@NotNull
private MutableClassDescriptor createClassDescriptorForClass(
@NotNull JetClass klass, @NotNull DeclarationDescriptor containingDeclaration) {
ClassKind kind = getClassKind(klass);
// Kind check is needed in order to not consider enums as inner in any case
// (otherwise it would be impossible to create a class object in the enum)
boolean isInner = kind == ClassKind.CLASS && klass.isInner();
MutableClassDescriptor mutableClassDescriptor =
new MutableClassDescriptor(
containingDeclaration,
outerScope,
kind,
isInner,
JetPsiUtil.safeName(klass.getName()));
c.getClasses().put(klass, mutableClassDescriptor);
trace.record(
FQNAME_TO_CLASS_DESCRIPTOR, JetPsiUtil.getUnsafeFQName(klass), mutableClassDescriptor);
createClassObjectForEnumClass(mutableClassDescriptor);
JetScope classScope = mutableClassDescriptor.getScopeForMemberDeclarationResolution();
prepareForDeferredCall(classScope, mutableClassDescriptor, klass);
return mutableClassDescriptor;
}
@Override
public void visitObjectDeclaration(@NotNull JetObjectDeclaration declaration) {
if (declaration.isObjectLiteral()) {
createClassDescriptorForSingleton(
declaration, SpecialNames.NO_NAME_PROVIDED, ClassKind.CLASS);
return;
}
MutableClassDescriptor descriptor =
createClassDescriptorForSingleton(
declaration, JetPsiUtil.safeName(declaration.getName()), ClassKind.OBJECT);
owner.addClassifierDescriptor(descriptor);
trace.record(FQNAME_TO_CLASS_DESCRIPTOR, JetPsiUtil.getUnsafeFQName(declaration), descriptor);
descriptor.getBuilder().setClassObjectDescriptor(createSyntheticClassObject(descriptor));
}
@Override
public void visitEnumEntry(@NotNull JetEnumEntry declaration) {
MutableClassDescriptor descriptor =
createClassDescriptorForSingleton(
declaration, JetPsiUtil.safeName(declaration.getName()), ClassKind.ENUM_ENTRY);
owner.addClassifierDescriptor(descriptor);
descriptor.getBuilder().setClassObjectDescriptor(createSyntheticClassObject(descriptor));
}
@NotNull
public Collection<? extends DeclarationDescriptor> lookupDescriptorsForQualifiedExpression(
@NotNull JetQualifiedExpression importedReference,
@NotNull JetScope outerScope,
@NotNull JetScope scopeToCheckVisibility,
@NotNull BindingTrace trace,
@NotNull LookupMode lookupMode,
boolean storeResult) {
JetExpression receiverExpression = importedReference.getReceiverExpression();
Collection<? extends DeclarationDescriptor> declarationDescriptors;
if (receiverExpression instanceof JetQualifiedExpression) {
declarationDescriptors =
lookupDescriptorsForQualifiedExpression(
(JetQualifiedExpression) receiverExpression,
outerScope,
scopeToCheckVisibility,
trace,
lookupMode,
storeResult);
} else {
assert receiverExpression instanceof JetSimpleNameExpression;
declarationDescriptors =
lookupDescriptorsForSimpleNameReference(
(JetSimpleNameExpression) receiverExpression,
outerScope,
scopeToCheckVisibility,
trace,
lookupMode,
true,
storeResult);
}
JetExpression selectorExpression = importedReference.getSelectorExpression();
if (!(selectorExpression instanceof JetSimpleNameExpression)) {
return Collections.emptyList();
}
JetSimpleNameExpression selector = (JetSimpleNameExpression) selectorExpression;
JetSimpleNameExpression lastReference = JetPsiUtil.getLastReference(receiverExpression);
if (lastReference == null
|| !canImportMembersFrom(declarationDescriptors, lastReference, trace, lookupMode)) {
return Collections.emptyList();
}
return lookupSelectorDescriptors(
selector, declarationDescriptors, trace, scopeToCheckVisibility, lookupMode, storeResult);
}
@NotNull
public Collection<? extends DeclarationDescriptor> processImportReference(
@NotNull JetImportDirective importDirective,
@NotNull JetScope scope,
@NotNull JetScope scopeToCheckVisibility,
@NotNull Importer importer,
@NotNull BindingTrace trace,
@NotNull ModuleConfiguration moduleConfiguration,
@NotNull LookupMode lookupMode) {
if (importDirective.isAbsoluteInRootNamespace()) {
trace.report(UNSUPPORTED.on(importDirective, "TypeHierarchyResolver")); // TODO
return Collections.emptyList();
}
JetExpression importedReference = importDirective.getImportedReference();
if (importedReference == null) {
return Collections.emptyList();
}
Collection<? extends DeclarationDescriptor> descriptors;
if (importedReference instanceof JetQualifiedExpression) {
// store result only when we find all descriptors, not only classes on the second phase
descriptors =
lookupDescriptorsForQualifiedExpression(
(JetQualifiedExpression) importedReference,
scope,
scopeToCheckVisibility,
trace,
lookupMode,
lookupMode == LookupMode.EVERYTHING);
} else {
assert importedReference instanceof JetSimpleNameExpression;
descriptors =
lookupDescriptorsForSimpleNameReference(
(JetSimpleNameExpression) importedReference,
scope,
scopeToCheckVisibility,
trace,
lookupMode,
true,
lookupMode == LookupMode.EVERYTHING);
}
JetSimpleNameExpression referenceExpression = JetPsiUtil.getLastReference(importedReference);
if (importDirective.isAllUnder()) {
if (referenceExpression == null
|| !canImportMembersFrom(descriptors, referenceExpression, trace, lookupMode)) {
return Collections.emptyList();
}
for (DeclarationDescriptor descriptor : descriptors) {
importer.addAllUnderImport(descriptor, moduleConfiguration.getPlatformToKotlinClassMap());
}
return Collections.emptyList();
}
Name aliasName = JetPsiUtil.getAliasName(importDirective);
if (aliasName == null) {
return Collections.emptyList();
}
for (DeclarationDescriptor descriptor : descriptors) {
importer.addAliasImport(descriptor, aliasName);
}
return descriptors;
}
@NotNull
protected JetTypeInfo visitAssignmentOperation(
JetBinaryExpression expression, ExpressionTypingContext contextWithExpectedType) {
// There is a temporary binding trace for an opportunity to resolve set method for array if
// needed (the initial trace should be used there)
TemporaryBindingTrace temporaryBindingTrace =
TemporaryBindingTrace.create(
contextWithExpectedType.trace,
"trace to resolve array set method for binary expression",
expression);
ExpressionTypingContext context =
contextWithExpectedType
.replaceExpectedType(TypeUtils.NO_EXPECTED_TYPE)
.replaceBindingTrace(temporaryBindingTrace);
JetSimpleNameExpression operationSign = expression.getOperationReference();
IElementType operationType = operationSign.getReferencedNameElementType();
JetTypeInfo leftInfo = facade.getTypeInfo(expression.getLeft(), context);
JetType leftType = leftInfo.getType();
DataFlowInfo dataFlowInfo = leftInfo.getDataFlowInfo();
JetExpression right = expression.getRight();
JetExpression left = JetPsiUtil.deparenthesizeWithNoTypeResolution(expression.getLeft());
if (right == null || left == null) {
temporaryBindingTrace.commit();
return JetTypeInfo.create(null, dataFlowInfo);
}
if (leftType == null) {
dataFlowInfo =
facade.getTypeInfo(right, context.replaceDataFlowInfo(dataFlowInfo)).getDataFlowInfo();
context.trace.report(UNRESOLVED_REFERENCE.on(operationSign));
temporaryBindingTrace.commit();
return JetTypeInfo.create(null, dataFlowInfo);
}
ExpressionReceiver receiver = new ExpressionReceiver(left, leftType);
// We check that defined only one of '+=' and '+' operations, and call it (in the case '+' we
// then also assign)
// Check for '+='
Name name = OperatorConventions.ASSIGNMENT_OPERATIONS.get(operationType);
TemporaryBindingTrace assignmentOperationTrace =
TemporaryBindingTrace.create(
context.trace, "trace to check assignment operation like '+=' for", expression);
OverloadResolutionResults<FunctionDescriptor> assignmentOperationDescriptors =
basic.getResolutionResultsForBinaryCall(
scope,
name,
context.replaceBindingTrace(assignmentOperationTrace),
expression,
receiver);
JetType assignmentOperationType =
OverloadResolutionResultsUtil.getResultType(assignmentOperationDescriptors);
// Check for '+'
Name counterpartName =
OperatorConventions.BINARY_OPERATION_NAMES.get(
OperatorConventions.ASSIGNMENT_OPERATION_COUNTERPARTS.get(operationType));
TemporaryBindingTrace binaryOperationTrace =
TemporaryBindingTrace.create(
context.trace, "trace to check binary operation like '+' for", expression);
OverloadResolutionResults<FunctionDescriptor> binaryOperationDescriptors =
basic.getResolutionResultsForBinaryCall(
scope,
counterpartName,
context.replaceBindingTrace(binaryOperationTrace),
expression,
receiver);
JetType binaryOperationType =
OverloadResolutionResultsUtil.getResultType(binaryOperationDescriptors);
JetType type = assignmentOperationType != null ? assignmentOperationType : binaryOperationType;
if (assignmentOperationType != null && binaryOperationType != null) {
OverloadResolutionResults<FunctionDescriptor> ambiguityResolutionResults =
OverloadResolutionResultsUtil.ambiguity(
assignmentOperationDescriptors, binaryOperationDescriptors);
context.trace.report(
ASSIGN_OPERATOR_AMBIGUITY.on(
operationSign, ambiguityResolutionResults.getResultingCalls()));
Collection<DeclarationDescriptor> descriptors = Sets.newHashSet();
for (ResolvedCall<? extends FunctionDescriptor> call :
ambiguityResolutionResults.getResultingCalls()) {
descriptors.add(call.getResultingDescriptor());
}
dataFlowInfo =
facade.getTypeInfo(right, context.replaceDataFlowInfo(dataFlowInfo)).getDataFlowInfo();
context.trace.record(AMBIGUOUS_REFERENCE_TARGET, operationSign, descriptors);
} else if (assignmentOperationType != null) {
assignmentOperationTrace.commit();
if (!KotlinBuiltIns.getInstance().isUnit(assignmentOperationType)) {
context.trace.report(
ASSIGNMENT_OPERATOR_SHOULD_RETURN_UNIT.on(
operationSign,
assignmentOperationDescriptors.getResultingDescriptor(),
operationSign));
}
} else {
binaryOperationTrace.commit();
context.trace.record(VARIABLE_REASSIGNMENT, expression);
if (left instanceof JetArrayAccessExpression) {
ExpressionTypingContext contextForResolve =
context
.replaceScope(scope)
.replaceBindingTrace(
TemporaryBindingTrace.create(
contextWithExpectedType.trace,
"trace to resolve array set method for assignment",
expression));
basic.resolveArrayAccessSetMethod(
(JetArrayAccessExpression) left, right, contextForResolve, context.trace);
}
dataFlowInfo =
facade.getTypeInfo(right, context.replaceDataFlowInfo(dataFlowInfo)).getDataFlowInfo();
}
basic.checkLValue(context.trace, expression.getLeft());
temporaryBindingTrace.commit();
return JetTypeInfo.create(
checkAssignmentType(type, expression, contextWithExpectedType), dataFlowInfo);
}
@NotNull
/*package*/ OverloadResolutionResultsImpl<FunctionDescriptor> resolveFunctionCall(
@NotNull BasicCallResolutionContext context) {
ProgressIndicatorProvider.checkCanceled();
List<ResolutionTask<CallableDescriptor, FunctionDescriptor>> prioritizedTasks;
JetExpression calleeExpression = context.call.getCalleeExpression();
JetReferenceExpression functionReference;
if (calleeExpression instanceof JetSimpleNameExpression) {
JetSimpleNameExpression expression = (JetSimpleNameExpression) calleeExpression;
functionReference = expression;
ExpressionTypingUtils.checkCapturingInClosure(expression, context.trace, context.scope);
Name name = expression.getReferencedNameAsName();
prioritizedTasks =
TaskPrioritizer.<CallableDescriptor, FunctionDescriptor>computePrioritizedTasks(
context,
name,
functionReference,
CallableDescriptorCollectors.FUNCTIONS_AND_VARIABLES);
ResolutionTask.DescriptorCheckStrategy abstractConstructorCheck =
new ResolutionTask.DescriptorCheckStrategy() {
@Override
public <D extends CallableDescriptor> boolean performAdvancedChecks(
D descriptor, BindingTrace trace, TracingStrategy tracing) {
if (descriptor instanceof ConstructorDescriptor) {
Modality modality =
((ConstructorDescriptor) descriptor).getContainingDeclaration().getModality();
if (modality == Modality.ABSTRACT) {
tracing.instantiationOfAbstractClass(trace);
return false;
}
}
return true;
}
};
for (ResolutionTask task : prioritizedTasks) {
task.setCheckingStrategy(abstractConstructorCheck);
}
} else {
JetValueArgumentList valueArgumentList = context.call.getValueArgumentList();
PsiElement reportAbsenceOn =
valueArgumentList == null ? context.call.getCallElement() : valueArgumentList;
if (calleeExpression instanceof JetConstructorCalleeExpression) {
assert !context.call.getExplicitReceiver().exists();
JetConstructorCalleeExpression expression =
(JetConstructorCalleeExpression) calleeExpression;
functionReference = expression.getConstructorReferenceExpression();
if (functionReference == null) {
return checkArgumentTypesAndFail(context); // No type there
}
JetTypeReference typeReference = expression.getTypeReference();
assert typeReference != null;
JetType constructedType =
typeResolver.resolveType(context.scope, typeReference, context.trace, true);
if (constructedType.isError()) {
return checkArgumentTypesAndFail(context);
}
DeclarationDescriptor declarationDescriptor =
constructedType.getConstructor().getDeclarationDescriptor();
if (declarationDescriptor instanceof ClassDescriptor) {
ClassDescriptor classDescriptor = (ClassDescriptor) declarationDescriptor;
Collection<ConstructorDescriptor> constructors = classDescriptor.getConstructors();
if (constructors.isEmpty()) {
context.trace.report(NO_CONSTRUCTOR.on(reportAbsenceOn));
return checkArgumentTypesAndFail(context);
}
Collection<ResolutionCandidate<CallableDescriptor>> candidates =
TaskPrioritizer.<CallableDescriptor>convertWithImpliedThis(
context.scope,
Collections.<ReceiverValue>singletonList(NO_RECEIVER),
constructors);
prioritizedTasks =
TaskPrioritizer
.<CallableDescriptor, FunctionDescriptor>computePrioritizedTasksFromCandidates(
context, functionReference, candidates, null);
} else {
context.trace.report(NOT_A_CLASS.on(calleeExpression));
return checkArgumentTypesAndFail(context);
}
} else if (calleeExpression instanceof JetThisReferenceExpression) {
functionReference = (JetThisReferenceExpression) calleeExpression;
DeclarationDescriptor containingDeclaration = context.scope.getContainingDeclaration();
if (containingDeclaration instanceof ConstructorDescriptor) {
containingDeclaration = containingDeclaration.getContainingDeclaration();
}
assert containingDeclaration instanceof ClassDescriptor;
ClassDescriptor classDescriptor = (ClassDescriptor) containingDeclaration;
Collection<ConstructorDescriptor> constructors = classDescriptor.getConstructors();
if (constructors.isEmpty()) {
context.trace.report(NO_CONSTRUCTOR.on(reportAbsenceOn));
return checkArgumentTypesAndFail(context);
}
List<ResolutionCandidate<CallableDescriptor>> candidates =
ResolutionCandidate.<CallableDescriptor>convertCollection(
constructors, JetPsiUtil.isSafeCall(context.call));
prioritizedTasks =
Collections.singletonList(
new ResolutionTask<CallableDescriptor, FunctionDescriptor>(
candidates, functionReference, context)); // !! DataFlowInfo.EMPTY
} else if (calleeExpression != null) {
// Here we handle the case where the callee expression must be something of type function,
// e.g. (foo.bar())(1, 2)
JetType calleeType =
expressionTypingServices.safeGetType(
context.scope,
calleeExpression,
NO_EXPECTED_TYPE,
context.dataFlowInfo,
context
.trace); // We are actually expecting a function, but there seems to be no easy
// way of expressing this
if (!KotlinBuiltIns.getInstance().isFunctionOrExtensionFunctionType(calleeType)) {
// checkTypesWithNoCallee(trace, scope, call);
if (!calleeType.isError()) {
context.trace.report(CALLEE_NOT_A_FUNCTION.on(calleeExpression, calleeType));
}
return checkArgumentTypesAndFail(context);
}
FunctionDescriptorImpl functionDescriptor =
new ExpressionAsFunctionDescriptor(
context.scope.getContainingDeclaration(),
Name.special("<for expression " + calleeExpression.getText() + ">"),
calleeExpression);
FunctionDescriptorUtil.initializeFromFunctionType(
functionDescriptor,
calleeType,
NO_RECEIVER_PARAMETER,
Modality.FINAL,
Visibilities.LOCAL);
ResolutionCandidate<CallableDescriptor> resolutionCandidate =
ResolutionCandidate.<CallableDescriptor>create(
functionDescriptor, JetPsiUtil.isSafeCall(context.call));
resolutionCandidate.setReceiverArgument(context.call.getExplicitReceiver());
resolutionCandidate.setExplicitReceiverKind(ExplicitReceiverKind.RECEIVER_ARGUMENT);
// strictly speaking, this is a hack:
// we need to pass a reference, but there's no reference in the PSI,
// so we wrap what we have into a fake reference and pass it on (unwrap on the other end)
functionReference = new JetFakeReference(calleeExpression);
prioritizedTasks =
Collections.singletonList(
new ResolutionTask<CallableDescriptor, FunctionDescriptor>(
Collections.singleton(resolutionCandidate), functionReference, context));
} else {
// checkTypesWithNoCallee(trace, scope, call);
return checkArgumentTypesAndFail(context);
}
}
return doResolveCallOrGetCachedResults(
ResolutionResultsCache.FUNCTION_MEMBER_TYPE,
context,
prioritizedTasks,
CallTransformer.FUNCTION_CALL_TRANSFORMER,
functionReference);
}