private void clearStub(@NotNull String reason) {
StubTree stubHolder = SoftReference.dereference(myStub);
if (stubHolder != null) {
((PsiFileStubImpl<?>) stubHolder.getRoot()).clearPsi(reason);
}
myStub = null;
}
@Override
@NotNull
public StubTree getStubTree() {
ApplicationManager.getApplication().assertReadAccessAllowed();
StubTree stubTree = dereference(myStub);
if (stubTree != null) return stubTree;
// build newStub out of lock to avoid deadlock
StubTree newStubTree =
(StubTree) StubTreeLoader.getInstance().readOrBuild(getProject(), getVirtualFile(), this);
if (newStubTree == null) {
if (LOG.isDebugEnabled()) {
LOG.debug("No stub for class file in index: " + getVirtualFile().getPresentableUrl());
}
newStubTree = new StubTree(new PsiJavaFileStubImpl("corrupted.classfiles", true));
}
synchronized (myStubLock) {
stubTree = dereference(myStub);
if (stubTree != null) return stubTree;
stubTree = newStubTree;
@SuppressWarnings("unchecked")
PsiFileStubImpl<PsiFile> fileStub = (PsiFileStubImpl) stubTree.getRoot();
fileStub.setPsi(this);
myStub = new SoftReference<StubTree>(stubTree);
}
return stubTree;
}
@Override
@Nullable
public StubTree getStubTree() {
ApplicationManager.getApplication().assertReadAccessAllowed();
if (Boolean.TRUE.equals(getUserData(BUILDING_STUB))) return null;
final StubTree derefd = derefStub();
if (derefd != null) return derefd;
if (getTreeElement() != null) return null;
if (!(getContentElementType() instanceof IStubFileElementType)) return null;
final VirtualFile vFile = getVirtualFile();
if (!(vFile instanceof VirtualFileWithId)) return null;
final PsiFile stubBindingRoot = getViewProvider().getStubBindingRoot();
if (stubBindingRoot != this) {
LOG.error(
"Attempted to create stubs for non-root file: "
+ this
+ ", stub binding root: "
+ stubBindingRoot);
return null;
}
ObjectStubTree tree = StubTreeLoader.getInstance().readOrBuild(getProject(), vFile, this);
if (!(tree instanceof StubTree)) return null;
StubTree stubHolder = (StubTree) tree;
synchronized (PsiLock.LOCK) {
if (getTreeElement() != null) return null;
final StubTree derefdOnLock = derefStub();
if (derefdOnLock != null) return derefdOnLock;
//noinspection unchecked
((StubBase) stubHolder.getRoot()).setPsi(this);
myStub = new SoftReference<StubTree>(stubHolder);
return stubHolder;
}
}
@Override
public void onContentReload() {
ApplicationManager.getApplication().assertWriteAccessAllowed();
synchronized (myStubLock) {
StubTree stubTree = dereference(myStub);
myStub = null;
if (stubTree != null) {
//noinspection unchecked
((PsiFileStubImpl) stubTree.getRoot()).clearPsi("cls onContentReload");
}
}
ClsPackageStatementImpl packageStatement = new ClsPackageStatementImpl(this);
synchronized (myMirrorLock) {
putUserData(CLS_DOCUMENT_LINK_KEY, null);
myMirrorFileElement = null;
myPackageStatement = packageStatement;
}
myLanguageLevel = null;
}
@Nullable
public StubElement getStub() {
StubTree stubHolder = getStubTree();
return stubHolder != null ? stubHolder.getRoot() : null;
}