56     if (handler->IsNull()) {  in GetPrototype()
83     if (!handlerProto.IsECMAObject() && !handlerProto.IsNull()) {  in GetPrototype()
113     ASSERT(proto->IsECMAObject() || proto->IsNull());  in SetPrototype()
117     if (handler.IsNull()) {  in SetPrototype()
177     if (handler.IsNull()) {  in IsExtensible()
233     if (handler.IsNull()) {  in PreventExtensions()
286     if (handler.IsNull()) {  in GetOwnProperty()
383     if (handler.IsNull()) {  in DefineOwnProperty()
471     if (handler.IsNull()) {  in HasProperty()
543     if (handler.IsNull()) {  in GetProperty()
627     if (handler.IsNull()) {  in SetProperty()
686     if (handler.IsNull()) {  in DeleteProperty()
742     if (handler.IsNull()) {  in OwnPropertyKeys()
895     if (handler->IsNull()) {  in CallInternal()
948     if (handler->IsNull()) {  in ConstructInternal()
1000     if (GetHandler().IsNull()) {  in IsArray()