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+/*=============================================================================
+ Copyright (c) 2014-2015 Kohei Takahashi
+
+ 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)
+==============================================================================*/
+#ifndef FUSION_TUPLE_14122014_0102
+#define FUSION_TUPLE_14122014_0102
+
+#include <boost/fusion/support/config.hpp>
+#include <boost/fusion/tuple/tuple_fwd.hpp>
+
+///////////////////////////////////////////////////////////////////////////////
+// With no variadics, we will use the C++03 version
+///////////////////////////////////////////////////////////////////////////////
+#if !defined(BOOST_FUSION_HAS_VARIADIC_TUPLE)
+# include <boost/fusion/tuple/detail/tuple.hpp>
+#else
+
+///////////////////////////////////////////////////////////////////////////////
+// C++11 interface
+///////////////////////////////////////////////////////////////////////////////
+#include <boost/core/enable_if.hpp>
+#include <boost/fusion/container/vector/vector.hpp>
+#include <boost/fusion/sequence/intrinsic/size.hpp>
+#include <boost/fusion/sequence/intrinsic/value_at.hpp>
+#include <boost/fusion/sequence/intrinsic/at.hpp>
+#include <boost/fusion/sequence/comparison.hpp>
+#include <boost/fusion/sequence/io.hpp>
+#include <boost/fusion/support/detail/and.hpp>
+#include <boost/type_traits/is_convertible.hpp>
+#include <utility>
+
+namespace boost { namespace fusion
+{
+ template <typename ...T>
+ struct tuple
+ : vector_detail::vector_data<
+ typename detail::make_index_sequence<sizeof...(T)>::type
+ , T...
+ >
+ {
+ typedef vector_detail::vector_data<
+ typename detail::make_index_sequence<sizeof...(T)>::type
+ , T...
+ > base;
+
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ BOOST_DEFAULTED_FUNCTION(tuple(), {})
+
+ template <
+ typename ...U
+ , typename = typename boost::enable_if_c<
+ sizeof...(U) >= sizeof...(T)
+ >::type
+ >
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ tuple(tuple<U...> const& other)
+ : base(vector_detail::each_elem(), other) {}
+
+ template <
+ typename ...U
+ , typename = typename boost::enable_if_c<
+ sizeof...(U) >= sizeof...(T)
+ >::type
+ >
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ tuple(tuple<U...>&& other)
+ : base(vector_detail::each_elem(), std::move(other)) {}
+
+ template <
+ typename ...U
+ , typename = typename boost::enable_if_c<(
+ fusion::detail::and_<is_convertible<U, T>...>::value &&
+ sizeof...(U) >= 1
+ )>::type
+ >
+ /*BOOST_CONSTEXPR*/ BOOST_FUSION_GPU_ENABLED
+ explicit
+ tuple(U&&... args)
+ : base(vector_detail::each_elem(), std::forward<U>(args)...) {}
+
+ template<typename U1, typename U2>
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ tuple(std::pair<U1, U2> const& other)
+ : base(vector_detail::each_elem(), other.first, other.second) {}
+
+ template<typename U1, typename U2>
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ tuple(std::pair<U1, U2>&& other)
+ : base(vector_detail::each_elem(), std::move(other.first), std::move(other.second)) {}
+
+ template<typename U>
+ BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ tuple& operator=(U&& rhs)
+ {
+ base::assign_sequence(std::forward<U>(rhs));
+ return *this;
+ }
+ };
+
+ template <typename Tuple>
+ struct tuple_size : result_of::size<Tuple> {};
+
+ template <int N, typename Tuple>
+ struct tuple_element : result_of::value_at_c<Tuple, N> {};
+
+ template <int N, typename Tuple>
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ inline typename result_of::at_c<Tuple, N>::type
+ get(Tuple& tup)
+ {
+ return at_c<N>(tup);
+ }
+
+ template <int N, typename Tuple>
+ BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
+ inline typename result_of::at_c<Tuple const, N>::type
+ get(Tuple const& tup)
+ {
+ return at_c<N>(tup);
+ }
+}}
+
+#endif
+#endif
+