vendor/llvm-project/llvmorg-17-init-19304-gd0b54bb50e51

1 files changed, 167 insertions, 0 deletions

diff --git a/libcxx/include/__algorithm/pstl_replace.h b/libcxx/include/__algorithm/pstl_replace.h
new file mode 100644
index 000000000000..04ffaaba596a
--- /dev/null
+++ b/libcxx/include/__algorithm/pstl_replace.h
@@ -0,0 +1,167 @@
+//===----------------------------------------------------------------------===//
+//
+// 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_REPLACE_H
+#define _LIBCPP___ALGORITHM_PSTL_REPLACE_H
+
+#include <__algorithm/pstl_backend.h>
+#include <__algorithm/pstl_for_each.h>
+#include <__algorithm/pstl_frontend_dispatch.h>
+#include <__algorithm/pstl_transform.h>
+#include <__config>
+#include <__iterator/iterator_traits.h>
+#include <__type_traits/enable_if.h>
+#include <__type_traits/remove_cvref.h>
+#include <__utility/move.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
+
+template <class>
+void __pstl_replace_if();
+
+template <class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _Pred,
+          class _Tp,
+          class _RawPolicy                                    = __remove_cvref_t<_ExecutionPolicy>,
+          enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI void
+replace_if(_ExecutionPolicy&& __policy,
+           _ForwardIterator __first,
+           _ForwardIterator __last,
+           _Pred __pred,
+           const _Tp& __new_value) {
+  std::__pstl_frontend_dispatch(
+      _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace_if),
+      [&__policy](_ForwardIterator __g_first, _ForwardIterator __g_last, _Pred __g_pred, const _Tp& __g_new_value) {
+        std::for_each(__policy, __g_first, __g_last, [&](__iter_reference<_ForwardIterator> __element) {
+          if (__g_pred(__element))
+            __element = __g_new_value;
+        });
+      },
+      std::move(__first),
+      std::move(__last),
+      std::move(__pred),
+      __new_value);
+}
+
+template <class>
+void __pstl_replace();
+
+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
+replace(_ExecutionPolicy&& __policy,
+        _ForwardIterator __first,
+        _ForwardIterator __last,
+        const _Tp& __old_value,
+        const _Tp& __new_value) {
+  std::__pstl_frontend_dispatch(
+      _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace),
+      [&__policy](
+          _ForwardIterator __g_first, _ForwardIterator __g_last, const _Tp& __g_old_value, const _Tp& __g_new_value) {
+        std::replace_if(
+            __policy,
+            std::move(__g_first),
+            std::move(__g_last),
+            [&](__iter_reference<_ForwardIterator> __element) { return __element == __g_old_value; },
+            __g_new_value);
+      },
+      std::move(__first),
+      std::move(__last),
+      __old_value,
+      __new_value);
+}
+
+template <class>
+void __pstl_replace_copy_if();
+
+template <class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _ForwardOutIterator,
+          class _Pred,
+          class _Tp,
+          class _RawPolicy                                    = __remove_cvref_t<_ExecutionPolicy>,
+          enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI void replace_copy_if(
+    _ExecutionPolicy&& __policy,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _ForwardOutIterator __result,
+    _Pred __pred,
+    const _Tp& __new_value) {
+  std::__pstl_frontend_dispatch(
+      _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace_copy_if),
+      [&__policy](_ForwardIterator __g_first,
+                  _ForwardIterator __g_last,
+                  _ForwardOutIterator __g_result,
+                  _Pred __g_pred,
+                  const _Tp& __g_new_value) {
+        std::transform(__policy, __g_first, __g_last, __g_result, [&](__iter_reference<_ForwardIterator> __element) {
+          return __g_pred(__element) ? __g_new_value : __element;
+        });
+      },
+      std::move(__first),
+      std::move(__last),
+      std::move(__result),
+      std::move(__pred),
+      __new_value);
+}
+
+template <class>
+void __pstl_replace_copy();
+
+template <class _ExecutionPolicy,
+          class _ForwardIterator,
+          class _ForwardOutIterator,
+          class _Tp,
+          class _RawPolicy                                    = __remove_cvref_t<_ExecutionPolicy>,
+          enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
+_LIBCPP_HIDE_FROM_ABI void replace_copy(
+    _ExecutionPolicy&& __policy,
+    _ForwardIterator __first,
+    _ForwardIterator __last,
+    _ForwardOutIterator __result,
+    const _Tp& __old_value,
+    const _Tp& __new_value) {
+  std::__pstl_frontend_dispatch(
+      _LIBCPP_PSTL_CUSTOMIZATION_POINT(__pstl_replace_copy),
+      [&__policy](_ForwardIterator __g_first,
+                  _ForwardIterator __g_last,
+                  _ForwardOutIterator __g_result,
+                  const _Tp& __g_old_value,
+                  const _Tp& __g_new_value) {
+        return std::replace_copy_if(
+            __policy,
+            std::move(__g_first),
+            std::move(__g_last),
+            std::move(__g_result),
+            [&](__iter_reference<_ForwardIterator> __element) { return __element == __g_old_value; },
+            __g_new_value);
+      },
+      std::move(__first),
+      std::move(__last),
+      std::move(__result),
+      __old_value,
+      __new_value);
+}
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
+
+#endif // _LIBCPP___ALGORITHM_PSTL_REPLACE_H