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