// -- private member functions
/** Check that symbol label is stutter insensitive,
* using nba and complement_nba */
public bool is_stutter_insensitive(NBA nba, NBA nba_complement, APElement label)
{
NBA stutter_closed_nba = NBAStutterClosure.stutter_closure(nba, label);
NBA product = NBA.product_automaton(stutter_closed_nba, nba_complement);
NBAAnalysis analysis_product = new NBAAnalysis(product);
bool empty = analysis_product.emptinessCheck();
// std::cerr << "NBA is " << (empty ? "empty" : "not empty") << std::endl;
return(empty);
}
public void convert(NBA nba, DRA dra_result, int limit) //=0
{
if (nba.size() == 0 || nba.getStartState() == null)
{
// the NBA is empty -> construct DRA that is empty
dra_result.constructEmpty();
return;
}
if (_options.dba_check && nba.isDeterministic())
{
DBA2DRA.dba2dra(nba, dra_result);
return;
}
if (_options.stutter_closure)
{
if (_stutter_information != null && !_stutter_information.isCompletelyInsensitive())
{
//std::cerr <<
//"WARNING: NBA might not be 100% stutter insensitive, applying stutter closure can create invalid results!" <<
//std::endl;
}
NBA nba_closed = NBAStutterClosure.stutter_closure(nba);
if (can_stutter())
{
convert_safra_stuttered(nba_closed, dra_result, limit);
return;
}
convert_safra(nba_closed, dra_result, limit);
return;
}
if (can_stutter())
{
convert_safra_stuttered(nba, dra_result, limit);
return;
}
convert_safra(nba, dra_result, limit);
return;
}