// private static string BNF = @"<expr> ::= <val> <op> <val> | <val> | 1 | 2
//
//<op> ::= + | - | *
//
//<val> ::= N_m | N_s";
public void Start(Options options) {
CFGParser pars = new CFGParser();
var grammar = pars.readGrammarBNF(BNF);
long possibilities = CalcPossibilitiesOfDepth(grammar, 2);
System.Console.WriteLine(possibilities);
}
private void CreateTreeFromGrammar()
{
if (String.IsNullOrWhiteSpace(GrammarBNF.Value))
{
GrammarParameter.Value = CFGExpressionGrammar.Empty;
GrammarParameter.Hidden = true;
return;
}
CFGParser parser = new CFGParser();
CFGExpressionGrammar grammar = parser.readGrammarBNF(GrammarBNF.Value);
Grammar = grammar;
GrammarParameter.Hidden = false;
var operators = Parameters.OfType <IValueParameter>().Select(p => p.Value).OfType <IOperator>().Union(Operators).ToList();
foreach (var op in operators.OfType <ISymbolicExpressionTreeGrammarBasedOperator>())
{
op.SymbolicExpressionTreeGrammarParameter.Value = GrammarParameter.Value;
}
}