static void Main(string[] args)
{
var shapes = new List <IVisitable>
{
new Circle(0),
new Circle(2),
new Square(12),
new Circle(13),
new Square(4),
new Rectangle(2, 4)
};
var andrei = new Engineer();
var visitor = new AreaCalculatorVisitor();
visitor.AddSubscriber(andrei);
try
{
shapes.ForEach(shape => shape.Accept(visitor));
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Exception: {e.Message}");
}
}
static void Main(string[] args)
{
var shapes = new List <IVisitable>
{
new Circle(5),
new Circle(2),
new Rectangle(2, 3),
new Square(12),
new Circle(13),
new Square(4),
};
IVisitor visitor1 = new BlackboardDrawerVisitor();
try
{
shapes.ForEach(shape => shape.Accept(visitor1));
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Exception: {e.Message}");
}
IVisitor visitor2 = new PaperDrawerVisitor(30);
try
{
shapes.ForEach(shape => shape.Accept(visitor2));
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Exception: {e.Message}");
}
var visitor3 = new AreaCalculatorVisitor();
visitor3.AddSubscriber(new Engineer());
try
{
shapes.ForEach(shape => shape.Accept(visitor3));
}
catch (InvalidOperationException e)
{
Console.WriteLine($"Exception: {e.Message}");
}
}