diff options
Diffstat (limited to 'chromium/third_party/blink/renderer/platform/bindings/shared_persistent.h')
| -rw-r--r-- | chromium/third_party/blink/renderer/platform/bindings/shared_persistent.h | 129 |
1 files changed, 0 insertions, 129 deletions
diff --git a/chromium/third_party/blink/renderer/platform/bindings/shared_persistent.h b/chromium/third_party/blink/renderer/platform/bindings/shared_persistent.h deleted file mode 100644 index 03a87e9e10c..00000000000 --- a/chromium/third_party/blink/renderer/platform/bindings/shared_persistent.h +++ /dev/null @@ -1,129 +0,0 @@ -/* - * Copyright (C) 2009 Google Inc. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * * Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above - * copyright notice, this list of conditions and the following disclaimer - * in the documentation and/or other materials provided with the - * distribution. - * * Neither the name of Google Inc. nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_SHARED_PERSISTENT_H_ -#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_SHARED_PERSISTENT_H_ - -#include "base/memory/scoped_refptr.h" -#include "third_party/blink/renderer/platform/bindings/dom_wrapper_world.h" -#include "third_party/blink/renderer/platform/bindings/scoped_persistent.h" -#include "third_party/blink/renderer/platform/wtf/ref_counted.h" -#include "v8/include/v8.h" - -namespace blink { - -// A ref counted version of ScopedPersistent. This class is intended for use by -// ScriptValue and not for normal use. Consider using ScopedPersistent directly -// instead. -// TODO(crbug.com/1029738): Remove once bug is fixed. -template <typename T> -class SharedPersistent : public RefCounted<SharedPersistent<T>> { - USING_FAST_MALLOC(SharedPersistent); - - public: - static scoped_refptr<SharedPersistent<T>> Create(v8::Isolate* isolate, - v8::Local<T> value) { - return base::AdoptRef(new SharedPersistent<T>(isolate, value)); - } - - // Returns the V8 reference. Crashes if |world_| is set and it is - // different from |target_script_state|'s world. - v8::Local<T> Get(ScriptState* target_script_state) const { - DCHECK(!value_.IsEmpty()); - if (world_) { - CHECK_EQ(world_.get(), &target_script_state->World()); - } - return value_.NewLocal(target_script_state->GetIsolate()); - } - - // Returns a V8 reference that is safe to access in |target_script_state|. - // The return value may be a cloned object. - v8::Local<T> GetAcrossWorld(ScriptState* target_script_state) const { - CHECK(world_); - DCHECK(!value_.IsEmpty()); - - v8::Isolate* isolate = target_script_state->GetIsolate(); - - if (world_ == &target_script_state->World()) - return value_.NewLocal(isolate); - - // If |v8_reference| is a v8::Object, clones |v8_reference| in the context - // of |target_script_state| and returns it. Otherwise returns - // |v8_reference| itself that is already safe to access in - // |target_script_state|. - - v8::Local<v8::Value> value = value_.NewLocal(isolate); - DCHECK(value->IsObject()); - return value.template As<T>(); - } - - bool IsEmpty() { return value_.IsEmpty(); } - - bool operator==(const SharedPersistent<T>& other) { - return value_ == other.value_; - } - - private: - explicit SharedPersistent(v8::Isolate* isolate, v8::Local<T> value) - : value_(isolate, value) { - DCHECK(!value.IsEmpty()); - // Basically, |world_| is a world when this V8 reference is created. - // However, when this V8 reference isn't created in context and value is - // object, we set |world_| to a value's creation cotext's world. - if (isolate->InContext()) { - world_ = &DOMWrapperWorld::Current(isolate); - if (value->IsObject()) { - v8::Local<v8::Context> context = - value.template As<v8::Object>()->CreationContext(); - // Creation context is null if the value is a remote object. - if (!context.IsEmpty()) { - ScriptState* script_state = ScriptState::From(context); - CHECK_EQ(world_.get(), &script_state->World()); - } - } - } else if (value->IsObject()) { - ScriptState* script_state = - ScriptState::From(value.template As<v8::Object>()->CreationContext()); - world_ = &script_state->World(); - } - } - - ScopedPersistent<T> value_; - // The world of the current context at the time when |value_| was set. - // It's guaranteed that, if |value_| is a v8::Object, the world of the - // creation context of |value_| is the same as |world_|. - scoped_refptr<const DOMWrapperWorld> world_; - - DISALLOW_COPY_AND_ASSIGN(SharedPersistent); -}; - -} // namespace blink - -#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_BINDINGS_SHARED_PERSISTENT_H_ |