Import Mbed OS hard-float snapshot

platform/cxxsupport/mstd_memory

@@ -0,0 +1,138 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2019 ARM Limited
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MSTD_MEMORY_
+#define MSTD_MEMORY_
+
+/* <mstd_memory>
+ *
+ * - includes toolchain's <memory>
+ * - For ARM C 5, C++11/14 features:
+ *   - std::align
+ *   - std::addressof
+ *   - std::uninitialized_copy_n
+ *   - std::unique_ptr, std::make_unique, std::default_delete
+ * - For all toolchains, C++17 backports:
+ *   - mstd::uninitialized_default_construct, mstd::uninitialized_value_construct
+ *   - mstd::uninitialized_move, mstd::uninitialized_move_n
+ *   - mstd::destroy_at, mstd::destroy, mstd::destroy_n
+ */
+
+#include <memory>
+
+#include <mstd_type_traits>
+#include <mstd_utility> // std::pair
+#include <mstd_iterator> // std::iterator_traits
+
+namespace mstd {
+    using std::align;
+    using std::allocator;
+    using std::addressof;
+
+    // [uninitialized.construct.default] (C++17)
+    template <class ForwardIterator, class Size>
+    void uninitialized_default_construct(ForwardIterator first, ForwardIterator last) {
+        for (; first != last; ++first) {
+            ::new (static_cast<void*>(addressof(*first)))
+                    typename std::iterator_traits<ForwardIterator>::value_type;
+        }
+    }
+
+    template <class ForwardIterator, class Size>
+    ForwardIterator uninitialized_default_construct_n(ForwardIterator first, Size n) {
+        for (; n; ++first, --n) {
+            ::new (static_cast<void*>(addressof(*first)))
+                    typename std::iterator_traits<ForwardIterator>::value_type;
+        }
+
+        return first;
+    }
+
+    // [uninitialized.construct.value] (C++17)
+    template <class ForwardIterator, class Size>
+    void uninitialized_value_construct(ForwardIterator first, ForwardIterator last) {
+        for (; first != last; ++first) {
+            ::new (static_cast<void*>(addressof(*first)))
+                    typename std::iterator_traits<ForwardIterator>::value_type();
+        }
+    }
+
+    template <class ForwardIterator, class Size>
+    ForwardIterator uninitialized_value_construct_n(ForwardIterator first, Size n) {
+        for (; n; ++first, --n) {
+            ::new (static_cast<void*>(addressof(*first)))
+                    typename std::iterator_traits<ForwardIterator>::value_type();
+        }
+
+        return first;
+    }
+
+    // [uninitialized.move] (C++17)
+    template <class InputIterator, class ForwardIterator>
+    ForwardIterator uninitialized_move(InputIterator first, InputIterator last, ForwardIterator result) {
+        for (; first != last; ++result, (void) ++first) {
+            ::new (static_cast<void*>(addressof(*result)))
+                  typename std::iterator_traits<ForwardIterator>::value_type(move(*first));
+        }
+
+        return result;
+    }
+
+    template <class InputIterator, class Size, class ForwardIterator>
+    std::pair<InputIterator, ForwardIterator> uninitialized_move_n(InputIterator first, Size n, ForwardIterator result) {
+        for ( ; n > 0; ++result, (void) ++first, --n) {
+            ::new (static_cast<void*>(addressof(*result)))
+                  typename std::iterator_traits<ForwardIterator>::value_type(std::move(*first));
+        }
+
+        return { first, result };
+    }
+
+    using std::uninitialized_copy;
+    using std::uninitialized_copy_n;
+    using std::uninitialized_fill;
+    using std::uninitialized_fill_n;
+
+    // [specialized.destroy] (C++17)
+    template <class T>
+    void destroy_at(T *location)
+    {
+        location->~T();
+    }
+
+    template <class ForwardIterator>
+    void destroy(ForwardIterator first, ForwardIterator last)
+    {
+        for (; first != last; ++first) {
+            destroy_at(addressof(*first));
+        }
+    }
+
+    template <class ForwardIterator, class Size>
+    ForwardIterator destroy_n(ForwardIterator first, Size n)
+    {
+        for (; n > 0; (void)++first, --n) {
+            destroy_at(addressof(*first));
+        }
+        return first;
+    }
+
+    using std::default_delete;
+    using std::unique_ptr;
+    using std::make_unique;
+}
+
+#endif // MSTD_MEMORY_