private void checkCyclicConstructorDelegationCall(
@NotNull ConstructorDescriptor constructorDescriptor,
@NotNull Set<ConstructorDescriptor> visitedConstructors) {
if (visitedConstructors.contains(constructorDescriptor)) return;
// if visit constructor that is already in current chain
// such constructor is on cycle
Set<ConstructorDescriptor> visitedInCurrentChain = Sets.newHashSet();
ConstructorDescriptor currentConstructorDescriptor = constructorDescriptor;
while (true) {
visitedInCurrentChain.add(currentConstructorDescriptor);
ConstructorDescriptor delegatedConstructorDescriptor =
getDelegatedConstructor(currentConstructorDescriptor);
if (delegatedConstructorDescriptor == null) break;
// if next delegation call is super or primary constructor or already visited
if (!constructorDescriptor
.getContainingDeclaration()
.equals(delegatedConstructorDescriptor.getContainingDeclaration())
|| delegatedConstructorDescriptor.isPrimary()
|| visitedConstructors.contains(delegatedConstructorDescriptor)) {
break;
}
if (visitedInCurrentChain.contains(delegatedConstructorDescriptor)) {
reportEachConstructorOnCycle(delegatedConstructorDescriptor);
break;
}
currentConstructorDescriptor = delegatedConstructorDescriptor;
}
visitedConstructors.addAll(visitedInCurrentChain);
}
@Override
public Void visitConstructorDescriptor(
ConstructorDescriptor constructorDescriptor, StringBuilder builder) {
renderVisibility(constructorDescriptor.getVisibility(), builder);
builder.append(renderKeyword("ctor")).append(" ");
ClassDescriptor classDescriptor = constructorDescriptor.getContainingDeclaration();
builder.append(classDescriptor.getName());
renderTypeParameters(classDescriptor.getTypeConstructor().getParameters(), builder);
renderValueParameters(constructorDescriptor, builder);
return null;
}
private void renderConstructor(
@NotNull ConstructorDescriptor constructor, @NotNull StringBuilder builder) {
renderAnnotations(constructor, builder);
renderVisibility(constructor.getVisibility(), builder);
renderMemberKind(constructor, builder);
builder.append(renderKeyword("constructor")).append(" ");
ClassDescriptor classDescriptor = constructor.getContainingDeclaration();
renderName(classDescriptor, builder);
renderTypeParameters(classDescriptor.getTypeConstructor().getParameters(), builder, false);
renderValueParameters(constructor, builder);
renderWhereSuffix(constructor.getTypeParameters(), builder);
}
private void resolveSecondaryConstructorBody(
JetSecondaryConstructor declaration, final ConstructorDescriptor descriptor) {
if (!context.completeAnalysisNeeded(declaration)) return;
MutableClassDescriptor classDescriptor =
(MutableClassDescriptor) descriptor.getContainingDeclaration();
final JetScope scopeForSupertypeInitializers =
FunctionDescriptorUtil.getFunctionInnerScope(
classDescriptor.getScopeForSupertypeResolution(), descriptor, trace);
// contains only constructor parameters
final JetScope scopeForConstructorBody =
FunctionDescriptorUtil.getFunctionInnerScope(
classDescriptor.getScopeForInitializers(), descriptor, trace);
// contains members & backing fields
final DataFlowInfo dataFlowInfo = DataFlowInfo.EMPTY; // TODO: dataFlowInfo
PsiElement nameElement = declaration.getNameNode().getPsi();
if (classDescriptor.getUnsubstitutedPrimaryConstructor() == null) {
trace.report(SECONDARY_CONSTRUCTOR_BUT_NO_PRIMARY.on(nameElement));
} else {
List<JetDelegationSpecifier> initializers = declaration.getInitializers();
if (initializers.isEmpty()) {
trace.report(SECONDARY_CONSTRUCTOR_NO_INITIALIZER_LIST.on(nameElement));
} else {
initializers
.get(0)
.accept(
new JetVisitorVoid() {
@Override
public void visitDelegationToSuperCallSpecifier(JetDelegatorToSuperCall call) {
JetTypeReference typeReference = call.getTypeReference();
if (typeReference != null) {
callResolver.resolveFunctionCall(
trace,
scopeForSupertypeInitializers,
CallMaker.makeCall(ReceiverDescriptor.NO_RECEIVER, null, call),
NO_EXPECTED_TYPE,
dataFlowInfo);
}
}
@Override
public void visitDelegationToThisCall(JetDelegatorToThisCall call) {
// TODO : check that there's no recursion in this() calls
// TODO : check: if a this() call is present, no other initializers are allowed
ClassDescriptor classDescriptor = descriptor.getContainingDeclaration();
callResolver.resolveFunctionCall(
trace,
scopeForSupertypeInitializers,
CallMaker.makeCall(ReceiverDescriptor.NO_RECEIVER, null, call),
NO_EXPECTED_TYPE,
dataFlowInfo);
// call.getThisReference(),
// classDescriptor,
// classDescriptor.getDefaultType(),
// call);
// trace.getErrorHandler().genericError(call.getNode(),
// "this-calls are not supported");
}
@Override
public void visitDelegationByExpressionSpecifier(
JetDelegatorByExpressionSpecifier specifier) {
trace.report(BY_IN_SECONDARY_CONSTRUCTOR.on(specifier));
}
@Override
public void visitDelegationToSuperClassSpecifier(
JetDelegatorToSuperClass specifier) {
trace.report(INITIALIZER_WITH_NO_ARGUMENTS.on(specifier));
}
@Override
public void visitDelegationSpecifier(JetDelegationSpecifier specifier) {
throw new IllegalStateException();
}
});
for (int i = 1, initializersSize = initializers.size(); i < initializersSize; i++) {
JetDelegationSpecifier initializer = initializers.get(i);
trace.report(MANY_CALLS_TO_THIS.on(initializer));
}
}
}
JetExpression bodyExpression = declaration.getBodyExpression();
if (bodyExpression != null) {
expressionTypingServices.checkFunctionReturnType(
scopeForConstructorBody,
declaration,
descriptor,
JetStandardClasses.getUnitType(),
trace);
}
checkDefaultParameterValues(
declaration.getValueParameters(), descriptor.getValueParameters(), scopeForConstructorBody);
}