//список правил
public Grammar(NotTerminal startSymbol, List<Terminal> terminals, List<NotTerminal> notTerminals)
{
StartSymbol = startSymbol;
Terminals = terminals;
NotTerminals = notTerminals;
}
public void SetStart(NotTerminal nt)
{
StartSymbol = nt;
}
public Rule(NotTerminal notTerminal)
{
Left = notTerminal;
Right = new List<Symbol>();
}