示例#1
0
文件: Lookup.cpp 项目: ptspzy/webkit
bool setUpStaticFunctionSlot(VM& vm, const HashTableValue* entry, JSObject* thisObject, PropertyName propertyName, PropertySlot& slot)
{
    ASSERT(thisObject->globalObject());
    ASSERT(entry->attributes() & BuiltinOrFunctionOrAccessorOrLazyProperty);
    unsigned attributes;
    bool isAccessor = entry->attributes() & Accessor;
    PropertyOffset offset = thisObject->getDirectOffset(vm, propertyName, attributes);

    if (!isValidOffset(offset)) {
        // If a property is ever deleted from an object with a static table, then we reify
        // all static functions at that time - after this we shouldn't be re-adding anything.
        if (thisObject->staticFunctionsReified())
            return false;

        if (entry->attributes() & Builtin)
            thisObject->putDirectBuiltinFunction(vm, thisObject->globalObject(), propertyName, entry->builtinGenerator()(vm), attributesForStructure(entry->attributes()));
        else if (entry->attributes() & Function) {
            thisObject->putDirectNativeFunction(
                vm, thisObject->globalObject(), propertyName, entry->functionLength(),
                entry->function(), entry->intrinsic(), attributesForStructure(entry->attributes()));
        } else if (isAccessor)
            reifyStaticAccessor(vm, *entry, *thisObject, propertyName);
        else if (entry->attributes() & CellProperty) {
            LazyCellProperty* property = bitwise_cast<LazyCellProperty*>(
                bitwise_cast<char*>(thisObject) + entry->lazyCellPropertyOffset());
            JSCell* result = property->get(thisObject);
            thisObject->putDirect(vm, propertyName, result, attributesForStructure(entry->attributes()));
        } else if (entry->attributes() & ClassStructure) {
            LazyClassStructure* structure = bitwise_cast<LazyClassStructure*>(
                bitwise_cast<char*>(thisObject) + entry->lazyClassStructureOffset());
            structure->get(jsCast<JSGlobalObject*>(thisObject));
        } else if (entry->attributes() & PropertyCallback) {
            JSValue result = entry->lazyPropertyCallback()(vm, thisObject);
            thisObject->putDirect(vm, propertyName, result, attributesForStructure(entry->attributes()));
        } else {
            dataLog("Static hashtable entry for ", propertyName, " has weird attributes: ", entry->attributes(), "\n");
            RELEASE_ASSERT_NOT_REACHED();
        }

        offset = thisObject->getDirectOffset(vm, propertyName, attributes);
        if (!isValidOffset(offset)) {
            dataLog("Static hashtable initialiation for ", propertyName, " did not produce a property.\n");
            RELEASE_ASSERT_NOT_REACHED();
        }
    }

    if (isAccessor)
        slot.setCacheableGetterSlot(thisObject, attributes, jsCast<GetterSetter*>(thisObject->getDirect(offset)), offset);
    else
        slot.setValue(thisObject, attributes, thisObject->getDirect(offset), offset);
    return true;
}
示例#2
0
void reifyStaticAccessor(VM& vm, const HashTableValue& value, JSObject& thisObject, PropertyName propertyName)
{
    JSGlobalObject* globalObject = thisObject.globalObject();
    GetterSetter* accessor = GetterSetter::create(vm, globalObject);
    if (value.accessorGetter()) {
        String getterName = tryMakeString(ASCIILiteral("get "), String(*propertyName.publicName()));
        if (!getterName)
            return;
        accessor->setGetter(vm, globalObject, value.attributes() & Builtin
            ? JSFunction::createBuiltinFunction(vm, value.builtinAccessorGetterGenerator()(vm), globalObject, getterName)
            : JSFunction::create(vm, globalObject, 0, getterName, value.accessorGetter()));
    }
    thisObject.putDirectNonIndexAccessor(vm, propertyName, accessor, attributesForStructure(value.attributes()));
}
void JSTestEnabledBySetting::finishCreation(VM& vm)
{
    Base::finishCreation(vm);
    ASSERT(inherits(vm, info()));

    if (downcast<Document>(jsCast<JSDOMGlobalObject*>(globalObject())->scriptExecutionContext())->settings().testSettingEnabled())
        putDirectCustomAccessor(vm, static_cast<JSVMClientData*>(vm.clientData)->builtinNames().TestSubObjEnabledBySettingPublicName(), CustomGetterSetter::create(vm, jsTestEnabledBySettingTestSubObjEnabledBySettingConstructor, setJSTestEnabledBySettingTestSubObjEnabledBySettingConstructor), attributesForStructure(static_cast<unsigned>(JSC::PropertyAttribute::DontEnum)));
}