if (start0.contains(p.owner()) && p.next()==null)
state.accept = true;
- // FIXME: how does right-nullability interact with follow restrictions?
- // all right-nullable rules get a reduction [Johnstone 2000]
if (p.isRightNullable(cache)) {
Walk.Follow wf = new Walk.Follow(top.empty(), p.owner(), all_elements, cache);
Reduction red = new Reduction(p);
- state.reductions.put(wf.walk(p.owner()), red);
+
+ Topology follow = wf.walk(p.owner());
+ if (p.owner() instanceof Sequence.RewritingSequence &&
+ (((Sequence.RewritingSequence)p.owner()).tag+"").equals("emailaddr")) {
+ System.out.println("follow before: " + new edu.berkeley.sbp.misc.CharToken.CharRange(follow));
+ }
+ for(Position p2 = p; p2 != null && p2.element() != null; p2 = p2.next())
+ follow = follow.intersect(new Walk.Follow(top.empty(), p2.element(), all_elements, cache).walk(p2.element()));
+ if (p.owner() instanceof Sequence.RewritingSequence &&
+ (((Sequence.RewritingSequence)p.owner()).tag+"").equals("emailaddr")) {
+ System.out.println("follow after: " + new edu.berkeley.sbp.misc.CharToken.CharRange(follow));
+ }
+ state.reductions.put(follow, red);
if (wf.includesEof()) state.eofReductions.add(red);
}