@Override
@SuppressWarnings({"CloneDoesntDeclareCloneNotSupportedException", "CloneDoesntCallSuperClone"})
protected PsiFileImpl clone() {
FileViewProvider viewProvider = getViewProvider();
FileViewProvider providerCopy = viewProvider.clone();
final Language language = getLanguage();
if (providerCopy == null) {
throw new AssertionError(
"Unable to clone the view provider: " + viewProvider + "; " + language);
}
PsiFileImpl clone = BlockSupportImpl.getFileCopy(this, providerCopy);
copyCopyableDataTo(clone);
if (getTreeElement() != null) {
// not set by provider in clone
final FileElement treeClone = (FileElement) calcTreeElement().clone();
clone.setTreeElementPointer(
treeClone); // should not use setTreeElement here because cloned file still have
// VirtualFile (SCR17963)
treeClone.setPsi(clone);
}
if (viewProvider.isEventSystemEnabled()) {
clone.myOriginalFile = this;
} else if (myOriginalFile != null) {
clone.myOriginalFile = myOriginalFile;
}
return clone;
}
public StubTree calcStubTree() {
FileElement fileElement = calcTreeElement();
synchronized (myStubFromTreeLock) {
SoftReference<StubTree> ref = fileElement.getUserData(STUB_TREE_IN_PARSED_TREE);
StubTree tree = SoftReference.dereference(ref);
if (tree == null) {
ApplicationManager.getApplication().assertReadAccessAllowed();
IElementType contentElementType = getContentElementType();
if (!(contentElementType instanceof IStubFileElementType)) {
VirtualFile vFile = getVirtualFile();
String message =
"ContentElementType: "
+ contentElementType
+ "; file: "
+ this
+ "\n\t"
+ "Boolean.TRUE.equals(getUserData(BUILDING_STUB)) = "
+ Boolean.TRUE.equals(getUserData(BUILDING_STUB))
+ "\n\t"
+ "getTreeElement() = "
+ getTreeElement()
+ "\n\t"
+ "vFile instanceof VirtualFileWithId = "
+ (vFile instanceof VirtualFileWithId)
+ "\n\t"
+ "StubUpdatingIndex.canHaveStub(vFile) = "
+ StubTreeLoader.getInstance().canHaveStub(vFile);
rebuildStub();
throw new AssertionError(message);
}
StubElement currentStubTree =
((IStubFileElementType) contentElementType).getBuilder().buildStubTree(this);
if (currentStubTree == null) {
throw new AssertionError(
"Stub tree wasn't built for " + contentElementType + "; file: " + this);
}
tree = new StubTree((PsiFileStub) currentStubTree);
tree.setDebugInfo("created in calcStubTree");
try {
TreeUtil.bindStubsToTree(this, tree);
} catch (TreeUtil.StubBindingException e) {
rebuildStub();
throw new RuntimeException("Stub and PSI element type mismatch in " + getName(), e);
}
fileElement.putUserData(STUB_TREE_IN_PARSED_TREE, new SoftReference<StubTree>(tree));
}
return tree;
}
}
private void doClearCaches(String reason) {
final FileElement tree = getTreeElement();
if (tree != null) {
tree.clearCaches();
}
synchronized (PsiLock.LOCK) {
clearStub(reason);
}
if (tree != null) {
tree.putUserData(STUB_TREE_IN_PARSED_TREE, null);
}
clearCaches();
}
@NotNull
protected FileElement createFileElement(CharSequence docText) {
final FileElement treeElement;
final TreeElement contentLeaf = createContentLeafElement(docText);
if (contentLeaf instanceof FileElement) {
treeElement = (FileElement) contentLeaf;
} else {
final CompositeElement xxx = ASTFactory.composite(myElementType);
assert xxx instanceof FileElement : "BUMM";
treeElement = (FileElement) xxx;
treeElement.rawAddChildrenWithoutNotifications(contentLeaf);
}
return treeElement;
}
protected PsiFileImpl cloneImpl(FileElement treeElementClone) {
PsiFileImpl clone = (PsiFileImpl) super.clone();
clone.setTreeElementPointer(
treeElementClone); // should not use setTreeElement here because cloned file still have
// VirtualFile (SCR17963)
treeElementClone.setPsi(clone);
return clone;
}
public void unloadContent() {
ApplicationManager.getApplication().assertWriteAccessAllowed();
clearCaches();
myViewProvider.beforeContentsSynchronized();
synchronized (PsiLock.LOCK) {
FileElement treeElement = derefTreeElement();
DebugUtil.startPsiModification("unloadContent");
try {
if (treeElement != null) {
myTreeElementPointer = null;
treeElement.detachFromFile();
DebugUtil.onInvalidated(treeElement);
}
clearStub("unloadContent");
} finally {
DebugUtil.finishPsiModification();
}
}
}
@NotNull
private FileElement loadTreeElement() {
ApplicationManager.getApplication().assertReadAccessAllowed();
final FileViewProvider viewProvider = getViewProvider();
if (viewProvider.isPhysical()
&& myManager.isAssertOnFileLoading(viewProvider.getVirtualFile())) {
LOG.error(
"Access to tree elements not allowed in tests. path='"
+ viewProvider.getVirtualFile().getPresentableUrl()
+ "'");
}
Document cachedDocument =
FileDocumentManager.getInstance().getCachedDocument(getViewProvider().getVirtualFile());
FileElement treeElement = createFileElement(viewProvider.getContents());
treeElement.setPsi(this);
List<Pair<StubBasedPsiElementBase, CompositeElement>> bindings =
calcStubAstBindings(treeElement, cachedDocument);
synchronized (PsiLock.LOCK) {
FileElement existing = derefTreeElement();
if (existing != null) {
return existing;
}
switchFromStubToAst(bindings);
myStub = null;
myTreeElementPointer = createTreeElementPointer(treeElement);
if (LOG.isDebugEnabled() && viewProvider.isPhysical()) {
LOG.debug("Loaded text for file " + viewProvider.getVirtualFile().getPresentableUrl());
}
return treeElement;
}
}
