@Nullable
public CommonProblemDescriptor[] checkElement(
final RefEntity refEntity,
final AnalysisScope scope,
final InspectionManager manager,
final GlobalInspectionContext globalContext,
final ProblemDescriptionsProcessor processor) {
if (refEntity instanceof RefMethod) {
final RefMethod refMethod = (RefMethod) refEntity;
if (refMethod.isSyntheticJSP()) return null;
if (refMethod.isExternalOverride()) return null;
if (!(refMethod.isStatic() || refMethod.isConstructor())
&& !refMethod.getSuperMethods().isEmpty()) return null;
if ((refMethod.isAbstract() || refMethod.getOwnerClass().isInterface())
&& refMethod.getDerivedMethods().isEmpty()) return null;
if (RefUtil.isEntryPoint(refMethod)) return null;
if (refMethod.isAppMain()) return null;
final ArrayList<RefParameter> unusedParameters = getUnusedParameters(refMethod);
if (unusedParameters.isEmpty()) return null;
final List<ProblemDescriptor> result = new ArrayList<ProblemDescriptor>();
for (RefParameter refParameter : unusedParameters) {
final PsiIdentifier psiIdentifier = refParameter.getElement().getNameIdentifier();
if (psiIdentifier != null) {
result.add(
manager.createProblemDescriptor(
psiIdentifier,
refMethod.isAbstract()
? InspectionsBundle.message("inspection.unused.parameter.composer")
: InspectionsBundle.message("inspection.unused.parameter.composer1"),
new AcceptSuggested(
globalContext.getRefManager(), processor, refParameter.toString()),
ProblemHighlightType.LIKE_UNUSED_SYMBOL,
false));
}
}
return result.toArray(new CommonProblemDescriptor[result.size()]);
}
return null;
}
public static ArrayList<RefParameter> getUnusedParameters(RefMethod refMethod) {
boolean checkDeep = !refMethod.isStatic() && !refMethod.isConstructor();
ArrayList<RefParameter> res = new ArrayList<RefParameter>();
RefParameter[] methodParameters = refMethod.getParameters();
RefParameter[] result = new RefParameter[methodParameters.length];
System.arraycopy(methodParameters, 0, result, 0, methodParameters.length);
clearUsedParameters(refMethod, result, checkDeep);
for (RefParameter parameter : result) {
if (parameter != null) {
res.add(parameter);
}
}
return res;
}