internal ActiveLabel(GrammarSequence sequence, int index = 0)
{
_sequence = sequence;
_index = index;
var sequenceTerms = sequence.Terms;
CurrentTerm = sequenceTerms.Skip(index).First();
WillComplete = sequenceTerms.Count() == index + 1;
var currentTerminal = CurrentTerm as Terminal;
if (currentTerminal != null)
{
TerminalLabel = new TerminalLabel(currentTerminal, sequence);
}
if (WillComplete)
{
CompleteLabel = new CompleteLabel(_sequence);
}
else
{
NextInChain = new ActiveLabel(sequence, index + 1);
}
}
internal CompleteLabel(GrammarSequence sequence)
{
Sequence = sequence;
Parent = sequence.Parent;
}
public TerminalLabel(Terminal currentTerminal, GrammarSequence sequence)
: base(sequence)
{
Terminal = currentTerminal;
}