/** the token immediately after this phase */
public final Token token;
+ boolean reducing = false;
+
/** currently this is necessary only for the code() hack -- it doesn't actually correspond to the input */
private final int pos;
private void newNode2(Node p, Node parent, Forest pending, Parser.Table.State state, boolean fromEmptyReduction, Phase start) {
p.holder.merge(pending);
if (p.parents().contains(parent)) return;
- p.parents().add(parent, true);
- if (p!=parent && !fromEmptyReduction) p.queueReductions(parent);
+ p.addParent(parent, fromEmptyReduction);
}
private void newNode3(Node parent, Forest pending, Parser.Table.State state, boolean fromEmptyReduction, Phase start) {
do {
}
- boolean reducing = false;
/** perform all reduction operations */
public void reduce() {
reducing = true;
//n.queueEmptyReductions();
//}
//error.append(" after: " +pendingReductions+ "\n");
- error.append(" candidate states:\n");
- for(Phase.Node n : hash.values()) {
+ //error.append(" candidate states:\n");
+ //for(Phase.Node n : hash.values()) {
//for(Sequence.Position p : n.state) error.append(" " + p + "\n");
//error.append(" --\n");
- for(Parser.Table.Reduction r : n.state.getReductions(token)) error.append(" " + r + "\n");
+ //for(Parser.Table.Reduction r : n.state.getReductions(token)) error.append(" " + r + "\n");
//error.append(" ==\n");
- }
+ //}
next.error = error.toString();
}
/** a node in the GSS */
public final class Node extends FastSet<Node> {
+ public void addParent(Node parent, boolean fromEmptyReduction) {
+ parents().add(parent, true);
+ if (this!=parent && !fromEmptyReduction) queueReductions(parent);
+ }
+
private Forest.Ref holder = null;
private boolean allqueued = false;
public final Phase phase = Phase.this;
public HashMap<Parser.Table.Reduction,Forest> cache() {
- return cache==null ? (cache = new HashMap<Parser.Table.Reduction,Forest>()) : cache; }
+ return cache==null ? (cache = new HashMap<Parser.Table.Reduction,Forest>()) : cache;
+ }
public Forest.Ref holder() { return holder==null ? (holder = new Forest.Ref()) : holder; }
public Forest pending() { return Phase.this.closed ? holder().resolve() : holder; }
public FastSet<Node> parents() { return this; }
// ultimate parent of the last pop, so we need to
// cache instances here as a way of avoiding
// recreating them.
-
- // currently we have this weird problem where we
- // have to do an individual reduct for each child
- // when the reduction length is one (ie the
- // children wind up being children of the newly
- // created node rather than part of the popped
- // sequence
if (r.numPop <= 0) continue;
if (r.numPop == 1) {
Forest ret = n.cache().get(r);
private static long code(Parser.Table.State state, Phase start) {
return (((long)state.idx) << 32) | (start==null ? 0 : start.pos);
}
- public boolean yak = false;
}