@NotNull
private Getter<FileElement> createTreeElementPointer(@NotNull FileElement treeElement) {
if (isKeepTreeElementByHardReference()) {
return treeElement;
}
return myManager.isBatchFilesProcessingMode()
? new PatchedWeakReference<FileElement>(treeElement)
: new SoftReference<FileElement>(treeElement);
}
protected boolean isPsiUpToDate(@NotNull VirtualFile vFile) {
final FileViewProvider provider = myManager.findViewProvider(vFile);
Language language = getLanguage();
if (provider == null || provider.getPsi(language) == this) { // provider == null in tests
return true;
}
Language baseLanguage = provider.getBaseLanguage();
return baseLanguage != language && provider.getPsi(baseLanguage) == this;
}
@Override
public boolean isValid() {
FileViewProvider provider = getViewProvider();
final VirtualFile vFile = provider.getVirtualFile();
if (!vFile.isValid()) return false;
if (!provider.isEventSystemEnabled()) return true; // "dummy" file
if (myManager.getProject().isDisposed()) return false;
return isPsiUpToDate(vFile);
}
@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;
}
}