projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2001-2011 Joel de Guzman | |
| 3 | Copyright (c) 2011 Brandon Kohn | |
| 4 | ||
| 5 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 6 | file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) | |
| 7 | ==============================================================================*/ | |
| 8 | #if !defined(BOOST_FUSION_MAP_DETAIL_AT_IMPL_HPP) | |
| 9 | #define BOOST_FUSION_MAP_DETAIL_AT_IMPL_HPP | |
| 10 | ||
| 11 | #include <boost/fusion/support/config.hpp> | |
| 12 | #include <boost/fusion/support/detail/access.hpp> | |
| 13 | #include <boost/type_traits/is_const.hpp> | |
| 14 | #include <boost/mpl/at.hpp> | |
| 15 | #include <boost/mpl/int.hpp> | |
| 16 | ||
| 17 | namespace boost { namespace fusion | |
| 18 | { | |
| 19 | struct map_tag; | |
| 20 | ||
| 21 | namespace extension | |
| 22 | { | |
| 23 | template <typename Tag> | |
| 24 | struct at_impl; | |
| 25 | ||
| 26 | template <> | |
| 27 | struct at_impl<map_tag> | |
| 28 | { | |
| 29 | template <typename Sequence, typename N> | |
| 30 | struct apply | |
| 31 | { | |
| 32 | typedef typename | |
| 33 | mpl::at<typename Sequence::storage_type::types, N>::type | |
| 34 | element; | |
| 35 | typedef typename detail::ref_result<element>::type type; | |
| 36 | ||
| 37 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 38 | static type | |
| 39 | call(Sequence& m) | |
| 40 | { | |
| 41 | return m.get_data().at_impl(N()); | |
| 42 | } | |
| 43 | }; | |
| 44 | ||
| 45 | template <typename Sequence, typename N> | |
| 46 | struct apply<Sequence const, N> | |
| 47 | { | |
| 48 | typedef typename | |
| 49 | mpl::at<typename Sequence::storage_type::types, N>::type | |
| 50 | element; | |
| 51 | typedef typename detail::cref_result<element>::type type; | |
| 52 | ||
| 53 | BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 54 | static type | |
| 55 | call(Sequence const& m) | |
| 56 | { | |
| 57 | return m.get_data().at_impl(N()); | |
| 58 | } | |
| 59 | }; | |
| 60 | }; | |
| 61 | } | |
| 62 | }} | |
| 63 | ||
| 64 | #endif //BOOST_FUSION_MAP_DETAIL_AT_IMPL_HPP |