internal Nfa.Nfa BuildNfa()
{
Nfa.Nfa[] alt_nfa = chains.Select(it => RegexChainTraits.BuildNfa(it)).ToArray();
if (alt_nfa.Length == 1)
{
return(alt_nfa.Single());
}
else
{
var nfa = new Nfa.Nfa();
alt_nfa.ForEach(it => nfa.StartNode.ConnectTo(it.StartNode, NfaEdge.CreateEmpty()));
// accepting nodes have no outgoing edges
mergeNodes(alt_nfa.Select(it => it.Accepting()).Flatten().Where(it => !it.ConnectedTo.Any()).ToArray());
return(nfa);
}
}
public override string ToString()
{
return(chains.Select(it => RegexChainTraits.ToString(it)).Join("|"));
}
internal AltRegex ToCaseComparison(StringCaseComparison caseComp)
{
return(new AltRegex(chains.Select(it => RegexChainTraits.ToCaseComparison(it, caseComp))));
}
