| /* |
| * 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 DOMDataStore_h |
| #define DOMDataStore_h |
| |
| #include "bindings/core/v8/DOMWrapperMap.h" |
| #include "bindings/core/v8/DOMWrapperWorld.h" |
| #include "bindings/core/v8/ScriptWrappable.h" |
| #include "bindings/core/v8/WrapperTypeInfo.h" |
| #include "wtf/Noncopyable.h" |
| #include "wtf/StdLibExtras.h" |
| #include <v8.h> |
| |
| namespace blink { |
| |
| class Node; |
| |
| class DOMDataStore { |
| WTF_MAKE_NONCOPYABLE(DOMDataStore); |
| public: |
| explicit DOMDataStore(bool isMainWorld); |
| ~DOMDataStore(); |
| |
| static DOMDataStore& current(v8::Isolate*); |
| |
| // We can use a wrapper stored in a ScriptWrappable when we're in the main world. |
| // This method does the fast check if we're in the main world. If this method returns true, |
| // it is guaranteed that we're in the main world. On the other hand, if this method returns |
| // false, nothing is guaranteed (we might be in the main world). |
| template<typename T> |
| static bool canUseScriptWrappable(T* object) |
| { |
| return !DOMWrapperWorld::isolatedWorldsExist() |
| && !canExistInWorker(object) |
| && ScriptWrappable::wrapperCanBeStoredInObject(object); |
| } |
| |
| template<typename V8T, typename T, typename Wrappable> |
| static bool setReturnValueFromWrapperFast(v8::ReturnValue<v8::Value> returnValue, T* object, v8::Local<v8::Object> holder, Wrappable* wrappable) |
| { |
| if (canUseScriptWrappable(object)) { |
| ScriptWrappable::assertWrapperSanity<V8T, T>(object, object); |
| return ScriptWrappable::fromObject(object)->setReturnValue(returnValue); |
| } |
| // The second fastest way to check if we're in the main world is to check if |
| // the wrappable's wrapper is the same as the holder. |
| // FIXME: Investigate if it's worth having this check for performance. |
| if (holderContainsWrapper(holder, wrappable)) { |
| if (ScriptWrappable::wrapperCanBeStoredInObject(object)) { |
| ScriptWrappable::assertWrapperSanity<V8T, T>(object, object); |
| return ScriptWrappable::fromObject(object)->setReturnValue(returnValue); |
| } |
| return DOMWrapperWorld::mainWorld().domDataStore().m_wrapperMap.setReturnValueFrom(returnValue, V8T::toScriptWrappableBase(object)); |
| } |
| return current(returnValue.GetIsolate()).template setReturnValueFrom<V8T>(returnValue, object); |
| } |
| |
| static bool setReturnValueFastNonTemplate(v8::ReturnValue<v8::Value> returnValue, ScriptWrappable* object, v8::Local<v8::Object> holder, const ScriptWrappable* wrappable) |
| { |
| // The second fastest way to check if we're in the main world is to check if |
| // the wrappable's wrapper is the same as the holder. |
| // FIXME: Investigate if it's worth having this check for performance. |
| if (holderContainsWrapper(holder, wrappable)) |
| return object->setReturnValue(returnValue); |
| return current(returnValue.GetIsolate()).setReturnValueFromNonTemplate(returnValue, object); |
| } |
| |
| static bool setReturnValueFastNonTemplate(v8::ReturnValue<v8::Value> returnValue, Node* node, v8::Local<v8::Object> holder, const ScriptWrappable* wrappable) |
| { |
| if (canUseScriptWrappable(node) |
| // The second fastest way to check if we're in the main world is to |
| // check if the wrappable's wrapper is the same as the holder. |
| // FIXME: Investigate if it's worth having this check for performance. |
| || holderContainsWrapper(holder, wrappable)) |
| return ScriptWrappable::fromNode(node)->setReturnValue(returnValue); |
| return current(returnValue.GetIsolate()).setReturnValueFromNonTemplate(returnValue, ScriptWrappable::fromNode(node)); |
| } |
| |
| template<typename V8T, typename T> |
| static bool setReturnValueFromWrapper(v8::ReturnValue<v8::Value> returnValue, T* object) |
| { |
| if (canUseScriptWrappable(object)) { |
| ScriptWrappable::assertWrapperSanity<V8T, T>(object, object); |
| return ScriptWrappable::fromObject(object)->setReturnValue(returnValue); |
| } |
| return current(returnValue.GetIsolate()).template setReturnValueFrom<V8T>(returnValue, object); |
| } |
| |
| static bool setReturnValueNonTemplate(v8::ReturnValue<v8::Value> returnValue, ScriptWrappableBase* object) |
| { |
| return current(returnValue.GetIsolate()).setReturnValueFromNonTemplate(returnValue, object); |
| } |
| |
| static bool setReturnValueNonTemplate(v8::ReturnValue<v8::Value> returnValue, ScriptWrappable* object) |
| { |
| return current(returnValue.GetIsolate()).setReturnValueFromNonTemplate(returnValue, object); |
| } |
| |
| static bool setReturnValueNonTemplate(v8::ReturnValue<v8::Value> returnValue, Node* object) |
| { |
| if (canUseScriptWrappable(object)) |
| return ScriptWrappable::fromNode(object)->setReturnValue(returnValue); |
| return current(returnValue.GetIsolate()).setReturnValueFromNonTemplate(returnValue, ScriptWrappable::fromNode(object)); |
| } |
| |
| template<typename V8T, typename T> |
| static bool setReturnValueFromWrapperForMainWorld(v8::ReturnValue<v8::Value> returnValue, T* object) |
| { |
| if (ScriptWrappable::wrapperCanBeStoredInObject(object)) |
| return ScriptWrappable::fromObject(object)->setReturnValue(returnValue); |
| return DOMWrapperWorld::mainWorld().domDataStore().m_wrapperMap.setReturnValueFrom(returnValue, V8T::toScriptWrappableBase(object)); |
| } |
| |
| static bool setReturnValueForMainWorldNonTemplate(v8::ReturnValue<v8::Value> returnValue, ScriptWrappable* object) |
| { |
| return object->setReturnValue(returnValue); |
| } |
| |
| template<typename V8T, typename T> |
| static v8::Handle<v8::Object> getWrapper(T* object, v8::Isolate* isolate) |
| { |
| if (canUseScriptWrappable(object)) { |
| v8::Handle<v8::Object> result = ScriptWrappable::fromObject(object)->newLocalWrapper(isolate); |
| // Security: always guard against malicious tampering. |
| ScriptWrappable::assertWrapperSanity<V8T, T>(result, object); |
| return result; |
| } |
| return current(isolate).template get<V8T>(object, isolate); |
| } |
| |
| static v8::Handle<v8::Object> getWrapperNonTemplate(ScriptWrappableBase* object, v8::Isolate* isolate) |
| { |
| return current(isolate).getNonTemplate(object, isolate); |
| } |
| |
| static v8::Handle<v8::Object> getWrapperNonTemplate(ScriptWrappable* object, v8::Isolate* isolate) |
| { |
| return current(isolate).getNonTemplate(object, isolate); |
| } |
| |
| static v8::Handle<v8::Object> getWrapperNonTemplate(Node* node, v8::Isolate* isolate) |
| { |
| if (canUseScriptWrappable(node)) { |
| v8::Handle<v8::Object> result = ScriptWrappable::fromNode(node)->newLocalWrapper(isolate); |
| // Security: always guard against malicious tampering. |
| ScriptWrappable::fromNode(node)->assertWrapperSanity(result); |
| return result; |
| } |
| return current(isolate).getNonTemplate(ScriptWrappable::fromNode(node), isolate); |
| } |
| |
| template<typename V8T, typename T> |
| static void setWrapperReference(const v8::Persistent<v8::Object>& parent, T* child, v8::Isolate* isolate) |
| { |
| if (canUseScriptWrappable(child)) { |
| ScriptWrappable::assertWrapperSanity<V8T, T>(child, child); |
| ScriptWrappable::fromObject(child)->setReference(parent, isolate); |
| return; |
| } |
| current(isolate).template setReference<V8T>(parent, child, isolate); |
| } |
| |
| template<typename V8T, typename T> |
| static void setWrapper(T* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| if (canUseScriptWrappable(object)) { |
| ScriptWrappable::fromObject(object)->setWrapper(wrapper, isolate, wrapperTypeInfo); |
| return; |
| } |
| return current(isolate).template set<V8T>(object, wrapper, isolate, wrapperTypeInfo); |
| } |
| |
| static void setWrapperNonTemplate(ScriptWrappableBase* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| return current(isolate).setNonTemplate(object, wrapper, isolate, wrapperTypeInfo); |
| } |
| |
| static void setWrapperNonTemplate(ScriptWrappable* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| return current(isolate).setNonTemplate(object, wrapper, isolate, wrapperTypeInfo); |
| } |
| |
| static void setWrapperNonTemplate(Node* node, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| if (canUseScriptWrappable(node)) { |
| ScriptWrappable::fromNode(node)->setWrapper(wrapper, isolate, wrapperTypeInfo); |
| return; |
| } |
| return current(isolate).setNonTemplate(ScriptWrappable::fromNode(node), wrapper, isolate, wrapperTypeInfo); |
| } |
| |
| template<typename V8T, typename T> |
| static bool containsWrapper(T* object, v8::Isolate* isolate) |
| { |
| return current(isolate).template containsWrapper<V8T>(object); |
| } |
| |
| static bool containsWrapperNonTemplate(ScriptWrappableBase* object, v8::Isolate* isolate) |
| { |
| return current(isolate).containsWrapperNonTemplate(object); |
| } |
| |
| static bool containsWrapperNonTemplate(ScriptWrappable* object, v8::Isolate* isolate) |
| { |
| return current(isolate).containsWrapperNonTemplate(object); |
| } |
| |
| template<typename V8T, typename T> |
| v8::Handle<v8::Object> get(T* object, v8::Isolate* isolate) |
| { |
| if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld) |
| return ScriptWrappable::fromObject(object)->newLocalWrapper(isolate); |
| return m_wrapperMap.newLocal(V8T::toScriptWrappableBase(object), isolate); |
| } |
| |
| v8::Handle<v8::Object> getNonTemplate(ScriptWrappableBase* object, v8::Isolate* isolate) |
| { |
| return m_wrapperMap.newLocal(object->toScriptWrappableBase(), isolate); |
| } |
| |
| v8::Handle<v8::Object> getNonTemplate(ScriptWrappable* object, v8::Isolate* isolate) |
| { |
| if (m_isMainWorld) |
| return object->newLocalWrapper(isolate); |
| return m_wrapperMap.newLocal(object->toScriptWrappableBase(), isolate); |
| } |
| |
| template<typename V8T, typename T> |
| void setReference(const v8::Persistent<v8::Object>& parent, T* child, v8::Isolate* isolate) |
| { |
| if (ScriptWrappable::wrapperCanBeStoredInObject(child) && m_isMainWorld) { |
| ScriptWrappable::fromObject(child)->setReference(parent, isolate); |
| return; |
| } |
| m_wrapperMap.setReference(parent, V8T::toScriptWrappableBase(child), isolate); |
| } |
| |
| template<typename V8T, typename T> |
| bool setReturnValueFrom(v8::ReturnValue<v8::Value> returnValue, T* object) |
| { |
| if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld) |
| return ScriptWrappable::fromObject(object)->setReturnValue(returnValue); |
| return m_wrapperMap.setReturnValueFrom(returnValue, V8T::toScriptWrappableBase(object)); |
| } |
| |
| bool setReturnValueFromNonTemplate(v8::ReturnValue<v8::Value> returnValue, ScriptWrappableBase* object) |
| { |
| return m_wrapperMap.setReturnValueFrom(returnValue, object); |
| } |
| |
| bool setReturnValueFromNonTemplate(v8::ReturnValue<v8::Value> returnValue, ScriptWrappable* object) |
| { |
| if (m_isMainWorld) |
| return object->setReturnValue(returnValue); |
| return m_wrapperMap.setReturnValueFrom(returnValue, object->toScriptWrappableBase()); |
| } |
| |
| template<typename V8T, typename T> |
| bool containsWrapper(T* object) |
| { |
| if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld) |
| return ScriptWrappable::fromObject(object)->containsWrapper(); |
| return m_wrapperMap.containsKey(V8T::toScriptWrappableBase(object)); |
| } |
| |
| bool containsWrapperNonTemplate(ScriptWrappableBase* object) |
| { |
| return m_wrapperMap.containsKey(object->toScriptWrappableBase()); |
| } |
| |
| bool containsWrapperNonTemplate(ScriptWrappable* object) |
| { |
| if (m_isMainWorld) |
| return object->containsWrapper(); |
| return m_wrapperMap.containsKey(object->toScriptWrappableBase()); |
| } |
| |
| private: |
| template<typename V8T, typename T> |
| void set(T* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| ASSERT(object); |
| ASSERT(!wrapper.IsEmpty()); |
| if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld) { |
| ScriptWrappable::fromObject(object)->setWrapper(wrapper, isolate, wrapperTypeInfo); |
| return; |
| } |
| m_wrapperMap.set(V8T::toScriptWrappableBase(object), wrapper, wrapperTypeInfo); |
| } |
| |
| void setNonTemplate(ScriptWrappableBase* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| ASSERT(object); |
| ASSERT(!wrapper.IsEmpty()); |
| m_wrapperMap.set(object->toScriptWrappableBase(), wrapper, wrapperTypeInfo); |
| } |
| |
| void setNonTemplate(ScriptWrappable* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo) |
| { |
| ASSERT(object); |
| ASSERT(!wrapper.IsEmpty()); |
| if (m_isMainWorld) { |
| object->setWrapper(wrapper, isolate, wrapperTypeInfo); |
| return; |
| } |
| m_wrapperMap.set(object->toScriptWrappableBase(), wrapper, wrapperTypeInfo); |
| } |
| |
| static bool canExistInWorker(void*) { return true; } |
| static bool canExistInWorker(Node*) { return false; } |
| |
| static bool holderContainsWrapper(v8::Local<v8::Object>, void*) |
| { |
| return false; |
| } |
| |
| static bool holderContainsWrapper(v8::Local<v8::Object> holder, const ScriptWrappable* wrappable) |
| { |
| // Verify our assumptions about the main world. |
| ASSERT(wrappable); |
| ASSERT(!wrappable->containsWrapper() || !wrappable->isEqualTo(holder) || current(v8::Isolate::GetCurrent()).m_isMainWorld); |
| return wrappable->isEqualTo(holder); |
| } |
| |
| bool m_isMainWorld; |
| DOMWrapperMap<ScriptWrappableBase> m_wrapperMap; |
| }; |
| |
| template<> |
| inline void DOMWrapperMap<ScriptWrappableBase>::PersistentValueMapTraits::Dispose( |
| v8::Isolate* isolate, |
| v8::UniquePersistent<v8::Object> value, |
| ScriptWrappableBase* key) |
| { |
| RELEASE_ASSERT(!value.IsEmpty()); // See crbug.com/368095. |
| releaseObject(v8::Local<v8::Object>::New(isolate, value)); |
| } |
| |
| } // namespace blink |
| |
| #endif // DOMDataStore_h |