_traits/add_const.hpp> |
13 | #include <boost/type_traits/remove_reference.hpp> |
14 | #include <boost/fusion/sequence/intrinsic_fwd.hpp> |
15 | #include <boost/fusion/container/list/cons_fwd.hpp> |
16 | #include <boost/fusion/support/is_segmented.hpp> |
17 | |
18 | namespace boost { namespace fusion |
19 | { |
20 | template <typename First, typename Last> |
21 | struct iterator_range; |
22 | }} |
23 | |
24 | namespace boost { namespace fusion { namespace detail |
25 | { |
26 | //auto segmented_end_impl( seq, stack ) |
27 | //{ |
28 | // assert(is_segmented(seq)); |
29 | // auto it = end(segments(seq)); |
30 | // return cons(iterator_range(it, it), stack); |
31 | //} |
32 | |
33 | template <typename Sequence, typename Stack> |
34 | struct segmented_end_impl |
35 | { |
36 | BOOST_MPL_ASSERT((traits::is_segmented<Sequence>)); |
37 | |
38 | typedef |
39 | typename result_of::end< |
40 | typename remove_reference< |
41 | typename add_const< |
42 | typename result_of::segments<Sequence>::type |
43 | >::type |
44 | >::type |
45 | >::type |
46 | end_type; |
47 | |
48 | typedef iterator_range<end_type, end_type> pair_type; |
49 | typedef cons<pair_type, Stack> type; |
50 | |
51 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
52 | static pair_type make_pair(end_type end) |
53 | { |
54 | return pair_type(end, end); |
55 | } |
56 | |
57 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
58 | static type call(Sequence & seq, Stack stack) |
59 | { |
60 | return type( |
61 | make_pair(end: fusion::end(fusion::segments(seq))), |
62 | stack); |
63 | } |
64 | }; |
65 | |
66 | }}} |
67 | |
68 | #endif |
69 | |