continue;
GrammarSymbol sym = conf.getSymbolAfterDot();
if (sym instanceof NonTerminal)
{
NonTerminal nt = (NonTerminal) sym;
for (Production rule = nt.definitions.start(); rule != null; rule = rule.next_definition)
{
Configuration new_conf = conf_set_factory.addConfiguration(rule, 0);
if (new_conf.addLookaheads(conf))
{