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Implement C++11 variadic templates based fusion::tuple.

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This commit is contained in:
Kohei Takahashi
2015-07-03 01:36:49 +09:00
parent 62d9833bbf
commit bc01b7fa24
8 changed files with 153 additions and 6 deletions
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include/boost/fusion/tuple/tuple.hpp
+74 -1
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@@ -1,5 +1,5 @@
/*=============================================================================
Copyright (c) 2014 Kohei Takahashi
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)
@@ -13,7 +13,80 @@
///////////////////////////////////////////////////////////////////////////////
// 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/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 <utility>
namespace boost { namespace fusion
{
template <typename ...T>
struct tuple : vector<T...>
{
typedef vector<T...> base_type;
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
tuple()
: base_type() {}
template <typename ...U>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
tuple(tuple<U...> const& other)
: base_type(other) {}
template <typename ...U>
BOOST_CONSTEXPR BOOST_FUSION_GPU_ENABLED
tuple(tuple<U...>&& other)
: base_type(std::move(other)) {}
template <typename ...U>
/*BOOST_CONSTEXPR*/ BOOST_FUSION_GPU_ENABLED
explicit
tuple(U&&... args)
: base_type(std::forward<U>(args)...) {}
template <typename U>
BOOST_CXX14_CONSTEXPR BOOST_FUSION_GPU_ENABLED
tuple& operator=(U&& rhs)
{
base_type::operator=(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