Sprout/sprout/sub_array/tuple.hpp
2012-10-06 00:58:56 +09:00

63 lines
2.3 KiB
C++

#ifndef SPROUT_SUB_ARRAY_TUPLE_HPP
#define SPROUT_SUB_ARRAY_TUPLE_HPP
#include <cstddef>
#include <type_traits>
#include <tuple>
#include <sprout/config.hpp>
#include <sprout/container/traits.hpp>
#include <sprout/container/functions.hpp>
#include <sprout/iterator/operation.hpp>
#include <sprout/utility/move.hpp>
#include <sprout/sub_array/sub_array.hpp>
#include <sprout/sub_array/container.hpp>
#include <sprout/tuple/tuple/get.hpp>
namespace sprout {
//
// tuple_get
//
template<std::size_t I, typename Container>
inline SPROUT_CONSTEXPR typename sprout::container_traits<sprout::sub_array<Container> >::value_type&
tuple_get(sprout::sub_array<Container>& t)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(*sprout::next(sprout::internal_begin(t), I)))
{
static_assert(I < sprout::container_traits<sprout::sub_array<Container> >::static_size, "tuple_get: index out of range");
return *sprout::next(sprout::internal_begin(t), I);
}
template<std::size_t I, typename Container>
inline SPROUT_CONSTEXPR typename sprout::container_traits<sprout::sub_array<Container> >::value_type const&
tuple_get(sprout::sub_array<Container> const& t)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(*sprout::next(sprout::internal_begin(t), I)))
{
static_assert(I < sprout::container_traits<sprout::sub_array<Container> >::static_size, "tuple_get: index out of range");
return *sprout::next(sprout::internal_begin(t), I);
}
template<std::size_t I, typename Container>
inline SPROUT_CONSTEXPR typename sprout::container_traits<sprout::sub_array<Container> >::value_type&&
tuple_get(sprout::sub_array<Container>&& t)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(sprout::move(sprout::tuples::get<I>(t))))
{
return sprout::move(sprout::tuples::get<I>(t));
}
} // namespace sprout
namespace std {
//
// tuple_size
//
template<typename Container>
struct tuple_size<sprout::sub_array<Container> >
: public std::tuple_size<typename std::remove_reference<Container>::type>
{};
//
// tuple_element
//
template<std::size_t I, typename Container>
struct tuple_element<I, sprout::sub_array<Container> >
: public std::tuple_element<I, typename std::remove_reference<Container>::type>
{};
} // namespace std
#endif // #ifndef SPROUT_SUB_ARRAY_TUPLE_HPP