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add to_array for std::array

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bolero-MURAKAMI 2016-01-24 19:58:04 +09:00
parent 15fc54b379
commit 38529faff7
1 changed files with 37 additions and 8 deletions
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45
sprout/array/array.hpp
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@ -11,6 +11,7 @@
#include <utility> #include <utility>
#include <type_traits> #include <type_traits>
#include <stdexcept> #include <stdexcept>
#include <array>
#include <sprout/config.hpp> #include <sprout/config.hpp>
#include <sprout/workaround/std/cstddef.hpp> #include <sprout/workaround/std/cstddef.hpp>
#include <sprout/index_tuple/metafunction.hpp> #include <sprout/index_tuple/metafunction.hpp>
@ -23,6 +24,7 @@
#include <sprout/algorithm/cxx14/fill_n.hpp> #include <sprout/algorithm/cxx14/fill_n.hpp>
#include <sprout/algorithm/cxx14/swap_ranges.hpp> #include <sprout/algorithm/cxx14/swap_ranges.hpp>
#include <sprout/utility/swap.hpp> #include <sprout/utility/swap.hpp>
#include <sprout/type_traits/is_nothrow_copy_constructible.hpp>
#if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION #if SPROUT_USE_INDEX_ITERATOR_IMPLEMENTATION
# include <sprout/iterator/index_iterator.hpp> # include <sprout/iterator/index_iterator.hpp>
#endif #endif
@ -271,19 +273,46 @@ namespace sprout {
lhs.swap(rhs); lhs.swap(rhs);
} }
namespace detail {
template<typename T, std::size_t N, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR sprout::array<typename std::remove_cv<T>::type, N>
to_array_impl(T (& arr)[N], sprout::index_tuple<Indexes...>) {
return sprout::array<typename std::remove_cv<T>::type, N>{{arr[Indexes]...}};
}
} // namespace detail
// //
// to_array // to_array
// //
template<typename T, std::size_t N> template<typename T, std::size_t N>
inline SPROUT_CONSTEXPR sprout::array<T, N>
to_array(sprout::array<T, N> const& arr)
SPROUT_NOEXCEPT_IF(sprout::is_nothrow_copy_constructible<T>::value)
{
return arr;
}
namespace detail {
template<typename T, std::size_t N, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR sprout::array<typename std::remove_cv<T>::type, N>
to_array_impl(T (& arr)[N], sprout::index_tuple<Indexes...>)
SPROUT_NOEXCEPT_IF(sprout::is_nothrow_copy_constructible<typename std::remove_cv<T>::type>::value)
{
return sprout::array<typename std::remove_cv<T>::type, N>{{arr[Indexes]...}};
}
} // namespace detail
template<typename T, std::size_t N>
inline SPROUT_CONSTEXPR sprout::array<typename std::remove_cv<T>::type, N> inline SPROUT_CONSTEXPR sprout::array<typename std::remove_cv<T>::type, N>
to_array(T (& arr)[N]) { to_array(T (& arr)[N])
SPROUT_NOEXCEPT_IF(sprout::is_nothrow_copy_constructible<typename std::remove_cv<T>::type>::value)
{
return sprout::detail::to_array_impl(arr, sprout::make_index_tuple<N>::make());
}
namespace detail {
template<typename T, std::size_t N, sprout::index_t... Indexes>
inline SPROUT_CONSTEXPR sprout::array<T, N>
to_array_impl(std::array<T, N> const& arr, sprout::index_tuple<Indexes...>)
SPROUT_NOEXCEPT_IF(sprout::is_nothrow_copy_constructible<T>::value)
{
return sprout::array<T, N>{{arr[Indexes]...}};
}
} // namespace detail
template<typename T, std::size_t N>
inline SPROUT_CONSTEXPR sprout::array<T, N>
to_array(std::array<T, N> const& arr)
SPROUT_NOEXCEPT_IF(sprout::is_nothrow_copy_constructible<T>::value)
{
return sprout::detail::to_array_impl(arr, sprout::make_index_tuple<N>::make()); return sprout::detail::to_array_impl(arr, sprout::make_index_tuple<N>::make());
} }
} // namespace sprout } // namespace sprout