- public Node parent() { return parent; }
- public void addChild(Node child) { children.add(child); }
- public void removeChild(Node child) { children.remove(child); }
-
- public boolean usedByAnyNode() { return children.size() > 0; }
- public boolean usedByNonDoomedNode() {
- for(Node n : children)
- if (!n.state().doomed)
- return true;
- return false;
+ public Node pred() { return pred; }
+ public void addSucc(Node succ) {
+ successors.add(succ);
+ usedByNonDoomedNode += succ.state().doomed ? 0 : 1;
+ }
+ public void removeSucc(Node succ) {
+ if (!successors.contains(succ)) return;
+ successors.remove(succ);
+ usedByNonDoomedNode -= succ.state().doomed ? 0 : 1;
+ check();