| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___ALGORITHM_PSTL_FILL_H |
| #define _LIBCPP___ALGORITHM_PSTL_FILL_H |
| |
| #include <__algorithm/fill_n.h> |
| #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 <optional> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_PUSH_MACROS |
| #include <__undef_macros> |
| |
| #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| template <class> |
| void __pstl_fill(); // declaration needed for the frontend dispatch below |
| |
| 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 optional<__empty> |
| __fill(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) noexcept { |
| return std::__pstl_frontend_dispatch( |
| _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_fill, _RawPolicy), |
| [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) { |
| return std::__for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { |
| __element = __g_value; |
| }); |
| }, |
| std::move(__first), |
| std::move(__last), |
| __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, "fill requires ForwardIterators"); |
| 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 |
| |
| 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> |
| [[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<__empty> |
| __fill_n(_ExecutionPolicy&& __policy, _ForwardIterator&& __first, _SizeT&& __n, const _Tp& __value) noexcept { |
| 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_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), |
| 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, "fill_n requires ForwardIterators"); |
| 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 |
| |
| _LIBCPP_POP_MACROS |
| |
| #endif // _LIBCPP___ALGORITHM_PSTL_FILL_H |