/** a node in the GSS */
final class StateNode
- implements Invokable<Pos, Result, Object>,
+ implements Invokable<Pos, ResultNode, Object>,
IntegerMappable,
GraphViz.ToGraphViz,
- Iterable<Result> {
+ Iterable<ResultNode> {
/** which GSS.Phase this StateNode belongs to */
public GSS.Phase phase() { return phase; }
- public Iterator<Result> iterator() { return results.iterator(); }
+ public Iterator<ResultNode> iterator() { return results.iterator(); }
public Parser.Table.State state() { return state; }
public int toInt() { return idx; }
// - be on the frontier or
// - have a non-doomed node closer to the frontier than themself
if (phase.isFrontier()) dead = false;
- else for(Result r : successors)
+ else for(ResultNode r : successors)
if (state.doomed) { if (r.usedByAnyNode()) { dead = false; break; } }
else { if (r.usedByNonDoomedNode()) { dead = false; break; } }
dead |= results.size()==0;
if (phase() != null && phase().hash != null)
phase().hash.remove(state, predPhase);
while(successors.size()>0)
- for(Result r : successors) {
+ for(ResultNode r : successors) {
successors.remove(r);
r.removePred(this);
break;
}
while(results.size()>0)
- for(Result r : results) {
+ for(ResultNode r : results) {
results.remove(r);
r.removeSucc(this);
break;
private final GSS.Phase predPhase;
private final Parser.Table.State state;
private boolean fromEmptyReduction;
- private FastSet<Result> results = new FastSet<Result>();
- private FastSet<Result> successors = new FastSet<Result>();
- //private HashSet<Result> results = new HashSet<Result>();
- //private HashSet<Result> successors = new HashSet<Result>();
+ private FastSet<ResultNode> results = new FastSet<ResultNode>();
+ private FastSet<ResultNode> successors = new FastSet<ResultNode>();
+ //private HashSet<ResultNode> results = new HashSet<ResultNode>();
+ //private HashSet<ResultNode> successors = new HashSet<ResultNode>();
- public final void invoke(Pos r, Result only, Object o) {
+ public final void invoke(Pos r, ResultNode only, Object o) {
boolean emptyProductions = only==null;
if (emptyProductions != (r.numPops()==0)) return;
if (r.numPops()!=0) reduce(r, r.numPops()-1, phase(), only);
}
}
- private void reduce(Pos r, int pos, GSS.Phase target, Result only) {
- for(Result res : results)
+ private void reduce(Pos r, int pos, GSS.Phase target, ResultNode only) {
+ for(ResultNode res : results)
if (only == null || res == only)
for(StateNode pred : res.getPreds())
reduce2(r, pos, target, pred, res.getForest());
}
StateNode(GSS.Phase phase, Forest f, Pos reduction, StateNode pred, State state, boolean fromEmptyReduction) {
- this(phase, new Result(f, reduction, pred), state, fromEmptyReduction);
+ this(phase, new ResultNode(f, reduction, pred), state, fromEmptyReduction);
}
- StateNode(GSS.Phase phase, Result pred, State state, boolean fromEmptyReduction) {
+ StateNode(GSS.Phase phase, ResultNode pred, State state, boolean fromEmptyReduction) {
this.phase = phase;
this.state = state;
this.fromEmptyReduction = fromEmptyReduction;
// Add/Remove Successors/Results //////////////////////////////////////////////////////////////////////////////
- public void removeSucc(Result succ) {
+ public void removeSucc(ResultNode succ) {
successors.remove(succ);
check();
}
- public void removeResult(Result result) {
+ public void removeResult(ResultNode result) {
results.remove(result);
check();
}
- public void addSucc(Result succ) {
+ public void addSucc(ResultNode succ) {
successors.add(succ);
}
public void addResult(Forest f, Pos reduction, StateNode pred) {
- for(Result r : results)
+ for(ResultNode r : results)
if (r.predecessorsContains(pred)) {
r.merge(f);
return;
}
- Result result = new Result(f, reduction, pred);
+ ResultNode result = new ResultNode(f, reduction, pred);
results.add(result);
result.addSucc(this);
if (!this.fromEmptyReduction) state.invokeReductions(phase().getToken(), this, result);
n.label = "state["+state.toInt()+"]";
n.shape = "rectangle";
boolean haspreds = false;
- for(Result r : results) n.edge(r, "");
+ for(ResultNode r : results) n.edge(r, "");
n.color = state.doomed ? "red" : "green";
((GraphViz.Group)phase().toGraphViz(gv)).add(n);
return n;