DerivedSources/WebCore/JSMutationObserver.cpp - third_party/webkit - Git at Google

 /*
     This file is part of the WebKit open source project.
     This file has been generated by generate-bindings.pl. DO NOT MODIFY!

     This library is free software; you can redistribute it and/or
     modify it under the terms of the GNU Library General Public
     License as published by the Free Software Foundation; either
     version 2 of the License, or (at your option) any later version.

     This library is distributed in the hope that it will be useful,
     but WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Library General Public License for more details.

     You should have received a copy of the GNU Library General Public License
     along with this library; see the file COPYING.LIB.  If not, write to
     the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     Boston, MA 02110-1301, USA.
 */

 #include "config.h"
 #include "JSMutationObserver.h"

 #include "ExceptionCode.h"
 #include "JSDOMBinding.h"
 #include "JSDOMConstructor.h"
 #include "JSDOMConvert.h"
 #include "JSMutationRecord.h"
 #include "JSNode.h"
 #include "MutationRecord.h"
 #include <runtime/Error.h>
 #include <runtime/FunctionPrototype.h>
 #include <runtime/JSArray.h>
 #include <wtf/GetPtr.h>

 using namespace JSC;

 namespace WebCore {

 template<> Optional<MutationObserver::Init> convertDictionary<MutationObserver::Init>(ExecState& state, JSValue value)
 {
     VM& vm = state.vm();
     auto throwScope = DECLARE_THROW_SCOPE(vm);
     if (value.isUndefinedOrNull())
         return MutationObserver::Init { false, { }, { }, false, { }, { }, { } };
     auto* object = value.getObject();
     if (UNLIKELY(!object || object->type() == RegExpObjectType)) {
         throwTypeError(&state, throwScope);
         return Nullopt;
     }
     auto childList = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "childList")), false);
     RETURN_IF_EXCEPTION(throwScope, Nullopt);
     auto attributes = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "attributes")));
     RETURN_IF_EXCEPTION(throwScope, Nullopt);
     auto characterData = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "characterData")));
     RETURN_IF_EXCEPTION(throwScope, Nullopt);
     auto subtree = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "subtree")), false);
     RETURN_IF_EXCEPTION(throwScope, Nullopt);
     auto attributeOldValue = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "attributeOldValue")));
     RETURN_IF_EXCEPTION(throwScope, Nullopt);
     auto characterDataOldValue = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "characterDataOldValue")));
     RETURN_IF_EXCEPTION(throwScope, Nullopt);
     auto attributeFilter = convertOptional<Vector<String>>(state, object->get(&state, Identifier::fromString(&state, "attributeFilter")));
     return MutationObserver::Init { WTFMove(childList), WTFMove(attributes), WTFMove(characterData), WTFMove(subtree), WTFMove(attributeOldValue), WTFMove(characterDataOldValue), WTFMove(attributeFilter) };
 }

 // Functions

 JSC::EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionObserve(JSC::ExecState*);
 JSC::EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionTakeRecords(JSC::ExecState*);
 JSC::EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionDisconnect(JSC::ExecState*);

 // Attributes

 JSC::EncodedJSValue jsMutationObserverConstructor(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);
 bool setJSMutationObserverConstructor(JSC::ExecState*, JSC::EncodedJSValue, JSC::EncodedJSValue);

 class JSMutationObserverPrototype : public JSC::JSNonFinalObject {
 public:
     typedef JSC::JSNonFinalObject Base;
     static JSMutationObserverPrototype* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure)
     {
         JSMutationObserverPrototype* ptr = new (NotNull, JSC::allocateCell<JSMutationObserverPrototype>(vm.heap)) JSMutationObserverPrototype(vm, globalObject, structure);
         ptr->finishCreation(vm);
         return ptr;
     }

     DECLARE_INFO;
     static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
     {
         return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
     }

 private:
     JSMutationObserverPrototype(JSC::VM& vm, JSC::JSGlobalObject*, JSC::Structure* structure)
         : JSC::JSNonFinalObject(vm, structure)
     {
     }

     void finishCreation(JSC::VM&);
 };

 typedef JSDOMConstructor<JSMutationObserver> JSMutationObserverConstructor;

 template<> JSC::EncodedJSValue JSC_HOST_CALL JSMutationObserverConstructor::construct(JSC::ExecState* exec)
 {
     ASSERT(exec);
     return constructJSMutationObserver(*exec);
 }

 template<> JSValue JSMutationObserverConstructor::prototypeForStructure(JSC::VM& vm, const JSDOMGlobalObject& globalObject)
 {
     UNUSED_PARAM(vm);
     return globalObject.functionPrototype();
 }

 template<> void JSMutationObserverConstructor::initializeProperties(VM& vm, JSDOMGlobalObject& globalObject)
 {
     putDirect(vm, vm.propertyNames->prototype, JSMutationObserver::prototype(vm, &globalObject), DontDelete | ReadOnly | DontEnum);
     putDirect(vm, vm.propertyNames->name, jsNontrivialString(&vm, String(ASCIILiteral("MutationObserver"))), ReadOnly | DontEnum);
     putDirect(vm, vm.propertyNames->length, jsNumber(1), ReadOnly | DontEnum);
 }

 template<> const ClassInfo JSMutationObserverConstructor::s_info = { "MutationObserver", &Base::s_info, 0, CREATE_METHOD_TABLE(JSMutationObserverConstructor) };

 /* Hash table for prototype */

 static const HashTableValue JSMutationObserverPrototypeTableValues[] =
 {
     { "constructor", DontEnum, NoIntrinsic, { (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsMutationObserverConstructor), (intptr_t) static_cast<PutPropertySlot::PutValueFunc>(setJSMutationObserverConstructor) } },
     { "observe", JSC::Function, NoIntrinsic, { (intptr_t)static_cast<NativeFunction>(jsMutationObserverPrototypeFunctionObserve), (intptr_t) (2) } },
     { "takeRecords", JSC::Function, NoIntrinsic, { (intptr_t)static_cast<NativeFunction>(jsMutationObserverPrototypeFunctionTakeRecords), (intptr_t) (0) } },
     { "disconnect", JSC::Function, NoIntrinsic, { (intptr_t)static_cast<NativeFunction>(jsMutationObserverPrototypeFunctionDisconnect), (intptr_t) (0) } },
 };

 const ClassInfo JSMutationObserverPrototype::s_info = { "MutationObserverPrototype", &Base::s_info, 0, CREATE_METHOD_TABLE(JSMutationObserverPrototype) };

 void JSMutationObserverPrototype::finishCreation(VM& vm)
 {
     Base::finishCreation(vm);
     reifyStaticProperties(vm, JSMutationObserverPrototypeTableValues, *this);
 }

 const ClassInfo JSMutationObserver::s_info = { "MutationObserver", &Base::s_info, 0, CREATE_METHOD_TABLE(JSMutationObserver) };

 JSMutationObserver::JSMutationObserver(Structure* structure, JSDOMGlobalObject& globalObject, Ref<MutationObserver>&& impl)
     : JSDOMWrapper<MutationObserver>(structure, globalObject, WTFMove(impl))
 {
 }

 JSObject* JSMutationObserver::createPrototype(VM& vm, JSGlobalObject* globalObject)
 {
     return JSMutationObserverPrototype::create(vm, globalObject, JSMutationObserverPrototype::createStructure(vm, globalObject, globalObject->objectPrototype()));
 }

 JSObject* JSMutationObserver::prototype(VM& vm, JSGlobalObject* globalObject)
 {
     return getDOMPrototype<JSMutationObserver>(vm, globalObject);
 }

 void JSMutationObserver::destroy(JSC::JSCell* cell)
 {
     JSMutationObserver* thisObject = static_cast<JSMutationObserver*>(cell);
     thisObject->JSMutationObserver::~JSMutationObserver();
 }

 EncodedJSValue jsMutationObserverConstructor(ExecState* state, EncodedJSValue thisValue, PropertyName)
 {
     VM& vm = state->vm();
     auto throwScope = DECLARE_THROW_SCOPE(vm);
     JSMutationObserverPrototype* domObject = jsDynamicCast<JSMutationObserverPrototype*>(JSValue::decode(thisValue));
     if (UNLIKELY(!domObject))
         return throwVMTypeError(state, throwScope);
     return JSValue::encode(JSMutationObserver::getConstructor(state->vm(), domObject->globalObject()));
 }

 bool setJSMutationObserverConstructor(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)
 {
     VM& vm = state->vm();
     auto throwScope = DECLARE_THROW_SCOPE(vm);
     JSValue value = JSValue::decode(encodedValue);
     JSMutationObserverPrototype* domObject = jsDynamicCast<JSMutationObserverPrototype*>(JSValue::decode(thisValue));
     if (UNLIKELY(!domObject)) {
         throwVMTypeError(state, throwScope);
         return false;
     }
     // Shadowing a built-in constructor
     return domObject->putDirect(state->vm(), state->propertyNames().constructor, value);
 }

 JSValue JSMutationObserver::getConstructor(VM& vm, const JSGlobalObject* globalObject)
 {
     return getDOMConstructor<JSMutationObserverConstructor>(vm, *jsCast<const JSDOMGlobalObject*>(globalObject));
 }

 EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionObserve(ExecState* state)
 {
     VM& vm = state->vm();
     auto throwScope = DECLARE_THROW_SCOPE(vm);
     UNUSED_PARAM(throwScope);
     JSValue thisValue = state->thisValue();
     auto castedThis = jsDynamicCast<JSMutationObserver*>(thisValue);
     if (UNLIKELY(!castedThis))
         return throwThisTypeError(*state, throwScope, "MutationObserver", "observe");
     ASSERT_GC_OBJECT_INHERITS(castedThis, JSMutationObserver::info());
     auto& impl = castedThis->wrapped();
     if (UNLIKELY(state->argumentCount() < 2))
         return throwVMError(state, throwScope, createNotEnoughArgumentsError(state));
     ExceptionCode ec = 0;
     auto target = JSNode::toWrapped(state->uncheckedArgument(0));
     if (UNLIKELY(!target))
         return throwArgumentTypeError(*state, throwScope, 0, "target", "MutationObserver", "observe", "Node");
     auto options = convertDictionary<MutationObserver::Init>(*state, state->uncheckedArgument(1));
     RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
     impl.observe(*target, options.value(), ec);
     setDOMException(state, throwScope, ec);
     return JSValue::encode(jsUndefined());
 }

 EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionTakeRecords(ExecState* state)
 {
     VM& vm = state->vm();
     auto throwScope = DECLARE_THROW_SCOPE(vm);
     UNUSED_PARAM(throwScope);
     JSValue thisValue = state->thisValue();
     auto castedThis = jsDynamicCast<JSMutationObserver*>(thisValue);
     if (UNLIKELY(!castedThis))
         return throwThisTypeError(*state, throwScope, "MutationObserver", "takeRecords");
     ASSERT_GC_OBJECT_INHERITS(castedThis, JSMutationObserver::info());
     auto& impl = castedThis->wrapped();
     JSValue result = jsArray(state, castedThis->globalObject(), impl.takeRecords());
     return JSValue::encode(result);
 }

 EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionDisconnect(ExecState* state)
 {
     VM& vm = state->vm();
     auto throwScope = DECLARE_THROW_SCOPE(vm);
     UNUSED_PARAM(throwScope);
     JSValue thisValue = state->thisValue();
     auto castedThis = jsDynamicCast<JSMutationObserver*>(thisValue);
     if (UNLIKELY(!castedThis))
         return throwThisTypeError(*state, throwScope, "MutationObserver", "disconnect");
     ASSERT_GC_OBJECT_INHERITS(castedThis, JSMutationObserver::info());
     auto& impl = castedThis->wrapped();
     impl.disconnect();
     return JSValue::encode(jsUndefined());
 }

 void JSMutationObserverOwner::finalize(JSC::Handle<JSC::Unknown> handle, void* context)
 {
     auto* jsMutationObserver = jsCast<JSMutationObserver*>(handle.slot()->asCell());
     auto& world = *static_cast<DOMWrapperWorld*>(context);
     uncacheWrapper(world, &jsMutationObserver->wrapped(), jsMutationObserver);
 }

 JSC::JSValue toJSNewlyCreated(JSC::ExecState*, JSDOMGlobalObject* globalObject, Ref<MutationObserver>&& impl)
 {
 #if COMPILER(CLANG)
     // If you hit this failure the interface definition has the ImplementationLacksVTable
     // attribute. You should remove that attribute. If the class has subclasses
     // that may be passed through this toJS() function you should use the SkipVTableValidation
     // attribute to MutationObserver.
     static_assert(!__is_polymorphic(MutationObserver), "MutationObserver is polymorphic but the IDL claims it is not");
 #endif
     return createWrapper<MutationObserver>(globalObject, WTFMove(impl));
 }

 JSC::JSValue toJS(JSC::ExecState* state, JSDOMGlobalObject* globalObject, MutationObserver& impl)
 {
     return wrap(state, globalObject, impl);
 }

 MutationObserver* JSMutationObserver::toWrapped(JSC::JSValue value)
 {
     if (auto* wrapper = jsDynamicCast<JSMutationObserver*>(value))
         return &wrapper->wrapped();
     return nullptr;
 }

 }
	/*
	This file is part of the WebKit open source project.
	This file has been generated by generate-bindings.pl. DO NOT MODIFY!

	This library is free software; you can redistribute it and/or
	modify it under the terms of the GNU Library General Public
	License as published by the Free Software Foundation; either
	version 2 of the License, or (at your option) any later version.

	This library is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	Library General Public License for more details.

	You should have received a copy of the GNU Library General Public License
	along with this library; see the file COPYING.LIB. If not, write to
	the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
	Boston, MA 02110-1301, USA.
	*/

	#include "config.h"
	#include "JSMutationObserver.h"

	#include "ExceptionCode.h"
	#include "JSDOMBinding.h"
	#include "JSDOMConstructor.h"
	#include "JSDOMConvert.h"
	#include "JSMutationRecord.h"
	#include "JSNode.h"
	#include "MutationRecord.h"
	#include <runtime/Error.h>
	#include <runtime/FunctionPrototype.h>
	#include <runtime/JSArray.h>
	#include <wtf/GetPtr.h>

	using namespace JSC;

	namespace WebCore {

	template<> Optional<MutationObserver::Init> convertDictionary<MutationObserver::Init>(ExecState& state, JSValue value)
	{
	VM& vm = state.vm();
	auto throwScope = DECLARE_THROW_SCOPE(vm);
	if (value.isUndefinedOrNull())
	return MutationObserver::Init { false, { }, { }, false, { }, { }, { } };
	auto* object = value.getObject();
	if (UNLIKELY(!object \|\| object->type() == RegExpObjectType)) {
	throwTypeError(&state, throwScope);
	return Nullopt;
	}
	auto childList = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "childList")), false);
	RETURN_IF_EXCEPTION(throwScope, Nullopt);
	auto attributes = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "attributes")));
	RETURN_IF_EXCEPTION(throwScope, Nullopt);
	auto characterData = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "characterData")));
	RETURN_IF_EXCEPTION(throwScope, Nullopt);
	auto subtree = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "subtree")), false);
	RETURN_IF_EXCEPTION(throwScope, Nullopt);
	auto attributeOldValue = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "attributeOldValue")));
	RETURN_IF_EXCEPTION(throwScope, Nullopt);
	auto characterDataOldValue = convertOptional<bool>(state, object->get(&state, Identifier::fromString(&state, "characterDataOldValue")));
	RETURN_IF_EXCEPTION(throwScope, Nullopt);
	auto attributeFilter = convertOptional<Vector<String>>(state, object->get(&state, Identifier::fromString(&state, "attributeFilter")));
	return MutationObserver::Init { WTFMove(childList), WTFMove(attributes), WTFMove(characterData), WTFMove(subtree), WTFMove(attributeOldValue), WTFMove(characterDataOldValue), WTFMove(attributeFilter) };
	}

	// Functions

	JSC::EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionObserve(JSC::ExecState*);
	JSC::EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionTakeRecords(JSC::ExecState*);
	JSC::EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionDisconnect(JSC::ExecState*);

	// Attributes

	JSC::EncodedJSValue jsMutationObserverConstructor(JSC::ExecState*, JSC::EncodedJSValue, JSC::PropertyName);
	bool setJSMutationObserverConstructor(JSC::ExecState*, JSC::EncodedJSValue, JSC::EncodedJSValue);

	class JSMutationObserverPrototype : public JSC::JSNonFinalObject {
	public:
	typedef JSC::JSNonFinalObject Base;
	static JSMutationObserverPrototype* create(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::Structure* structure)
	{
	JSMutationObserverPrototype* ptr = new (NotNull, JSC::allocateCell<JSMutationObserverPrototype>(vm.heap)) JSMutationObserverPrototype(vm, globalObject, structure);
	ptr->finishCreation(vm);
	return ptr;
	}

	DECLARE_INFO;
	static JSC::Structure* createStructure(JSC::VM& vm, JSC::JSGlobalObject* globalObject, JSC::JSValue prototype)
	{
	return JSC::Structure::create(vm, globalObject, prototype, JSC::TypeInfo(JSC::ObjectType, StructureFlags), info());
	}

	private:
	JSMutationObserverPrototype(JSC::VM& vm, JSC::JSGlobalObject, JSC::Structure structure)
	: JSC::JSNonFinalObject(vm, structure)
	{
	}

	void finishCreation(JSC::VM&);
	};

	typedef JSDOMConstructor<JSMutationObserver> JSMutationObserverConstructor;

	template<> JSC::EncodedJSValue JSC_HOST_CALL JSMutationObserverConstructor::construct(JSC::ExecState* exec)
	{
	ASSERT(exec);
	return constructJSMutationObserver(*exec);
	}

	template<> JSValue JSMutationObserverConstructor::prototypeForStructure(JSC::VM& vm, const JSDOMGlobalObject& globalObject)
	{
	UNUSED_PARAM(vm);
	return globalObject.functionPrototype();
	}

	template<> void JSMutationObserverConstructor::initializeProperties(VM& vm, JSDOMGlobalObject& globalObject)
	{
	putDirect(vm, vm.propertyNames->prototype, JSMutationObserver::prototype(vm, &globalObject), DontDelete \| ReadOnly \| DontEnum);
	putDirect(vm, vm.propertyNames->name, jsNontrivialString(&vm, String(ASCIILiteral("MutationObserver"))), ReadOnly \| DontEnum);
	putDirect(vm, vm.propertyNames->length, jsNumber(1), ReadOnly \| DontEnum);
	}

	template<> const ClassInfo JSMutationObserverConstructor::s_info = { "MutationObserver", &Base::s_info, 0, CREATE_METHOD_TABLE(JSMutationObserverConstructor) };

	/* Hash table for prototype */

	static const HashTableValue JSMutationObserverPrototypeTableValues[] =
	{
	{ "constructor", DontEnum, NoIntrinsic, { (intptr_t)static_cast<PropertySlot::GetValueFunc>(jsMutationObserverConstructor), (intptr_t) static_cast<PutPropertySlot::PutValueFunc>(setJSMutationObserverConstructor) } },
	{ "observe", JSC::Function, NoIntrinsic, { (intptr_t)static_cast<NativeFunction>(jsMutationObserverPrototypeFunctionObserve), (intptr_t) (2) } },
	{ "takeRecords", JSC::Function, NoIntrinsic, { (intptr_t)static_cast<NativeFunction>(jsMutationObserverPrototypeFunctionTakeRecords), (intptr_t) (0) } },
	{ "disconnect", JSC::Function, NoIntrinsic, { (intptr_t)static_cast<NativeFunction>(jsMutationObserverPrototypeFunctionDisconnect), (intptr_t) (0) } },
	};

	const ClassInfo JSMutationObserverPrototype::s_info = { "MutationObserverPrototype", &Base::s_info, 0, CREATE_METHOD_TABLE(JSMutationObserverPrototype) };

	void JSMutationObserverPrototype::finishCreation(VM& vm)
	{
	Base::finishCreation(vm);
	reifyStaticProperties(vm, JSMutationObserverPrototypeTableValues, *this);
	}

	const ClassInfo JSMutationObserver::s_info = { "MutationObserver", &Base::s_info, 0, CREATE_METHOD_TABLE(JSMutationObserver) };

	JSMutationObserver::JSMutationObserver(Structure* structure, JSDOMGlobalObject& globalObject, Ref<MutationObserver>&& impl)
	: JSDOMWrapper<MutationObserver>(structure, globalObject, WTFMove(impl))
	{
	}

	JSObject* JSMutationObserver::createPrototype(VM& vm, JSGlobalObject* globalObject)
	{
	return JSMutationObserverPrototype::create(vm, globalObject, JSMutationObserverPrototype::createStructure(vm, globalObject, globalObject->objectPrototype()));
	}

	JSObject* JSMutationObserver::prototype(VM& vm, JSGlobalObject* globalObject)
	{
	return getDOMPrototype<JSMutationObserver>(vm, globalObject);
	}

	void JSMutationObserver::destroy(JSC::JSCell* cell)
	{
	JSMutationObserver* thisObject = static_cast<JSMutationObserver*>(cell);
	thisObject->JSMutationObserver::~JSMutationObserver();
	}

	EncodedJSValue jsMutationObserverConstructor(ExecState* state, EncodedJSValue thisValue, PropertyName)
	{
	VM& vm = state->vm();
	auto throwScope = DECLARE_THROW_SCOPE(vm);
	JSMutationObserverPrototype* domObject = jsDynamicCast<JSMutationObserverPrototype*>(JSValue::decode(thisValue));
	if (UNLIKELY(!domObject))
	return throwVMTypeError(state, throwScope);
	return JSValue::encode(JSMutationObserver::getConstructor(state->vm(), domObject->globalObject()));
	}

	bool setJSMutationObserverConstructor(ExecState* state, EncodedJSValue thisValue, EncodedJSValue encodedValue)
	{
	VM& vm = state->vm();
	auto throwScope = DECLARE_THROW_SCOPE(vm);
	JSValue value = JSValue::decode(encodedValue);
	JSMutationObserverPrototype* domObject = jsDynamicCast<JSMutationObserverPrototype*>(JSValue::decode(thisValue));
	if (UNLIKELY(!domObject)) {
	throwVMTypeError(state, throwScope);
	return false;
	}
	// Shadowing a built-in constructor
	return domObject->putDirect(state->vm(), state->propertyNames().constructor, value);
	}

	JSValue JSMutationObserver::getConstructor(VM& vm, const JSGlobalObject* globalObject)
	{
	return getDOMConstructor<JSMutationObserverConstructor>(vm, jsCast<const JSDOMGlobalObject>(globalObject));
	}

	EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionObserve(ExecState* state)
	{
	VM& vm = state->vm();
	auto throwScope = DECLARE_THROW_SCOPE(vm);
	UNUSED_PARAM(throwScope);
	JSValue thisValue = state->thisValue();
	auto castedThis = jsDynamicCast<JSMutationObserver*>(thisValue);
	if (UNLIKELY(!castedThis))
	return throwThisTypeError(*state, throwScope, "MutationObserver", "observe");
	ASSERT_GC_OBJECT_INHERITS(castedThis, JSMutationObserver::info());
	auto& impl = castedThis->wrapped();
	if (UNLIKELY(state->argumentCount() < 2))
	return throwVMError(state, throwScope, createNotEnoughArgumentsError(state));
	ExceptionCode ec = 0;
	auto target = JSNode::toWrapped(state->uncheckedArgument(0));
	if (UNLIKELY(!target))
	return throwArgumentTypeError(*state, throwScope, 0, "target", "MutationObserver", "observe", "Node");
	auto options = convertDictionary<MutationObserver::Init>(*state, state->uncheckedArgument(1));
	RETURN_IF_EXCEPTION(throwScope, encodedJSValue());
	impl.observe(*target, options.value(), ec);
	setDOMException(state, throwScope, ec);
	return JSValue::encode(jsUndefined());
	}

	EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionTakeRecords(ExecState* state)
	{
	VM& vm = state->vm();
	auto throwScope = DECLARE_THROW_SCOPE(vm);
	UNUSED_PARAM(throwScope);
	JSValue thisValue = state->thisValue();
	auto castedThis = jsDynamicCast<JSMutationObserver*>(thisValue);
	if (UNLIKELY(!castedThis))
	return throwThisTypeError(*state, throwScope, "MutationObserver", "takeRecords");
	ASSERT_GC_OBJECT_INHERITS(castedThis, JSMutationObserver::info());
	auto& impl = castedThis->wrapped();
	JSValue result = jsArray(state, castedThis->globalObject(), impl.takeRecords());
	return JSValue::encode(result);
	}

	EncodedJSValue JSC_HOST_CALL jsMutationObserverPrototypeFunctionDisconnect(ExecState* state)
	{
	VM& vm = state->vm();
	auto throwScope = DECLARE_THROW_SCOPE(vm);
	UNUSED_PARAM(throwScope);
	JSValue thisValue = state->thisValue();
	auto castedThis = jsDynamicCast<JSMutationObserver*>(thisValue);
	if (UNLIKELY(!castedThis))
	return throwThisTypeError(*state, throwScope, "MutationObserver", "disconnect");
	ASSERT_GC_OBJECT_INHERITS(castedThis, JSMutationObserver::info());
	auto& impl = castedThis->wrapped();
	impl.disconnect();
	return JSValue::encode(jsUndefined());
	}

	void JSMutationObserverOwner::finalize(JSC::Handle<JSC::Unknown> handle, void* context)
	{
	auto* jsMutationObserver = jsCast<JSMutationObserver*>(handle.slot()->asCell());
	auto& world = static_cast<DOMWrapperWorld>(context);
	uncacheWrapper(world, &jsMutationObserver->wrapped(), jsMutationObserver);
	}

	JSC::JSValue toJSNewlyCreated(JSC::ExecState, JSDOMGlobalObject globalObject, Ref<MutationObserver>&& impl)
	{
	#if COMPILER(CLANG)
	// If you hit this failure the interface definition has the ImplementationLacksVTable
	// attribute. You should remove that attribute. If the class has subclasses
	// that may be passed through this toJS() function you should use the SkipVTableValidation
	// attribute to MutationObserver.
	static_assert(!__is_polymorphic(MutationObserver), "MutationObserver is polymorphic but the IDL claims it is not");
	#endif
	return createWrapper<MutationObserver>(globalObject, WTFMove(impl));
	}

	JSC::JSValue toJS(JSC::ExecState* state, JSDOMGlobalObject* globalObject, MutationObserver& impl)
	{
	return wrap(state, globalObject, impl);
	}

	MutationObserver* JSMutationObserver::toWrapped(JSC::JSValue value)
	{
	if (auto* wrapper = jsDynamicCast<JSMutationObserver*>(value))
	return &wrapper->wrapped();
	return nullptr;
	}

	}