diff options
Diffstat (limited to 'libcxx/include/__algorithm/pstl_fill.h')
| -rw-r--r-- | libcxx/include/__algorithm/pstl_fill.h | 51 |
1 files changed, 39 insertions, 12 deletions
diff --git a/libcxx/include/__algorithm/pstl_fill.h b/libcxx/include/__algorithm/pstl_fill.h index d64c828d9046..3057dcc04f1a 100644 --- a/libcxx/include/__algorithm/pstl_fill.h +++ b/libcxx/include/__algorithm/pstl_fill.h @@ -13,13 +13,14 @@ #include <__algorithm/pstl_for_each.h> #include <__algorithm/pstl_frontend_dispatch.h> #include <__config> +#include <__iterator/concepts.h> #include <__iterator/cpp17_iterator_concepts.h> #include <__iterator/iterator_traits.h> #include <__type_traits/enable_if.h> #include <__type_traits/is_execution_policy.h> #include <__type_traits/remove_cvref.h> #include <__utility/move.h> -#include <__utility/terminate_on_exception.h> +#include <optional> #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) # pragma GCC system_header @@ -37,13 +38,13 @@ template <class _ExecutionPolicy, class _Tp, class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> -_LIBCPP_HIDE_FROM_ABI void -fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { +_LIBCPP_HIDE_FROM_ABI optional<__empty> +__fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) noexcept { _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); - std::__pstl_frontend_dispatch( - _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill), + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill, _RawPolicy), [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) { - std::for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { + return std::__for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { __element = __g_value; }); }, @@ -52,6 +53,18 @@ fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __l __value); } +template <class _ExecutionPolicy, + class _ForwardIterator, + class _Tp, + class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, + enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + if (!std::__fill(__policy, std::move(__first), std::move(__last), __value)) + std::__throw_bad_alloc(); +} + template <class> void __pstl_fill_n(); // declaration needed for the frontend dispatch below @@ -61,22 +74,36 @@ template <class _ExecutionPolicy, class _Tp, class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> -_LIBCPP_HIDE_FROM_ABI void -fill_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _SizeT __n, const _Tp& __value) { +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<__empty> +__fill_n(_ExecutionPolicy&& __policy, _ForwardIterator&& __first, _SizeT&& __n, const _Tp& __value) noexcept { _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); - std::__pstl_frontend_dispatch( - _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill_n), + return std::__pstl_frontend_dispatch( + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill_n, _RawPolicy), [&](_ForwardIterator __g_first, _SizeT __g_n, const _Tp& __g_value) { - if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) + if constexpr (__has_random_access_iterator_category_or_concept<_ForwardIterator>::value) std::fill(__policy, __g_first, __g_first + __g_n, __g_value); else std::fill_n(__g_first, __g_n, __g_value); + return optional<__empty>{__empty{}}; }, std::move(__first), - __n, + std::move(__n), __value); } +template <class _ExecutionPolicy, + class _ForwardIterator, + class _SizeT, + class _Tp, + class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, + enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> +_LIBCPP_HIDE_FROM_ABI void +fill_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _SizeT __n, const _Tp& __value) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + if (!std::__fill_n(__policy, std::move(__first), std::move(__n), __value)) + std::__throw_bad_alloc(); +} + _LIBCPP_END_NAMESPACE_STD #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |