Nullable types prohibited in supertypes

2011-09-13 19:43:41 +04:00
parent f8cb012097
commit 78a51bd9c4
2 changed files with 6 additions and 1 deletions
@@ -107,6 +107,11 @@ public class ClassDescriptorResolver {
            if (typeReference != null) {
                result.add(resolver.resolveType(extensibleScope, typeReference));
                JetTypeElement typeElement = typeReference.getTypeElement();
+                while (typeElement instanceof JetNullableType) {
+                    JetNullableType nullableType = (JetNullableType) typeElement;
+                    trace.getErrorHandler().genericError(nullableType.getQuestionMarkNode(), "A supertype cannot be nullable");
+                    typeElement = nullableType.getInnerType();
+                }
                if (typeElement instanceof JetUserType) {
                    JetUserType userType = (JetUserType) typeElement;
                    List<JetTypeProjection> typeArguments = userType.getTypeArguments();