public Stream<C> batchWhile(Predicate<? super T> predicate) {
Iterator<T> it = stream.iterator();
return StreamUtils.stream(
new Iterator<C>() {
T value = (T) UNSET;
@Override
public boolean hasNext() {
return value != UNSET || it.hasNext();
}
@Override
public C next() {
C list = factory.get();
if (value != UNSET) list.add(value);
T value;
label:
while (it.hasNext()) {
value = it.next();
list.add(value);
if (!predicate.test(value)) {
value = (T) UNSET;
break label;
}
value = (T) UNSET;
}
return list;
}
})
.filter(l -> l.size() > 0);
}