| //===----------------------------------------------------------------------===// |
| // |
| // 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_EQUAL_H |
| #define _LIBCPP___ALGORITHM_PSTL_EQUAL_H |
| |
| #include <__algorithm/equal.h> |
| #include <__algorithm/pstl_frontend_dispatch.h> |
| #include <__config> |
| #include <__functional/operations.h> |
| #include <__iterator/cpp17_iterator_concepts.h> |
| #include <__iterator/iterator_traits.h> |
| #include <__numeric/pstl_transform_reduce.h> |
| #include <__utility/move.h> |
| |
| #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_equal(); |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator1, |
| class _ForwardIterator2, |
| class _Pred, |
| class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, |
| enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> |
| [[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<bool> |
| __equal(_ExecutionPolicy&& __policy, |
| _ForwardIterator1&& __first1, |
| _ForwardIterator1&& __last1, |
| _ForwardIterator2&& __first2, |
| _Pred&& __pred) noexcept { |
| return std::__pstl_frontend_dispatch( |
| _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_equal, _RawPolicy), |
| [&__policy]( |
| _ForwardIterator1 __g_first1, _ForwardIterator1 __g_last1, _ForwardIterator2 __g_first2, _Pred __g_pred) { |
| return std::__transform_reduce( |
| __policy, |
| std::move(__g_first1), |
| std::move(__g_last1), |
| std::move(__g_first2), |
| true, |
| std::logical_and{}, |
| std::move(__g_pred)); |
| }, |
| std::move(__first1), |
| std::move(__last1), |
| std::move(__first2), |
| std::move(__pred)); |
| } |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator1, |
| class _ForwardIterator2, |
| class _Pred, |
| class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, |
| enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI bool |
| equal(_ExecutionPolicy&& __policy, |
| _ForwardIterator1 __first1, |
| _ForwardIterator1 __last1, |
| _ForwardIterator2 __first2, |
| _Pred __pred) { |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1, "equal requires ForwardIterators"); |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2, "equal requires ForwardIterators"); |
| auto __res = std::__equal(__policy, std::move(__first1), std::move(__last1), std::move(__first2), std::move(__pred)); |
| if (!__res) |
| std::__throw_bad_alloc(); |
| return *__res; |
| } |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator1, |
| class _ForwardIterator2, |
| enable_if_t<is_execution_policy_v<__remove_cvref_t<_ExecutionPolicy>>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI bool |
| equal(_ExecutionPolicy&& __policy, _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) { |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1, "equal requires ForwardIterators"); |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2, "equal requires ForwardIterators"); |
| return std::equal(__policy, std::move(__first1), std::move(__last1), std::move(__first2), std::equal_to{}); |
| } |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator1, |
| class _ForwardIterator2, |
| class _Pred, |
| class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, |
| enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> |
| [[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<bool> |
| __equal(_ExecutionPolicy&& __policy, |
| _ForwardIterator1&& __first1, |
| _ForwardIterator1&& __last1, |
| _ForwardIterator2&& __first2, |
| _ForwardIterator2&& __last2, |
| _Pred&& __pred) noexcept { |
| return std::__pstl_frontend_dispatch( |
| _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_equal, _RawPolicy), |
| [&__policy](_ForwardIterator1 __g_first1, |
| _ForwardIterator1 __g_last1, |
| _ForwardIterator2 __g_first2, |
| _ForwardIterator2 __g_last2, |
| _Pred __g_pred) -> optional<bool> { |
| if constexpr (__has_random_access_iterator_category<_ForwardIterator1>::value && |
| __has_random_access_iterator_category<_ForwardIterator2>::value) { |
| if (__g_last1 - __g_first1 != __g_last2 - __g_first2) |
| return false; |
| return std::__equal( |
| __policy, std::move(__g_first1), std::move(__g_last1), std::move(__g_first2), std::move(__g_pred)); |
| } else { |
| (void)__policy; // Avoid unused lambda capture warning |
| return std::equal( |
| std::move(__g_first1), |
| std::move(__g_last1), |
| std::move(__g_first2), |
| std::move(__g_last2), |
| std::move(__g_pred)); |
| } |
| }, |
| std::move(__first1), |
| std::move(__last1), |
| std::move(__first2), |
| std::move(__last2), |
| std::move(__pred)); |
| } |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator1, |
| class _ForwardIterator2, |
| class _Pred, |
| class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, |
| enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI bool |
| equal(_ExecutionPolicy&& __policy, |
| _ForwardIterator1 __first1, |
| _ForwardIterator1 __last1, |
| _ForwardIterator2 __first2, |
| _ForwardIterator2 __last2, |
| _Pred __pred) { |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1, "equal requires ForwardIterators"); |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2, "equal requires ForwardIterators"); |
| auto __res = std::__equal( |
| __policy, std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), std::move(__pred)); |
| if (!__res) |
| std::__throw_bad_alloc(); |
| return *__res; |
| } |
| |
| template <class _ExecutionPolicy, |
| class _ForwardIterator1, |
| class _ForwardIterator2, |
| enable_if_t<is_execution_policy_v<__remove_cvref_t<_ExecutionPolicy>>, int> = 0> |
| _LIBCPP_HIDE_FROM_ABI bool |
| equal(_ExecutionPolicy&& __policy, |
| _ForwardIterator1 __first1, |
| _ForwardIterator1 __last1, |
| _ForwardIterator2 __first2, |
| _ForwardIterator2 __last2) { |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1, "equal requires ForwardIterators"); |
| _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2, "equal requires ForwardIterators"); |
| return std::equal( |
| __policy, std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), std::equal_to{}); |
| } |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |
| |
| _LIBCPP_POP_MACROS |
| |
| #endif // _LIBCPP___ALGORITHM_PSTL_EQUAL_H |