protected Listener getListener(Container.Entry entry) {
URI key = entry.getUri();
if (cache.containsKey(key)) {
return cache.get(key);
} else {
Listener listener;
try (InputStream inputStream = entry.getInputStream()) {
ANTLRJavaParser.parse(new ANTLRInputStream(inputStream), listener = new Listener(entry));
} catch (IOException ignore) {
listener = null;
}
cache.put(key, listener);
return listener;
}
}
static {
// Early class loading
ANTLRJavaParser.parse(new ANTLRInputStream("class EarlyLoading{}"), new Listener(null));
}