public static MultiMap<PsiElement, UsageInfo> classifyUsages(
Collection<? extends PsiElement> elements, UsageInfo[] usages) {
final MultiMap<PsiElement, UsageInfo> result = new MultiMap<PsiElement, UsageInfo>();
for (UsageInfo usage : usages) {
LOG.assertTrue(usage instanceof MoveRenameUsageInfo);
if (usage.getReference() instanceof LightElement) {
continue; // filter out implicit references (e.g. from derived class to super class' default
// constructor)
}
MoveRenameUsageInfo usageInfo = (MoveRenameUsageInfo) usage;
if (usage instanceof RelatedUsageInfo) {
final PsiElement relatedElement = ((RelatedUsageInfo) usage).getRelatedElement();
if (elements.contains(relatedElement)) {
result.putValue(relatedElement, usage);
}
} else {
PsiElement referenced = usageInfo.getReferencedElement();
if (elements.contains(referenced)) {
result.putValue(referenced, usage);
} else if (referenced != null) {
PsiElement indirect = referenced.getNavigationElement();
if (elements.contains(indirect)) {
result.putValue(indirect, usage);
}
}
}
}
return result;
}
@NotNull
private static Nullness checkNullness(final PsiElement element) {
// null
PsiElement value = element;
if (value instanceof PsiExpression) {
value = PsiUtil.deparenthesizeExpression((PsiExpression) value);
}
if (value instanceof PsiLiteralExpression) {
return ((PsiLiteralExpression) value).getValue() == null
? Nullness.NULLABLE
: Nullness.NOT_NULL;
}
// not null
if (value instanceof PsiNewExpression) return Nullness.NOT_NULL;
if (value instanceof PsiThisExpression) return Nullness.NOT_NULL;
if (value instanceof PsiMethodCallExpression) {
PsiMethod method = ((PsiMethodCallExpression) value).resolveMethod();
if (method != null && NullableNotNullManager.isNotNull(method)) return Nullness.NOT_NULL;
if (method != null && NullableNotNullManager.isNullable(method)) return Nullness.NULLABLE;
}
if (value instanceof PsiPolyadicExpression
&& ((PsiPolyadicExpression) value).getOperationTokenType() == JavaTokenType.PLUS) {
return Nullness.NOT_NULL; // "xxx" + var
}
// unfortunately have to resolve here, since there can be no subnodes
PsiElement context = value;
if (value instanceof PsiReference) {
PsiElement resolved = ((PsiReference) value).resolve();
if (resolved instanceof PsiCompiledElement) {
resolved = resolved.getNavigationElement();
}
value = resolved;
}
if (value instanceof PsiParameter
&& ((PsiParameter) value).getDeclarationScope() instanceof PsiCatchSection) {
// exception thrown is always not null
return Nullness.NOT_NULL;
}
if (value instanceof PsiLocalVariable || value instanceof PsiParameter) {
Nullness result = DfaUtil.checkNullness((PsiVariable) value, context);
if (result != Nullness.UNKNOWN) {
return result;
}
}
if (value instanceof PsiModifierListOwner) {
if (NullableNotNullManager.isNotNull((PsiModifierListOwner) value)) return Nullness.NOT_NULL;
if (NullableNotNullManager.isNullable((PsiModifierListOwner) value)) return Nullness.NULLABLE;
}
if (value instanceof PsiEnumConstant) return Nullness.NOT_NULL;
return Nullness.UNKNOWN;
}
@Nullable
private static Map<PsiFile, PsiClass[]> convertToTopLevelClasses(
final PsiElement[] elements,
final boolean fromUpdate,
String relativePath,
Map<PsiFile, String> relativeMap) {
final Map<PsiFile, PsiClass[]> result = new HashMap<PsiFile, PsiClass[]>();
for (PsiElement element : elements) {
final PsiElement navigationElement = element.getNavigationElement();
LOG.assertTrue(navigationElement != null, element);
final PsiFile containingFile = navigationElement.getContainingFile();
if (!(containingFile instanceof PsiClassOwner
&& ProjectRootsUtil.isOutsideSourceRoot(containingFile))) {
PsiClass[] topLevelClasses = getTopLevelClasses(element);
if (topLevelClasses == null) {
if (element instanceof PsiDirectory) {
if (!fromUpdate) {
final String name = ((PsiDirectory) element).getName();
final String path =
relativePath != null
? (relativePath.length() > 0 ? (relativePath + "/") : "") + name
: null;
final Map<PsiFile, PsiClass[]> map =
convertToTopLevelClasses(element.getChildren(), fromUpdate, path, relativeMap);
if (map == null) return null;
for (Map.Entry<PsiFile, PsiClass[]> entry : map.entrySet()) {
fillResultsMap(result, entry.getKey(), entry.getValue());
}
}
continue;
}
if (!(element instanceof PsiFileSystemItem)) return null;
}
fillResultsMap(result, containingFile, topLevelClasses);
if (relativeMap != null) {
relativeMap.put(containingFile, relativePath);
}
}
}
if (result.isEmpty()) {
return null;
} else {
boolean hasClasses = false;
for (PsiClass[] classes : result.values()) {
if (classes != null) {
hasClasses = true;
break;
}
}
return hasClasses ? result : null;
}
}
public void registerReference(
@NotNull PsiJavaReference ref, @NotNull JavaResolveResult resolveResult) {
PsiElement refElement = resolveResult.getElement();
PsiFile psiFile = refElement == null ? null : refElement.getContainingFile();
if (psiFile != null)
psiFile =
(PsiFile)
psiFile
.getNavigationElement(); // look at navigation elements because all references
// resolve into Cls elements when highlighting library
// source
if (refElement != null
&& psiFile != null
&& myFile.getViewProvider().equals(psiFile.getViewProvider())) {
registerLocalRef(ref, refElement.getNavigationElement());
}
PsiElement resolveScope = resolveResult.getCurrentFileResolveScope();
if (resolveScope instanceof PsiImportStatementBase) {
registerImportStatement(ref, (PsiImportStatementBase) resolveScope);
}
}
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);
}