/**
* NewNLPair
* return a new NfaPair that matches a new line
* (\r\n?|\n)
*/
public static NfaPair NewNLPair(Spec spec)
{
NfaPair pair = NewNfaPair();
pair.end = NewNfa(spec); // newline accepting state
pair.start = NewNfa(spec); // new state with two epsilon edges
Nfa pstart = pair.start;
pstart.SetNext(NewNfa(spec));
Nfa pstartnext = pstart.GetNext();
pstartnext.SetEdge(Nfa.CCL);
pstartnext.SetCharSet(new CharSet());
pstartnext.GetCharSet().add('\n');
pstartnext.SetNext(pair.end); // accept '\n'
pstart.SetSib(NewNfa(spec));
Nfa pstartsib = pstart.GetSib();
pstartsib.SetEdge('\r');
pstartsib.SetNext(NewNfa(spec));
Nfa pstartsibnext = pstartsib.GetNext();
pstartsibnext.SetNext(null); // do NOT accept just '\r'
pstartsibnext.SetSib(NewNfa(spec));
pstartsibnext.GetSib().SetEdge('\n');
pstartsibnext.GetSib().SetNext(pair.end); // accept '\r\n'
return(pair);
}
/*
* Function: NewNfaPair
*/
public static NfaPair NewNfaPair()
{
NfaPair pair = new NfaPair();
return(pair);
}