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);
}
}
}
private static void ignoreElement(
@NotNull ProblemDescriptionsProcessor processor, @NotNull RefEntity refElement) {
processor.ignoreElement(refElement);
if (refElement instanceof RefClass) {
RefClass refClass = (RefClass) refElement;
RefMethod defaultConstructor = refClass.getDefaultConstructor();
if (defaultConstructor != null) {
processor.ignoreElement(defaultConstructor);
return;
}
}
RefEntity owner = refElement.getOwner();
if (owner instanceof RefElement) {
processor.ignoreElement(owner);
}
}
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;
}
@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;
}