private static void autoImport(final PsiFile file, int offset, final Editor editor) {
final CharSequence text = editor.getDocument().getCharsSequence();
while (offset > 0 && Character.isJavaIdentifierPart(text.charAt(offset))) offset--;
if (offset <= 0) return;
while (offset > 0 && Character.isWhitespace(text.charAt(offset))) offset--;
if (offset <= 0 || text.charAt(offset) != '.') return;
offset--;
while (offset > 0 && Character.isWhitespace(text.charAt(offset))) offset--;
if (offset <= 0) return;
PsiJavaCodeReferenceElement element =
extractReference(
PsiTreeUtil.findElementOfClassAtOffset(file, offset, PsiExpression.class, false));
if (element == null) return;
while (true) {
final PsiJavaCodeReferenceElement qualifier = extractReference(element.getQualifier());
if (qualifier == null) break;
element = qualifier;
}
if (!(element.getParent() instanceof PsiMethodCallExpression)
&& element.multiResolve(true).length == 0) {
new ImportClassFix(element).doFix(editor, false, false);
}
}
private static boolean isAnnotated(ASTNode element) {
PsiJavaCodeReferenceElement ref = (PsiJavaCodeReferenceElement) element.getPsi();
PsiElement qualifier = ref.getQualifier();
if (qualifier instanceof PsiJavaCodeReferenceElement) {
if (((PsiJavaCodeReferenceElement) qualifier).resolve() instanceof PsiPackage) {
return false;
}
if (PsiTreeUtil.getChildOfType(qualifier, PsiAnnotation.class) != null) {
return true;
}
}
PsiModifierList modifierList = PsiImplUtil.findNeighbourModifierList(ref);
if (modifierList != null) {
for (PsiAnnotation annotation : modifierList.getAnnotations()) {
if (PsiImplUtil.findApplicableTarget(annotation, PsiAnnotation.TargetType.TYPE_USE)
!= null) {
return true;
}
}
}
return false;
}
private void findUsagesForStaticMethod(PsiMethod method, List<FixableUsageInfo> usages) {
final PsiManager psiManager = method.getManager();
final Project project = psiManager.getProject();
final GlobalSearchScope scope = GlobalSearchScope.allScope(project);
final Iterable<PsiReference> calls = ReferencesSearch.search(method, scope);
final String fullyQualifiedName = getQualifiedName();
for (PsiReference reference : calls) {
final PsiElement referenceElement = reference.getElement();
final PsiElement parent = referenceElement.getParent();
if (parent instanceof PsiMethodCallExpression) {
final PsiMethodCallExpression call = (PsiMethodCallExpression) parent;
if (!isInMovedElement(call)) {
usages.add(new RetargetStaticMethodCall(call, fullyQualifiedName));
}
} else if (parent instanceof PsiImportStaticStatement) {
final PsiJavaCodeReferenceElement importReference =
((PsiImportStaticStatement) parent).getImportReference();
if (importReference != null) {
final PsiElement qualifier = importReference.getQualifier();
if (qualifier instanceof PsiJavaCodeReferenceElement) {
usages.add(
new ReplaceClassReference(
(PsiJavaCodeReferenceElement) qualifier, fullyQualifiedName));
}
}
}
}
usages.add(new RemoveMethod(method));
}
private static PsiFile getTargetFile(PsiElement element) {
final PsiConstructorCall constructorCall = (PsiConstructorCall) element;
// Enum constants constructors are file local
if (constructorCall instanceof PsiEnumConstant) return constructorCall.getContainingFile();
PsiJavaCodeReferenceElement referenceElement = getReferenceElement(constructorCall);
if (referenceElement.getQualifier() instanceof PsiJavaCodeReferenceElement) {
PsiJavaCodeReferenceElement qualifier =
(PsiJavaCodeReferenceElement) referenceElement.getQualifier();
PsiElement psiElement = qualifier.resolve();
if (psiElement instanceof PsiClass) {
PsiClass psiClass = (PsiClass) psiElement;
return psiClass.getContainingFile();
}
}
return null;
}
@Nullable
private static PsiJavaCodeReferenceElement getOutermostReferenceElement(
@Nullable PsiJavaCodeReferenceElement ref) {
if (ref == null) return null;
PsiElement qualifier;
while ((qualifier = ref.getQualifier()) instanceof PsiJavaCodeReferenceElement) {
ref = (PsiJavaCodeReferenceElement) qualifier;
}
return ref;
}
@Override
public void visitReferenceElement(PsiJavaCodeReferenceElement reference) {
super.visitReferenceElement(reference);
if (reference.getQualifier() != null) {
return;
}
final PsiElement target = reference.resolve();
if (!(target instanceof PsiClass) || !PsiUtil.isLocalClass((PsiClass) target)) {
return;
}
referenceToLocalClass = true;
}
/**
* @return true if both expressions resolve to the same variable/class or field in the same
* instance of the class
*/
private static boolean sameInstanceReferences(
@Nullable PsiJavaCodeReferenceElement lRef,
@Nullable PsiJavaCodeReferenceElement rRef,
PsiManager manager) {
if (lRef == null && rRef == null) return true;
if (lRef == null || rRef == null) return false;
PsiElement lResolved = lRef.resolve();
PsiElement rResolved = rRef.resolve();
if (!manager.areElementsEquivalent(lResolved, rResolved)) return false;
if (!(lResolved instanceof PsiVariable)) return false;
final PsiVariable variable = (PsiVariable) lResolved;
if (variable.hasModifierProperty(PsiModifier.STATIC)) return true;
final PsiElement lQualifier = lRef.getQualifier();
final PsiElement rQualifier = rRef.getQualifier();
if (lQualifier instanceof PsiJavaCodeReferenceElement
&& rQualifier instanceof PsiJavaCodeReferenceElement) {
return sameInstanceReferences(
(PsiJavaCodeReferenceElement) lQualifier,
(PsiJavaCodeReferenceElement) rQualifier,
manager);
}
if (Comparing.equal(lQualifier, rQualifier)) return true;
boolean lThis =
lQualifier == null
|| lQualifier instanceof PsiThisExpression
|| lQualifier instanceof PsiSuperExpression;
boolean rThis =
rQualifier == null
|| rQualifier instanceof PsiThisExpression
|| rQualifier instanceof PsiSuperExpression;
if (lThis && rThis) {
final PsiJavaCodeReferenceElement llQualifier = getQualifier(lQualifier);
final PsiJavaCodeReferenceElement rrQualifier = getQualifier(rQualifier);
return sameInstanceReferences(llQualifier, rrQualifier, manager);
}
return false;
}
/**
* Allows to check if static import may be performed for the given element.
*
* @param element element to check
* @return target class that may be statically imported if any; <code>null</code> otherwise
*/
@Nullable
public static PsiClass getClassToPerformStaticImport(@NotNull PsiElement element) {
if (!PsiUtil.isLanguageLevel5OrHigher(element)) return null;
if (!(element instanceof PsiIdentifier)
|| !(element.getParent() instanceof PsiJavaCodeReferenceElement)) {
return null;
}
PsiJavaCodeReferenceElement refExpr = (PsiJavaCodeReferenceElement) element.getParent();
if (refExpr instanceof PsiMethodReferenceExpression) return null;
final PsiElement gParent = refExpr.getParent();
if (gParent instanceof PsiMethodReferenceExpression) return null;
if (!(gParent instanceof PsiJavaCodeReferenceElement)
|| isParameterizedReference((PsiJavaCodeReferenceElement) gParent)) return null;
PsiElement resolved = refExpr.resolve();
if (!(resolved instanceof PsiClass)) {
return null;
}
PsiClass psiClass = (PsiClass) resolved;
if (PsiUtil.isFromDefaultPackage(psiClass)
|| psiClass.hasModifierProperty(PsiModifier.PRIVATE)
|| psiClass.getQualifiedName() == null) return null;
final PsiElement ggParent = gParent.getParent();
if (ggParent instanceof PsiMethodCallExpression) {
final PsiMethodCallExpression call = (PsiMethodCallExpression) ggParent.copy();
final PsiElement qualifier = call.getMethodExpression().getQualifier();
if (qualifier == null) return null;
qualifier.delete();
final PsiMethod method = call.resolveMethod();
if (method != null && method.getContainingClass() != psiClass) return null;
} else {
final PsiJavaCodeReferenceElement copy = (PsiJavaCodeReferenceElement) gParent.copy();
final PsiElement qualifier = copy.getQualifier();
if (qualifier == null) return null;
qualifier.delete();
final PsiElement target = copy.resolve();
if (target != null && PsiTreeUtil.getParentOfType(target, PsiClass.class) != psiClass)
return null;
}
PsiFile file = refExpr.getContainingFile();
if (!(file instanceof PsiJavaFile)) return null;
PsiImportList importList = ((PsiJavaFile) file).getImportList();
if (importList == null) return null;
return psiClass;
}
private static void autoImportReference(
@NotNull PsiFile file,
@NotNull Editor editor,
@Nullable PsiJavaCodeReferenceElement element) {
if (element == null) return;
while (true) {
final PsiJavaCodeReferenceElement qualifier = extractReference(element.getQualifier());
if (qualifier == null) break;
element = qualifier;
}
if (!(element.getParent() instanceof PsiMethodCallExpression)
&& element.multiResolve(true).length == 0) {
new ImportClassFix(element).doFix(editor, false, false);
PsiDocumentManager.getInstance(file.getProject()).commitDocument(editor.getDocument());
}
}
public ClassResolverProcessor(String className, PsiElement place) {
myClassName = className;
final PsiFile file = place.getContainingFile();
if (file instanceof JavaCodeFragment) {
if (((JavaCodeFragment) file).getVisibilityChecker() != null) place = null;
}
myPlace = place;
if (place instanceof PsiJavaCodeReferenceElement) {
final PsiJavaCodeReferenceElement expression = (PsiJavaCodeReferenceElement) place;
final PsiElement qualifierExpression = expression.getQualifier();
if (qualifierExpression instanceof PsiExpression) {
final PsiType type = ((PsiExpression) qualifierExpression).getType();
if (type instanceof PsiClassType) {
myAccessClass = ((PsiClassType) type).resolve();
}
} else if (qualifierExpression instanceof PsiJavaCodeReferenceElement) {
final PsiElement resolve = ((PsiJavaCodeReferenceElement) qualifierExpression).resolve();
if (resolve instanceof PsiClass) {
myAccessClass = (PsiClass) resolve;
}
}
}
}
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;
}
@Override
public void visitReferenceElement(PsiJavaCodeReferenceElement reference) {
if (referenceFound) {
return;
}
super.visitReferenceElement(reference);
if (reference.getQualifier() != null) 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;
}
public TreeElement process(TreeElement element, boolean addImports, boolean uncompleteCode) {
IElementType elementType = element.getElementType();
if (elementType == JavaElementType.JAVA_CODE_REFERENCE
|| elementType == JavaElementType.REFERENCE_EXPRESSION) {
final IElementType parentElementType = element.getTreeParent().getElementType();
if (elementType == JavaElementType.JAVA_CODE_REFERENCE
|| parentElementType == JavaElementType.REFERENCE_EXPRESSION
|| parentElementType == JavaElementType.METHOD_REF_EXPRESSION
|| uncompleteCode) {
final PsiJavaCodeReferenceElement ref =
(PsiJavaCodeReferenceElement) SourceTreeToPsiMap.treeElementToPsi(element);
final PsiReferenceParameterList parameterList = ref.getParameterList();
if (parameterList != null) {
final PsiTypeElement[] typeParameters = parameterList.getTypeParameterElements();
for (PsiTypeElement typeParameter : typeParameters) {
process(
(TreeElement) SourceTreeToPsiMap.psiElementToTree(typeParameter),
addImports,
uncompleteCode);
}
}
boolean rightKind = true;
if (elementType == JavaElementType.JAVA_CODE_REFERENCE) {
int kind = ((PsiJavaCodeReferenceElementImpl) element).getKind();
rightKind =
kind == PsiJavaCodeReferenceElementImpl.CLASS_NAME_KIND
|| kind == PsiJavaCodeReferenceElementImpl.CLASS_OR_PACKAGE_NAME_KIND;
}
if (rightKind) {
boolean isInsideDocComment =
TreeUtil.findParent(element, JavaDocElementType.DOC_COMMENT) != null;
boolean isShort = !((SourceJavaCodeReference) element).isQualified();
if (!makeFQ(isInsideDocComment)) {
if (isShort) return element; // short name already, no need to change
}
PsiElement refElement;
if (!uncompleteCode) {
refElement = ref.resolve();
} else {
PsiResolveHelper helper =
JavaPsiFacade.getInstance(element.getManager().getProject()).getResolveHelper();
refElement =
helper.resolveReferencedClass(
((SourceJavaCodeReference) element).getClassNameText(),
SourceTreeToPsiMap.treeElementToPsi(element));
}
if (refElement instanceof PsiClass) {
if (makeFQ(isInsideDocComment)) {
String qName = ((PsiClass) refElement).getQualifiedName();
if (qName == null) return element;
PsiImportHolder file =
(PsiImportHolder)
SourceTreeToPsiMap.treeElementToPsi(element).getContainingFile();
if (file instanceof PsiJavaFile
&& ImportHelper.isImplicitlyImported(qName, (PsiJavaFile) file)) {
if (isShort) return element;
return (TreeElement)
makeShortReference(
(CompositeElement) element, (PsiClass) refElement, addImports);
}
if (file instanceof PsiJavaFile) {
String thisPackageName = ((PsiJavaFile) file).getPackageName();
if (ImportHelper.hasPackage(qName, thisPackageName)) {
if (!isShort) {
return (TreeElement)
makeShortReference(
(CompositeElement) element, (PsiClass) refElement, addImports);
}
}
}
return (TreeElement) replaceReferenceWithFQ(element, (PsiClass) refElement);
} else {
int oldLength = element.getTextLength();
TreeElement treeElement =
(TreeElement)
makeShortReference(
(CompositeElement) element, (PsiClass) refElement, addImports);
if (treeElement.getTextLength() == oldLength
&& ((PsiClass) refElement).getContainingClass() != null) {
PsiElement qualifier = ref.getQualifier();
if (qualifier instanceof PsiJavaCodeReferenceElement
&& ((PsiJavaCodeReferenceElement) qualifier).resolve() instanceof PsiClass) {
process((TreeElement) qualifier.getNode(), addImports, uncompleteCode);
}
}
return treeElement;
}
}
}
}
}
for (TreeElement child = element.getFirstChildNode();
child != null;
child = child.getTreeNext()) {
child = process(child, addImports, uncompleteCode);
}
return element;
}
@Override
public ASTNode process(
@NotNull ASTNode element,
boolean addImports,
boolean incompleteCode,
boolean useFqInJavadoc,
boolean useFqInCode) {
IElementType elementType = element.getElementType();
if ((elementType == JavaElementType.JAVA_CODE_REFERENCE
|| elementType == JavaElementType.REFERENCE_EXPRESSION)
&& !isAnnotated(element)) {
IElementType parentType = element.getTreeParent().getElementType();
if (elementType == JavaElementType.JAVA_CODE_REFERENCE
|| incompleteCode
|| parentType == JavaElementType.REFERENCE_EXPRESSION
|| parentType == JavaElementType.METHOD_REF_EXPRESSION) {
PsiJavaCodeReferenceElement ref = (PsiJavaCodeReferenceElement) element.getPsi();
PsiReferenceParameterList parameterList = ref.getParameterList();
if (parameterList != null) {
PsiTypeElement[] typeParameters = parameterList.getTypeParameterElements();
for (PsiTypeElement typeParameter : typeParameters) {
process(
typeParameter.getNode(), addImports, incompleteCode, useFqInJavadoc, useFqInCode);
}
}
boolean rightKind = true;
if (elementType == JavaElementType.JAVA_CODE_REFERENCE) {
PsiJavaCodeReferenceElementImpl impl = (PsiJavaCodeReferenceElementImpl) element;
int kind = impl.getKind(impl.getContainingFile());
rightKind =
kind == PsiJavaCodeReferenceElementImpl.CLASS_NAME_KIND
|| kind == PsiJavaCodeReferenceElementImpl.CLASS_OR_PACKAGE_NAME_KIND;
}
if (rightKind) {
// annotations may jump out of reference (see PsiJavaCodeReferenceImpl#setAnnotations())
// so they should be processed first
List<PsiAnnotation> annotations =
PsiTreeUtil.getChildrenOfTypeAsList(ref, PsiAnnotation.class);
for (PsiAnnotation annotation : annotations) {
process(annotation.getNode(), addImports, incompleteCode, useFqInJavadoc, useFqInCode);
}
boolean isInsideDocComment =
TreeUtil.findParent(element, JavaDocElementType.DOC_COMMENT) != null;
boolean isShort = !ref.isQualified();
if (isInsideDocComment ? !useFqInJavadoc : !useFqInCode) {
if (isShort) return element; // short name already, no need to change
}
PsiElement refElement;
if (!incompleteCode) {
refElement = ref.resolve();
} else {
PsiResolveHelper helper =
JavaPsiFacade.getInstance(ref.getManager().getProject()).getResolveHelper();
final SourceJavaCodeReference reference = (SourceJavaCodeReference) element;
refElement = helper.resolveReferencedClass(reference.getClassNameText(), ref);
}
if (refElement instanceof PsiClass) {
PsiClass psiClass = (PsiClass) refElement;
if (isInsideDocComment ? useFqInJavadoc : useFqInCode) {
String qName = psiClass.getQualifiedName();
if (qName == null) return element;
PsiFile file = ref.getContainingFile();
if (file instanceof PsiJavaFile) {
if (ImportHelper.isImplicitlyImported(qName, (PsiJavaFile) file)) {
if (isShort) return element;
return makeShortReference((CompositeElement) element, psiClass, addImports);
}
String thisPackageName = ((PsiJavaFile) file).getPackageName();
if (ImportHelper.hasPackage(qName, thisPackageName)) {
if (!isShort) {
return makeShortReference((CompositeElement) element, psiClass, addImports);
}
}
}
return replaceReferenceWithFQ(element, psiClass);
} else {
int oldLength = element.getTextLength();
ASTNode treeElement =
makeShortReference((CompositeElement) element, psiClass, addImports);
if (treeElement.getTextLength() == oldLength
&& psiClass.getContainingClass() != null) {
PsiElement qualifier = ref.getQualifier();
if (qualifier instanceof PsiJavaCodeReferenceElement
&& ((PsiJavaCodeReferenceElement) qualifier).resolve() instanceof PsiClass) {
process(
qualifier.getNode(), addImports, incompleteCode, useFqInJavadoc, useFqInCode);
}
}
return treeElement;
}
}
}
}
}
for (ASTNode child = element.getFirstChildNode(); child != null; child = child.getTreeNext()) {
//noinspection AssignmentToForLoopParameter
child = process(child, addImports, incompleteCode, useFqInJavadoc, useFqInCode);
}
return element;
}
private static void addNamesToImport(
@NotNull Set<String> names,
@NotNull PsiElement scope,
@NotNull String thisPackageName,
@NotNull Set<String> namesToImportStaticly,
PsiFile context) {
if (scope instanceof PsiImportList) return;
final LinkedList<PsiElement> stack = new LinkedList<PsiElement>();
stack.add(scope);
while (!stack.isEmpty()) {
final PsiElement child = stack.removeFirst();
if (child instanceof PsiImportList) continue;
stack.addAll(Arrays.asList(child.getChildren()));
for (final PsiReference reference : child.getReferences()) {
if (!(reference instanceof PsiJavaReference)) continue;
final PsiJavaReference javaReference = (PsiJavaReference) reference;
if (javaReference instanceof JavaClassReference) {
if (((JavaClassReference) javaReference).getContextReference() != null) continue;
}
PsiJavaCodeReferenceElement referenceElement = null;
if (reference instanceof PsiJavaCodeReferenceElement) {
referenceElement = (PsiJavaCodeReferenceElement) child;
if (referenceElement.getQualifier() != null) {
continue;
}
if (reference instanceof PsiJavaCodeReferenceElementImpl
&& ((PsiJavaCodeReferenceElementImpl) reference).getKind()
== PsiJavaCodeReferenceElementImpl.CLASS_IN_QUALIFIED_NEW_KIND) {
continue;
}
}
final JavaResolveResult resolveResult = javaReference.advancedResolve(true);
PsiElement refElement = resolveResult.getElement();
if (refElement == null && referenceElement != null) {
refElement = ResolveClassUtil.resolveClass(referenceElement); // might be uncomplete code
}
PsiElement currentFileResolveScope = resolveResult.getCurrentFileResolveScope();
if (!(currentFileResolveScope instanceof PsiImportStatementBase)) continue;
if (context != null
&& currentFileResolveScope instanceof JspxImportStatement
&& context != ((JspxImportStatement) currentFileResolveScope).getDeclarationFile()) {
continue;
}
if (refElement != null) {
// Add names imported statically
if (referenceElement != null) {
if (currentFileResolveScope instanceof PsiImportStaticStatement) {
PsiImportStaticStatement importStaticStatement =
(PsiImportStaticStatement) currentFileResolveScope;
String name = importStaticStatement.getImportReference().getCanonicalText();
if (importStaticStatement.isOnDemand()) {
String refName = referenceElement.getReferenceName();
if (refName != null) name = name + "." + refName;
}
names.add(name);
namesToImportStaticly.add(name);
continue;
}
}
if (refElement instanceof PsiClass) {
String qName = ((PsiClass) refElement).getQualifiedName();
if (hasPackage(qName, thisPackageName)) continue;
names.add(qName);
}
}
}
}
}
@Nullable
@Override
protected PsiElement getQualifierExpression() {
final PsiJavaCodeReferenceElement element = myRef.getElement();
return element != null ? element.getQualifier() : null;
}