Chris@16: /*=============================================================================
Chris@16:     Copyright (c) 2001-2013 Joel de Guzman
Chris@16: 
Chris@16:     Distributed under the Boost Software License, Version 1.0. (See accompanying
Chris@16:     file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: ==============================================================================*/
Chris@16: #if !defined(FUSION_MOVE_01192013_2225)
Chris@16: #define FUSION_MOVE_01192013_2225
Chris@16: 
Chris@101: #include <boost/fusion/support/config.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic/begin.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic/end.hpp>
Chris@16: #include <boost/fusion/sequence/intrinsic/size.hpp>
Chris@16: #include <boost/fusion/sequence/comparison/detail/equal_to.hpp>
Chris@16: #include <boost/fusion/support/is_sequence.hpp>
Chris@16: #include <boost/config.hpp>
Chris@16: #include <boost/static_assert.hpp>
Chris@16: #include <boost/utility/enable_if.hpp>
Chris@101: #include <boost/mpl/and.hpp>
Chris@101: 
Chris@101: #include <utility> // for std::move
Chris@16: 
Chris@16: #if defined (BOOST_MSVC)
Chris@16: #  pragma warning(push)
Chris@16: #  pragma warning (disable: 4100) // unreferenced formal parameter
Chris@16: #endif
Chris@16: 
Chris@16: namespace boost { namespace fusion
Chris@16: {
Chris@16:     namespace detail
Chris@16:     {
Chris@16:         template <typename Seq1, typename Seq2>
Chris@16:         struct sequence_move
Chris@16:         {
Chris@16:             typedef typename result_of::end<Seq1>::type end1_type;
Chris@16:             typedef typename result_of::end<Seq2>::type end2_type;
Chris@16: 
Chris@16:             template <typename I1, typename I2>
Chris@101:             BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static void
Chris@16:             call(I1 const&, I2 const&, mpl::true_)
Chris@16:             {
Chris@16:             }
Chris@16: 
Chris@16:             template <typename I1, typename I2>
Chris@101:             BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static void
Chris@16:             call(I1 const& src, I2 const& dest, mpl::false_)
Chris@16:             {
Chris@16:                 *dest = std::move(*src);
Chris@16:                 call(fusion::next(src), fusion::next(dest));
Chris@16:             }
Chris@16: 
Chris@16:             template <typename I1, typename I2>
Chris@101:             BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@16:             static void
Chris@16:             call(I1 const& src, I2 const& dest)
Chris@16:             {
Chris@16:                 typename result_of::equal_to<I1, end1_type>::type eq;
Chris@16:                 return call(src, dest, eq);
Chris@16:             }
Chris@16:         };
Chris@16:     }
Chris@16: 
Chris@101:     namespace result_of
Chris@101:     {
Chris@101:         template <typename Seq1, typename Seq2>
Chris@101:         struct move
Chris@101:             : enable_if<mpl::and_<
Chris@101:                   traits::is_sequence<Seq1>,
Chris@101:                   traits::is_sequence<Seq2>
Chris@101:               > > {};
Chris@101:     }
Chris@101: 
Chris@16:     template <typename Seq1, typename Seq2>
Chris@101:     BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
Chris@101:     inline typename result_of::move<Seq1, Seq2>::type
Chris@16:     move(Seq1&& src, Seq2& dest)
Chris@16:     {
Chris@16:         BOOST_STATIC_ASSERT(
Chris@16:             result_of::size<Seq1>::value <= result_of::size<Seq2>::value);
Chris@16: 
Chris@16:         detail::sequence_move<
Chris@16:             Seq1, Seq2>::
Chris@16:             call(fusion::begin(src), fusion::begin(dest));
Chris@16:     }
Chris@16: }}
Chris@16: 
Chris@16: #if defined (BOOST_MSVC)
Chris@16: #  pragma warning(pop)
Chris@16: #endif
Chris@16: 
Chris@16: #endif