private void checkValueParameter(
@NotNull CallCheckerContext context,
@NotNull CallableDescriptor targetDescriptor,
@NotNull ValueArgument targetArgument,
@NotNull ValueParameterDescriptor targetParameterDescriptor) {
KtExpression argumentExpression = targetArgument.getArgumentExpression();
if (argumentExpression == null) {
return;
}
CallableDescriptor argumentCallee = getCalleeDescriptor(context, argumentExpression, false);
if (argumentCallee != null && inlinableParameters.contains(argumentCallee)) {
if (InlineUtil.isInline(targetDescriptor)
&& isInlinableParameter(targetParameterDescriptor)) {
if (allowsNonLocalReturns(argumentCallee)
&& !allowsNonLocalReturns(targetParameterDescriptor)) {
context
.getTrace()
.report(NON_LOCAL_RETURN_NOT_ALLOWED.on(argumentExpression, argumentExpression));
} else {
checkNonLocalReturn(context, argumentCallee, argumentExpression);
}
} else {
context
.getTrace()
.report(USAGE_IS_NOT_INLINABLE.on(argumentExpression, argumentExpression, descriptor));
}
}
}
private void checkValueParameter(
@NotNull BasicCallResolutionContext context,
@NotNull CallableDescriptor targetDescriptor,
@NotNull ValueArgument targetArgument,
@NotNull ValueParameterDescriptor targetParameterDescriptor) {
JetExpression argumentExpression = targetArgument.getArgumentExpression();
if (argumentExpression == null) {
return;
}
CallableDescriptor argumentCallee = getCalleeDescriptor(context, argumentExpression, false);
if (argumentCallee != null && inlinableParameters.contains(argumentCallee)) {
boolean isTargetInlineFunction =
targetDescriptor instanceof SimpleFunctionDescriptor
&& ((SimpleFunctionDescriptor) targetDescriptor).getInlineStrategy().isInline();
if (!isTargetInlineFunction || !isInlinableParameter(targetParameterDescriptor)) {
context.trace.report(
Errors.USAGE_IS_NOT_INLINABLE.on(argumentExpression, argumentExpression, descriptor));
} else {
if (allowsNonLocalReturns(argumentCallee)
&& !allowsNonLocalReturns(targetParameterDescriptor)) {
context.trace.report(
Errors.NON_LOCAL_RETURN_NOT_ALLOWED.on(
argumentExpression, argumentExpression, argumentCallee, descriptor));
} else {
checkNonLocalReturn(context, argumentCallee, argumentExpression);
}
}
}
}
// this is hack for a[b]++ -> a.set(b, a.get(b) + 1). Frontend generate fake expression for
// a.get(b) + 1.
@NotNull
private TranslationContext contextWithValueParameterAliasInArrayGetAccess(
@NotNull JsExpression toSetTo) {
ResolvedCall<FunctionDescriptor> resolvedCall =
BindingUtils.getResolvedCallForArrayAccess(
bindingContext(), expression, /*isGetter = */ false);
List<ResolvedValueArgument> arguments = resolvedCall.getValueArgumentsByIndex();
if (arguments == null) {
throw new IllegalStateException(
"Failed to arrange value arguments by index: " + resolvedCall.getResultingDescriptor());
}
ResolvedValueArgument lastArgument = arguments.get(arguments.size() - 1);
assert lastArgument instanceof ExpressionValueArgument
: "Last argument of array-like setter must be ExpressionValueArgument: " + lastArgument;
ValueArgument valueArgument = ((ExpressionValueArgument) lastArgument).getValueArgument();
assert valueArgument != null;
JetExpression element = valueArgument.getArgumentExpression();
return context()
.innerContextWithAliasesForExpressions(Collections.singletonMap(element, toSetTo));
}
@NotNull
@Override
protected List<IntentionAction> doCreateActions(@NotNull Diagnostic diagnostic) {
List<IntentionAction> actions = new LinkedList<IntentionAction>();
BindingContext context = ResolutionUtils.analyzeFully((JetFile) diagnostic.getPsiFile());
PsiElement diagnosticElement = diagnostic.getPsiElement();
if (!(diagnosticElement instanceof JetExpression)) {
LOG.error("Unexpected element: " + diagnosticElement.getText());
return Collections.emptyList();
}
JetExpression expression = (JetExpression) diagnosticElement;
JetType expectedType;
JetType expressionType;
if (diagnostic.getFactory() == Errors.TYPE_MISMATCH) {
DiagnosticWithParameters2<JetExpression, JetType, JetType> diagnosticWithParameters =
Errors.TYPE_MISMATCH.cast(diagnostic);
expectedType = diagnosticWithParameters.getA();
expressionType = diagnosticWithParameters.getB();
} else if (diagnostic.getFactory() == Errors.NULL_FOR_NONNULL_TYPE) {
DiagnosticWithParameters1<JetConstantExpression, JetType> diagnosticWithParameters =
Errors.NULL_FOR_NONNULL_TYPE.cast(diagnostic);
expectedType = diagnosticWithParameters.getA();
expressionType = TypeUtilsKt.makeNullable(expectedType);
} else if (diagnostic.getFactory() == Errors.CONSTANT_EXPECTED_TYPE_MISMATCH) {
DiagnosticWithParameters2<JetConstantExpression, String, JetType> diagnosticWithParameters =
Errors.CONSTANT_EXPECTED_TYPE_MISMATCH.cast(diagnostic);
expectedType = diagnosticWithParameters.getB();
expressionType = context.getType(expression);
if (expressionType == null) {
LOG.error("No type inferred: " + expression.getText());
return Collections.emptyList();
}
} else {
LOG.error("Unexpected diagnostic: " + DefaultErrorMessages.render(diagnostic));
return Collections.emptyList();
}
// We don't want to cast a cast or type-asserted expression:
if (!(expression instanceof JetBinaryExpressionWithTypeRHS)
&& !(expression.getParent() instanceof JetBinaryExpressionWithTypeRHS)) {
actions.add(new CastExpressionFix(expression, expectedType));
}
// Property initializer type mismatch property type:
JetProperty property = PsiTreeUtil.getParentOfType(expression, JetProperty.class);
if (property != null) {
JetPropertyAccessor getter = property.getGetter();
JetExpression initializer = property.getInitializer();
if (QuickFixUtil.canEvaluateTo(initializer, expression)
|| (getter != null
&& QuickFixUtil.canFunctionOrGetterReturnExpression(
property.getGetter(), expression))) {
LexicalScope scope =
CorePackage.getResolutionScope(
property, context, ResolutionUtils.getResolutionFacade(property));
JetType typeToInsert =
TypeUtils.approximateWithResolvableType(expressionType, scope, false);
actions.add(new ChangeVariableTypeFix(property, typeToInsert));
}
}
PsiElement expressionParent = expression.getParent();
// Mismatch in returned expression:
JetCallableDeclaration function =
expressionParent instanceof JetReturnExpression
? BindingContextUtilPackage.getTargetFunction(
(JetReturnExpression) expressionParent, context)
: PsiTreeUtil.getParentOfType(expression, JetFunction.class, true);
if (function instanceof JetFunction
&& QuickFixUtil.canFunctionOrGetterReturnExpression(function, expression)) {
LexicalScope scope =
CorePackage.getResolutionScope(
function, context, ResolutionUtils.getResolutionFacade(function));
JetType typeToInsert = TypeUtils.approximateWithResolvableType(expressionType, scope, false);
actions.add(new ChangeFunctionReturnTypeFix((JetFunction) function, typeToInsert));
}
// Fixing overloaded operators:
if (expression instanceof JetOperationExpression) {
ResolvedCall<?> resolvedCall = CallUtilPackage.getResolvedCall(expression, context);
if (resolvedCall != null) {
JetFunction declaration = getFunctionDeclaration(resolvedCall);
if (declaration != null) {
actions.add(new ChangeFunctionReturnTypeFix(declaration, expectedType));
}
}
}
// Change function return type when TYPE_MISMATCH is reported on call expression:
if (expression instanceof JetCallExpression) {
ResolvedCall<?> resolvedCall = CallUtilPackage.getResolvedCall(expression, context);
if (resolvedCall != null) {
JetFunction declaration = getFunctionDeclaration(resolvedCall);
if (declaration != null) {
actions.add(new ChangeFunctionReturnTypeFix(declaration, expectedType));
}
}
}
ResolvedCall<? extends CallableDescriptor> resolvedCall =
CallUtilPackage.getParentResolvedCall(expression, context, true);
if (resolvedCall != null) {
// to fix 'type mismatch' on 'if' branches
// todo: the same with 'when'
JetExpression parentIf = QuickFixUtil.getParentIfForBranch(expression);
JetExpression argumentExpression = (parentIf != null) ? parentIf : expression;
ValueArgument valueArgument =
CallUtilPackage.getValueArgumentForExpression(resolvedCall.getCall(), argumentExpression);
if (valueArgument != null) {
JetParameter correspondingParameter =
QuickFixUtil.getParameterDeclarationForValueArgument(resolvedCall, valueArgument);
JetType valueArgumentType =
diagnostic.getFactory() == Errors.NULL_FOR_NONNULL_TYPE
? expressionType
: context.getType(valueArgument.getArgumentExpression());
if (correspondingParameter != null && valueArgumentType != null) {
JetCallableDeclaration callable =
PsiTreeUtil.getParentOfType(
correspondingParameter, JetCallableDeclaration.class, true);
LexicalScope scope =
callable != null
? CorePackage.getResolutionScope(
callable, context, ResolutionUtils.getResolutionFacade(callable))
: null;
JetType typeToInsert =
TypeUtils.approximateWithResolvableType(valueArgumentType, scope, true);
actions.add(new ChangeParameterTypeFix(correspondingParameter, typeToInsert));
}
}
}
return actions;
}