@Nullable
public static ReceiverParameterDescriptor getDispatchReceiverParameterIfNeeded(
@NotNull DeclarationDescriptor containingDeclaration) {
if (containingDeclaration instanceof ClassDescriptor) {
ClassDescriptor classDescriptor = (ClassDescriptor) containingDeclaration;
return classDescriptor.getThisAsReceiverParameter();
}
return null;
}
public static boolean isDirectSubclass(
@NotNull ClassDescriptor subClass, @NotNull ClassDescriptor superClass) {
for (KotlinType superType : subClass.getTypeConstructor().getSupertypes()) {
if (isSameClass(superType, superClass.getOriginal())) {
return true;
}
}
return false;
}
@Nullable
public static ClassDescriptor getSuperClassDescriptor(@NotNull ClassDescriptor classDescriptor) {
Collection<KotlinType> superclassTypes = classDescriptor.getTypeConstructor().getSupertypes();
for (KotlinType type : superclassTypes) {
ClassDescriptor superClassDescriptor = getClassDescriptorForType(type);
if (superClassDescriptor.getKind() != ClassKind.INTERFACE) {
return superClassDescriptor;
}
}
return null;
}
@NotNull
public static KotlinType getSuperClassType(@NotNull ClassDescriptor classDescriptor) {
Collection<KotlinType> superclassTypes = classDescriptor.getTypeConstructor().getSupertypes();
for (KotlinType type : superclassTypes) {
ClassDescriptor superClassDescriptor = getClassDescriptorForType(type);
if (superClassDescriptor.getKind() != ClassKind.INTERFACE) {
return type;
}
}
return getBuiltIns(classDescriptor).getAnyType();
}
@NotNull
public static List<ClassDescriptor> getSuperclassDescriptors(
@NotNull ClassDescriptor classDescriptor) {
Collection<KotlinType> superclassTypes = classDescriptor.getTypeConstructor().getSupertypes();
List<ClassDescriptor> superClassDescriptors = new ArrayList<ClassDescriptor>();
for (KotlinType type : superclassTypes) {
ClassDescriptor result = getClassDescriptorForType(type);
if (!isAny(result)) {
superClassDescriptors.add(result);
}
}
return superClassDescriptors;
}
@NotNull
public static Visibility getDefaultConstructorVisibility(
@NotNull ClassDescriptor classDescriptor) {
ClassKind classKind = classDescriptor.getKind();
if (classKind == ClassKind.ENUM_CLASS
|| classKind.isSingleton()
|| isSealedClass(classDescriptor)) {
return Visibilities.PRIVATE;
}
if (isAnonymousObject(classDescriptor)) {
return Visibilities.DEFAULT_VISIBILITY;
}
assert classKind == ClassKind.CLASS
|| classKind == ClassKind.INTERFACE
|| classKind == ClassKind.ANNOTATION_CLASS;
return Visibilities.PUBLIC;
}
// TODO: should be internal
@Nullable
public static ClassDescriptor getInnerClassByName(
@NotNull ClassDescriptor classDescriptor,
@NotNull String innerClassName,
@NotNull LookupLocation location) {
ClassifierDescriptor classifier =
classDescriptor
.getDefaultType()
.getMemberScope()
.getContributedClassifier(Name.identifier(innerClassName), location);
assert classifier instanceof ClassDescriptor
: "Inner class "
+ innerClassName
+ " in "
+ classDescriptor
+ " should be instance of ClassDescriptor, but was: "
+ (classifier == null ? "null" : classifier.getClass());
return (ClassDescriptor) classifier;
}
public static boolean isSingletonOrAnonymousObject(@NotNull ClassDescriptor classDescriptor) {
return classDescriptor.getKind().isSingleton() || isAnonymousObject(classDescriptor);
}
public static boolean classCanHaveOpenMembers(@NotNull ClassDescriptor classDescriptor) {
return classDescriptor.getModality() != Modality.FINAL
|| classDescriptor.getKind() == ClassKind.ENUM_CLASS;
}
public static boolean classCanHaveAbstractMembers(@NotNull ClassDescriptor classDescriptor) {
return classDescriptor.getModality() == Modality.ABSTRACT
|| isSealedClass(classDescriptor)
|| classDescriptor.getKind() == ClassKind.ENUM_CLASS;
}
/** @return true iff {@code descriptor}'s first non-class container is a package */
public static boolean isTopLevelOrInnerClass(@NotNull ClassDescriptor descriptor) {
DeclarationDescriptor containing = descriptor.getContainingDeclaration();
return isTopLevelDeclaration(descriptor)
|| containing instanceof ClassDescriptor
&& isTopLevelOrInnerClass((ClassDescriptor) containing);
}
public static boolean isSubclass(
@NotNull ClassDescriptor subClass, @NotNull ClassDescriptor superClass) {
return isSubtypeOfClass(subClass.getDefaultType(), superClass.getOriginal());
}