projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 7c673cae FG |
1 | /*============================================================================= |
| 2 | Copyright (c) 2001-2011 Joel de Guzman | |
| 3 | Copyright (c) 2006 Dan Marsden | |
| 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_SWAP_20070501_1956) | |
| 9 | #define BOOST_FUSION_SWAP_20070501_1956 | |
| 10 | ||
| 11 | #include <boost/fusion/support/config.hpp> | |
| 12 | #include <algorithm> | |
| 13 | ||
| 14 | #include <boost/fusion/support/is_sequence.hpp> | |
| 15 | #include <boost/fusion/view/zip_view.hpp> | |
| 16 | #include <boost/fusion/algorithm/iteration/for_each.hpp> | |
| 17 | #include <boost/fusion/sequence/intrinsic/front.hpp> | |
| 18 | #include <boost/fusion/sequence/intrinsic/back.hpp> | |
| 19 | #include <boost/core/enable_if.hpp> | |
| 20 | #include <boost/mpl/and.hpp> | |
| 21 | ||
| 22 | namespace boost { namespace fusion { | |
| 23 | ||
| 24 | namespace result_of | |
| 25 | { | |
| 26 | template<typename Seq1, typename Seq2> | |
| 27 | struct swap | |
| 28 | : enable_if<mpl::and_< | |
| 29 | traits::is_sequence<Seq1>, | |
| 30 | traits::is_sequence<Seq2> | |
| 31 | > > {}; | |
| 32 | } | |
| 33 | ||
| 34 | namespace detail | |
| 35 | { | |
| 36 | struct swap | |
| 37 | { | |
| 38 | template<typename Elem> | |
| 39 | struct result | |
| 40 | { | |
| 41 | typedef void type; | |
| 42 | }; | |
| 43 | ||
| 44 | template<typename Elem> | |
| 45 | BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 46 | void operator()(Elem const& e) const | |
| 47 | { | |
| 48 | using std::swap; | |
| 49 | swap(front(e), back(e)); | |
| 50 | } | |
| 51 | }; | |
| 52 | } | |
| 53 | ||
| 54 | template<typename Seq1, typename Seq2> | |
| 55 | BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED | |
| 56 | inline typename result_of::swap<Seq1, Seq2>::type | |
| 57 | swap(Seq1& lhs, Seq2& rhs) | |
| 58 | { | |
| 59 | typedef vector<Seq1&, Seq2&> references; | |
| 60 | for_each(zip_view<references>(references(lhs, rhs)), detail::swap()); | |
| 61 | } | |
| 62 | }} | |
| 63 | ||
| 64 | #endif |