public void Merge() {
Queue<SemiTagNode> openlist = new LinkedList<SemiTagNode>();
for (SemiTagNode n : allnodes) {
if (n.IsLowerIncomplete()) {
openlist.add(n);
}
}
while (!openlist.isEmpty()) {
SemiTagNode head = openlist.poll();
// merge to successors
for (SemiTagEdge oe : head.outegdes) {
SemiTagNode t = oe.target;
// if(t.IsComplete() || t.IsLowerIncomplete())
// throw new Error("the tag is
// illegal"+head.Value.getFiniteStrings()+"+++"+t.Value.getFiniteStrings());
SemiTagNode nn = new SemiTagNode();
nn.sigs.addAll(head.sigs);
nn.sigs.addAll(t.sigs);
nn.Value = head.Value.concatenate(t.Value);
nn.setStatus();
// set the relationship to predecessors;
for (SemiTagEdge ie : head.inegdes) {
SemiTagEdge nie = new SemiTagEdge(ie.source, nn, ie.methodsig);
ie.source.outegdes.remove(ie);
ie.source.outegdes.add(nie);
nn.inegdes.add(nie);
nn.inegdes.remove(ie);
}
// set the relationship to successors;
for (SemiTagEdge toe : t.outegdes) {
SemiTagEdge noe = new SemiTagEdge(nn, toe.target, toe.methodsig);
toe.target.inegdes.remove(toe);
toe.target.inegdes.add(noe);
nn.outegdes.add(noe);
nn.outegdes.remove(toe);
}
allnodes.add(nn);
if (heads.contains(head)) heads.add(nn);
if (tails.contains(t)) tails.add(nn);
if (!nn.IsComplete()) openlist.add(nn);
allnodes.remove(t);
heads.remove(t);
tails.remove(t);
// if(!nn.IsComplete())
// openlist.add(nn);
}
allnodes.remove(head);
heads.remove(head);
tails.remove(head);
}
}
public SemiTagTree clone() {
SemiTagTree newtree = new SemiTagTree();
Hashtable<SemiTagNode, SemiTagNode> dup = new Hashtable<SemiTagNode, SemiTagNode>();
for (SemiTagNode hn : allnodes) dup.put(hn, new SemiTagNode());
for (SemiTagNode hn : allnodes) {
SemiTagNode shadow = dup.get(hn);
for (SemiTagEdge p : hn.inegdes)
shadow.inegdes.add(new SemiTagEdge(dup.get(p.source), dup.get(p.target), p.methodsig));
for (SemiTagEdge s : hn.outegdes)
shadow.outegdes.add(new SemiTagEdge(dup.get(s.source), dup.get(s.target), s.methodsig));
shadow.Value = hn.Value.clone();
shadow.status = hn.status;
shadow.gene = hn.gene;
shadow.sigs = hn.sigs;
}
for (SemiTagNode hn : heads) newtree.heads.add(dup.get(hn));
for (SemiTagNode hn : tails) newtree.tails.add(dup.get(hn));
for (SemiTagNode hn : allnodes) newtree.allnodes.add(dup.get(hn));
return newtree;
}