| /* |
| * Copyright (C) 2006, 2008 Apple Inc. All rights reserved. |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 APPLE COMPUTER, INC. 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 "APIShims.h" |
| #include "APICast.h" |
| #include "Error.h" |
| #include "JSCallbackFunction.h" |
| #include "JSClassRef.h" |
| #include "JSGlobalObject.h" |
| #include "JSLock.h" |
| #include "JSObjectRef.h" |
| #include "JSString.h" |
| #include "JSStringRef.h" |
| #include "OpaqueJSString.h" |
| #include "PropertyNameArray.h" |
| #include <wtf/Vector.h> |
| |
| namespace JSC { |
| |
| template <class Base> |
| inline JSCallbackObject<Base>* JSCallbackObject<Base>::asCallbackObject(JSValue value) |
| { |
| ASSERT(asObject(value)->inherits(&info)); |
| return static_cast<JSCallbackObject*>(asObject(value)); |
| } |
| |
| template <class Base> |
| JSCallbackObject<Base>::JSCallbackObject(ExecState* exec, NonNullPassRefPtr<Structure> structure, JSClassRef jsClass, void* data) |
| : Base(structure) |
| , m_callbackObjectData(new JSCallbackObjectData(data, jsClass)) |
| { |
| init(exec); |
| } |
| |
| // Global object constructor. |
| // FIXME: Move this into a separate JSGlobalCallbackObject class derived from this one. |
| template <class Base> |
| JSCallbackObject<Base>::JSCallbackObject(JSClassRef jsClass) |
| : Base() |
| , m_callbackObjectData(new JSCallbackObjectData(0, jsClass)) |
| { |
| ASSERT(Base::isGlobalObject()); |
| init(static_cast<JSGlobalObject*>(this)->globalExec()); |
| } |
| |
| template <class Base> |
| void JSCallbackObject<Base>::init(ExecState* exec) |
| { |
| ASSERT(exec); |
| |
| Vector<JSObjectInitializeCallback, 16> initRoutines; |
| JSClassRef jsClass = classRef(); |
| do { |
| if (JSObjectInitializeCallback initialize = jsClass->initialize) |
| initRoutines.append(initialize); |
| } while ((jsClass = jsClass->parentClass)); |
| |
| // initialize from base to derived |
| for (int i = static_cast<int>(initRoutines.size()) - 1; i >= 0; i--) { |
| APICallbackShim callbackShim(exec); |
| JSObjectInitializeCallback initialize = initRoutines[i]; |
| initialize(toRef(exec), toRef(this)); |
| } |
| } |
| |
| template <class Base> |
| JSCallbackObject<Base>::~JSCallbackObject() |
| { |
| JSObjectRef thisRef = toRef(this); |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) |
| if (JSObjectFinalizeCallback finalize = jsClass->finalize) |
| finalize(thisRef); |
| } |
| |
| template <class Base> |
| UString JSCallbackObject<Base>::className() const |
| { |
| UString thisClassName = classRef()->className(); |
| if (!thisClassName.isEmpty()) |
| return thisClassName; |
| |
| return Base::className(); |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::getOwnPropertySlot(ExecState* exec, const Identifier& propertyName, PropertySlot& slot) |
| { |
| JSContextRef ctx = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| // optional optimization to bypass getProperty in cases when we only need to know if the property exists |
| if (JSObjectHasPropertyCallback hasProperty = jsClass->hasProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| APICallbackShim callbackShim(exec); |
| if (hasProperty(ctx, thisRef, propertyNameRef.get())) { |
| slot.setCustom(this, callbackGetter); |
| return true; |
| } |
| } else if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| JSValueRef exception = 0; |
| JSValueRef value; |
| { |
| APICallbackShim callbackShim(exec); |
| value = getProperty(ctx, thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) { |
| exec->setException(toJS(exec, exception)); |
| slot.setValue(jsUndefined()); |
| return true; |
| } |
| if (value) { |
| slot.setValue(toJS(exec, value)); |
| return true; |
| } |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { |
| if (staticValues->contains(propertyName.ustring().rep())) { |
| slot.setCustom(this, staticValueGetter); |
| return true; |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { |
| if (staticFunctions->contains(propertyName.ustring().rep())) { |
| slot.setCustom(this, staticFunctionGetter); |
| return true; |
| } |
| } |
| } |
| |
| return Base::getOwnPropertySlot(exec, propertyName, slot); |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::getOwnPropertySlot(ExecState* exec, unsigned propertyName, PropertySlot& slot) |
| { |
| return getOwnPropertySlot(exec, Identifier::from(exec, propertyName), slot); |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::getOwnPropertyDescriptor(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor) |
| { |
| PropertySlot slot; |
| if (getOwnPropertySlot(exec, propertyName, slot)) { |
| // Ideally we should return an access descriptor, but returning a value descriptor is better than nothing. |
| JSValue value = slot.getValue(exec, propertyName); |
| if (!exec->hadException()) |
| descriptor.setValue(value); |
| // We don't know whether the property is configurable, but assume it is. |
| descriptor.setConfigurable(true); |
| // We don't know whether the property is enumerable (we could call getOwnPropertyNames() to find out), but assume it isn't. |
| descriptor.setEnumerable(false); |
| return true; |
| } |
| |
| return Base::getOwnPropertyDescriptor(exec, propertyName, descriptor); |
| } |
| |
| template <class Base> |
| void JSCallbackObject<Base>::put(ExecState* exec, const Identifier& propertyName, JSValue value, PutPropertySlot& slot) |
| { |
| JSContextRef ctx = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| JSValueRef valueRef = toRef(exec, value); |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| JSValueRef exception = 0; |
| bool result; |
| { |
| APICallbackShim callbackShim(exec); |
| result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception); |
| } |
| if (exception) |
| exec->setException(toJS(exec, exception)); |
| if (result || exception) |
| return; |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { |
| if (StaticValueEntry* entry = staticValues->get(propertyName.ustring().rep())) { |
| if (entry->attributes & kJSPropertyAttributeReadOnly) |
| return; |
| if (JSObjectSetPropertyCallback setProperty = entry->setProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| JSValueRef exception = 0; |
| bool result; |
| { |
| APICallbackShim callbackShim(exec); |
| result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception); |
| } |
| if (exception) |
| exec->setException(toJS(exec, exception)); |
| if (result || exception) |
| return; |
| } else |
| throwError(exec, ReferenceError, "Attempt to set a property that is not settable."); |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.ustring().rep())) { |
| if (entry->attributes & kJSPropertyAttributeReadOnly) |
| return; |
| JSCallbackObject<Base>::putDirect(propertyName, value); // put as override property |
| return; |
| } |
| } |
| } |
| |
| return Base::put(exec, propertyName, value, slot); |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::deleteProperty(ExecState* exec, const Identifier& propertyName) |
| { |
| JSContextRef ctx = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectDeletePropertyCallback deleteProperty = jsClass->deleteProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| JSValueRef exception = 0; |
| bool result; |
| { |
| APICallbackShim callbackShim(exec); |
| result = deleteProperty(ctx, thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) |
| exec->setException(toJS(exec, exception)); |
| if (result || exception) |
| return true; |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { |
| if (StaticValueEntry* entry = staticValues->get(propertyName.ustring().rep())) { |
| if (entry->attributes & kJSPropertyAttributeDontDelete) |
| return false; |
| return true; |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.ustring().rep())) { |
| if (entry->attributes & kJSPropertyAttributeDontDelete) |
| return false; |
| return true; |
| } |
| } |
| } |
| |
| return Base::deleteProperty(exec, propertyName); |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::deleteProperty(ExecState* exec, unsigned propertyName) |
| { |
| return deleteProperty(exec, Identifier::from(exec, propertyName)); |
| } |
| |
| template <class Base> |
| ConstructType JSCallbackObject<Base>::getConstructData(ConstructData& constructData) |
| { |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (jsClass->callAsConstructor) { |
| constructData.native.function = construct; |
| return ConstructTypeHost; |
| } |
| } |
| return ConstructTypeNone; |
| } |
| |
| template <class Base> |
| JSObject* JSCallbackObject<Base>::construct(ExecState* exec, JSObject* constructor, const ArgList& args) |
| { |
| JSContextRef execRef = toRef(exec); |
| JSObjectRef constructorRef = toRef(constructor); |
| |
| for (JSClassRef jsClass = static_cast<JSCallbackObject<Base>*>(constructor)->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectCallAsConstructorCallback callAsConstructor = jsClass->callAsConstructor) { |
| int argumentCount = static_cast<int>(args.size()); |
| Vector<JSValueRef, 16> arguments(argumentCount); |
| for (int i = 0; i < argumentCount; i++) |
| arguments[i] = toRef(exec, args.at(i)); |
| JSValueRef exception = 0; |
| JSObject* result; |
| { |
| APICallbackShim callbackShim(exec); |
| result = toJS(callAsConstructor(execRef, constructorRef, argumentCount, arguments.data(), &exception)); |
| } |
| if (exception) |
| exec->setException(toJS(exec, exception)); |
| return result; |
| } |
| } |
| |
| ASSERT_NOT_REACHED(); // getConstructData should prevent us from reaching here |
| return 0; |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::hasInstance(ExecState* exec, JSValue value, JSValue) |
| { |
| JSContextRef execRef = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectHasInstanceCallback hasInstance = jsClass->hasInstance) { |
| JSValueRef valueRef = toRef(exec, value); |
| JSValueRef exception = 0; |
| bool result; |
| { |
| APICallbackShim callbackShim(exec); |
| result = hasInstance(execRef, thisRef, valueRef, &exception); |
| } |
| if (exception) |
| exec->setException(toJS(exec, exception)); |
| return result; |
| } |
| } |
| return false; |
| } |
| |
| template <class Base> |
| CallType JSCallbackObject<Base>::getCallData(CallData& callData) |
| { |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (jsClass->callAsFunction) { |
| callData.native.function = call; |
| return CallTypeHost; |
| } |
| } |
| return CallTypeNone; |
| } |
| |
| template <class Base> |
| JSValue JSCallbackObject<Base>::call(ExecState* exec, JSObject* functionObject, JSValue thisValue, const ArgList& args) |
| { |
| JSContextRef execRef = toRef(exec); |
| JSObjectRef functionRef = toRef(functionObject); |
| JSObjectRef thisObjRef = toRef(thisValue.toThisObject(exec)); |
| |
| for (JSClassRef jsClass = static_cast<JSCallbackObject<Base>*>(functionObject)->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectCallAsFunctionCallback callAsFunction = jsClass->callAsFunction) { |
| int argumentCount = static_cast<int>(args.size()); |
| Vector<JSValueRef, 16> arguments(argumentCount); |
| for (int i = 0; i < argumentCount; i++) |
| arguments[i] = toRef(exec, args.at(i)); |
| JSValueRef exception = 0; |
| JSValue result; |
| { |
| APICallbackShim callbackShim(exec); |
| result = toJS(exec, callAsFunction(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception)); |
| } |
| if (exception) |
| exec->setException(toJS(exec, exception)); |
| return result; |
| } |
| } |
| |
| ASSERT_NOT_REACHED(); // getCallData should prevent us from reaching here |
| return JSValue(); |
| } |
| |
| template <class Base> |
| void JSCallbackObject<Base>::getOwnPropertyNames(ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode) |
| { |
| JSContextRef execRef = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (JSObjectGetPropertyNamesCallback getPropertyNames = jsClass->getPropertyNames) { |
| APICallbackShim callbackShim(exec); |
| getPropertyNames(execRef, thisRef, toRef(&propertyNames)); |
| } |
| |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { |
| typedef OpaqueJSClassStaticValuesTable::const_iterator iterator; |
| iterator end = staticValues->end(); |
| for (iterator it = staticValues->begin(); it != end; ++it) { |
| UString::Rep* name = it->first.get(); |
| StaticValueEntry* entry = it->second; |
| if (entry->getProperty && (!(entry->attributes & kJSPropertyAttributeDontEnum) || (mode == IncludeDontEnumProperties))) |
| propertyNames.add(Identifier(exec, name)); |
| } |
| } |
| |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { |
| typedef OpaqueJSClassStaticFunctionsTable::const_iterator iterator; |
| iterator end = staticFunctions->end(); |
| for (iterator it = staticFunctions->begin(); it != end; ++it) { |
| UString::Rep* name = it->first.get(); |
| StaticFunctionEntry* entry = it->second; |
| if (!(entry->attributes & kJSPropertyAttributeDontEnum) || (mode == IncludeDontEnumProperties)) |
| propertyNames.add(Identifier(exec, name)); |
| } |
| } |
| } |
| |
| Base::getOwnPropertyNames(exec, propertyNames, mode); |
| } |
| |
| template <class Base> |
| double JSCallbackObject<Base>::toNumber(ExecState* exec) const |
| { |
| // We need this check to guard against the case where this object is rhs of |
| // a binary expression where lhs threw an exception in its conversion to |
| // primitive |
| if (exec->hadException()) |
| return NaN; |
| JSContextRef ctx = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) |
| if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) { |
| JSValueRef exception = 0; |
| JSValueRef value; |
| { |
| APICallbackShim callbackShim(exec); |
| value = convertToType(ctx, thisRef, kJSTypeNumber, &exception); |
| } |
| if (exception) { |
| exec->setException(toJS(exec, exception)); |
| return 0; |
| } |
| |
| double dValue; |
| if (value) |
| return toJS(exec, value).getNumber(dValue) ? dValue : NaN; |
| } |
| |
| return Base::toNumber(exec); |
| } |
| |
| template <class Base> |
| UString JSCallbackObject<Base>::toString(ExecState* exec) const |
| { |
| JSContextRef ctx = toRef(exec); |
| JSObjectRef thisRef = toRef(this); |
| |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) |
| if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) { |
| JSValueRef exception = 0; |
| JSValueRef value; |
| { |
| APICallbackShim callbackShim(exec); |
| value = convertToType(ctx, thisRef, kJSTypeString, &exception); |
| } |
| if (exception) { |
| exec->setException(toJS(exec, exception)); |
| return ""; |
| } |
| if (value) |
| return toJS(exec, value).getString(exec); |
| } |
| |
| return Base::toString(exec); |
| } |
| |
| template <class Base> |
| void JSCallbackObject<Base>::setPrivate(void* data) |
| { |
| m_callbackObjectData->privateData = data; |
| } |
| |
| template <class Base> |
| void* JSCallbackObject<Base>::getPrivate() |
| { |
| return m_callbackObjectData->privateData; |
| } |
| |
| template <class Base> |
| bool JSCallbackObject<Base>::inherits(JSClassRef c) const |
| { |
| for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) |
| if (jsClass == c) |
| return true; |
| |
| return false; |
| } |
| |
| template <class Base> |
| JSValue JSCallbackObject<Base>::staticValueGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) |
| { |
| JSCallbackObject* thisObj = asCallbackObject(slotBase); |
| |
| JSObjectRef thisRef = toRef(thisObj); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) |
| if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) |
| if (StaticValueEntry* entry = staticValues->get(propertyName.ustring().rep())) |
| if (JSObjectGetPropertyCallback getProperty = entry->getProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| JSValueRef exception = 0; |
| JSValueRef value; |
| { |
| APICallbackShim callbackShim(exec); |
| value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) { |
| exec->setException(toJS(exec, exception)); |
| return jsUndefined(); |
| } |
| if (value) |
| return toJS(exec, value); |
| } |
| |
| return throwError(exec, ReferenceError, "Static value property defined with NULL getProperty callback."); |
| } |
| |
| template <class Base> |
| JSValue JSCallbackObject<Base>::staticFunctionGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) |
| { |
| JSCallbackObject* thisObj = asCallbackObject(slotBase); |
| |
| // Check for cached or override property. |
| PropertySlot slot2(thisObj); |
| if (thisObj->Base::getOwnPropertySlot(exec, propertyName, slot2)) |
| return slot2.getValue(exec, propertyName); |
| |
| for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) { |
| if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { |
| if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.ustring().rep())) { |
| if (JSObjectCallAsFunctionCallback callAsFunction = entry->callAsFunction) { |
| JSObject* o = new (exec) JSCallbackFunction(exec, callAsFunction, propertyName); |
| thisObj->putDirect(propertyName, o, entry->attributes); |
| return o; |
| } |
| } |
| } |
| } |
| |
| return throwError(exec, ReferenceError, "Static function property defined with NULL callAsFunction callback."); |
| } |
| |
| template <class Base> |
| JSValue JSCallbackObject<Base>::callbackGetter(ExecState* exec, JSValue slotBase, const Identifier& propertyName) |
| { |
| JSCallbackObject* thisObj = asCallbackObject(slotBase); |
| |
| JSObjectRef thisRef = toRef(thisObj); |
| RefPtr<OpaqueJSString> propertyNameRef; |
| |
| for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) |
| if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) { |
| if (!propertyNameRef) |
| propertyNameRef = OpaqueJSString::create(propertyName.ustring()); |
| JSValueRef exception = 0; |
| JSValueRef value; |
| { |
| APICallbackShim callbackShim(exec); |
| value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), &exception); |
| } |
| if (exception) { |
| exec->setException(toJS(exec, exception)); |
| return jsUndefined(); |
| } |
| if (value) |
| return toJS(exec, value); |
| } |
| |
| return throwError(exec, ReferenceError, "hasProperty callback returned true for a property that doesn't exist."); |
| } |
| |
| } // namespace JSC |
