@Nullable
private JetType lookupNamespaceOrClassObject(
@NotNull JetSimpleNameExpression expression, @NotNull ResolutionContext context) {
Name referencedName = expression.getReferencedNameAsName();
final ClassifierDescriptor classifier = context.scope.getClassifier(referencedName);
if (classifier != null) {
JetType classObjectType = classifier.getClassObjectType();
if (classObjectType != null) {
context.trace.record(REFERENCE_TARGET, expression, classifier);
JetType result =
getExtendedClassObjectType(classObjectType, referencedName, classifier, context);
if (result == null) {
context.trace.report(NO_CLASS_OBJECT.on(expression, classifier));
}
return DataFlowUtils.checkType(result, expression, context);
}
}
JetType[] result = new JetType[1];
TemporaryBindingTrace temporaryTrace =
TemporaryBindingTrace.create(
context.trace, "trace for namespace/class object lookup of name", referencedName);
if (furtherNameLookup(expression, result, context.replaceBindingTrace(temporaryTrace))) {
temporaryTrace.commit();
return DataFlowUtils.checkType(result[0], expression, context);
}
// To report NO_CLASS_OBJECT when no namespace found
if (classifier != null) {
if (classifier instanceof TypeParameterDescriptor) {
if (context.expressionPosition == ExpressionPosition.FREE) {
context.trace.report(
TYPE_PARAMETER_IS_NOT_AN_EXPRESSION.on(
expression, (TypeParameterDescriptor) classifier));
} else {
context.trace.report(
TYPE_PARAMETER_ON_LHS_OF_DOT.on(expression, (TypeParameterDescriptor) classifier));
}
} else if (context.expressionPosition == ExpressionPosition.FREE) {
context.trace.report(NO_CLASS_OBJECT.on(expression, classifier));
}
context.trace.record(REFERENCE_TARGET, expression, classifier);
JetScope scopeForStaticMembersResolution =
classifier instanceof ClassDescriptor
? getStaticNestedClassesScope((ClassDescriptor) classifier)
: new JetScopeImpl() {
@NotNull
@Override
public DeclarationDescriptor getContainingDeclaration() {
return classifier;
}
@Override
public String toString() {
return "Scope for the type parameter on the left hand side of dot";
}
};
return new NamespaceType(referencedName, scopeForStaticMembersResolution);
}
temporaryTrace.commit();
return result[0];
}
private boolean canImportMembersFrom(
@NotNull Collection<? extends DeclarationDescriptor> descriptors,
@NotNull JetSimpleNameExpression reference,
@NotNull BindingTrace trace,
@NotNull LookupMode lookupMode) {
if (lookupMode == LookupMode.ONLY_CLASSES) {
return true;
}
if (descriptors.size() == 1) {
return canImportMembersFrom(descriptors.iterator().next(), reference, trace, lookupMode);
}
TemporaryBindingTrace temporaryTrace =
TemporaryBindingTrace.create(
trace, "trace to find out if members can be imported from", reference);
boolean canImport = false;
for (DeclarationDescriptor descriptor : descriptors) {
canImport |= canImportMembersFrom(descriptor, reference, temporaryTrace, lookupMode);
}
if (!canImport) {
temporaryTrace.commit();
}
return canImport;
}
@Override
public JetTypeInfo visitObjectLiteralExpression(
@NotNull final JetObjectLiteralExpression expression, final ExpressionTypingContext context) {
DelegatingBindingTrace delegatingBindingTrace =
context.trace.get(TRACE_DELTAS_CACHE, expression.getObjectDeclaration());
if (delegatingBindingTrace != null) {
delegatingBindingTrace.addAllMyDataTo(context.trace);
JetType type = context.trace.get(EXPRESSION_TYPE, expression);
return DataFlowUtils.checkType(type, expression, context, context.dataFlowInfo);
}
final JetType[] result = new JetType[1];
final TemporaryBindingTrace temporaryTrace =
TemporaryBindingTrace.create(
context.trace, "trace to resolve object literal expression", expression);
ObservableBindingTrace.RecordHandler<PsiElement, ClassDescriptor> handler =
new ObservableBindingTrace.RecordHandler<PsiElement, ClassDescriptor>() {
@Override
public void handleRecord(
WritableSlice<PsiElement, ClassDescriptor> slice,
PsiElement declaration,
final ClassDescriptor descriptor) {
if (slice == CLASS && declaration == expression.getObjectDeclaration()) {
JetType defaultType =
DeferredType.create(
context.trace,
createRecursionIntolerantLazyValueWithDefault(
ErrorUtils.createErrorType("Recursive dependency"),
new Function0<JetType>() {
@Override
public JetType invoke() {
return descriptor.getDefaultType();
}
}));
result[0] = defaultType;
if (!context.trace.get(PROCESSED, expression)) {
temporaryTrace.record(EXPRESSION_TYPE, expression, defaultType);
temporaryTrace.record(PROCESSED, expression);
}
}
}
};
ObservableBindingTrace traceAdapter = new ObservableBindingTrace(temporaryTrace);
traceAdapter.addHandler(CLASS, handler);
TopDownAnalyzer.processClassOrObject(
context.replaceBindingTrace(traceAdapter).replaceContextDependency(INDEPENDENT),
context.scope.getContainingDeclaration(),
expression.getObjectDeclaration());
DelegatingBindingTrace cloneDelta =
new DelegatingBindingTrace(
new BindingTraceContext().getBindingContext(),
"cached delta trace for object literal expression resolve",
expression);
temporaryTrace.addAllMyDataTo(cloneDelta);
context.trace.record(TRACE_DELTAS_CACHE, expression.getObjectDeclaration(), cloneDelta);
temporaryTrace.commit();
return DataFlowUtils.checkType(result[0], expression, context, context.dataFlowInfo);
}
@Nullable
private JetType lookupNamespaceOrClassObject(
@NotNull JetSimpleNameExpression expression, @NotNull ResolutionContext context) {
Name referencedName = expression.getReferencedNameAsName();
ClassifierDescriptor classifier = context.scope.getClassifier(referencedName);
if (classifier != null) {
JetType classObjectType = classifier.getClassObjectType();
if (classObjectType != null) {
context.trace.record(REFERENCE_TARGET, expression, classifier);
JetType result;
if (context.expressionPosition == ExpressionPosition.LHS_OF_DOT
&& classifier instanceof ClassDescriptor) {
JetScope scope =
new ChainedScope(
classifier,
classObjectType.getMemberScope(),
getStaticNestedClassesScope((ClassDescriptor) classifier));
result = new NamespaceType(referencedName, scope);
} else if (context.expressionPosition == ExpressionPosition.LHS_OF_DOT
|| classifier.isClassObjectAValue()) {
result = classObjectType;
} else {
context.trace.report(NO_CLASS_OBJECT.on(expression, classifier));
result = null;
}
return DataFlowUtils.checkType(result, expression, context);
}
}
JetType[] result = new JetType[1];
TemporaryBindingTrace temporaryTrace =
TemporaryBindingTrace.create(
context.trace, "trace for namespace/class object lookup of name", referencedName);
if (furtherNameLookup(expression, result, context.replaceBindingTrace(temporaryTrace))) {
temporaryTrace.commit();
return DataFlowUtils.checkType(result[0], expression, context);
}
// To report NO_CLASS_OBJECT when no namespace found
if (classifier != null) {
if (context.expressionPosition == ExpressionPosition.FREE) {
context.trace.report(NO_CLASS_OBJECT.on(expression, classifier));
}
context.trace.record(REFERENCE_TARGET, expression, classifier);
JetScope scopeForStaticMembersResolution =
classifier instanceof ClassDescriptor
? getStaticNestedClassesScope((ClassDescriptor) classifier)
: JetScope.EMPTY;
return new NamespaceType(referencedName, scopeForStaticMembersResolution);
}
temporaryTrace.commit();
return result[0];
}
private <D extends CallableDescriptor, F extends D>
OverloadResolutionResultsImpl<F> doResolveCallOrGetCachedResults(
@NotNull ResolutionResultsCache.MemberType<F> memberType,
@NotNull BasicCallResolutionContext context,
@NotNull List<ResolutionTask<D, F>> prioritizedTasks,
@NotNull CallTransformer<D, F> callTransformer,
@NotNull JetReferenceExpression reference) {
OverloadResolutionResultsImpl<F> results = null;
TracingStrategy tracing =
prioritizedTasks.isEmpty()
? TracingStrategy.EMPTY
: prioritizedTasks.iterator().next().tracing;
TemporaryBindingTrace traceToResolveCall =
TemporaryBindingTrace.create(context.trace, "trace to resolve call", context.call);
CallKey callKey = CallResolverUtil.createCallKey(context);
if (callKey != null) {
OverloadResolutionResultsImpl<F> cachedResults =
context.resolutionResultsCache.getResolutionResults(callKey, memberType);
if (cachedResults != null) {
DelegatingBindingTrace deltasTraceForResolve =
context.resolutionResultsCache.getResolutionTrace(callKey);
assert deltasTraceForResolve != null;
deltasTraceForResolve.addAllMyDataTo(traceToResolveCall);
results = cachedResults;
}
}
if (results == null) {
BasicCallResolutionContext newContext = context.replaceBindingTrace(traceToResolveCall);
results = doResolveCall(newContext, prioritizedTasks, callTransformer, reference);
DelegatingBindingTrace deltasTraceForTypeInference =
((OverloadResolutionResultsImpl) results).getTrace();
if (deltasTraceForTypeInference != null) {
deltasTraceForTypeInference.addAllMyDataTo(traceToResolveCall);
}
completeTypeInferenceDependentOnFunctionLiterals(newContext, results, tracing);
cacheResults(memberType, context, results, traceToResolveCall, tracing);
}
traceToResolveCall.commit();
if (!prioritizedTasks.isEmpty() && context.contextDependency == ContextDependency.INDEPENDENT) {
results = completeTypeInferenceDependentOnExpectedType(context, results, tracing);
}
if (extension != null) {
extension.run(results, context);
}
return results;
}
@NotNull
public JetTypeInfo getSimpleNameExpressionTypeInfo(
@NotNull JetSimpleNameExpression nameExpression,
@NotNull ReceiverValue receiver,
@Nullable ASTNode callOperationNode,
@NotNull ResolutionContext context) {
boolean[] result = new boolean[1];
TemporaryBindingTrace traceForVariable =
TemporaryBindingTrace.create(context.trace, "trace to resolve as variable", nameExpression);
JetType type =
getVariableType(
nameExpression,
receiver,
callOperationNode,
context.replaceBindingTrace(traceForVariable),
result);
if (result[0]) {
traceForVariable.commit();
if (type instanceof NamespaceType && context.expressionPosition == ExpressionPosition.FREE) {
type = null;
}
return JetTypeInfo.create(type, context.dataFlowInfo);
}
Call call =
CallMaker.makeCall(
nameExpression,
receiver,
callOperationNode,
nameExpression,
Collections.<ValueArgument>emptyList());
TemporaryBindingTrace traceForFunction =
TemporaryBindingTrace.create(context.trace, "trace to resolve as function", nameExpression);
ResolvedCall<FunctionDescriptor> resolvedCall =
getResolvedCallForFunction(
call,
nameExpression,
receiver,
context,
ResolveMode.TOP_LEVEL_CALL,
ResolutionResultsCache.create(),
result);
if (result[0]) {
FunctionDescriptor functionDescriptor =
resolvedCall != null ? resolvedCall.getResultingDescriptor() : null;
traceForFunction.commit();
boolean hasValueParameters =
functionDescriptor == null || functionDescriptor.getValueParameters().size() > 0;
context.trace.report(
FUNCTION_CALL_EXPECTED.on(nameExpression, nameExpression, hasValueParameters));
type = functionDescriptor != null ? functionDescriptor.getReturnType() : null;
return JetTypeInfo.create(type, context.dataFlowInfo);
}
traceForVariable.commit();
return JetTypeInfo.create(null, context.dataFlowInfo);
}
@NotNull
private <D extends CallableDescriptor, F extends D>
OverloadResolutionResultsImpl<F> performResolutionGuardedForExtraFunctionLiteralArguments(
@NotNull ResolutionTask<D, F> task, @NotNull CallTransformer<D, F> callTransformer) {
OverloadResolutionResultsImpl<F> results = performResolution(task, callTransformer);
// If resolution fails, we should check for some of the following situations:
// class A {
// val foo = Bar() // The following is intended to be an anonymous initializer,
// // but is treated as a function literal argument
// {
// ...
// }
// }
//
// fun foo() {
// bar {
// buzz()
// {...} // intended to be a returned from the outer literal
// }
// }
ImmutableSet<OverloadResolutionResults.Code> someFailed =
ImmutableSet.of(MANY_FAILED_CANDIDATES, SINGLE_CANDIDATE_ARGUMENT_MISMATCH);
if (someFailed.contains(results.getResultCode())
&& !task.call.getFunctionLiteralArguments().isEmpty()
&& task.contextDependency
== ContextDependency.INDEPENDENT) { // For nested calls there are no such cases
// We have some candidates that failed for some reason
// And we have a suspect: the function literal argument
// Now, we try to remove this argument and see if it helps
DelegatingCall callWithoutFLArgs =
new DelegatingCall(task.call) {
@NotNull
@Override
public List<JetExpression> getFunctionLiteralArguments() {
return Collections.emptyList();
}
};
TemporaryBindingTrace temporaryTrace =
TemporaryBindingTrace.create(
task.trace, "trace for resolution guarded for extra function literal arguments");
ResolutionTask<D, F> newTask =
task.replaceBindingTrace(temporaryTrace).replaceCall(callWithoutFLArgs);
OverloadResolutionResultsImpl<F> resultsWithFunctionLiteralsStripped =
performResolution(newTask, callTransformer);
if (resultsWithFunctionLiteralsStripped.isSuccess()
|| resultsWithFunctionLiteralsStripped.isAmbiguity()) {
task.tracing.danglingFunctionLiteralArgumentSuspected(
task.trace, task.call.getFunctionLiteralArguments());
}
}
return results;
}
@Nullable
private JetType getVariableType(
@NotNull JetSimpleNameExpression nameExpression,
@NotNull ReceiverValue receiver,
@Nullable ASTNode callOperationNode,
@NotNull ResolutionContext context,
@NotNull boolean[] result) {
TemporaryBindingTrace traceForVariable =
TemporaryBindingTrace.create(
context.trace, "trace to resolve as local variable or property", nameExpression);
CallResolver callResolver = expressionTypingServices.getCallResolver();
Call call = CallMaker.makePropertyCall(receiver, callOperationNode, nameExpression);
OverloadResolutionResults<VariableDescriptor> resolutionResult =
callResolver.resolveSimpleProperty(
BasicCallResolutionContext.create(
context.replaceBindingTrace(traceForVariable),
call,
ResolveMode.TOP_LEVEL_CALL,
ResolutionResultsCache.create()));
if (!resolutionResult.isNothing()) {
traceForVariable.commit();
checkSuper(receiver, resolutionResult, context.trace, nameExpression);
result[0] = true;
return resolutionResult.isSingleResult()
? resolutionResult.getResultingDescriptor().getReturnType()
: null;
}
ResolutionContext newContext =
receiver.exists() ? context.replaceScope(receiver.getType().getMemberScope()) : context;
TemporaryBindingTrace traceForNamespaceOrClassObject =
TemporaryBindingTrace.create(
context.trace, "trace to resolve as namespace or class object", nameExpression);
JetType jetType =
lookupNamespaceOrClassObject(
nameExpression, newContext.replaceBindingTrace(traceForNamespaceOrClassObject));
if (jetType != null) {
traceForNamespaceOrClassObject.commit();
// Uncommitted changes in temp context
context.trace.record(RESOLUTION_SCOPE, nameExpression, context.scope);
if (context.dataFlowInfo.hasTypeInfoConstraints()) {
context.trace.record(
NON_DEFAULT_EXPRESSION_DATA_FLOW, nameExpression, context.dataFlowInfo);
}
result[0] = true;
return jetType;
}
result[0] = false;
return null;
}
@NotNull
private CallTranslator finish() {
if (resolvedCall == null) {
assert descriptor != null;
resolvedCall =
ResolvedCallImpl.create(
ResolutionCandidate.create(
descriptor,
DescriptorUtils.safeGetValue(descriptor.getExpectedThisObject()),
DescriptorUtils.safeGetValue(descriptor.getReceiverParameter()),
ExplicitReceiverKind.THIS_OBJECT,
false),
TemporaryBindingTrace.create(
new BindingTraceContext(), "trace to resolve call (in js)"));
}
if (descriptor == null) {
descriptor = resolvedCall.getCandidateDescriptor().getOriginal();
}
assert resolvedCall != null;
return new CallTranslator(receiver, callee, args, resolvedCall, descriptor, callType, context);
}
@NotNull
private <D extends CallableDescriptor, F extends D>
OverloadResolutionResultsImpl<F> performResolution(
@NotNull ResolutionTask<D, F> task, @NotNull CallTransformer<D, F> callTransformer) {
for (ResolutionCandidate<D> resolutionCandidate : task.getCandidates()) {
TemporaryBindingTrace candidateTrace =
TemporaryBindingTrace.create(task.trace, "trace to resolve candidate");
Collection<CallCandidateResolutionContext<D>> contexts =
callTransformer.createCallContexts(resolutionCandidate, task, candidateTrace);
for (CallCandidateResolutionContext<D> context : contexts) {
candidateResolver.performResolutionForCandidateCall(context, task);
/* important for 'variable as function case': temporary bind reference to descriptor (will be rewritten)
to have a binding to variable while 'invoke' call resolve */
task.tracing.bindReference(context.candidateCall.getTrace(), context.candidateCall);
Collection<ResolvedCallWithTrace<F>> calls =
callTransformer.transformCall(context, this, task);
for (ResolvedCallWithTrace<F> call : calls) {
task.tracing.bindReference(call.getTrace(), call);
task.tracing.bindResolvedCall(call.getTrace(), call);
task.getResolvedCalls().add(call);
}
}
}
OverloadResolutionResultsImpl<F> results =
ResolutionResultsHandler.INSTANCE.computeResultAndReportErrors(
task.trace, task.tracing, task.getResolvedCalls());
if (!results.isSingleResult() && !results.isIncomplete()) {
argumentTypeResolver.checkTypesWithNoCallee(task.toBasic());
}
return results;
}
@NotNull
public TypeInfoForCall getCallExpressionTypeInfoForCallWithoutFinalTypeCheck(
@NotNull JetCallExpression callExpression,
@NotNull ReceiverValue receiver,
@Nullable ASTNode callOperationNode,
@NotNull ResolutionContext context,
@NotNull ResolveMode resolveMode) {
boolean[] result = new boolean[1];
Call call = CallMaker.makeCall(receiver, callOperationNode, callExpression);
TemporaryBindingTrace traceForFunction =
TemporaryBindingTrace.create(
context.trace, "trace to resolve as function call", callExpression);
ResolvedCall<FunctionDescriptor> resolvedCall =
getResolvedCallForFunction(
call,
callExpression,
receiver,
context.replaceBindingTrace(traceForFunction),
resolveMode,
result);
if (result[0]) {
FunctionDescriptor functionDescriptor =
resolvedCall != null ? resolvedCall.getResultingDescriptor() : null;
traceForFunction.commit();
if (callExpression.getValueArgumentList() == null
&& callExpression.getFunctionLiteralArguments().isEmpty()) {
// there are only type arguments
boolean hasValueParameters =
functionDescriptor == null || functionDescriptor.getValueParameters().size() > 0;
context.trace.report(
FUNCTION_CALL_EXPECTED.on(callExpression, callExpression, hasValueParameters));
}
if (functionDescriptor == null) {
return TypeInfoForCall.create(null, context.dataFlowInfo);
}
JetType type = functionDescriptor.getReturnType();
return TypeInfoForCall.create(
type, resolvedCall.getDataFlowInfo(), resolvedCall, call, context, resolveMode);
}
JetExpression calleeExpression = callExpression.getCalleeExpression();
if (calleeExpression instanceof JetSimpleNameExpression
&& callExpression.getTypeArgumentList() == null) {
TemporaryBindingTrace traceForVariable =
TemporaryBindingTrace.create(
context.trace, "trace to resolve as variable with 'invoke' call", callExpression);
JetType type =
getVariableType(
(JetSimpleNameExpression) calleeExpression,
receiver,
callOperationNode,
context.replaceBindingTrace(traceForVariable),
result);
if (result[0]) {
traceForVariable.commit();
context.trace.report(
FUNCTION_EXPECTED.on(
(JetReferenceExpression) calleeExpression,
calleeExpression,
type != null ? type : ErrorUtils.createErrorType("")));
return TypeInfoForCall.create(null, context.dataFlowInfo);
}
}
traceForFunction.commit();
return TypeInfoForCall.create(null, context.dataFlowInfo);
}
public void commit() {
trace.commit();
cache.commit();
}
public TemporaryTraceAndCache(
ResolutionContext context, String debugName, JetExpression expression) {
trace = TemporaryBindingTrace.create(context.trace, debugName, expression);
cache = new TemporaryResolutionResultsCache(context.resolutionResultsCache);
}
@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
private <D extends CallableDescriptor, F extends D>
OverloadResolutionResultsImpl<F> doResolveCall(
@NotNull BasicCallResolutionContext context,
@NotNull List<ResolutionTask<D, F>> prioritizedTasks, // high to low priority
@NotNull CallTransformer<D, F> callTransformer,
@NotNull JetReferenceExpression reference) {
ResolutionDebugInfo.Data debugInfo = ResolutionDebugInfo.create();
context.trace.record(
ResolutionDebugInfo.RESOLUTION_DEBUG_INFO, context.call.getCallElement(), debugInfo);
context.trace.record(RESOLUTION_SCOPE, context.call.getCalleeExpression(), context.scope);
if (context.dataFlowInfo.hasTypeInfoConstraints()) {
context.trace.record(
NON_DEFAULT_EXPRESSION_DATA_FLOW,
context.call.getCalleeExpression(),
context.dataFlowInfo);
}
debugInfo.set(ResolutionDebugInfo.TASKS, prioritizedTasks);
if (context.checkArguments == CheckValueArgumentsMode.ENABLED) {
argumentTypeResolver.analyzeArgumentsAndRecordTypes(context);
}
TemporaryBindingTrace traceForFirstNonemptyCandidateSet = null;
OverloadResolutionResultsImpl<F> resultsForFirstNonemptyCandidateSet = null;
for (ResolutionTask<D, F> task : prioritizedTasks) {
TemporaryBindingTrace taskTrace =
TemporaryBindingTrace.create(
context.trace, "trace to resolve a task for", task.reference);
OverloadResolutionResultsImpl<F> results =
performResolutionGuardedForExtraFunctionLiteralArguments(
task.replaceBindingTrace(taskTrace), callTransformer);
if (results.isSuccess() || results.isAmbiguity()) {
taskTrace.commit();
if (results.isSuccess()) {
debugInfo.set(ResolutionDebugInfo.RESULT, results.getResultingCall());
}
resolveFunctionArguments(context, results);
return results;
}
if (results.getResultCode() == INCOMPLETE_TYPE_INFERENCE) {
results.setTrace(taskTrace);
return results;
}
boolean updateResults =
traceForFirstNonemptyCandidateSet == null
|| (resultsForFirstNonemptyCandidateSet.getResultCode()
== CANDIDATES_WITH_WRONG_RECEIVER
&& results.getResultCode() != CANDIDATES_WITH_WRONG_RECEIVER);
if (!task.getCandidates().isEmpty() && !results.isNothing() && updateResults) {
traceForFirstNonemptyCandidateSet = taskTrace;
resultsForFirstNonemptyCandidateSet = results;
}
}
if (traceForFirstNonemptyCandidateSet != null) {
traceForFirstNonemptyCandidateSet.commit();
if (resultsForFirstNonemptyCandidateSet.isSingleResult()) {
debugInfo.set(
ResolutionDebugInfo.RESULT, resultsForFirstNonemptyCandidateSet.getResultingCall());
}
resolveFunctionArguments(context, resultsForFirstNonemptyCandidateSet);
} else {
context.trace.report(UNRESOLVED_REFERENCE.on(reference, reference));
argumentTypeResolver.checkTypesWithNoCallee(context, RESOLVE_FUNCTION_ARGUMENTS);
}
return resultsForFirstNonemptyCandidateSet != null
? resultsForFirstNonemptyCandidateSet
: OverloadResolutionResultsImpl.<F>nameNotFound();
}