private void createTypeConstructors(@NotNull TopDownAnalysisContext c) {
for (Map.Entry<JetClassOrObject, ClassDescriptorWithResolutionScopes> entry :
c.getClasses().entrySet()) {
JetClassOrObject classOrObject = entry.getKey();
MutableClassDescriptor descriptor = (MutableClassDescriptor) entry.getValue();
if (classOrObject instanceof JetClass) {
descriptorResolver.resolveMutableClassDescriptor(
(JetClass) classOrObject, descriptor, trace);
} else if (classOrObject instanceof JetObjectDeclaration) {
descriptor.setModality(Modality.FINAL);
descriptor.setVisibility(
resolveVisibilityFromModifiers(classOrObject, getDefaultClassVisibility(descriptor)));
descriptor.setTypeParameterDescriptors(Collections.<TypeParameterDescriptor>emptyList());
}
descriptor.createTypeConstructor();
ClassKind kind = descriptor.getKind();
if (kind == ClassKind.ENUM_ENTRY
|| kind == ClassKind.OBJECT
|| kind == ClassKind.ENUM_CLASS) {
MutableClassDescriptorLite classObject = descriptor.getClassObjectDescriptor();
assert classObject != null
: "Enum entries and named objects should have class objects: "
+ classOrObject.getText();
JetType supertype;
if (kind == ClassKind.ENUM_CLASS) {
supertype = KotlinBuiltIns.getInstance().getAnyType();
} else {
// This is a clever hack: each enum entry and object declaration (i.e. singleton) has a
// synthetic class object.
// We make this class object inherit from the singleton here, thus allowing to use the
// singleton's class object where
// the instance of the singleton is applicable. Effectively all members of the singleton
// would be present in its class
// object as fake overrides, so you can access them via standard class object notation:
// ObjectName.memberName()
supertype = descriptor.getDefaultType();
}
classObject.setSupertypes(Collections.singleton(supertype));
classObject.createTypeConstructor();
}
}
}
@NotNull
private MutableClassDescriptor createSyntheticClassObject(
@NotNull ClassDescriptor classDescriptor) {
MutableClassDescriptor classObject =
new MutableClassDescriptor(
classDescriptor,
outerScope,
ClassKind.CLASS_OBJECT,
false,
getClassObjectName(classDescriptor.getName()));
classObject.setModality(Modality.FINAL);
classObject.setVisibility(DescriptorUtils.getSyntheticClassObjectVisibility());
classObject.setTypeParameterDescriptors(Collections.<TypeParameterDescriptor>emptyList());
createPrimaryConstructorForObject(null, classObject);
return classObject;
}
private void resolveDelegationSpecifierList(
final JetClassOrObject jetClass, final MutableClassDescriptor descriptor) {
if (!context.completeAnalysisNeeded(jetClass)) return;
final ConstructorDescriptor primaryConstructor =
descriptor.getUnsubstitutedPrimaryConstructor();
final JetScope scopeForConstructor =
primaryConstructor == null
? null
: FunctionDescriptorUtil.getFunctionInnerScope(
descriptor.getScopeForSupertypeResolution(), primaryConstructor, trace);
final ExpressionTypingServices typeInferrer = expressionTypingServices; // TODO : flow
final Map<JetTypeReference, JetType> supertypes = Maps.newLinkedHashMap();
JetVisitorVoid visitor =
new JetVisitorVoid() {
private void recordSupertype(JetTypeReference typeReference, JetType supertype) {
if (supertype == null) return;
supertypes.put(typeReference, supertype);
}
@Override
public void visitDelegationByExpressionSpecifier(
JetDelegatorByExpressionSpecifier specifier) {
if (descriptor.getKind() == ClassKind.TRAIT) {
trace.report(DELEGATION_IN_TRAIT.on(specifier));
}
JetType supertype =
trace.getBindingContext().get(BindingContext.TYPE, specifier.getTypeReference());
recordSupertype(specifier.getTypeReference(), supertype);
if (supertype != null) {
DeclarationDescriptor declarationDescriptor =
supertype.getConstructor().getDeclarationDescriptor();
if (declarationDescriptor instanceof ClassDescriptor) {
ClassDescriptor classDescriptor = (ClassDescriptor) declarationDescriptor;
if (classDescriptor.getKind() != ClassKind.TRAIT) {
trace.report(DELEGATION_NOT_TO_TRAIT.on(specifier.getTypeReference()));
}
}
}
JetExpression delegateExpression = specifier.getDelegateExpression();
if (delegateExpression != null) {
JetScope scope =
scopeForConstructor == null
? descriptor.getScopeForMemberResolution()
: scopeForConstructor;
JetType type =
typeInferrer.getType(scope, delegateExpression, NO_EXPECTED_TYPE, trace);
if (type != null
&& supertype != null
&& !JetTypeChecker.INSTANCE.isSubtypeOf(type, supertype)) {
trace.report(TYPE_MISMATCH.on(delegateExpression, supertype, type));
}
}
}
@Override
public void visitDelegationToSuperCallSpecifier(JetDelegatorToSuperCall call) {
JetValueArgumentList valueArgumentList = call.getValueArgumentList();
PsiElement elementToMark = valueArgumentList == null ? call : valueArgumentList;
if (descriptor.getKind() == ClassKind.TRAIT) {
trace.report(SUPERTYPE_INITIALIZED_IN_TRAIT.on(elementToMark));
}
JetTypeReference typeReference = call.getTypeReference();
if (typeReference == null) return;
if (descriptor.getUnsubstitutedPrimaryConstructor() == null) {
assert descriptor.getKind() == ClassKind.TRAIT;
return;
}
OverloadResolutionResults<FunctionDescriptor> results =
callResolver.resolveFunctionCall(
trace,
scopeForConstructor,
CallMaker.makeCall(ReceiverDescriptor.NO_RECEIVER, null, call),
NO_EXPECTED_TYPE,
DataFlowInfo.EMPTY);
if (results.isSuccess()) {
JetType supertype = results.getResultingDescriptor().getReturnType();
recordSupertype(typeReference, supertype);
ClassDescriptor classDescriptor = TypeUtils.getClassDescriptor(supertype);
if (classDescriptor != null) {
if (classDescriptor.getKind() == ClassKind.TRAIT) {
trace.report(CONSTRUCTOR_IN_TRAIT.on(elementToMark));
}
}
} else {
recordSupertype(
typeReference, trace.getBindingContext().get(BindingContext.TYPE, typeReference));
}
}
@Override
public void visitDelegationToSuperClassSpecifier(JetDelegatorToSuperClass specifier) {
JetTypeReference typeReference = specifier.getTypeReference();
JetType supertype = trace.getBindingContext().get(BindingContext.TYPE, typeReference);
recordSupertype(typeReference, supertype);
if (supertype == null) return;
ClassDescriptor classDescriptor = TypeUtils.getClassDescriptor(supertype);
if (classDescriptor == null) return;
if (descriptor.getKind() != ClassKind.TRAIT
&& classDescriptor.hasConstructors()
&& !ErrorUtils.isError(classDescriptor.getTypeConstructor())
&& classDescriptor.getKind() != ClassKind.TRAIT) {
boolean hasConstructorWithoutParams = false;
for (ConstructorDescriptor constructor : classDescriptor.getConstructors()) {
if (constructor.getValueParameters().isEmpty()) {
hasConstructorWithoutParams = true;
}
}
if (!hasConstructorWithoutParams) {
trace.report(SUPERTYPE_NOT_INITIALIZED.on(specifier));
} else {
trace.report(SUPERTYPE_NOT_INITIALIZED_DEFAULT.on(specifier));
}
}
}
@Override
public void visitDelegationToThisCall(JetDelegatorToThisCall thisCall) {
throw new IllegalStateException("This-calls should be prohibited by the parser");
}
@Override
public void visitJetElement(JetElement element) {
throw new UnsupportedOperationException(element.getText() + " : " + element);
}
};
for (JetDelegationSpecifier delegationSpecifier : jetClass.getDelegationSpecifiers()) {
delegationSpecifier.accept(visitor);
}
Set<TypeConstructor> parentEnum = Collections.emptySet();
if (jetClass instanceof JetEnumEntry) {
parentEnum =
Collections.singleton(
((ClassDescriptor) descriptor.getContainingDeclaration().getContainingDeclaration())
.getTypeConstructor());
}
checkSupertypeList(descriptor, supertypes, parentEnum);
}