diff options
Diffstat (limited to 'contrib/llvm-project/libcxx/include/__algorithm/pstl_find.h')
| -rw-r--r-- | contrib/llvm-project/libcxx/include/__algorithm/pstl_find.h | 83 |
1 files changed, 62 insertions, 21 deletions
diff --git a/contrib/llvm-project/libcxx/include/__algorithm/pstl_find.h b/contrib/llvm-project/libcxx/include/__algorithm/pstl_find.h index 8e8adfecfa46..adc05ea1a9e5 100644 --- a/contrib/llvm-project/libcxx/include/__algorithm/pstl_find.h +++ b/contrib/llvm-project/libcxx/include/__algorithm/pstl_find.h @@ -15,12 +15,11 @@ #include <__algorithm/pstl_frontend_dispatch.h> #include <__config> #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 @@ -35,13 +34,26 @@ template <class _ExecutionPolicy, class _Predicate, class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> -_LIBCPP_HIDE_FROM_ABI _ForwardIterator -find_if(_ExecutionPolicy&&, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { - _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<__remove_cvref_t<_ForwardIterator>> +__find_if(_ExecutionPolicy&&, _ForwardIterator&& __first, _ForwardIterator&& __last, _Predicate&& __pred) noexcept { using _Backend = typename __select_backend<_RawPolicy>::type; return std::__pstl_find_if<_RawPolicy>(_Backend{}, std::move(__first), std::move(__last), std::move(__pred)); } +template <class _ExecutionPolicy, + class _ForwardIterator, + class _Predicate, + class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, + enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +find_if(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + auto __res = std::__find_if(__policy, std::move(__first), std::move(__last), std::move(__pred)); + if (!__res) + std::__throw_bad_alloc(); + return *std::move(__res); +} + template <class> void __pstl_find_if_not(); @@ -50,21 +62,36 @@ template <class _ExecutionPolicy, class _Predicate, class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> -_LIBCPP_HIDE_FROM_ABI _ForwardIterator -find_if_not(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { - _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<__remove_cvref_t<_ForwardIterator>> +__find_if_not(_ExecutionPolicy&& __policy, _ForwardIterator&& __first, _ForwardIterator&& __last, _Predicate&& __pred) { return std::__pstl_frontend_dispatch( - _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_find_if_not), - [&](_ForwardIterator __g_first, _ForwardIterator __g_last, _Predicate __g_pred) { - return std::find_if(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __value) { - return !__g_pred(__value); - }); + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_find_if_not, _RawPolicy), + [&](_ForwardIterator&& __g_first, _ForwardIterator&& __g_last, _Predicate&& __g_pred) + -> optional<__remove_cvref_t<_ForwardIterator>> { + return std::__find_if( + __policy, __g_first, __g_last, [&](__iter_reference<__remove_cvref_t<_ForwardIterator>> __value) { + return !__g_pred(__value); + }); }, std::move(__first), std::move(__last), std::move(__pred)); } +template <class _ExecutionPolicy, + class _ForwardIterator, + class _Predicate, + class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, + enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> +_LIBCPP_HIDE_FROM_ABI _ForwardIterator +find_if_not(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Predicate __pred) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + auto __res = std::__find_if_not(__policy, std::move(__first), std::move(__last), std::move(__pred)); + if (!__res) + std::__throw_bad_alloc(); + return *std::move(__res); +} + template <class> void __pstl_find(); @@ -73,21 +100,35 @@ 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 _ForwardIterator -find(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { - _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); +[[nodiscard]] _LIBCPP_HIDE_FROM_ABI optional<__remove_cvref_t<_ForwardIterator>> +__find(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) noexcept { return std::__pstl_frontend_dispatch( - _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_find), - [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) { - return std::find_if(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) { - return __element == __g_value; - }); + _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_find, _RawPolicy), + [&](_ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_value) -> optional<_ForwardIterator> { + return std::find_if( + __policy, __g_first, __g_last, [&](__iter_reference<__remove_cvref_t<_ForwardIterator>> __element) { + return __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 _ForwardIterator +find(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) { + _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); + auto __res = std::__find(__policy, std::move(__first), std::move(__last), __value); + if (!__res) + std::__throw_bad_alloc(); + return *std::move(__res); +} + _LIBCPP_END_NAMESPACE_STD #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 |