Lines Matching refs:IsNull
100 if (IsUndefined() || IsNull()) return Heap::false_value();
989 else if (IsNull())
1702 if (proto->IsNull()) return result->NotFound();
1838 if (proto->IsNull()) return value;
1925 if (proto->IsNull()) return value;
2368 if (proto->IsNull()) return Heap::false_value();
2431 if (proto->IsNull()) return Heap::false_value();
2639 if (proto->IsNull()) return result->NotFound();
2835 if (proto->IsNull()) return this;
2983 if (key->IsNull()) {
3031 if (key->IsNull()) continue;
4600 source_prototype->IsNull());
4602 target_prototype->IsNull());
4765 ASSERT(prototype->IsNull());
5325 if (!value->IsJSObject() && !value->IsNull()) return value;
5668 if (proto->IsNull()) return value;
6867 if (!element->IsNull() && Shape::IsMatch(key, element)) return entry;
6926 if (element->IsUndefined() || element->IsNull()) break;
