@Override
public void onInitialize(RefElement refElement) {
((RefElementImpl) refElement).setFlag(true, CAN_BE_FINAL_MASK);
if (refElement instanceof RefClass) {
final RefClass refClass = (RefClass) refElement;
final PsiClass psiClass = refClass.getElement();
if (refClass.isEntry()) {
((RefClassImpl) refClass).setFlag(false, CAN_BE_FINAL_MASK);
return;
}
if (refClass.isAbstract() || refClass.isAnonymous() || refClass.isInterface()) {
((RefClassImpl) refClass).setFlag(false, CAN_BE_FINAL_MASK);
return;
}
if (!refClass.isSelfInheritor(psiClass)) {
for (PsiClass psiSuperClass : psiClass.getSupers()) {
if (myManager.belongsToScope(psiSuperClass)) {
RefClass refSuperClass = (RefClass) myManager.getReference(psiSuperClass);
if (refSuperClass != null) {
((RefClassImpl) refSuperClass).setFlag(false, CAN_BE_FINAL_MASK);
}
}
}
}
} else if (refElement instanceof RefMethod) {
final RefMethod refMethod = (RefMethod) refElement;
final PsiElement element = refMethod.getElement();
if (element instanceof PsiMethod) {
PsiMethod psiMethod = (PsiMethod) element;
if (refMethod.isConstructor()
|| refMethod.isAbstract()
|| refMethod.isStatic()
|| PsiModifier.PRIVATE.equals(refMethod.getAccessModifier())
|| refMethod.getOwnerClass().isAnonymous()
|| refMethod.getOwnerClass().isInterface()) {
((RefMethodImpl) refMethod).setFlag(false, CAN_BE_FINAL_MASK);
}
if (PsiModifier.PRIVATE.equals(refMethod.getAccessModifier())
&& refMethod.getOwner() != null
&& !(refMethod.getOwnerClass().getOwner() instanceof RefElement)) {
((RefMethodImpl) refMethod).setFlag(false, CAN_BE_FINAL_MASK);
}
for (PsiMethod psiSuperMethod : psiMethod.findSuperMethods()) {
if (myManager.belongsToScope(psiSuperMethod)) {
RefMethod refSuperMethod = (RefMethod) myManager.getReference(psiSuperMethod);
if (refSuperMethod != null) {
((RefMethodImpl) refSuperMethod).setFlag(false, CAN_BE_FINAL_MASK);
}
}
}
}
}
}
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
if (!CodeInsightUtilBase.preparePsiElementForWrite(descriptor.getPsiElement())) return;
final PsiMethod psiMethod =
PsiTreeUtil.getParentOfType(descriptor.getPsiElement(), PsiMethod.class);
if (psiMethod != null) {
final ArrayList<PsiElement> psiParameters = new ArrayList<PsiElement>();
final RefElement refMethod = myManager != null ? myManager.getReference(psiMethod) : null;
if (refMethod != null) {
for (final RefParameter refParameter : getUnusedParameters((RefMethod) refMethod)) {
psiParameters.add(refParameter.getElement());
}
} else {
final PsiParameter[] parameters = psiMethod.getParameterList().getParameters();
for (PsiParameter parameter : parameters) {
if (Comparing.strEqual(parameter.getName(), myHint)) {
psiParameters.add(parameter);
break;
}
}
}
final PsiModificationTracker tracker = psiMethod.getManager().getModificationTracker();
final long startModificationCount = tracker.getModificationCount();
removeUnusedParameterViaChangeSignature(psiMethod, psiParameters);
if (refMethod != null && startModificationCount != tracker.getModificationCount()) {
myProcessor.ignoreElement(refMethod);
}
}
}
@Override
public void resolveEntryPoints(@NotNull final RefManager manager) {
if (!myResolved) {
myResolved = true;
cleanup();
validateEntryPoints();
ApplicationManager.getApplication()
.runReadAction(
() -> {
for (SmartRefElementPointer entryPoint : myPersistentEntryPoints.values()) {
if (entryPoint.resolve(manager)) {
RefEntity refElement = entryPoint.getRefElement();
((RefElementImpl) refElement).setEntry(true);
((RefElementImpl) refElement).setPermanentEntry(entryPoint.isPersistent());
}
}
for (ClassPattern pattern : myPatterns) {
final RefEntity refClass =
manager.getReference(RefJavaManager.CLASS, pattern.pattern);
if (refClass != null) {
for (RefMethod constructor : ((RefClass) refClass).getConstructors()) {
((RefMethodImpl) constructor).setEntry(true);
((RefMethodImpl) constructor).setPermanentEntry(true);
}
}
}
});
}
}
protected boolean queryExternalUsagesRequests(
final RefManager manager,
final GlobalJavaInspectionContext globalContext,
final ProblemDescriptionsProcessor processor) {
manager.iterate(
new RefJavaVisitor() {
@Override
public void visitElement(RefEntity refEntity) {
if (refEntity instanceof RefElement && processor.getDescriptions(refEntity) != null) {
refEntity.accept(
new RefJavaVisitor() {
@Override
public void visitMethod(final RefMethod refMethod) {
globalContext.enqueueMethodUsagesProcessor(
refMethod,
new GlobalJavaInspectionContext.UsagesProcessor() {
public boolean process(PsiReference psiReference) {
processor.ignoreElement(refMethod);
return false;
}
});
}
});
}
}
});
return false;
}
@Override
protected boolean queryExternalUsagesRequests(
@NotNull final RefManager manager,
@NotNull final GlobalJavaInspectionContext context,
@NotNull final ProblemDescriptionsProcessor descriptionsProcessor) {
manager.iterate(
new RefJavaVisitor() {
@Override
public void visitMethod(@NotNull final RefMethod refMethod) {
if (descriptionsProcessor.getDescriptions(refMethod)
!= null) { // suspicious method -> need to check external usages
final GlobalJavaInspectionContext.UsagesProcessor usagesProcessor =
new GlobalJavaInspectionContext.UsagesProcessor() {
@Override
public boolean process(PsiReference psiReference) {
final PsiElement psiReferenceExpression = psiReference.getElement();
if (psiReferenceExpression instanceof PsiReferenceExpression
&& !isInvertedMethodCall(
(PsiReferenceExpression) psiReferenceExpression)) {
descriptionsProcessor.ignoreElement(refMethod);
}
return false;
}
};
traverseSuperMethods(refMethod, context, usagesProcessor);
}
}
});
return false;
}
@Override
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
final PsiElement element = descriptor.getPsiElement();
final PsiModifierListOwner psiElement =
PsiTreeUtil.getParentOfType(element, PsiModifierListOwner.class);
if (psiElement != null) {
RefJavaElement refElement =
(RefJavaElement) (myManager != null ? myManager.getReference(psiElement) : null);
try {
if (psiElement instanceof PsiVariable) {
((PsiVariable) psiElement).normalizeDeclaration();
}
final PsiModifierList modifierList = psiElement.getModifierList();
LOG.assertTrue(modifierList != null);
modifierList.setModifierProperty(PsiModifier.FINAL, true);
modifierList.setModifierProperty(PsiModifier.VOLATILE, false);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
if (refElement != null) {
RefJavaUtil.getInstance().setIsFinal(refElement, true);
}
}
}
@Override
public void addTypeReference(PsiElement psiElement, PsiType psiType, RefManager refManager) {
RefClass ownerClass = getOwnerClass(refManager, psiElement);
if (ownerClass != null) {
psiType = psiType.getDeepComponentType();
if (psiType instanceof PsiClassType) {
PsiClass psiClass = PsiUtil.resolveClassInType(psiType);
if (psiClass != null && refManager.belongsToScope(psiClass)) {
RefClassImpl refClass = (RefClassImpl) refManager.getReference(psiClass);
if (refClass != null) {
refClass.addTypeReference(ownerClass);
}
}
}
}
}
@Override
@Nullable
public RefClass getOwnerClass(RefManager refManager, PsiElement psiElement) {
while (psiElement != null && !(psiElement instanceof PsiClass)) {
psiElement = psiElement.getParent();
}
return psiElement != null ? (RefClass) refManager.getReference(psiElement) : null;
}
@Override
public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
if (!FileModificationService.getInstance()
.preparePsiElementForWrite(descriptor.getPsiElement())) return;
final PsiModifierListOwner element =
PsiTreeUtil.getParentOfType(descriptor.getPsiElement(), PsiModifierListOwner.class);
if (element != null) {
RefElement refElement = null;
if (myManager != null) {
refElement = myManager.getReference(element);
}
try {
if (element instanceof PsiVariable) {
((PsiVariable) element).normalizeDeclaration();
}
PsiModifierList list = element.getModifierList();
LOG.assertTrue(list != null);
if (element instanceof PsiMethod) {
PsiMethod psiMethod = (PsiMethod) element;
PsiClass containingClass = psiMethod.getContainingClass();
if (containingClass != null
&& containingClass.getParent() instanceof PsiFile
&& myHint == PsiModifier.PRIVATE
&& list.hasModifierProperty(PsiModifier.FINAL)) {
list.setModifierProperty(PsiModifier.FINAL, false);
}
}
list.setModifierProperty(myHint, true);
if (refElement instanceof RefJavaElement) {
RefJavaUtil.getInstance().setAccessModifier((RefJavaElement) refElement, myHint);
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
}
@Nullable
public static RefClass classFromExternalName(RefManager manager, String externalName) {
return (RefClass)
manager.getReference(
ClassUtil.findPsiClass(PsiManager.getInstance(manager.getProject()), externalName));
}
protected boolean queryExternalUsagesRequests(
final RefManager manager,
final GlobalJavaInspectionContext globalContext,
final ProblemDescriptionsProcessor processor) {
final Project project = manager.getProject();
for (RefElement entryPoint : globalContext.getEntryPointsManager(manager).getEntryPoints()) {
processor.ignoreElement(entryPoint);
}
final PsiSearchHelper helper = PsiSearchHelper.SERVICE.getInstance(project);
final AnalysisScope scope = manager.getScope();
manager.iterate(
new RefJavaVisitor() {
@Override
public void visitElement(RefEntity refEntity) {
if (refEntity instanceof RefMethod) {
RefMethod refMethod = (RefMethod) refEntity;
final PsiModifierListOwner element = refMethod.getElement();
if (element instanceof PsiMethod) { // implicit construcors are invisible
PsiMethod psiMethod = (PsiMethod) element;
if (!refMethod.isStatic()
&& !refMethod.isConstructor()
&& !PsiModifier.PRIVATE.equals(refMethod.getAccessModifier())) {
final ArrayList<RefParameter> unusedParameters = getUnusedParameters(refMethod);
if (unusedParameters.isEmpty()) return;
PsiMethod[] derived =
OverridingMethodsSearch.search(psiMethod, true)
.toArray(PsiMethod.EMPTY_ARRAY);
for (final RefParameter refParameter : unusedParameters) {
if (refMethod.isAbstract() && derived.length == 0) {
refParameter.parameterReferenced(false);
processor.ignoreElement(refParameter);
} else {
int idx = refParameter.getIndex();
final boolean[] found = {false};
for (int i = 0; i < derived.length && !found[0]; i++) {
if (!scope.contains(derived[i])) {
final PsiParameter[] parameters =
derived[i].getParameterList().getParameters();
if (parameters.length >= idx) continue;
PsiParameter psiParameter = parameters[idx];
ReferencesSearch.search(
psiParameter, helper.getUseScope(psiParameter), false)
.forEach(
new PsiReferenceProcessorAdapter(
new PsiReferenceProcessor() {
public boolean execute(PsiReference element) {
refParameter.parameterReferenced(false);
processor.ignoreElement(refParameter);
found[0] = true;
return false;
}
}));
}
}
}
}
}
}
}
}
});
return false;
}
@Nullable
public static RefMethod methodFromExternalName(RefManager manager, String externalName) {
return (RefMethod)
manager.getReference(
findPsiMethod(PsiManager.getInstance(manager.getProject()), externalName));
}
@Override
public void initialize(RefManager refManager) {
CAN_BE_FINAL_MASK = refManager.getLastUsedMask();
}
@Override
public void onReferencesBuild(RefElement refElement) {
if (refElement instanceof RefClass) {
final PsiClass psiClass = (PsiClass) refElement.getElement();
if (psiClass != null) {
if (refElement.isEntry()) {
((RefClassImpl) refElement).setFlag(false, CAN_BE_FINAL_MASK);
}
PsiMethod[] psiMethods = psiClass.getMethods();
PsiField[] psiFields = psiClass.getFields();
HashSet<PsiVariable> allFields = new HashSet<PsiVariable>();
ContainerUtil.addAll(allFields, psiFields);
ArrayList<PsiVariable> instanceInitializerInitializedFields = new ArrayList<PsiVariable>();
boolean hasInitializers = false;
for (PsiClassInitializer initializer : psiClass.getInitializers()) {
PsiCodeBlock body = initializer.getBody();
hasInitializers = true;
ControlFlow flow;
try {
flow =
ControlFlowFactory.getInstance(body.getProject())
.getControlFlow(
body, LocalsOrMyInstanceFieldsControlFlowPolicy.getInstance(), false);
} catch (AnalysisCanceledException e) {
flow = ControlFlow.EMPTY;
}
Collection<PsiVariable> writtenVariables = new ArrayList<PsiVariable>();
ControlFlowUtil.getWrittenVariables(flow, 0, flow.getSize(), false, writtenVariables);
for (PsiVariable psiVariable : writtenVariables) {
if (allFields.contains(psiVariable)) {
if (instanceInitializerInitializedFields.contains(psiVariable)) {
allFields.remove(psiVariable);
instanceInitializerInitializedFields.remove(psiVariable);
} else {
instanceInitializerInitializedFields.add(psiVariable);
}
}
}
for (PsiVariable psiVariable : writtenVariables) {
if (!instanceInitializerInitializedFields.contains(psiVariable)) {
allFields.remove(psiVariable);
}
}
}
for (PsiMethod psiMethod : psiMethods) {
if (psiMethod.isConstructor()) {
PsiCodeBlock body = psiMethod.getBody();
if (body != null) {
hasInitializers = true;
ControlFlow flow;
try {
flow =
ControlFlowFactory.getInstance(body.getProject())
.getControlFlow(
body, LocalsOrMyInstanceFieldsControlFlowPolicy.getInstance(), false);
} catch (AnalysisCanceledException e) {
flow = ControlFlow.EMPTY;
}
Collection<PsiVariable> writtenVariables =
ControlFlowUtil.getWrittenVariables(flow, 0, flow.getSize(), false);
for (PsiVariable psiVariable : writtenVariables) {
if (instanceInitializerInitializedFields.contains(psiVariable)) {
allFields.remove(psiVariable);
instanceInitializerInitializedFields.remove(psiVariable);
}
}
List<PsiMethod> redirectedConstructors =
HighlightControlFlowUtil.getChainedConstructors(psiMethod);
if (redirectedConstructors == null || redirectedConstructors.isEmpty()) {
List<PsiVariable> ssaVariables = ControlFlowUtil.getSSAVariables(flow);
ArrayList<PsiVariable> good = new ArrayList<PsiVariable>(ssaVariables);
good.addAll(instanceInitializerInitializedFields);
allFields.retainAll(good);
} else {
allFields.removeAll(writtenVariables);
}
}
}
}
for (PsiField psiField : psiFields) {
if ((!hasInitializers || !allFields.contains(psiField))
&& psiField.getInitializer() == null) {
final RefFieldImpl refField = (RefFieldImpl) myManager.getReference(psiField);
if (refField != null) {
refField.setFlag(false, CAN_BE_FINAL_MASK);
}
}
}
}
} else if (refElement instanceof RefMethod) {
final RefMethod refMethod = (RefMethod) refElement;
if (refMethod.isEntry()) {
((RefMethodImpl) refMethod).setFlag(false, CAN_BE_FINAL_MASK);
}
}
}
@Override
protected boolean queryExternalUsagesRequests(
@NotNull final RefManager manager,
@NotNull final GlobalJavaInspectionContext globalContext,
@NotNull final ProblemDescriptionsProcessor problemsProcessor) {
for (RefElement entryPoint : globalContext.getEntryPointsManager(manager).getEntryPoints()) {
problemsProcessor.ignoreElement(entryPoint);
}
manager.iterate(
new RefJavaVisitor() {
@Override
public void visitElement(@NotNull RefEntity refEntity) {
if (problemsProcessor.getDescriptions(refEntity) == null) return;
refEntity.accept(
new RefJavaVisitor() {
@Override
public void visitMethod(@NotNull final RefMethod refMethod) {
if (!refMethod.isStatic()
&& !PsiModifier.PRIVATE.equals(refMethod.getAccessModifier())
&& !(refMethod instanceof RefImplicitConstructor)) {
globalContext.enqueueDerivedMethodsProcessor(
refMethod,
new GlobalJavaInspectionContext.DerivedMethodsProcessor() {
@Override
public boolean process(PsiMethod derivedMethod) {
((RefElementImpl) refMethod)
.setFlag(false, CanBeFinalAnnotator.CAN_BE_FINAL_MASK);
problemsProcessor.ignoreElement(refMethod);
return false;
}
});
}
}
@Override
public void visitClass(@NotNull final RefClass refClass) {
if (!refClass.isAnonymous()) {
globalContext.enqueueDerivedClassesProcessor(
refClass,
new GlobalJavaInspectionContext.DerivedClassesProcessor() {
@Override
public boolean process(PsiClass inheritor) {
((RefClassImpl) refClass)
.setFlag(false, CanBeFinalAnnotator.CAN_BE_FINAL_MASK);
problemsProcessor.ignoreElement(refClass);
return false;
}
});
}
}
@Override
public void visitField(@NotNull final RefField refField) {
globalContext.enqueueFieldUsagesProcessor(
refField,
new GlobalJavaInspectionContext.UsagesProcessor() {
@Override
public boolean process(PsiReference psiReference) {
PsiElement expression = psiReference.getElement();
if (expression instanceof PsiReferenceExpression
&& PsiUtil.isAccessedForWriting((PsiExpression) expression)) {
((RefFieldImpl) refField)
.setFlag(false, CanBeFinalAnnotator.CAN_BE_FINAL_MASK);
problemsProcessor.ignoreElement(refField);
return false;
}
return true;
}
});
}
});
}
});
return false;
}
@Override
protected boolean queryExternalUsagesRequests(
@NotNull final RefManager manager,
@NotNull final GlobalJavaInspectionContext globalContext,
@NotNull final ProblemDescriptionsProcessor processor) {
final EntryPointsManager entryPointsManager = globalContext.getEntryPointsManager(manager);
for (RefElement entryPoint : entryPointsManager.getEntryPoints()) {
ignoreElement(processor, entryPoint);
}
ExtensionPoint<VisibilityExtension> point =
Extensions.getRootArea().getExtensionPoint(ExtensionPoints.VISIBLITY_TOOL);
for (VisibilityExtension addin : point.getExtensions()) {
addin.fillIgnoreList(manager, processor);
}
manager.iterate(
new RefJavaVisitor() {
@Override
public void visitElement(@NotNull final RefEntity refEntity) {
if (!(refEntity instanceof RefElement)) return;
if (processor.getDescriptions(refEntity) == null) return;
refEntity.accept(
new RefJavaVisitor() {
@Override
public void visitField(@NotNull final RefField refField) {
if (refField.getAccessModifier() != PsiModifier.PRIVATE) {
globalContext.enqueueFieldUsagesProcessor(
refField,
new GlobalJavaInspectionContext.UsagesProcessor() {
@Override
public boolean process(PsiReference psiReference) {
ignoreElement(processor, refField);
return false;
}
});
}
}
@Override
public void visitMethod(@NotNull final RefMethod refMethod) {
if (!refMethod.isExternalOverride()
&& refMethod.getAccessModifier() != PsiModifier.PRIVATE
&& !(refMethod instanceof RefImplicitConstructor)) {
globalContext.enqueueDerivedMethodsProcessor(
refMethod,
new GlobalJavaInspectionContext.DerivedMethodsProcessor() {
@Override
public boolean process(PsiMethod derivedMethod) {
ignoreElement(processor, refMethod);
return false;
}
});
globalContext.enqueueMethodUsagesProcessor(
refMethod,
new GlobalJavaInspectionContext.UsagesProcessor() {
@Override
public boolean process(PsiReference psiReference) {
ignoreElement(processor, refMethod);
return false;
}
});
if (entryPointsManager.isAddNonJavaEntries()) {
final RefClass ownerClass = refMethod.getOwnerClass();
if (refMethod.isConstructor()
&& ownerClass.getDefaultConstructor() != null) {
String qualifiedName = ownerClass.getElement().getQualifiedName();
if (qualifiedName != null) {
final Project project = manager.getProject();
PsiSearchHelper.SERVICE
.getInstance(project)
.processUsagesInNonJavaFiles(
qualifiedName,
new PsiNonJavaFileReferenceProcessor() {
@Override
public boolean process(
PsiFile file, int startOffset, int endOffset) {
entryPointsManager.addEntryPoint(refMethod, false);
ignoreElement(processor, refMethod);
return false;
}
},
GlobalSearchScope.projectScope(project));
}
}
}
}
}
@Override
public void visitClass(@NotNull final RefClass refClass) {
if (!refClass.isAnonymous()) {
globalContext.enqueueDerivedClassesProcessor(
refClass,
new GlobalJavaInspectionContext.DerivedClassesProcessor() {
@Override
public boolean process(PsiClass inheritor) {
ignoreElement(processor, refClass);
return false;
}
});
globalContext.enqueueClassUsagesProcessor(
refClass,
new GlobalJavaInspectionContext.UsagesProcessor() {
@Override
public boolean process(PsiReference psiReference) {
ignoreElement(processor, refClass);
return false;
}
});
}
}
});
}
});
return false;
}