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Diffstat (limited to 'Source/JavaScriptCore/API/JSCallbackObjectFunctions.h')
| -rw-r--r-- | Source/JavaScriptCore/API/JSCallbackObjectFunctions.h | 662 |
1 files changed, 662 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/API/JSCallbackObjectFunctions.h b/Source/JavaScriptCore/API/JSCallbackObjectFunctions.h new file mode 100644 index 000000000..585aab194 --- /dev/null +++ b/Source/JavaScriptCore/API/JSCallbackObjectFunctions.h @@ -0,0 +1,662 @@ +/* + * 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 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 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 "APICast.h" +#include "Error.h" +#include "ExceptionHelpers.h" +#include "JSCallbackFunction.h" +#include "JSClassRef.h" +#include "JSFunction.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 Parent> +inline JSCallbackObject<Parent>* JSCallbackObject<Parent>::asCallbackObject(JSValue value) +{ + ASSERT(asObject(value)->inherits(info())); + return jsCast<JSCallbackObject*>(asObject(value)); +} + +template <class Parent> +inline JSCallbackObject<Parent>* JSCallbackObject<Parent>::asCallbackObject(EncodedJSValue value) +{ + ASSERT(asObject(JSValue::decode(value))->inherits(info())); + return jsCast<JSCallbackObject*>(asObject(JSValue::decode(value))); +} + +template <class Parent> +JSCallbackObject<Parent>::JSCallbackObject(ExecState* exec, Structure* structure, JSClassRef jsClass, void* data) + : Parent(exec->vm(), structure) + , m_callbackObjectData(std::make_unique<JSCallbackObjectData>(data, jsClass)) +{ +} + +// Global object constructor. +// FIXME: Move this into a separate JSGlobalCallbackObject class derived from this one. +template <class Parent> +JSCallbackObject<Parent>::JSCallbackObject(VM& vm, JSClassRef jsClass, Structure* structure) + : Parent(vm, structure) + , m_callbackObjectData(std::make_unique<JSCallbackObjectData>(nullptr, jsClass)) +{ +} + +template <class Parent> +JSCallbackObject<Parent>::~JSCallbackObject() +{ + JSObjectRef thisRef = toRef(static_cast<JSObject*>(this)); + for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectFinalizeCallback finalize = jsClass->finalize) + finalize(thisRef); + } +} + +template <class Parent> +void JSCallbackObject<Parent>::finishCreation(ExecState* exec) +{ + Base::finishCreation(exec->vm()); + ASSERT(Parent::inherits(info())); + init(exec); +} + +// This is just for Global object, so we can assume that Base::finishCreation is JSGlobalObject::finishCreation. +template <class Parent> +void JSCallbackObject<Parent>::finishCreation(VM& vm) +{ + ASSERT(Parent::inherits(info())); + ASSERT(Parent::isGlobalObject()); + Base::finishCreation(vm); + init(jsCast<JSGlobalObject*>(this)->globalExec()); +} + +template <class Parent> +void JSCallbackObject<Parent>::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--) { + JSLock::DropAllLocks dropAllLocks(exec); + JSObjectInitializeCallback initialize = initRoutines[i]; + initialize(toRef(exec), toRef(this)); + } +} + +template <class Parent> +String JSCallbackObject<Parent>::className(const JSObject* object) +{ + const JSCallbackObject* thisObject = jsCast<const JSCallbackObject*>(object); + String thisClassName = thisObject->classRef()->className(); + if (!thisClassName.isEmpty()) + return thisClassName; + + return Parent::className(object); +} + +template <class Parent> +bool JSCallbackObject<Parent>::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot& slot) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object); + JSContextRef ctx = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + RefPtr<OpaqueJSString> propertyNameRef; + + if (StringImpl* name = propertyName.uid()) { + for (JSClassRef jsClass = thisObject->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(name); + JSLock::DropAllLocks dropAllLocks(exec); + if (hasProperty(ctx, thisRef, propertyNameRef.get())) { + slot.setCustom(thisObject, ReadOnly | DontEnum, callbackGetter); + return true; + } + } else if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) { + if (!propertyNameRef) + propertyNameRef = OpaqueJSString::create(name); + JSValueRef exception = 0; + JSValueRef value; + { + JSLock::DropAllLocks dropAllLocks(exec); + value = getProperty(ctx, thisRef, propertyNameRef.get(), &exception); + } + if (exception) { + exec->vm().throwException(exec, toJS(exec, exception)); + slot.setValue(thisObject, ReadOnly | DontEnum, jsUndefined()); + return true; + } + if (value) { + slot.setValue(thisObject, ReadOnly | DontEnum, toJS(exec, value)); + return true; + } + } + + if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { + if (staticValues->contains(name)) { + JSValue value = thisObject->getStaticValue(exec, propertyName); + if (value) { + slot.setValue(thisObject, ReadOnly | DontEnum, value); + return true; + } + } + } + + if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { + if (staticFunctions->contains(name)) { + slot.setCustom(thisObject, ReadOnly | DontEnum, staticFunctionGetter); + return true; + } + } + } + } + + return Parent::getOwnPropertySlot(thisObject, exec, propertyName, slot); +} + +template <class Parent> +bool JSCallbackObject<Parent>::getOwnPropertySlotByIndex(JSObject* object, ExecState* exec, unsigned propertyName, PropertySlot& slot) +{ + return object->methodTable()->getOwnPropertySlot(object, exec, Identifier::from(exec, propertyName), slot); +} + +template <class Parent> +JSValue JSCallbackObject<Parent>::defaultValue(const JSObject* object, ExecState* exec, PreferredPrimitiveType hint) +{ + const JSCallbackObject* thisObject = jsCast<const JSCallbackObject*>(object); + JSContextRef ctx = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + ::JSType jsHint = hint == PreferString ? kJSTypeString : kJSTypeNumber; + + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectConvertToTypeCallback convertToType = jsClass->convertToType) { + JSValueRef exception = 0; + JSValueRef result = convertToType(ctx, thisRef, jsHint, &exception); + if (exception) { + exec->vm().throwException(exec, toJS(exec, exception)); + return jsUndefined(); + } + if (result) + return toJS(exec, result); + } + } + + return Parent::defaultValue(object, exec, hint); +} + +template <class Parent> +void JSCallbackObject<Parent>::put(JSCell* cell, ExecState* exec, PropertyName propertyName, JSValue value, PutPropertySlot& slot) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); + JSContextRef ctx = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + RefPtr<OpaqueJSString> propertyNameRef; + JSValueRef valueRef = toRef(exec, value); + + if (StringImpl* name = propertyName.uid()) { + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) { + if (!propertyNameRef) + propertyNameRef = OpaqueJSString::create(name); + JSValueRef exception = 0; + bool result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + if (result || exception) + return; + } + + if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { + if (StaticValueEntry* entry = staticValues->get(name)) { + if (entry->attributes & kJSPropertyAttributeReadOnly) + return; + if (JSObjectSetPropertyCallback setProperty = entry->setProperty) { + JSValueRef exception = 0; + bool result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = setProperty(ctx, thisRef, entry->propertyNameRef.get(), valueRef, &exception); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + if (result || exception) + return; + } + } + } + + if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { + if (StaticFunctionEntry* entry = staticFunctions->get(name)) { + PropertySlot getSlot(thisObject); + if (Parent::getOwnPropertySlot(thisObject, exec, propertyName, getSlot)) + return Parent::put(thisObject, exec, propertyName, value, slot); + if (entry->attributes & kJSPropertyAttributeReadOnly) + return; + thisObject->JSCallbackObject<Parent>::putDirect(exec->vm(), propertyName, value); // put as override property + return; + } + } + } + } + + return Parent::put(thisObject, exec, propertyName, value, slot); +} + +template <class Parent> +void JSCallbackObject<Parent>::putByIndex(JSCell* cell, ExecState* exec, unsigned propertyIndex, JSValue value, bool shouldThrow) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); + JSContextRef ctx = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + RefPtr<OpaqueJSString> propertyNameRef; + JSValueRef valueRef = toRef(exec, value); + Identifier propertyName = Identifier::from(exec, propertyIndex); + + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectSetPropertyCallback setProperty = jsClass->setProperty) { + if (!propertyNameRef) + propertyNameRef = OpaqueJSString::create(propertyName.impl()); + JSValueRef exception = 0; + bool result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = setProperty(ctx, thisRef, propertyNameRef.get(), valueRef, &exception); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + if (result || exception) + return; + } + + if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { + if (StaticValueEntry* entry = staticValues->get(propertyName.impl())) { + if (entry->attributes & kJSPropertyAttributeReadOnly) + return; + if (JSObjectSetPropertyCallback setProperty = entry->setProperty) { + JSValueRef exception = 0; + bool result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = setProperty(ctx, thisRef, entry->propertyNameRef.get(), valueRef, &exception); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + if (result || exception) + return; + } + } + } + + if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { + if (StaticFunctionEntry* entry = staticFunctions->get(propertyName.impl())) { + if (entry->attributes & kJSPropertyAttributeReadOnly) + return; + break; + } + } + } + + return Parent::putByIndex(thisObject, exec, propertyIndex, value, shouldThrow); +} + +template <class Parent> +bool JSCallbackObject<Parent>::deleteProperty(JSCell* cell, ExecState* exec, PropertyName propertyName) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); + JSContextRef ctx = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + RefPtr<OpaqueJSString> propertyNameRef; + + if (StringImpl* name = propertyName.uid()) { + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectDeletePropertyCallback deleteProperty = jsClass->deleteProperty) { + if (!propertyNameRef) + propertyNameRef = OpaqueJSString::create(name); + JSValueRef exception = 0; + bool result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = deleteProperty(ctx, thisRef, propertyNameRef.get(), &exception); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + if (result || exception) + return true; + } + + if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { + if (StaticValueEntry* entry = staticValues->get(name)) { + if (entry->attributes & kJSPropertyAttributeDontDelete) + return false; + return true; + } + } + + if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { + if (StaticFunctionEntry* entry = staticFunctions->get(name)) { + if (entry->attributes & kJSPropertyAttributeDontDelete) + return false; + return true; + } + } + } + } + + return Parent::deleteProperty(thisObject, exec, propertyName); +} + +template <class Parent> +bool JSCallbackObject<Parent>::deletePropertyByIndex(JSCell* cell, ExecState* exec, unsigned propertyName) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); + return thisObject->methodTable()->deleteProperty(thisObject, exec, Identifier::from(exec, propertyName)); +} + +template <class Parent> +ConstructType JSCallbackObject<Parent>::getConstructData(JSCell* cell, ConstructData& constructData) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (jsClass->callAsConstructor) { + constructData.native.function = construct; + return ConstructTypeHost; + } + } + return ConstructTypeNone; +} + +template <class Parent> +EncodedJSValue JSCallbackObject<Parent>::construct(ExecState* exec) +{ + JSObject* constructor = exec->callee(); + JSContextRef execRef = toRef(exec); + JSObjectRef constructorRef = toRef(constructor); + + for (JSClassRef jsClass = jsCast<JSCallbackObject<Parent>*>(constructor)->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectCallAsConstructorCallback callAsConstructor = jsClass->callAsConstructor) { + size_t argumentCount = exec->argumentCount(); + Vector<JSValueRef, 16> arguments; + arguments.reserveInitialCapacity(argumentCount); + for (size_t i = 0; i < argumentCount; ++i) + arguments.uncheckedAppend(toRef(exec, exec->uncheckedArgument(i))); + JSValueRef exception = 0; + JSObject* result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = toJS(callAsConstructor(execRef, constructorRef, argumentCount, arguments.data(), &exception)); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + return JSValue::encode(result); + } + } + + RELEASE_ASSERT_NOT_REACHED(); // getConstructData should prevent us from reaching here + return JSValue::encode(JSValue()); +} + +template <class Parent> +bool JSCallbackObject<Parent>::customHasInstance(JSObject* object, ExecState* exec, JSValue value) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object); + JSContextRef execRef = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectHasInstanceCallback hasInstance = jsClass->hasInstance) { + JSValueRef valueRef = toRef(exec, value); + JSValueRef exception = 0; + bool result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = hasInstance(execRef, thisRef, valueRef, &exception); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + return result; + } + } + return false; +} + +template <class Parent> +CallType JSCallbackObject<Parent>::getCallData(JSCell* cell, CallData& callData) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(cell); + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (jsClass->callAsFunction) { + callData.native.function = call; + return CallTypeHost; + } + } + return CallTypeNone; +} + +template <class Parent> +EncodedJSValue JSCallbackObject<Parent>::call(ExecState* exec) +{ + JSContextRef execRef = toRef(exec); + JSObjectRef functionRef = toRef(exec->callee()); + JSObjectRef thisObjRef = toRef(jsCast<JSObject*>(exec->thisValue().toThis(exec, NotStrictMode))); + + for (JSClassRef jsClass = jsCast<JSCallbackObject<Parent>*>(toJS(functionRef))->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectCallAsFunctionCallback callAsFunction = jsClass->callAsFunction) { + size_t argumentCount = exec->argumentCount(); + Vector<JSValueRef, 16> arguments; + arguments.reserveInitialCapacity(argumentCount); + for (size_t i = 0; i < argumentCount; ++i) + arguments.uncheckedAppend(toRef(exec, exec->uncheckedArgument(i))); + JSValueRef exception = 0; + JSValue result; + { + JSLock::DropAllLocks dropAllLocks(exec); + result = toJS(exec, callAsFunction(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception)); + } + if (exception) + exec->vm().throwException(exec, toJS(exec, exception)); + return JSValue::encode(result); + } + } + + RELEASE_ASSERT_NOT_REACHED(); // getCallData should prevent us from reaching here + return JSValue::encode(JSValue()); +} + +template <class Parent> +void JSCallbackObject<Parent>::getOwnNonIndexPropertyNames(JSObject* object, ExecState* exec, PropertyNameArray& propertyNames, EnumerationMode mode) +{ + JSCallbackObject* thisObject = jsCast<JSCallbackObject*>(object); + JSContextRef execRef = toRef(exec); + JSObjectRef thisRef = toRef(thisObject); + + for (JSClassRef jsClass = thisObject->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectGetPropertyNamesCallback getPropertyNames = jsClass->getPropertyNames) { + JSLock::DropAllLocks dropAllLocks(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) { + StringImpl* name = it->key.get(); + StaticValueEntry* entry = it->value.get(); + if (entry->getProperty && (!(entry->attributes & kJSPropertyAttributeDontEnum) || mode.includeDontEnumProperties())) { + ASSERT(!name->isSymbol()); + propertyNames.add(Identifier::fromString(exec, String(name))); + } + } + } + + if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { + typedef OpaqueJSClassStaticFunctionsTable::const_iterator iterator; + iterator end = staticFunctions->end(); + for (iterator it = staticFunctions->begin(); it != end; ++it) { + StringImpl* name = it->key.get(); + StaticFunctionEntry* entry = it->value.get(); + if (!(entry->attributes & kJSPropertyAttributeDontEnum) || mode.includeDontEnumProperties()) { + ASSERT(!name->isSymbol()); + propertyNames.add(Identifier::fromString(exec, String(name))); + } + } + } + } + + Parent::getOwnNonIndexPropertyNames(thisObject, exec, propertyNames, mode); +} + +template <class Parent> +void JSCallbackObject<Parent>::setPrivate(void* data) +{ + m_callbackObjectData->privateData = data; +} + +template <class Parent> +void* JSCallbackObject<Parent>::getPrivate() +{ + return m_callbackObjectData->privateData; +} + +template <class Parent> +bool JSCallbackObject<Parent>::inherits(JSClassRef c) const +{ + for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { + if (jsClass == c) + return true; + } + return false; +} + +template <class Parent> +JSValue JSCallbackObject<Parent>::getStaticValue(ExecState* exec, PropertyName propertyName) +{ + JSObjectRef thisRef = toRef(this); + + if (StringImpl* name = propertyName.uid()) { + for (JSClassRef jsClass = classRef(); jsClass; jsClass = jsClass->parentClass) { + if (OpaqueJSClassStaticValuesTable* staticValues = jsClass->staticValues(exec)) { + if (StaticValueEntry* entry = staticValues->get(name)) { + if (JSObjectGetPropertyCallback getProperty = entry->getProperty) { + JSValueRef exception = 0; + JSValueRef value; + { + JSLock::DropAllLocks dropAllLocks(exec); + value = getProperty(toRef(exec), thisRef, entry->propertyNameRef.get(), &exception); + } + if (exception) { + exec->vm().throwException(exec, toJS(exec, exception)); + return jsUndefined(); + } + if (value) + return toJS(exec, value); + } + } + } + } + } + + return JSValue(); +} + +template <class Parent> +EncodedJSValue JSCallbackObject<Parent>::staticFunctionGetter(ExecState* exec, JSObject* slotParent, EncodedJSValue, PropertyName propertyName) +{ + JSCallbackObject* thisObj = asCallbackObject(slotParent); + + // Check for cached or override property. + PropertySlot slot2(thisObj); + if (Parent::getOwnPropertySlot(thisObj, exec, propertyName, slot2)) + return JSValue::encode(slot2.getValue(exec, propertyName)); + + if (StringImpl* name = propertyName.uid()) { + for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (OpaqueJSClassStaticFunctionsTable* staticFunctions = jsClass->staticFunctions(exec)) { + if (StaticFunctionEntry* entry = staticFunctions->get(name)) { + if (JSObjectCallAsFunctionCallback callAsFunction = entry->callAsFunction) { + VM& vm = exec->vm(); + JSObject* o = JSCallbackFunction::create(vm, thisObj->globalObject(), callAsFunction, name); + thisObj->putDirect(vm, propertyName, o, entry->attributes); + return JSValue::encode(o); + } + } + } + } + } + + return JSValue::encode(exec->vm().throwException(exec, createReferenceError(exec, ASCIILiteral("Static function property defined with NULL callAsFunction callback.")))); +} + +template <class Parent> +EncodedJSValue JSCallbackObject<Parent>::callbackGetter(ExecState* exec, JSObject* slotParent, EncodedJSValue, PropertyName propertyName) +{ + JSCallbackObject* thisObj = asCallbackObject(slotParent); + + JSObjectRef thisRef = toRef(thisObj); + RefPtr<OpaqueJSString> propertyNameRef; + + if (StringImpl* name = propertyName.uid()) { + for (JSClassRef jsClass = thisObj->classRef(); jsClass; jsClass = jsClass->parentClass) { + if (JSObjectGetPropertyCallback getProperty = jsClass->getProperty) { + if (!propertyNameRef) + propertyNameRef = OpaqueJSString::create(name); + JSValueRef exception = 0; + JSValueRef value; + { + JSLock::DropAllLocks dropAllLocks(exec); + value = getProperty(toRef(exec), thisRef, propertyNameRef.get(), &exception); + } + if (exception) { + exec->vm().throwException(exec, toJS(exec, exception)); + return JSValue::encode(jsUndefined()); + } + if (value) + return JSValue::encode(toJS(exec, value)); + } + } + } + + return JSValue::encode(exec->vm().throwException(exec, createReferenceError(exec, ASCIILiteral("hasProperty callback returned true for a property that doesn't exist.")))); +} + +} // namespace JSC |