128 lines
4.2 KiB
C++
128 lines
4.2 KiB
C++
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/*=============================================================================
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Copyright (c) 2014-2015 Kohei Takahashi
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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==============================================================================*/
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#ifndef FUSION_TUPLE_14122014_0102
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#define FUSION_TUPLE_14122014_0102
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#include <boost/fusion/support/config.hpp>
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#include <boost/fusion/tuple/tuple_fwd.hpp>
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///////////////////////////////////////////////////////////////////////////////
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// With no variadics, we will use the C++03 version
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///////////////////////////////////////////////////////////////////////////////
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#if !defined(BOOST_FUSION_HAS_VARIADIC_TUPLE)
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# include <boost/fusion/tuple/detail/tuple.hpp>
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#else
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///////////////////////////////////////////////////////////////////////////////
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// C++11 interface
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///////////////////////////////////////////////////////////////////////////////
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#include <boost/core/enable_if.hpp>
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#include <boost/fusion/container/vector/vector.hpp>
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#include <boost/fusion/sequence/intrinsic/size.hpp>
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#include <boost/fusion/sequence/intrinsic/value_at.hpp>
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#include <boost/fusion/sequence/intrinsic/at.hpp>
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#include <boost/fusion/sequence/comparison.hpp>
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#include <boost/fusion/sequence/io.hpp>
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#include <boost/fusion/support/detail/and.hpp>
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#include <boost/type_traits/is_convertible.hpp>
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#include <utility>
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namespace boost { namespace fusion
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{
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template <typename ...T>
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struct tuple
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: vector_detail::vector_data<
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typename detail::make_index_sequence<sizeof...(T)>::type
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, T...
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>
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{
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typedef vector_detail::vector_data<
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typename detail::make_index_sequence<sizeof...(T)>::type
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, T...
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> base;
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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BOOST_DEFAULTED_FUNCTION(tuple(), {})
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template <
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typename ...U
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, typename = typename boost::enable_if_c<
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sizeof...(U) >= sizeof...(T)
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>::type
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>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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tuple(tuple<U...> const& other)
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: base(vector_detail::each_elem(), other) {}
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template <
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typename ...U
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, typename = typename boost::enable_if_c<
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sizeof...(U) >= sizeof...(T)
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>::type
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>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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tuple(tuple<U...>&& other)
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: base(vector_detail::each_elem(), std::move(other)) {}
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template <
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typename ...U
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, typename = typename boost::enable_if_c<(
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fusion::detail::and_<is_convertible<U, T>...>::value &&
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sizeof...(U) >= 1
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)>::type
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>
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/*BOOST_CONSTEXPR*/ BOOST_FUSION_GPU_ENABLED
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explicit
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tuple(U&&... args)
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: base(vector_detail::each_elem(), std::forward<U>(args)...) {}
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template<typename U1, typename U2>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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tuple(std::pair<U1, U2> const& other)
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: base(vector_detail::each_elem(), other.first, other.second) {}
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template<typename U1, typename U2>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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tuple(std::pair<U1, U2>&& other)
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: base(vector_detail::each_elem(), std::move(other.first), std::move(other.second)) {}
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template<typename U>
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BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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tuple& operator=(U&& rhs)
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{
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base::assign_sequence(std::forward<U>(rhs));
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return *this;
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}
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};
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template <typename Tuple>
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struct tuple_size : result_of::size<Tuple> {};
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template <int N, typename Tuple>
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struct tuple_element : result_of::value_at_c<Tuple, N> {};
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template <int N, typename Tuple>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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inline typename result_of::at_c<Tuple, N>::type
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get(Tuple& tup)
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{
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return at_c<N>(tup);
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}
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template <int N, typename Tuple>
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BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
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inline typename result_of::at_c<Tuple const, N>::type
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get(Tuple const& tup)
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{
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return at_c<N>(tup);
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}
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}}
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#endif
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#endif
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