- pending = holder[pos] = result;
- if (pos==0) {
- System.arraycopy(holder, 0, r.holder, 0, holder.length);
- for(int i=0; i<r.pos; i++) if (r.holder[i]==null) throw new Error("realbad");
- Forest rex = null;
- if (r.pos==1) rex = singularReductions.get(pending, r);
- if (rex==null) {
- rex = r.rewrite(phase().getLocation());
- if (r.pos==1) singularReductions.put(pending, r, rex);
- }
- child.finish(r, rex, target, holder);
- } else {
- child.reduce(r, pos-1, target, holder, null, null);
- }
+ holder[pos] = result;
+ if (pos==0) child.finish(r, r.rewrite(phase().getLocation()), target);
+ else child.reduce(r, pos-1, target, null);