| //===----------------------------------------------------------------------===// |
| // |
| // 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_COPY_H |
| #define _LIBCPP___ALGORITHM_PSTL_COPY_H |
| |
| #include <__algorithm/copy_n.h> |
| #include <__algorithm/pstl_transform.h> |
| #include <__config> |
| #include <__functional/identity.h> |
| #include <__iterator/iterator_traits.h> |
| #include <__type_traits/is_constant_evaluated.h> |
| #include <__type_traits/is_execution_policy.h> |
| #include <__type_traits/is_trivially_copyable.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| // TODO: Use the std::copy/move shenanigans to forward to std::memmove |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator, |
| class _ForwardOutIterator, |
| enable_if_t<is_execution_policy_v<__remove_cvref_t<_ExecutionPolicy>>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator |
| copy(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _ForwardOutIterator __result) { |
| return std::transform(__policy, __first, __last, __result, __identity()); |
| } |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator, |
| class _ForwardOutIterator, |
| class _Size, |
| enable_if_t<is_execution_policy_v<__remove_cvref_t<_ExecutionPolicy>>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator |
| copy_n(_ExecutionPolicy&& __policy, _ForwardIterator __first, _Size __n, _ForwardOutIterator __result) { |
| if constexpr (__has_random_access_iterator_category<_ForwardIterator>::value) |
| return std::copy(__policy, __first, __first + __n, __result); |
| else |
| return std::copy_n(__first, __n, __result); |
| } |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |
| |
| #endif // _LIBCPP___ALGORITHM_PSTL_COPY_H |