public static boolean isClassEquivalentTo(@NotNull PsiClass aClass, PsiElement another) {
if (aClass == another) return true;
if (!(another instanceof PsiClass)) return false;
String name1 = aClass.getName();
if (name1 == null) return false;
if (!another.isValid()) return false;
String name2 = ((PsiClass) another).getName();
if (name2 == null) return false;
if (name1.hashCode() != name2.hashCode()) return false;
if (!name1.equals(name2)) return false;
String qName1 = aClass.getQualifiedName();
String qName2 = ((PsiClass) another).getQualifiedName();
if (qName1 == null || qName2 == null) {
//noinspection StringEquality
if (qName1 != qName2) return false;
if (aClass instanceof PsiTypeParameter && another instanceof PsiTypeParameter) {
PsiTypeParameter p1 = (PsiTypeParameter) aClass;
PsiTypeParameter p2 = (PsiTypeParameter) another;
return p1.getIndex() == p2.getIndex()
&& aClass.getManager().areElementsEquivalent(p1.getOwner(), p2.getOwner());
} else {
return false;
}
}
if (qName1.hashCode() != qName2.hashCode() || !qName1.equals(qName2)) {
return false;
}
if (originalElement(aClass).equals(originalElement((PsiClass) another))) {
return true;
}
final PsiFile file1 = aClass.getContainingFile().getOriginalFile();
final PsiFile file2 = another.getContainingFile().getOriginalFile();
// see com.intellij.openapi.vcs.changes.PsiChangeTracker
// see com.intellij.psi.impl.PsiFileFactoryImpl#createFileFromText(CharSequence,PsiFile)
final PsiFile original1 = file1.getUserData(PsiFileFactory.ORIGINAL_FILE);
final PsiFile original2 = file2.getUserData(PsiFileFactory.ORIGINAL_FILE);
if (original1 == original2 && original1 != null
|| original1 == file2
|| original2 == file1
|| file1 == file2) {
return compareClassSeqNumber(aClass, (PsiClass) another);
}
final FileIndexFacade fileIndex =
ServiceManager.getService(file1.getProject(), FileIndexFacade.class);
final VirtualFile vfile1 = file1.getViewProvider().getVirtualFile();
final VirtualFile vfile2 = file2.getViewProvider().getVirtualFile();
boolean lib1 = fileIndex.isInLibraryClasses(vfile1);
boolean lib2 = fileIndex.isInLibraryClasses(vfile2);
return (fileIndex.isInSource(vfile1) || lib1) && (fileIndex.isInSource(vfile2) || lib2);
}
// returns (injected psi, leaf element at the offset, language of the leaf element)
// since findElementAt() is expensive, we trying to reuse its result
@NotNull
private static Trinity<PsiElement, PsiElement, Language> tryOffset(
@NotNull PsiFile hostFile, final int offset, @NotNull PsiDocumentManager documentManager) {
FileViewProvider provider = hostFile.getViewProvider();
Language leafLanguage = null;
PsiElement leafElement = null;
for (Language language : provider.getLanguages()) {
PsiElement element = provider.findElementAt(offset, language);
if (element != null) {
if (leafLanguage == null) {
leafLanguage = language;
leafElement = element;
}
PsiElement injected = findInside(element, hostFile, offset, documentManager);
if (injected != null) return Trinity.create(injected, element, language);
}
// maybe we are at the border between two psi elements, then try to find injection at the end
// of the left element
if (offset != 0 && (element == null || element.getTextRange().getStartOffset() == offset)) {
PsiElement leftElement = provider.findElementAt(offset - 1, language);
if (leftElement != null && leftElement.getTextRange().getEndOffset() == offset) {
PsiElement injected = findInside(leftElement, hostFile, offset, documentManager);
if (injected != null) return Trinity.create(injected, element, language);
}
}
}
return Trinity.create(null, leafElement, leafLanguage);
}
public static void enumerate(
@NotNull PsiElement host,
@NotNull PsiFile containingFile,
boolean probeUp,
@NotNull PsiLanguageInjectionHost.InjectedPsiVisitor visitor) {
// do not inject into nonphysical files except during completion
if (!containingFile.isPhysical() && containingFile.getOriginalFile() == containingFile) {
final PsiElement context =
InjectedLanguageManager.getInstance(containingFile.getProject())
.getInjectionHost(containingFile);
if (context == null) return;
final PsiFile file = context.getContainingFile();
if (file == null || !file.isPhysical() && file.getOriginalFile() == file) return;
}
if (containingFile.getViewProvider() instanceof InjectedFileViewProvider)
return; // no injection inside injection
PsiElement inTree = loadTree(host, containingFile);
if (inTree != host) {
host = inTree;
containingFile = host.getContainingFile();
}
MultiHostRegistrarImpl registrar = probeElementsUp(host, containingFile, probeUp);
if (registrar == null) {
return;
}
List<Pair<Place, PsiFile>> places = registrar.getResult();
for (Pair<Place, PsiFile> pair : places) {
PsiFile injectedPsi = pair.second;
visitor.visit(injectedPsi, pair.first);
}
}
private static int getNewIndent(final PsiFile psiFile, final int firstWhitespace) {
final Document document = psiFile.getViewProvider().getDocument();
final int startOffset = document.getLineStartOffset(document.getLineNumber(firstWhitespace));
int endOffset = startOffset;
final CharSequence charsSequence = document.getCharsSequence();
while (Character.isWhitespace(charsSequence.charAt(endOffset++))) ;
final String newIndentStr = charsSequence.subSequence(startOffset, endOffset - 1).toString();
return IndentHelperImpl.getIndent(
psiFile.getProject(), psiFile.getFileType(), newIndentStr, true);
}
@Nullable
@Override
public Document getDocument(@NotNull PsiFile file) {
if (file instanceof PsiBinaryFile) return null;
Document document = getCachedDocument(file);
if (document != null) {
if (!file.getViewProvider().isPhysical() && document.getUserData(HARD_REF_TO_PSI) == null) {
PsiUtilCore.ensureValid(file);
cachePsi(document, file);
}
return document;
}
FileViewProvider viewProvider = file.getViewProvider();
if (!viewProvider.isEventSystemEnabled()) return null;
document = FileDocumentManager.getInstance().getDocument(viewProvider.getVirtualFile());
if (document != null) {
if (document.getTextLength() != file.getTextLength()) {
String message =
"Document/PSI mismatch: "
+ file
+ " ("
+ file.getClass()
+ "); physical="
+ viewProvider.isPhysical();
if (document.getTextLength() + file.getTextLength() < 8096) {
message +=
"\n=== document ===\n" + document.getText() + "\n=== PSI ===\n" + file.getText();
}
throw new AssertionError(message);
}
if (!viewProvider.isPhysical()) {
PsiUtilCore.ensureValid(file);
cachePsi(document, file);
file.putUserData(HARD_REF_TO_DOCUMENT, document);
}
}
return document;
}
@NotNull
public static GlobalSearchScope getMaximalScope(@NotNull FindUsagesHandler handler) {
PsiElement element = handler.getPsiElement();
Project project = element.getProject();
PsiFile file = element.getContainingFile();
if (file != null
&& ProjectFileIndex.SERVICE
.getInstance(project)
.isInContent(file.getViewProvider().getVirtualFile())) {
return GlobalSearchScope.projectScope(project);
}
return GlobalSearchScope.allScope(project);
}
SelfElementInfo(
@NotNull Project project,
@Nullable ProperTextRange range,
@NotNull AnchorTypeInfo info,
@NotNull PsiFile containingFile,
boolean forInjected) {
myForInjected = forInjected;
myType = info;
myManager = (SmartPointerManagerImpl) SmartPointerManager.getInstance(project);
myMarkerCache = myManager.getMarkerCache(containingFile.getViewProvider().getVirtualFile());
setRange(range);
myMarkerCache.rangeChanged();
}
public static PsiElement findElementInside(
@NotNull PsiFile file, int syncStartOffset, int syncEndOffset, @NotNull AnchorTypeInfo type) {
PsiElement anchor =
file.getViewProvider().findElementAt(syncStartOffset, type.getFileLanguage());
if (anchor == null && syncStartOffset == file.getTextLength()) {
PsiElement lastChild = file.getViewProvider().getPsi(type.getFileLanguage()).getLastChild();
if (lastChild != null) {
anchor = PsiTreeUtil.getDeepestLast(lastChild);
}
}
if (anchor == null) return null;
PsiElement result = findParent(syncStartOffset, syncEndOffset, type, anchor);
if (syncEndOffset == syncStartOffset) {
while (result == null && anchor.getTextRange().getStartOffset() == syncEndOffset) {
anchor = PsiTreeUtil.prevLeaf(anchor, false);
if (anchor == null) break;
result = findParent(syncStartOffset, syncEndOffset, type, anchor);
}
}
return result;
}
// consider injected elements
public static PsiElement findElementAtNoCommit(@NotNull PsiFile file, int offset) {
FileViewProvider viewProvider = file.getViewProvider();
Trinity<PsiElement, PsiElement, Language> result = null;
if (!(viewProvider instanceof InjectedFileViewProvider)) {
PsiDocumentManager documentManager = PsiDocumentManager.getInstance(file.getProject());
result = tryOffset(file, offset, documentManager);
PsiElement injected = result.first;
if (injected != null) {
return injected;
}
}
Language baseLanguage = viewProvider.getBaseLanguage();
if (result != null && baseLanguage == result.third) {
return result.second; // already queried
}
return viewProvider.findElementAt(offset, baseLanguage);
}
@Override
public Document getCachedDocument(@NotNull PsiFile file) {
if (!file.isPhysical()) return null;
VirtualFile vFile = file.getViewProvider().getVirtualFile();
return FileDocumentManager.getInstance().getCachedDocument(vFile);
}
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;
}
@Override
public void writeExternal(Element element) throws WriteExternalException {
PsiDocumentManager.getInstance(myProject).commitAllDocuments();
if (myPsiElements.isEmpty() && myRangeMarkers.isEmpty() && mySerializedElements.isEmpty()) {
throw new WriteExternalException();
}
if (mySerializedElements.isEmpty()) {
for (SmartPsiElementPointer<PsiElement> ptr : myPsiElements) {
PsiElement psiElement = ptr.getElement();
if (psiElement == null || !psiElement.isValid()) {
continue;
}
FoldingInfo fi = psiElement.getUserData(FOLDING_INFO_KEY);
boolean state = fi != null && fi.expanded;
String signature = FoldingPolicy.getSignature(psiElement);
if (signature == null) {
continue;
}
PsiFile containingFile = psiElement.getContainingFile();
PsiElement restoredElement = FoldingPolicy.restoreBySignature(containingFile, signature);
if (!psiElement.equals(restoredElement)) {
StringBuilder trace = new StringBuilder();
PsiElement restoredAgain =
FoldingPolicy.restoreBySignature(containingFile, signature, trace);
LOG.error(
"element: "
+ psiElement
+ "("
+ psiElement.getText()
+ "); restoredElement: "
+ restoredElement
+ "; signature: '"
+ signature
+ "'; file: "
+ containingFile
+ "; injected: "
+ InjectedLanguageManager.getInstance(myProject)
.isInjectedFragment(containingFile)
+ "; languages: "
+ containingFile.getViewProvider().getLanguages()
+ "; restored again: "
+ restoredAgain
+ "; restore produces same results: "
+ (restoredAgain == restoredElement)
+ "; trace:\n"
+ trace);
}
Element e = new Element(ELEMENT_TAG);
e.setAttribute(SIGNATURE_ATT, signature);
e.setAttribute(EXPANDED_ATT, Boolean.toString(state));
element.addContent(e);
}
} else {
// get back postponed state (before folding initialization)
for (SerializedPsiElement entry : mySerializedElements) {
Element e = new Element(ELEMENT_TAG);
e.setAttribute(SIGNATURE_ATT, entry.mySerializedElement);
e.setAttribute(EXPANDED_ATT, Boolean.toString(entry.myFoldingInfo.getExpanded()));
element.addContent(e);
}
}
String date = null;
for (RangeMarker marker : myRangeMarkers) {
FoldingInfo fi = marker.getUserData(FOLDING_INFO_KEY);
boolean state = fi != null && fi.expanded;
Element e = new Element(MARKER_TAG);
if (date == null) {
date = getTimeStamp();
}
if (date.isEmpty()) {
continue;
}
e.setAttribute(DATE_ATT, date);
e.setAttribute(EXPANDED_ATT, Boolean.toString(state));
String signature =
Integer.valueOf(marker.getStartOffset()) + ":" + Integer.valueOf(marker.getEndOffset());
e.setAttribute(SIGNATURE_ATT, signature);
String placeHolderText = fi == null ? DEFAULT_PLACEHOLDER : fi.placeHolder;
e.setAttribute(PLACEHOLDER_ATT, placeHolderText);
element.addContent(e);
}
}
public static Place getShreds(@NotNull PsiFile injectedFile) {
FileViewProvider viewProvider = injectedFile.getViewProvider();
return getShreds(viewProvider);
}
@Override
public boolean isInjectedFragment(final PsiFile file) {
return file.getViewProvider() instanceof InjectedFileViewProvider;
}
