public static void reportCyclicInheritanceHierarchyError(
@NotNull BindingTrace trace,
@NotNull ClassDescriptor classDescriptor,
@NotNull ClassDescriptor superclass) {
PsiElement psiElement =
BindingContextUtils.classDescriptorToDeclaration(
trace.getBindingContext(), classDescriptor);
PsiElement elementToMark = null;
if (psiElement instanceof JetClassOrObject) {
JetClassOrObject classOrObject = (JetClassOrObject) psiElement;
for (JetDelegationSpecifier delegationSpecifier : classOrObject.getDelegationSpecifiers()) {
JetTypeReference typeReference = delegationSpecifier.getTypeReference();
if (typeReference == null) continue;
JetType supertype = trace.get(TYPE, typeReference);
if (supertype != null && supertype.getConstructor() == superclass.getTypeConstructor()) {
elementToMark = typeReference;
}
}
}
if (elementToMark == null && psiElement instanceof PsiNameIdentifierOwner) {
PsiNameIdentifierOwner namedElement = (PsiNameIdentifierOwner) psiElement;
PsiElement nameIdentifier = namedElement.getNameIdentifier();
if (nameIdentifier != null) {
elementToMark = nameIdentifier;
}
}
if (elementToMark != null) {
trace.report(CYCLIC_INHERITANCE_HIERARCHY.on(elementToMark));
}
}
@NotNull
public static JetExpression createStubExpressionOfNecessaryType(
@NotNull Project project, @NotNull JetType type, @NotNull BindingTrace trace) {
JetExpression expression = JetPsiFactory.createExpression(project, "$e");
trace.record(PROCESSED, expression);
trace.record(EXPRESSION_TYPE, expression, type);
return expression;
}