static void Main(string[] args)
{
var grammar = LoadGrammar.LoadFromFile(@"./examples/ex2.json").ToGrammar();
Console.WriteLine(grammar.ToString());
LeftRecursionResolver.ResolveIndirectRecursion(grammar);
LanguageUtils.RemoveLeftFactoring(grammar);
LanguageUtils.RemoveEPS(ref grammar);
Console.WriteLine(grammar.ToString());
var parser = new LL1Parser(grammar);
Console.WriteLine(parser.ProcessText("a + b cvcvx = ( b - c )"));
parser.PrintTree(@"./tree.gv");
}