prec = prec.insert("+", Integer.valueOf(2)) ;
ImmutableMap<Rule,Integer> rprec = new Tree23Map<Rule,Integer>() ;
rprec = rprec.insert(times,Integer.valueOf(1)) ;
rprec = rprec.insert(plus,Integer.valueOf(2)) ;
Grammar g = new Grammar("E'",mapper.rules.keySet(),assoc,prec,rprec) ;
return new AugmentedParseTableImpl(mapper,ParserGenerator.createParseTable(g));
}