boost/fusion/tuple/tuple.hpp
/*=============================================================================
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
