@Nullable
private VirtualFileSystemEntry findChild(
@NotNull String name,
boolean doRefresh,
boolean ensureCanonicalName,
@NotNull NewVirtualFileSystem delegate) {
boolean ignoreCase = !delegate.isCaseSensitive();
Comparator comparator = getComparator(ignoreCase);
VirtualFileSystemEntry result = doFindChild(name, ensureCanonicalName, delegate, comparator);
if (result == NULL_VIRTUAL_FILE) {
result = doRefresh ? createAndFindChildWithEventFire(name, delegate) : null;
} else if (result != null
&& doRefresh
&& delegate.isDirectory(result) != result.isDirectory()) {
RefreshQueue.getInstance().refresh(false, false, null, result);
result = findChild(name, false, ensureCanonicalName, delegate);
}
if (result == null) {
addToAdoptedChildren(!delegate.isCaseSensitive(), name, comparator);
}
return result;
}
@Nullable
private VirtualFileSystemEntry findFileById(
int id, boolean cachedOnly, TIntArrayList visited, int mask) {
VirtualFileSystemEntry cached = myIdToDirCache.get(id);
if (cached != null) return cached;
if (visited != null
&& (visited.size() >= DEPTH_LIMIT || (mask & id) == id && visited.contains(id))) {
@NonNls
String sb =
"Dead loop detected in persistent FS (id=" + id + " cached-only=" + cachedOnly + "):";
for (int i = 0; i < visited.size(); i++) {
int _id = visited.get(i);
sb +=
"\n "
+ _id
+ " '"
+ getName(_id)
+ "' "
+ String.format("%02x", getFileAttributes(_id))
+ ' '
+ myIdToDirCache.containsKey(_id);
}
LOG.error(sb);
return null;
}
int parentId = getParent(id);
if (parentId >= id) {
if (visited == null) visited = new TIntArrayList(DEPTH_LIMIT);
}
if (visited != null) visited.add(id);
VirtualFileSystemEntry result;
if (parentId == 0) {
myRootsLock.readLock().lock();
try {
result = myRootsById.get(id);
} finally {
myRootsLock.readLock().unlock();
}
} else {
VirtualFileSystemEntry parentFile = findFileById(parentId, cachedOnly, visited, mask | id);
if (parentFile instanceof VirtualDirectoryImpl) {
result = ((VirtualDirectoryImpl) parentFile).findChildById(id, cachedOnly);
} else {
result = null;
}
}
if (result != null && result.isDirectory()) {
VirtualFileSystemEntry old = myIdToDirCache.put(id, result);
if (old != null) result = old;
}
return result;
}