public override void Visit(ExistsPredicate node)
{
// count select star expressions in predicate
var childVisitor = new ChildVisitor();
node.AcceptChildren(childVisitor);
expressionCounter += childVisitor.SelectStarExpressionCount;
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
var elementStructure = new ElementStructure();
elementStructure.AddElement(new ParkElement());
elementStructure.AddElement(new BasketballCourtElement());
IVisitor visitor1 = new ChildVisitor();
elementStructure.AcceptVisitor(visitor1);
IVisitor visitor2 = new DamaVisitor();
elementStructure.AcceptVisitor(visitor2);
Console.ReadLine();
}
