+ public void reduce(GSS.Phase.Node parent) {
+ Forest[] holder = new Forest[position.pos];
+ if (position.pos==0) finish(parent, zero(), parent.phase(), holder);
+ else reduce(parent, position.pos-1, parent.phase(), holder);
+ }
+
+ public void reduce(GSS.Phase.Node parent, GSS.Phase.Node onlychild) {
+ Forest[] holder = new Forest[position.pos];
+ if (position.pos<=0) throw new Error("called wrong form of reduce()");
+ int pos = position.pos-1;
+ Forest old = holder[pos];
+ holder[pos] = parent.pending();
+ if (pos==0) {
+ System.arraycopy(holder, 0, position.holder, 0, holder.length);
+ finish(onlychild, position.rewrite(parent.phase().getLocation()), parent.phase(), holder);
+ } else {
+ reduce(onlychild, pos-1, parent.phase(), holder);
+ }
+ holder[pos] = old;
+ }
+