public static void registerQuickFix(
PsiMember refElement,
PsiJavaCodeReferenceElement place,
PsiClass accessObjectClass,
HighlightInfo error) {
if (refElement instanceof PsiField && place instanceof PsiReferenceExpression) {
final PsiField psiField = (PsiField) refElement;
final PsiClass containingClass = psiField.getContainingClass();
if (containingClass != null) {
if (PsiUtil.isOnAssignmentLeftHand((PsiExpression) place)) {
final PsiMethod setterPrototype = PropertyUtil.generateSetterPrototype(psiField);
final PsiMethod setter = containingClass.findMethodBySignature(setterPrototype, true);
if (setter != null && PsiUtil.isAccessible(setter, place, accessObjectClass)) {
QuickFixAction.registerQuickFixAction(
error, new ReplaceInaccessibleFieldWithGetterSetterFix(place, setter, true));
}
} else if (PsiUtil.isAccessedForReading((PsiExpression) place)) {
final PsiMethod getterPrototype = PropertyUtil.generateGetterPrototype(psiField);
final PsiMethod getter = containingClass.findMethodBySignature(getterPrototype, true);
if (getter != null && PsiUtil.isAccessible(getter, place, accessObjectClass)) {
QuickFixAction.registerQuickFixAction(
error, new ReplaceInaccessibleFieldWithGetterSetterFix(place, getter, false));
}
}
}
}
}
private static ArrayList<PsiMethod> filterConstructorsIfFieldAlreadyAssigned(
PsiMethod[] constructors, PsiField field) {
final ArrayList<PsiMethod> result = new ArrayList<PsiMethod>(Arrays.asList(constructors));
for (PsiReference reference :
ReferencesSearch.search(field, new LocalSearchScope(constructors))) {
final PsiElement element = reference.getElement();
if (element instanceof PsiReferenceExpression
&& PsiUtil.isOnAssignmentLeftHand((PsiExpression) element)) {
result.remove(PsiTreeUtil.getParentOfType(element, PsiMethod.class));
}
}
return result;
}
@Nullable
public NonCodeUsageSearchInfo findUsages(
@NotNull final PsiElement element,
@NotNull final PsiElement[] allElementsToDelete,
@NotNull final List<UsageInfo> usages) {
Condition<PsiElement> insideDeletedCondition = getUsageInsideDeletedFilter(allElementsToDelete);
if (element instanceof PsiClass) {
findClassUsages((PsiClass) element, allElementsToDelete, usages);
if (element instanceof PsiTypeParameter) {
findTypeParameterExternalUsages((PsiTypeParameter) element, usages);
}
} else if (element instanceof PsiMethod) {
insideDeletedCondition = findMethodUsages((PsiMethod) element, allElementsToDelete, usages);
} else if (element instanceof PsiField) {
insideDeletedCondition = findFieldUsages((PsiField) element, usages, allElementsToDelete);
} else if (element instanceof PsiParameter) {
LOG.assertTrue(((PsiParameter) element).getDeclarationScope() instanceof PsiMethod);
findParameterUsages((PsiParameter) element, usages);
} else if (element instanceof PsiLocalVariable) {
for (PsiReference reference : ReferencesSearch.search(element)) {
PsiReferenceExpression referencedElement = (PsiReferenceExpression) reference.getElement();
final PsiStatement statement =
PsiTreeUtil.getParentOfType(referencedElement, PsiStatement.class);
boolean isSafeToDelete = PsiUtil.isAccessedForWriting(referencedElement);
boolean hasSideEffects = false;
if (PsiUtil.isOnAssignmentLeftHand(referencedElement)) {
hasSideEffects =
RemoveUnusedVariableUtil.checkSideEffects(
((PsiAssignmentExpression) referencedElement.getParent()).getRExpression(),
((PsiLocalVariable) element),
new ArrayList<>());
}
usages.add(
new SafeDeleteReferenceJavaDeleteUsageInfo(
statement, element, isSafeToDelete && !hasSideEffects));
}
}
return new NonCodeUsageSearchInfo(insideDeletedCondition, element);
}
public void inlineElement(
final Project project, final Editor editor, final PsiElement psiElement) {
final PsiParameter psiParameter = (PsiParameter) psiElement;
final PsiParameterList parameterList = (PsiParameterList) psiParameter.getParent();
if (!(parameterList.getParent() instanceof PsiMethod)) {
return;
}
final int index = parameterList.getParameterIndex(psiParameter);
final PsiMethod method = (PsiMethod) parameterList.getParent();
String errorMessage = getCannotInlineMessage(psiParameter, method);
if (errorMessage != null) {
CommonRefactoringUtil.showErrorHint(
project,
editor,
errorMessage,
RefactoringBundle.message("inline.parameter.refactoring"),
null);
return;
}
final Ref<PsiExpression> refInitializer = new Ref<PsiExpression>();
final Ref<PsiExpression> refConstantInitializer = new Ref<PsiExpression>();
final Ref<PsiCallExpression> refMethodCall = new Ref<PsiCallExpression>();
final List<PsiReference> occurrences =
Collections.synchronizedList(new ArrayList<PsiReference>());
final Collection<PsiFile> containingFiles = Collections.synchronizedSet(new HashSet<PsiFile>());
containingFiles.add(psiParameter.getContainingFile());
boolean result =
ReferencesSearch.search(method)
.forEach(
new Processor<PsiReference>() {
public boolean process(final PsiReference psiReference) {
PsiElement element = psiReference.getElement();
final PsiElement parent = element.getParent();
if (parent instanceof PsiCallExpression) {
final PsiCallExpression methodCall = (PsiCallExpression) parent;
occurrences.add(psiReference);
containingFiles.add(element.getContainingFile());
final PsiExpression[] expressions =
methodCall.getArgumentList().getExpressions();
if (expressions.length <= index) return false;
PsiExpression argument = expressions[index];
if (!refInitializer.isNull()) {
return argument != null
&& PsiEquivalenceUtil.areElementsEquivalent(
refInitializer.get(), argument)
&& PsiEquivalenceUtil.areElementsEquivalent(
refMethodCall.get(), methodCall);
}
if (InlineToAnonymousConstructorProcessor.isConstant(argument)
|| getReferencedFinalField(argument) != null) {
if (refConstantInitializer.isNull()) {
refConstantInitializer.set(argument);
} else if (!isSameConstant(argument, refConstantInitializer.get())) {
return false;
}
} else if (!isRecursiveReferencedParameter(argument, psiParameter)) {
if (!refConstantInitializer.isNull()) return false;
refInitializer.set(argument);
refMethodCall.set(methodCall);
}
}
return true;
}
});
final int offset = editor.getCaretModel().getOffset();
final PsiElement refExpr = psiElement.getContainingFile().findElementAt(offset);
final PsiCodeBlock codeBlock = PsiTreeUtil.getParentOfType(refExpr, PsiCodeBlock.class);
if (codeBlock != null) {
final PsiElement[] defs = DefUseUtil.getDefs(codeBlock, psiParameter, refExpr);
if (defs.length == 1) {
final PsiElement def = defs[0];
if (def instanceof PsiReferenceExpression
&& PsiUtil.isOnAssignmentLeftHand((PsiExpression) def)) {
final PsiExpression rExpr = ((PsiAssignmentExpression) def.getParent()).getRExpression();
if (rExpr != null) {
final PsiElement[] refs = DefUseUtil.getRefs(codeBlock, psiParameter, refExpr);
if (InlineLocalHandler.checkRefsInAugmentedAssignmentOrUnaryModified(refs, def)
== null) {
new WriteCommandAction(project) {
@Override
protected void run(Result result) throws Throwable {
for (final PsiElement ref : refs) {
InlineUtil.inlineVariable(
psiParameter, rExpr, (PsiJavaCodeReferenceElement) ref);
}
def.getParent().delete();
}
}.execute();
return;
}
}
}
}
}
if (occurrences.isEmpty()) {
CommonRefactoringUtil.showErrorHint(
project,
editor,
"Method has no usages",
RefactoringBundle.message("inline.parameter.refactoring"),
null);
return;
}
if (!result) {
CommonRefactoringUtil.showErrorHint(
project,
editor,
"Cannot find constant initializer for parameter",
RefactoringBundle.message("inline.parameter.refactoring"),
null);
return;
}
if (!refInitializer.isNull()) {
if (ApplicationManager.getApplication().isUnitTestMode()) {
final InlineParameterExpressionProcessor processor =
new InlineParameterExpressionProcessor(
refMethodCall.get(),
method,
psiParameter,
refInitializer.get(),
method
.getProject()
.getUserData(InlineParameterExpressionProcessor.CREATE_LOCAL_FOR_TESTS));
processor.run();
} else {
final boolean createLocal = ReferencesSearch.search(psiParameter).findAll().size() > 1;
InlineParameterDialog dlg =
new InlineParameterDialog(
refMethodCall.get(), method, psiParameter, refInitializer.get(), createLocal);
dlg.show();
}
return;
}
if (refConstantInitializer.isNull()) {
CommonRefactoringUtil.showErrorHint(
project,
editor,
"Cannot find constant initializer for parameter",
RefactoringBundle.message("inline.parameter.refactoring"),
null);
return;
}
final Ref<Boolean> isNotConstantAccessible = new Ref<Boolean>();
final PsiExpression constantExpression = refConstantInitializer.get();
constantExpression.accept(
new JavaRecursiveElementVisitor() {
@Override
public void visitReferenceExpression(PsiReferenceExpression expression) {
super.visitReferenceExpression(expression);
final PsiElement resolved = expression.resolve();
if (resolved instanceof PsiMember
&& !PsiUtil.isAccessible((PsiMember) resolved, method, null)) {
isNotConstantAccessible.set(Boolean.TRUE);
}
}
});
if (!isNotConstantAccessible.isNull() && isNotConstantAccessible.get()) {
CommonRefactoringUtil.showErrorHint(
project,
editor,
"Constant initializer is not accessible in method body",
RefactoringBundle.message("inline.parameter.refactoring"),
null);
return;
}
for (PsiReference psiReference : ReferencesSearch.search(psiParameter)) {
final PsiElement element = psiReference.getElement();
if (element instanceof PsiExpression
&& PsiUtil.isAccessedForWriting((PsiExpression) element)) {
CommonRefactoringUtil.showErrorHint(
project,
editor,
"Inline parameter which has write usages is not supported",
RefactoringBundle.message("inline.parameter.refactoring"),
null);
return;
}
}
if (!ApplicationManager.getApplication().isUnitTestMode()) {
String occurencesString = RefactoringBundle.message("occurences.string", occurrences.size());
String question =
RefactoringBundle.message(
"inline.parameter.confirmation",
psiParameter.getName(),
constantExpression.getText())
+ " "
+ occurencesString;
RefactoringMessageDialog dialog =
new RefactoringMessageDialog(
REFACTORING_NAME,
question,
HelpID.INLINE_VARIABLE,
"OptionPane.questionIcon",
true,
project);
dialog.show();
if (!dialog.isOK()) {
return;
}
}
final RefactoringEventData data = new RefactoringEventData();
data.addElement(psiElement.copy());
project
.getMessageBus()
.syncPublisher(RefactoringEventListener.REFACTORING_EVENT_TOPIC)
.refactoringStarted(REFACTORING_ID, data);
SameParameterValueInspection.InlineParameterValueFix.inlineSameParameterValue(
method, psiParameter, constantExpression);
project
.getMessageBus()
.syncPublisher(RefactoringEventListener.REFACTORING_EVENT_TOPIC)
.refactoringDone(REFACTORING_ID, null);
}
@Nullable
public static PsiType getFunctionalInterfaceType(
PsiElement expression, final boolean tryToSubstitute, int paramIdx) {
PsiElement parent = expression.getParent();
PsiElement element = expression;
while (parent instanceof PsiParenthesizedExpression
|| parent instanceof PsiConditionalExpression) {
if (parent instanceof PsiConditionalExpression
&& ((PsiConditionalExpression) parent).getThenExpression() != element
&& ((PsiConditionalExpression) parent).getElseExpression() != element) break;
element = parent;
parent = parent.getParent();
}
if (parent instanceof PsiArrayInitializerExpression) {
final PsiType psiType = ((PsiArrayInitializerExpression) parent).getType();
if (psiType instanceof PsiArrayType) {
return ((PsiArrayType) psiType).getComponentType();
}
} else if (parent instanceof PsiTypeCastExpression) {
final PsiType castType = ((PsiTypeCastExpression) parent).getType();
if (castType instanceof PsiIntersectionType) {
for (PsiType conjunctType : ((PsiIntersectionType) castType).getConjuncts()) {
if (getFunctionalInterfaceMethod(conjunctType) != null) return conjunctType;
}
}
return castType;
} else if (parent instanceof PsiVariable) {
return ((PsiVariable) parent).getType();
} else if (parent instanceof PsiAssignmentExpression
&& expression instanceof PsiExpression
&& !PsiUtil.isOnAssignmentLeftHand((PsiExpression) expression)) {
final PsiExpression lExpression = ((PsiAssignmentExpression) parent).getLExpression();
return lExpression.getType();
} else if (parent instanceof PsiExpressionList) {
final PsiExpressionList expressionList = (PsiExpressionList) parent;
final int lambdaIdx = getLambdaIdx(expressionList, expression);
if (lambdaIdx > -1) {
PsiType cachedType = null;
final Pair<PsiMethod, PsiSubstitutor> method = MethodCandidateInfo.getCurrentMethod(parent);
if (method != null) {
final PsiParameter[] parameters = method.first.getParameterList().getParameters();
cachedType =
lambdaIdx < parameters.length
? method.second.substitute(
getNormalizedType(
parameters[adjustLambdaIdx(lambdaIdx, method.first, parameters)]))
: null;
if (!tryToSubstitute) return cachedType;
}
PsiElement gParent = expressionList.getParent();
if (gParent instanceof PsiAnonymousClass) {
gParent = gParent.getParent();
}
if (gParent instanceof PsiCall) {
final PsiCall contextCall = (PsiCall) gParent;
final JavaResolveResult resolveResult = contextCall.resolveMethodGenerics();
final PsiElement resolve = resolveResult.getElement();
if (resolve instanceof PsiMethod) {
final PsiParameter[] parameters =
((PsiMethod) resolve).getParameterList().getParameters();
final int finalLambdaIdx = adjustLambdaIdx(lambdaIdx, (PsiMethod) resolve, parameters);
if (finalLambdaIdx < parameters.length) {
if (!tryToSubstitute) return getNormalizedType(parameters[finalLambdaIdx]);
if (cachedType != null && paramIdx > -1) {
final PsiMethod interfaceMethod = getFunctionalInterfaceMethod(cachedType);
if (interfaceMethod != null) {
final PsiClassType.ClassResolveResult cachedResult =
PsiUtil.resolveGenericsClassInType(cachedType);
final PsiType interfaceMethodParameterType =
interfaceMethod.getParameterList().getParameters()[paramIdx].getType();
if (!dependsOnTypeParams(
cachedResult.getSubstitutor().substitute(interfaceMethodParameterType),
cachedType,
expression)) {
return cachedType;
}
}
}
return PsiResolveHelper.ourGuard.doPreventingRecursion(
expression,
true,
new Computable<PsiType>() {
@Override
public PsiType compute() {
return resolveResult
.getSubstitutor()
.substitute(getNormalizedType(parameters[finalLambdaIdx]));
}
});
}
}
return null;
}
}
} else if (parent instanceof PsiReturnStatement) {
final PsiLambdaExpression gParent =
PsiTreeUtil.getParentOfType(parent, PsiLambdaExpression.class);
if (gParent != null) {
return getFunctionalInterfaceTypeByContainingLambda(gParent);
} else {
final PsiMethod method = PsiTreeUtil.getParentOfType(parent, PsiMethod.class);
if (method != null) {
return method.getReturnType();
}
}
} else if (parent instanceof PsiLambdaExpression) {
return getFunctionalInterfaceTypeByContainingLambda((PsiLambdaExpression) parent);
}
return null;
}