}
public String toString() { return "[reduce " + position + "]"; }
- public Forest reduce(GSS.Phase.Node parent, GSS.Phase.Node onlychild, Forest rex) {
- Forest ret = reduce(parent, numPop-1, rex, onlychild, parent.phase());
+ public Forest reduce(GSS.Phase.Node parent) {
+ Forest rex = numPop==0 ? zero() : null;
+ Forest ret = reduce(parent, numPop-1, rex, null, parent.phase());
return ret;
}
+ public Forest reduce(GSS.Phase.Node parent, GSS.Phase.Node onlychild) {
+ int pos = numPop-1;
+ if (pos>=0) holder[pos] = parent.pending();
+ Forest rex = null;
+ if (pos==0) {
+ if (rex==null) {
+ System.arraycopy(holder, 0, position.holder, 0, holder.length);
+ rex = position.rewrite(parent.phase().getLocation());
+ }
+ }
+ return reduce(onlychild, pos-1, rex, null, parent.phase());
+ }
+
private Forest zero = null;
public Forest zero() {
if (zero != null) return zero;