@Override
public void visitReferenceElement(PsiJavaCodeReferenceElement reference) {
super.visitReferenceElement(reference);
if (referenceFound) {
return;
}
final String text = reference.getText();
if (text.indexOf((int) '.') >= 0 || !name.equals(text)) {
return;
}
final PsiElement element = reference.resolve();
if (!(element instanceof PsiClass) || element instanceof PsiTypeParameter) {
return;
}
final PsiClass aClass = (PsiClass) element;
final String testClassName = aClass.getName();
final String testClassQualifiedName = aClass.getQualifiedName();
if (testClassQualifiedName == null
|| testClassName == null
|| testClassQualifiedName.equals(fullyQualifiedName)
|| !testClassName.equals(name)) {
return;
}
referenceFound = true;
}
/**
* The parameter <code>allowIndirect</code> determines if the method should look for indirect
* annotations, i.e. annotations which have themselves been annotated by the supplied annotation
* name. Currently, this only allows one level of indirection and returns an array of
* [base-annotation, indirect annotation]
*
* <p>The <code>annotationName</code> parameter is a pair of the target annotation class' fully
* qualified name as a String and as a Set. This is done for performance reasons because the Set
* is required by the {@link com.intellij.codeInsight.AnnotationUtil} utility class and allows to
* avoid unnecessary object constructions.
*/
public static PsiAnnotation[] getAnnotationsFromImpl(
PsiModifierListOwner owner,
Pair<String, ? extends Set<String>> annotationName,
boolean allowIndirect,
boolean inHierarchy) {
final PsiAnnotation directAnnotation =
inHierarchy
? AnnotationUtil.findAnnotationInHierarchy(owner, annotationName.second)
: AnnotationUtil.findAnnotation(owner, annotationName.second);
if (directAnnotation != null) {
return new PsiAnnotation[] {directAnnotation};
}
if (allowIndirect) {
final PsiAnnotation[] annotations = getAnnotations(owner, inHierarchy);
for (PsiAnnotation annotation : annotations) {
PsiJavaCodeReferenceElement nameReference = annotation.getNameReferenceElement();
if (nameReference == null) continue;
PsiElement resolved = nameReference.resolve();
if (resolved instanceof PsiClass) {
final PsiAnnotation psiAnnotation =
AnnotationUtil.findAnnotationInHierarchy(
(PsiModifierListOwner) resolved, annotationName.second);
if (psiAnnotation != null) {
return new PsiAnnotation[] {psiAnnotation, annotation};
}
}
}
}
return PsiAnnotation.EMPTY_ARRAY;
}
public static String checkTypeArguments(PsiTypeElement qualifier, PsiType psiType) {
if (psiType instanceof PsiClassType) {
final PsiJavaCodeReferenceElement referenceElement =
qualifier.getInnermostComponentReferenceElement();
if (referenceElement != null) {
PsiType[] typeParameters = referenceElement.getTypeParameters();
for (PsiType typeParameter : typeParameters) {
if (typeParameter instanceof PsiWildcardType) {
return "Unexpected wildcard";
}
}
}
}
return null;
}
@Override
public void removeRedundantImports(@NotNull final PsiJavaFile file)
throws IncorrectOperationException {
final Collection<PsiImportStatementBase> redundant = findRedundantImports(file);
if (redundant == null) return;
for (final PsiImportStatementBase importStatement : redundant) {
final PsiJavaCodeReferenceElement ref = importStatement.getImportReference();
// Do not remove non-resolving refs
if (ref == null || ref.resolve() == null) {
continue;
}
importStatement.delete();
}
}
@Override
public void visitReferenceElement(PsiJavaCodeReferenceElement reference) {
if (referenceFound) {
return;
}
super.visitReferenceElement(reference);
if (reference.isQualified()) {
return;
}
final PsiElement target = reference.resolve();
for (PsiMember member : members) {
if (member.equals(target)) {
referenceFound = true;
return;
}
}
}
/**
* @param strict if strict is true this method checks if the conflicting class which is imported
* is actually used in the file. If it isn't the on demand import can be overridden with an
* exact import for the fqName without breaking stuff.
*/
private static boolean hasOnDemandImportConflict(
@NotNull String fqName, @NotNull PsiJavaFile file, boolean strict) {
final PsiImportList imports = file.getImportList();
if (imports == null) {
return false;
}
final PsiImportStatement[] importStatements = imports.getImportStatements();
final String shortName = ClassUtil.extractClassName(fqName);
final String packageName = ClassUtil.extractPackageName(fqName);
for (final PsiImportStatement importStatement : importStatements) {
if (!importStatement.isOnDemand()) {
continue;
}
final PsiJavaCodeReferenceElement importReference = importStatement.getImportReference();
if (importReference == null) {
continue;
}
final String packageText = importReference.getText();
if (packageText.equals(packageName)) {
continue;
}
final PsiElement element = importReference.resolve();
if (element == null || !(element instanceof PsiPackage)) {
continue;
}
final PsiPackage aPackage = (PsiPackage) element;
final PsiClass[] classes = aPackage.getClasses();
for (final PsiClass aClass : classes) {
final String className = aClass.getName();
if (!shortName.equals(className)) {
continue;
}
if (!strict) {
return true;
}
final String qualifiedClassName = aClass.getQualifiedName();
if (qualifiedClassName == null || fqName.equals(qualifiedClassName)) {
continue;
}
return containsReferenceToConflictingClass(file, qualifiedClassName);
}
}
return hasJavaLangImportConflict(fqName, file);
}
@Nullable
private static PsiImportStaticStatement findOnDemandImportStaticStatement(
PsiImportList importList, String qualifierClass) {
final PsiImportStaticStatement[] importStaticStatements =
importList.getImportStaticStatements();
for (PsiImportStaticStatement importStaticStatement : importStaticStatements) {
if (!importStaticStatement.isOnDemand()) {
continue;
}
final PsiJavaCodeReferenceElement importReference =
importStaticStatement.getImportReference();
if (importReference == null) {
continue;
}
final String text = importReference.getText();
if (qualifierClass.equals(text)) {
return importStaticStatement;
}
}
return null;
}
private static boolean hasExactImportStaticConflict(
String qualifierClass, String memberName, PsiElement context) {
final PsiFile file = context.getContainingFile();
if (!(file instanceof PsiJavaFile)) {
return false;
}
final PsiJavaFile javaFile = (PsiJavaFile) file;
final PsiImportList importList = javaFile.getImportList();
if (importList == null) {
return false;
}
final PsiImportStaticStatement[] importStaticStatements =
importList.getImportStaticStatements();
for (PsiImportStaticStatement importStaticStatement : importStaticStatements) {
if (importStaticStatement.isOnDemand()) {
continue;
}
final String name = importStaticStatement.getReferenceName();
if (!memberName.equals(name)) {
continue;
}
final PsiJavaCodeReferenceElement importReference =
importStaticStatement.getImportReference();
if (importReference == null) {
continue;
}
final PsiElement qualifier = importReference.getQualifier();
if (qualifier == null) {
continue;
}
final String qualifierText = qualifier.getText();
if (!qualifierClass.equals(qualifierText)) {
return true;
}
}
return false;
}
static AllowedValues getAllowedValues(
@NotNull PsiModifierListOwner element, PsiType type, Set<PsiClass> visited) {
PsiAnnotation[] annotations = AnnotationUtil.getAllAnnotations(element, true, null);
for (PsiAnnotation annotation : annotations) {
AllowedValues values;
if (type != null && MagicConstant.class.getName().equals(annotation.getQualifiedName())) {
// PsiAnnotation magic = AnnotationUtil.findAnnotationInHierarchy(element,
// Collections.singleton(MagicConstant.class.getName()));
values = getAllowedValuesFromMagic(element, type, annotation);
if (values != null) return values;
}
PsiJavaCodeReferenceElement ref = annotation.getNameReferenceElement();
PsiElement resolved = ref == null ? null : ref.resolve();
if (!(resolved instanceof PsiClass) || !((PsiClass) resolved).isAnnotationType()) continue;
PsiClass aClass = (PsiClass) resolved;
if (visited == null) visited = new THashSet<PsiClass>();
if (!visited.add(aClass)) continue;
values = getAllowedValues(aClass, type, visited);
if (values != null) return values;
}
return parseBeanInfo(element);
}
public static int insertClassReference(
PsiClass psiClass, PsiFile file, int startOffset, int endOffset) {
final Project project = file.getProject();
PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project);
documentManager.commitAllDocuments();
final PsiManager manager = file.getManager();
final Document document =
FileDocumentManager.getInstance().getDocument(file.getViewProvider().getVirtualFile());
final PsiReference reference = file.findReferenceAt(startOffset);
if (reference != null) {
final PsiElement resolved = reference.resolve();
if (resolved instanceof PsiClass) {
if (((PsiClass) resolved).getQualifiedName() == null
|| manager.areElementsEquivalent(psiClass, resolved)) {
return endOffset;
}
}
}
String name = psiClass.getName();
if (name == null) {
return endOffset;
}
assert document != null;
document.replaceString(startOffset, endOffset, name);
int newEndOffset = startOffset + name.length();
final RangeMarker toDelete = insertTemporary(newEndOffset, document, " ");
documentManager.commitAllDocuments();
PsiElement element = file.findElementAt(startOffset);
if (element instanceof PsiIdentifier) {
PsiElement parent = element.getParent();
if (parent instanceof PsiJavaCodeReferenceElement
&& !((PsiJavaCodeReferenceElement) parent).isQualified()
&& !(parent.getParent() instanceof PsiPackageStatement)) {
PsiJavaCodeReferenceElement ref = (PsiJavaCodeReferenceElement) parent;
if (psiClass.isValid()
&& !psiClass.getManager().areElementsEquivalent(psiClass, resolveReference(ref))) {
final boolean staticImport = ref instanceof PsiImportStaticReferenceElement;
PsiElement newElement;
try {
newElement =
staticImport
? ((PsiImportStaticReferenceElement) ref).bindToTargetClass(psiClass)
: ref.bindToElement(psiClass);
} catch (IncorrectOperationException e) {
return endOffset; // can happen if fqn contains reserved words, for example
}
final RangeMarker rangeMarker = document.createRangeMarker(newElement.getTextRange());
documentManager.doPostponedOperationsAndUnblockDocument(document);
documentManager.commitDocument(document);
newElement =
CodeInsightUtilCore.findElementInRange(
file,
rangeMarker.getStartOffset(),
rangeMarker.getEndOffset(),
PsiJavaCodeReferenceElement.class,
JavaLanguage.INSTANCE);
rangeMarker.dispose();
if (newElement != null) {
newEndOffset = newElement.getTextRange().getEndOffset();
if (!(newElement instanceof PsiReferenceExpression)) {
PsiReferenceParameterList parameterList =
((PsiJavaCodeReferenceElement) newElement).getParameterList();
if (parameterList != null) {
newEndOffset = parameterList.getTextRange().getStartOffset();
}
}
if (!staticImport
&& !psiClass
.getManager()
.areElementsEquivalent(psiClass, resolveReference((PsiReference) newElement))
&& !PsiUtil.isInnerClass(psiClass)) {
final String qName = psiClass.getQualifiedName();
if (qName != null) {
document.replaceString(
newElement.getTextRange().getStartOffset(), newEndOffset, qName);
newEndOffset = newElement.getTextRange().getStartOffset() + qName.length();
}
}
}
}
}
}
if (toDelete.isValid()) {
document.deleteString(toDelete.getStartOffset(), toDelete.getEndOffset());
}
return newEndOffset;
}
public static String checkMethodReferenceContext(
PsiMethodReferenceExpression methodRef, PsiElement resolve, PsiType functionalInterfaceType) {
final PsiClass containingClass =
resolve instanceof PsiMethod
? ((PsiMethod) resolve).getContainingClass()
: (PsiClass) resolve;
final boolean isStaticSelector = isStaticallyReferenced(methodRef);
final PsiElement qualifier = methodRef.getQualifier();
boolean isMethodStatic = false;
boolean receiverReferenced = false;
boolean isConstructor = true;
if (resolve instanceof PsiMethod) {
final PsiMethod method = (PsiMethod) resolve;
isMethodStatic = method.hasModifierProperty(PsiModifier.STATIC);
isConstructor = method.isConstructor();
receiverReferenced = hasReceiver(methodRef, method, functionalInterfaceType);
if (method.hasModifierProperty(PsiModifier.ABSTRACT)
&& qualifier instanceof PsiSuperExpression) {
return "Abstract method '" + method.getName() + "' cannot be accessed directly";
}
}
if (!receiverReferenced && isStaticSelector && !isMethodStatic && !isConstructor) {
return "Non-static method cannot be referenced from a static context";
}
if (!receiverReferenced && !isStaticSelector && isMethodStatic) {
return "Static method referenced through non-static qualifier";
}
if (receiverReferenced && isStaticSelector && isMethodStatic && !isConstructor) {
return "Static method referenced through receiver";
}
if (isMethodStatic && isStaticSelector && qualifier instanceof PsiTypeElement) {
final PsiJavaCodeReferenceElement referenceElement =
PsiTreeUtil.getChildOfType(qualifier, PsiJavaCodeReferenceElement.class);
if (referenceElement != null) {
final PsiReferenceParameterList parameterList = referenceElement.getParameterList();
if (parameterList != null && parameterList.getTypeArguments().length > 0) {
return "Parameterized qualifier on static method reference";
}
}
}
if (isConstructor) {
if (containingClass != null
&& PsiUtil.isInnerClass(containingClass)
&& containingClass.isPhysical()) {
PsiClass outerClass = containingClass.getContainingClass();
if (outerClass != null
&& !InheritanceUtil.hasEnclosingInstanceInScope(outerClass, methodRef, true, false)) {
return "An enclosing instance of type "
+ PsiFormatUtil.formatClass(outerClass, PsiFormatUtilBase.SHOW_NAME)
+ " is not in scope";
}
}
}
return null;
}
public static boolean isFreeFromTypeInferenceArgs(
final PsiParameter[] methodParameters,
final PsiLambdaExpression lambdaExpression,
final PsiExpression expression,
final PsiSubstitutor subst,
final PsiType functionalInterfaceType,
final PsiTypeParameter typeParam) {
if (expression instanceof PsiCallExpression
&& ((PsiCallExpression) expression).getTypeArguments().length > 0) return true;
if (expression instanceof PsiNewExpression) {
final PsiJavaCodeReferenceElement classReference =
((PsiNewExpression) expression).getClassOrAnonymousClassReference();
if (classReference != null) {
final PsiReferenceParameterList parameterList = classReference.getParameterList();
if (parameterList != null) {
final PsiTypeElement[] typeParameterElements = parameterList.getTypeParameterElements();
if (typeParameterElements.length > 0) {
if (!(typeParameterElements[0].getType() instanceof PsiDiamondType)) {
return true;
}
}
}
}
}
final PsiParameter[] lambdaParams = lambdaExpression.getParameterList().getParameters();
if (lambdaParams.length != methodParameters.length) return false;
final boolean[] independent = {true};
final PsiMethod interfaceMethod = getFunctionalInterfaceMethod(functionalInterfaceType);
if (interfaceMethod == null) return false;
final TypeParamsChecker paramsChecker = new TypeParamsChecker(lambdaExpression);
for (PsiParameter parameter : interfaceMethod.getParameterList().getParameters()) {
subst.substitute(parameter.getType()).accept(paramsChecker);
}
paramsChecker.myUsedTypeParams.add(typeParam);
expression.accept(
new JavaRecursiveElementWalkingVisitor() {
@Override
public void visitConditionalExpression(PsiConditionalExpression expression) {
final PsiExpression thenExpression = expression.getThenExpression();
if (thenExpression != null) {
thenExpression.accept(this);
}
final PsiExpression elseExpression = expression.getElseExpression();
if (elseExpression != null) {
elseExpression.accept(this);
}
}
@Override
public void visitReferenceExpression(PsiReferenceExpression expression) {
super.visitReferenceExpression(expression);
int usedParamIdx = -1;
for (int i = 0; i < lambdaParams.length; i++) {
PsiParameter param = lambdaParams[i];
if (expression.isReferenceTo(param)) {
usedParamIdx = i;
break;
}
}
if (usedParamIdx > -1
&& dependsOnTypeParams(
subst.substitute(methodParameters[usedParamIdx].getType()),
functionalInterfaceType,
lambdaExpression,
paramsChecker.myUsedTypeParams.toArray(
new PsiTypeParameter[paramsChecker.myUsedTypeParams.size()]))) {
independent[0] = false;
}
}
});
return independent[0];
}
