bindings: Adds DOMArrayBuffer, etc. as thin wrappers for ArrayBuffer, etc.

Source/bindings/core/v8/custom/V8ArrayBufferCustom.cpp

-/*
- * 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.
- */
-
-#include "config.h"
-#include "bindings/core/v8/custom/V8ArrayBufferCustom.h"
-
-#include "bindings/core/v8/V8Binding.h"
-#include "wtf/ArrayBuffer.h"
-#include "wtf/StdLibExtras.h"
-
-namespace blink {
-
-using namespace WTF;
-
-V8ArrayBufferDeallocationObserver* V8ArrayBufferDeallocationObserver::instanceTemplate()
-{
-    DEFINE_STATIC_LOCAL(V8ArrayBufferDeallocationObserver, deallocationObserver, ());
-    return &deallocationObserver;
-}
-
-const WrapperTypeInfo V8ArrayBuffer::wrapperTypeInfo = {
-    gin::kEmbedderBlink,
-    0,
-    V8ArrayBuffer::refObject,
-    V8ArrayBuffer::derefObject,
-    V8ArrayBuffer::trace,
-    0, 0, 0, 0, 0, 0,
-    WrapperTypeInfo::WrapperTypeObjectPrototype,
-    WrapperTypeInfo::ObjectClassId,
-    WrapperTypeInfo::Independent,
-    WrapperTypeInfo::RefCountedObject
-};
-
-bool V8ArrayBuffer::hasInstance(v8::Handle<v8::Value> value, v8::Isolate*)
-{
-    return value->IsArrayBuffer();
-}
-
-void V8ArrayBuffer::refObject(ScriptWrappableBase* internalPointer)
-{
-    toImpl(internalPointer)->ref();
-}
-
-void V8ArrayBuffer::derefObject(ScriptWrappableBase* internalPointer)
-{
-    toImpl(internalPointer)->deref();
-}
-
-v8::Handle<v8::Object> V8ArrayBuffer::createWrapper(PassRefPtr<ArrayBuffer> impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
-{
-    ASSERT(impl.get());
-    ASSERT(!DOMDataStore::containsWrapper<V8ArrayBuffer>(impl.get(), isolate));
-
-    v8::Handle<v8::Object> wrapper = v8::ArrayBuffer::New(isolate, impl->data(), impl->byteLength());
-    impl->setDeallocationObserver(V8ArrayBufferDeallocationObserver::instanceTemplate());
-
-    V8DOMWrapper::associateObjectWithWrapper<V8ArrayBuffer>(impl, &wrapperTypeInfo, wrapper, isolate);
-    return wrapper;
-}
-
-ArrayBuffer* V8ArrayBuffer::toImpl(v8::Handle<v8::Object> object)
-{
-    ASSERT(object->IsArrayBuffer());
-    v8::Local<v8::ArrayBuffer> v8buffer = object.As<v8::ArrayBuffer>();
-    if (v8buffer->IsExternal()) {
-        RELEASE_ASSERT(toWrapperTypeInfo(object)->ginEmbedder == gin::kEmbedderBlink);
-        return reinterpret_cast<ArrayBuffer*>(blink::toScriptWrappableBase(object));
-    }
-
-    v8::ArrayBuffer::Contents v8Contents = v8buffer->Externalize();
-    ArrayBufferContents contents(v8Contents.Data(), v8Contents.ByteLength(),
-        V8ArrayBufferDeallocationObserver::instanceTemplate());
-    RefPtr<ArrayBuffer> buffer = ArrayBuffer::create(contents);
-    V8DOMWrapper::associateObjectWithWrapper<V8ArrayBuffer>(buffer.release(), &wrapperTypeInfo, object, v8::Isolate::GetCurrent());
-
-    return reinterpret_cast<ArrayBuffer*>(blink::toScriptWrappableBase(object));
-}
-
-ArrayBuffer* V8ArrayBuffer::toImplWithTypeCheck(v8::Isolate* isolate, v8::Handle<v8::Value> value)
-{
-    return V8ArrayBuffer::hasInstance(value, isolate) ? V8ArrayBuffer::toImpl(v8::Handle<v8::Object>::Cast(value)) : 0;
-}
-
-template<>
-v8::Handle<v8::Value> toV8NoInline(ArrayBuffer* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
-{
-    return toV8(impl, creationContext, isolate);
-}
-
-} // namespace blink