private void reportCyclicInheritanceHierarchyError(
@NotNull BindingTrace trace,
@NotNull ClassDescriptor classDescriptor,
@NotNull ClassDescriptor superclass) {
PsiElement psiElement = DescriptorToSourceUtils.getSourceFromDescriptor(classDescriptor);
PsiElement elementToMark = null;
if (psiElement instanceof KtClassOrObject) {
KtClassOrObject classOrObject = (KtClassOrObject) psiElement;
for (KtSuperTypeListEntry delegationSpecifier : classOrObject.getSuperTypeListEntries()) {
KtTypeReference typeReference = delegationSpecifier.getTypeReference();
if (typeReference == null) continue;
KotlinType 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 Pair<FunctionDescriptor, PsiElement> getContainingFunctionSkipFunctionLiterals(
@Nullable DeclarationDescriptor startDescriptor, boolean strict) {
FunctionDescriptor containingFunctionDescriptor =
DescriptorUtils.getParentOfType(startDescriptor, FunctionDescriptor.class, strict);
PsiElement containingFunction =
containingFunctionDescriptor != null
? DescriptorToSourceUtils.getSourceFromDescriptor(containingFunctionDescriptor)
: null;
while (containingFunction instanceof JetFunctionLiteral) {
containingFunctionDescriptor =
DescriptorUtils.getParentOfType(containingFunctionDescriptor, FunctionDescriptor.class);
containingFunction =
containingFunctionDescriptor != null
? DescriptorToSourceUtils.getSourceFromDescriptor(containingFunctionDescriptor)
: null;
}
return new Pair<FunctionDescriptor, PsiElement>(
containingFunctionDescriptor, containingFunction);
}
private void checkSupertypesForConsistency(@NotNull ClassDescriptor classDescriptor) {
Multimap<TypeConstructor, TypeProjection> multimap =
SubstitutionUtils.buildDeepSubstitutionMultimap(classDescriptor.getDefaultType());
for (Map.Entry<TypeConstructor, Collection<TypeProjection>> entry :
multimap.asMap().entrySet()) {
Collection<TypeProjection> projections = entry.getValue();
if (projections.size() > 1) {
TypeConstructor typeConstructor = entry.getKey();
DeclarationDescriptor declarationDescriptor = typeConstructor.getDeclarationDescriptor();
assert declarationDescriptor instanceof TypeParameterDescriptor : declarationDescriptor;
TypeParameterDescriptor typeParameterDescriptor =
(TypeParameterDescriptor) declarationDescriptor;
// Immediate arguments of supertypes cannot be projected
Set<JetType> conflictingTypes = Sets.newLinkedHashSet();
for (TypeProjection projection : projections) {
conflictingTypes.add(projection.getType());
}
removeDuplicateTypes(conflictingTypes);
if (conflictingTypes.size() > 1) {
DeclarationDescriptor containingDeclaration =
typeParameterDescriptor.getContainingDeclaration();
assert containingDeclaration instanceof ClassDescriptor : containingDeclaration;
JetClassOrObject psiElement =
(JetClassOrObject) DescriptorToSourceUtils.getSourceFromDescriptor(classDescriptor);
assert psiElement != null;
JetDelegationSpecifierList delegationSpecifierList =
psiElement.getDelegationSpecifierList();
assert delegationSpecifierList != null;
//
// trace.getErrorHandler().genericError(delegationSpecifierList.getNode(), "Type parameter
// " + typeParameterDescriptor.getName() + " of " + containingDeclaration.getName() + "
// has inconsistent values: " + conflictingTypes);
trace.report(
INCONSISTENT_TYPE_PARAMETER_VALUES.on(
delegationSpecifierList,
typeParameterDescriptor,
(ClassDescriptor) containingDeclaration,
conflictingTypes));
}
}
}
}