third_party/WebKit/Source/bindings/core/v8/ScriptWrappable.cpp

// Copyright 2014 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.

#include "bindings/core/v8/ScriptWrappable.h"

#include "bindings/core/v8/DOMDataStore.h"
#include "bindings/core/v8/ScriptWrappableVisitor.h"
#include "bindings/core/v8/V8DOMWrapper.h"

namespace blink {

struct SameSizeAsScriptWrappable {
  virtual ~SameSizeAsScriptWrappable() {}
  v8::Persistent<v8::Object> m_mainWorldWrapper;
};

static_assert(sizeof(ScriptWrappable) <= sizeof(SameSizeAsScriptWrappable),
              "ScriptWrappable should stay small");

v8::Local<v8::Object> ScriptWrappable::wrap(
    v8::Isolate* isolate,
    v8::Local<v8::Object> creationContext) {
  const WrapperTypeInfo* wrapperTypeInfo = this->wrapperTypeInfo();

  ASSERT(!DOMDataStore::containsWrapper(this, isolate));

  v8::Local<v8::Object> wrapper =
      V8DOMWrapper::createWrapper(isolate, creationContext, wrapperTypeInfo);
  DCHECK(!wrapper.IsEmpty());
  return associateWithWrapper(isolate, wrapperTypeInfo, wrapper);
}

v8::Local<v8::Object> ScriptWrappable::associateWithWrapper(
    v8::Isolate* isolate,
    const WrapperTypeInfo* wrapperTypeInfo,
    v8::Local<v8::Object> wrapper) {
  return V8DOMWrapper::associateObjectWithWrapper(isolate, this,
                                                  wrapperTypeInfo, wrapper);
}

void ScriptWrappable::markWrapper(const WrapperVisitor* visitor) const {
  if (containsWrapper())
    visitor->markWrapper(&m_mainWorldWrapper);
}

}  // namespace blink