if (DEBUG_ANALYZER) System.out.println("charVocab is " + b.toString());
// remove stuff predicted by preceding alts and follow of block
removeCompetingPredictionSets(b, atom);
if (DEBUG_ANALYZER) System.out.println("charVocab after removal of prior alt lookahead " + b.toString());
// now remove element that is stated not to be in the set
b.clear(atom.getType());
return new Lookahead(b);
}
else {
return Lookahead.of(atom.getType());
}