- private boolean kcache = false;
- private boolean keep = false;
- public boolean keep() {
- if (kcache) return keep;
- kcache = true;
- for(Forest<T> token : tokens) if (!token.valid()) return keep = false;
- return keep = creator==null || (creator.needs.size()==0 && creator.hates.size()==0);
- }
- public boolean keep(Iterable<Body<T>> h) {
- if (keep()) return true;
- for(Forest<T> token : tokens) if (!token.valid()) return false;
- int needs = 0;
- for(Body<T> b : h) {
- if (creator.hates.contains(b.creator) && b.keep(h)) return false;
- if (creator.needs.contains(b.creator) && b.keep(h)) needs--;
- }
- return needs <= -1 * creator.needs.size();
- }
-