| 1 | /*============================================================================= |
|---|---|
| 2 | Copyright (c) 2001-2011 Joel de Guzman |
| 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(FUSION_END_04052005_1141) |
| 8 | #define FUSION_END_04052005_1141 |
| 9 | |
| 10 | #include <boost/fusion/support/config.hpp> |
| 11 | #include <boost/utility/enable_if.hpp> |
| 12 | #include <boost/mpl/empty_base.hpp> |
| 13 | #include <boost/mpl/if.hpp> |
| 14 | #include <boost/fusion/sequence/intrinsic_fwd.hpp> |
| 15 | #include <boost/fusion/support/tag_of.hpp> |
| 16 | #include <boost/fusion/support/is_sequence.hpp> |
| 17 | #include <boost/fusion/support/is_segmented.hpp> |
| 18 | #include <boost/fusion/sequence/intrinsic/detail/segmented_end.hpp> |
| 19 | |
| 20 | namespace boost { namespace fusion |
| 21 | { |
| 22 | // Special tags: |
| 23 | struct sequence_facade_tag; |
| 24 | struct boost_tuple_tag; // boost::tuples::tuple tag |
| 25 | struct boost_array_tag; // boost::array tag |
| 26 | struct mpl_sequence_tag; // mpl sequence tag |
| 27 | struct std_pair_tag; // std::pair tag |
| 28 | |
| 29 | namespace extension |
| 30 | { |
| 31 | template <typename Tag> |
| 32 | struct end_impl |
| 33 | { |
| 34 | template <typename Sequence> |
| 35 | struct apply |
| 36 | : mpl::if_< |
| 37 | traits::is_segmented<Sequence> |
| 38 | , detail::segmented_end<Sequence> |
| 39 | , mpl::empty_base |
| 40 | >::type |
| 41 | {}; |
| 42 | }; |
| 43 | |
| 44 | template <> |
| 45 | struct end_impl<sequence_facade_tag> |
| 46 | { |
| 47 | template <typename Sequence> |
| 48 | struct apply : Sequence::template end<Sequence> {}; |
| 49 | }; |
| 50 | |
| 51 | template <> |
| 52 | struct end_impl<boost_tuple_tag>; |
| 53 | |
| 54 | template <> |
| 55 | struct end_impl<boost_array_tag>; |
| 56 | |
| 57 | template <> |
| 58 | struct end_impl<mpl_sequence_tag>; |
| 59 | |
| 60 | template <> |
| 61 | struct end_impl<std_pair_tag>; |
| 62 | } |
| 63 | |
| 64 | namespace result_of |
| 65 | { |
| 66 | template <typename Sequence> |
| 67 | struct end |
| 68 | : extension::end_impl<typename detail::tag_of<Sequence>::type>:: |
| 69 | template apply<Sequence> |
| 70 | {}; |
| 71 | } |
| 72 | |
| 73 | template <typename Sequence> |
| 74 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| 75 | inline typename |
| 76 | lazy_enable_if< |
| 77 | traits::is_sequence<Sequence> |
| 78 | , result_of::end<Sequence> |
| 79 | >::type const |
| 80 | end(Sequence& seq) |
| 81 | { |
| 82 | return result_of::end<Sequence>::call(seq); |
| 83 | } |
| 84 | |
| 85 | template <typename Sequence> |
| 86 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED |
| 87 | inline typename |
| 88 | lazy_enable_if< |
| 89 | traits::is_sequence<Sequence> |
| 90 | , result_of::end<Sequence const> |
| 91 | >::type const |
| 92 | end(Sequence const& seq) |
| 93 | { |
| 94 | return result_of::end<Sequence const>::call(seq); |
| 95 | } |
| 96 | }} |
| 97 | |
| 98 | #endif |
| 99 |