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ARMC5 <array>: Add tuple interface

pull/11076/head
Kevin Bracey 2019-07-19 17:19:12 +03:00
parent 0449e6f1a3
commit 940ed6c2b1
1 changed files with 43 additions and 0 deletions
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43
platform/cxxsupport/TOOLCHAIN_ARMC5/array
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@ -19,8 +19,10 @@
#include <initializer_list> // required by standard
#include <_move.h>
#include <cstddef> // size_t, ptrdiff_t
#include <algorithm> // fill and swap_ranges
#include <type_traits> // integral_constant
namespace std {
template <typename>
@ -203,6 +205,47 @@ void swap(array<_TypeT, _Size> &__x, array<_TypeT, _Size> &__y)
__x.swap(__y);
}
// [array.tuple]
template <typename>
struct tuple_size;
template <typename _TypeT, size_t _Size>
struct tuple_size<array<_TypeT, _Size>> : integral_constant<size_t, _Size> { };
template <size_t, typename>
struct tuple_element;
template <size_t _Idx, typename _TypeT, size_t _Size>
struct tuple_element<_Idx, array<_TypeT, _Size>> : type_identity<_TypeT> {
static_assert(_Idx < _Size, "array index out of bounds");
};
template <size_t _Idx, typename _TypeT, size_t _Size>
constexpr _TypeT &get(array<_TypeT, _Size> &__a) noexcept
{
static_assert(_Idx < _Size, "array index out of bounds");
return __a._C_elem[_Idx];
}
template <size_t _Idx, typename _TypeT, size_t _Size>
_TypeT &&get(array<_TypeT, _Size> &&__a) noexcept
{
return std::move(get<_Idx>(__a));
}
template <size_t _Idx, typename _TypeT, size_t _Size>
constexpr const _TypeT &get(const array<_TypeT, _Size> &__a) noexcept
{
static_assert(_Idx < _Size, "array index out of bounds");
return __a._C_elem[_Idx];
}
template <size_t _Idx, typename _TypeT, size_t _Size>
const _TypeT &&get(const array<_TypeT, _Size> &&__a) noexcept
{
return std::move(get<_Idx>(__a));
}
} // namespace std
#endif /* __array */