Draft: apps APIs in Pepper

ppapi/cpp/dev/may_own_ptr_dev.h

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PPAPI_CPP_DEV_MAY_OWN_PTR_DEV_H_
+#define PPAPI_CPP_DEV_MAY_OWN_PTR_DEV_H_
+
+#include "ppapi/cpp/logging.h"
+
+namespace pp {
+
+enum NotOwned {
+  NOT_OWNED
+};
+
+namespace internal {
+
+template <class T>
+class MayOwnPtr {
+ public:
+  MayOwnPtr(T* value, NotOwned) : value_(value), owned_(false) {
+  }
+
+  MayOwnPtr() : value_(new T()), owned_(true) {
+  }
+
+  explicit MayOwnPtr(const T& other) : value_(new T(other)),
+                                         owned_(true) {
+  }
+
+  MayOwnPtr(const MayOwnPtr& other) : value_(new T(*other.value_)),
+                                          owned_(true) {
+  }
+
+  ~MayOwnPtr() {
+    if (owned_)
+      delete value_;
+  }
+
+  MayOwnPtr& operator=(const MayOwnPtr& other) {
+    if (this == &other)
+      return *this;
+
+    value_ = new T(*other.value_);
+    owned_ = true;
+
+    return *this;
+  }
+
+  const T* get() const {
+    return value_;
+  }
+
+  T* get() {
+    return value_;
+  }
+
+  T& operator*() const {
+    return *value_;
+  }
+
+  T* operator->() const {
+    return value_;
+  }
+
+  bool owned() const {
+    return owned_;
+  }
+
+ private:
+  T* value_;
+  bool owned_;
+};
+
+}  // namespace internal
+}  // namespace pp
+
+#endif  // PPAPI_CPP_DEV_MAY_OWN_PTR_DEV_H_