private static boolean isParameterUsedRecursively(
@NotNull PsiElement element, @NotNull List<PsiReference> array) {
if (!(element instanceof PsiParameter)) return false;
PsiParameter parameter = (PsiParameter) element;
PsiElement scope = parameter.getDeclarationScope();
if (!(scope instanceof PsiMethod)) return false;
PsiMethod method = (PsiMethod) scope;
int paramIndex = ArrayUtilRt.find(method.getParameterList().getParameters(), parameter);
for (PsiReference reference : array) {
if (!(reference instanceof PsiElement)) return false;
PsiElement argument = (PsiElement) reference;
PsiMethodCallExpression methodCallExpression =
(PsiMethodCallExpression)
new PsiMatcherImpl(argument)
.dot(PsiMatchers.hasClass(PsiReferenceExpression.class))
.parent(PsiMatchers.hasClass(PsiExpressionList.class))
.parent(PsiMatchers.hasClass(PsiMethodCallExpression.class))
.getElement();
if (methodCallExpression == null) return false;
PsiReferenceExpression methodExpression = methodCallExpression.getMethodExpression();
if (method != methodExpression.resolve()) return false;
PsiExpressionList argumentList = methodCallExpression.getArgumentList();
PsiExpression[] arguments = argumentList.getExpressions();
int argumentIndex = ArrayUtilRt.find(arguments, argument);
if (paramIndex != argumentIndex) return false;
}
return true;
}
private static void checkMagicParameterArgument(
@NotNull PsiParameter parameter,
PsiExpression argument,
@NotNull AllowedValues allowedValues,
@NotNull ProblemsHolder holder) {
final PsiManager manager = PsiManager.getInstance(holder.getProject());
if (!argument.getTextRange().isEmpty()
&& !isAllowed(parameter.getDeclarationScope(), argument, allowedValues, manager)) {
registerProblem(argument, allowedValues, holder);
}
}
private static PsiElement[] getParameterElementsToSearch(final PsiParameter parameter) {
final PsiMethod method = (PsiMethod) parameter.getDeclarationScope();
PsiMethod[] overrides =
OverridingMethodsSearch.search(method, true).toArray(PsiMethod.EMPTY_ARRAY);
for (int i = 0; i < overrides.length; i++) {
overrides[i] = (PsiMethod) overrides[i].getNavigationElement();
}
List<PsiElement> elementsToSearch = new ArrayList<PsiElement>(overrides.length + 1);
elementsToSearch.add(parameter);
int idx = method.getParameterList().getParameterIndex(parameter);
for (PsiMethod override : overrides) {
final PsiParameter[] parameters = override.getParameterList().getParameters();
if (idx < parameters.length) {
elementsToSearch.add(parameters[idx]);
}
}
return elementsToSearch.toArray(new PsiElement[elementsToSearch.size()]);
}
@Override
@NotNull
public PsiElement[] getPrimaryElements() {
final PsiElement element = getPsiElement();
if (element instanceof PsiParameter) {
final PsiParameter parameter = (PsiParameter) element;
final PsiElement scope = parameter.getDeclarationScope();
if (scope instanceof PsiMethod) {
final PsiMethod method = (PsiMethod) scope;
if (PsiUtil.canBeOverriden(method)) {
final PsiClass aClass = method.getContainingClass();
LOG.assertTrue(aClass != null); // Otherwise can not be overriden
boolean hasOverridden = OverridingMethodsSearch.search(method).findFirst() != null;
if (hasOverridden
&& askWhetherShouldSearchForParameterInOverridingMethods(element, parameter)) {
return getParameterElementsToSearch(parameter);
}
}
}
}
return myElementsToSearch.length == 0 ? new PsiElement[] {element} : myElementsToSearch;
}
private static AllowedValues parseBeanInfo(@NotNull PsiModifierListOwner owner) {
PsiMethod method = null;
if (owner instanceof PsiParameter) {
PsiParameter parameter = (PsiParameter) owner;
PsiElement scope = parameter.getDeclarationScope();
if (!(scope instanceof PsiMethod)) return null;
PsiElement nav = scope.getNavigationElement();
if (!(nav instanceof PsiMethod)) return null;
method = (PsiMethod) nav;
if (method.isConstructor()) {
// not a property, try the @ConstructorProperties({"prop"})
PsiAnnotation annotation =
AnnotationUtil.findAnnotation(method, "java.beans.ConstructorProperties");
if (annotation == null) return null;
PsiAnnotationMemberValue value = annotation.findAttributeValue("value");
if (!(value instanceof PsiArrayInitializerMemberValue)) return null;
PsiAnnotationMemberValue[] initializers =
((PsiArrayInitializerMemberValue) value).getInitializers();
PsiElement parent = parameter.getParent();
if (!(parent instanceof PsiParameterList)) return null;
int index = ((PsiParameterList) parent).getParameterIndex(parameter);
if (index >= initializers.length) return null;
PsiAnnotationMemberValue initializer = initializers[index];
if (!(initializer instanceof PsiLiteralExpression)) return null;
Object val = ((PsiLiteralExpression) initializer).getValue();
if (!(val instanceof String)) return null;
PsiMethod setter =
PropertyUtil.findPropertySetter(
method.getContainingClass(), (String) val, false, false);
if (setter == null) return null;
// try the @beaninfo of the corresponding setter
method = (PsiMethod) setter.getNavigationElement();
}
} else if (owner instanceof PsiMethod) {
PsiElement nav = owner.getNavigationElement();
if (!(nav instanceof PsiMethod)) return null;
method = (PsiMethod) nav;
}
if (method == null) return null;
PsiClass aClass = method.getContainingClass();
if (aClass == null) return null;
if (PropertyUtil.isSimplePropertyGetter(method)) {
List<PsiMethod> setters =
PropertyUtil.getSetters(aClass, PropertyUtil.getPropertyNameByGetter(method));
if (setters.size() != 1) return null;
method = setters.get(0);
}
if (!PropertyUtil.isSimplePropertySetter(method)) return null;
PsiDocComment doc = method.getDocComment();
if (doc == null) return null;
PsiDocTag beaninfo = doc.findTagByName("beaninfo");
if (beaninfo == null) return null;
String data =
StringUtil.join(
beaninfo.getDataElements(),
new Function<PsiElement, String>() {
@Override
public String fun(PsiElement element) {
return element.getText();
}
},
"\n");
int enumIndex = StringUtil.indexOfSubstringEnd(data, "enum:");
if (enumIndex == -1) return null;
data = data.substring(enumIndex);
int colon = data.indexOf(":");
int last = colon == -1 ? data.length() : data.substring(0, colon).lastIndexOf("\n");
data = data.substring(0, last);
List<PsiAnnotationMemberValue> values = new ArrayList<PsiAnnotationMemberValue>();
for (String line : StringUtil.splitByLines(data)) {
List<String> words = StringUtil.split(line, " ", true, true);
if (words.size() != 2) continue;
String ref = words.get(1);
PsiExpression constRef =
JavaPsiFacade.getElementFactory(aClass.getProject())
.createExpressionFromText(ref, aClass);
if (!(constRef instanceof PsiReferenceExpression)) continue;
PsiReferenceExpression expr = (PsiReferenceExpression) constRef;
values.add(expr);
}
if (values.isEmpty()) return null;
PsiAnnotationMemberValue[] array = values.toArray(new PsiAnnotationMemberValue[values.size()]);
return new AllowedValues(array, false);
}
private static void findParameterUsages(
final PsiParameter parameter, final List<UsageInfo> usages) {
final PsiMethod method = (PsiMethod) parameter.getDeclarationScope();
final int parameterIndex = method.getParameterList().getParameterIndex(parameter);
// search for refs to current method only, do not search for refs to overriding methods, they'll
// be searched separately
ReferencesSearch.search(method)
.forEach(
reference -> {
PsiElement element = reference.getElement();
if (element != null) {
final JavaSafeDeleteDelegate safeDeleteDelegate =
JavaSafeDeleteDelegate.EP.forLanguage(element.getLanguage());
if (safeDeleteDelegate != null) {
safeDeleteDelegate.createUsageInfoForParameter(
reference, usages, parameter, method);
}
if (!parameter.isVarArgs()
&& !RefactoringChangeUtil.isSuperMethodCall(element.getParent())) {
final PsiParameter paramInCaller =
SafeDeleteJavaCallerChooser.isTheOnlyOneParameterUsage(
element.getParent(), parameterIndex, method);
if (paramInCaller != null) {
final PsiMethod callerMethod = (PsiMethod) paramInCaller.getDeclarationScope();
if (ApplicationManager.getApplication().isUnitTestMode()) {
usages.add(
new SafeDeleteParameterCallHierarchyUsageInfo(
callerMethod, paramInCaller, callerMethod));
} else {
usages.add(
new SafeDeleteParameterCallHierarchyUsageInfo(
method, parameter, callerMethod));
}
}
}
}
return true;
});
ReferencesSearch.search(parameter)
.forEach(
reference -> {
PsiElement element = reference.getElement();
final PsiDocTag docTag = PsiTreeUtil.getParentOfType(element, PsiDocTag.class);
if (docTag != null) {
usages.add(new SafeDeleteReferenceJavaDeleteUsageInfo(docTag, parameter, true));
return true;
}
boolean isSafeDelete = false;
if (element.getParent().getParent() instanceof PsiMethodCallExpression) {
PsiMethodCallExpression call =
(PsiMethodCallExpression) element.getParent().getParent();
PsiReferenceExpression methodExpression = call.getMethodExpression();
if (methodExpression.getText().equals(PsiKeyword.SUPER)) {
isSafeDelete = true;
} else if (methodExpression.getQualifierExpression()
instanceof PsiSuperExpression) {
final PsiMethod superMethod = call.resolveMethod();
if (superMethod != null
&& MethodSignatureUtil.isSuperMethod(superMethod, method)) {
isSafeDelete = true;
}
}
}
usages.add(
new SafeDeleteReferenceJavaDeleteUsageInfo(element, parameter, isSafeDelete));
return true;
});
findFunctionalExpressions(usages, method);
}