private FinishedTriggersBitSet readFinishedBits(ValueState<BitSet> state) {
if (!isFinishedSetNeeded()) {
// If no trigger in the tree will ever have finished bits, then we don't need to read them.
// So that the code can be agnostic to that fact, we create a BitSet that is all 0 (not
// finished) for each trigger in the tree.
return FinishedTriggersBitSet.emptyWithCapacity(rootTrigger.getFirstIndexAfterSubtree());
}
BitSet bitSet = state.read();
return bitSet == null
? FinishedTriggersBitSet.emptyWithCapacity(rootTrigger.getFirstIndexAfterSubtree())
: FinishedTriggersBitSet.fromBitSet(bitSet);
}
