public void Visit(AdditionExpression3 ae)
{
sb.Append("(");
ae.Left.Accept(this);
sb.Append("+");
ae.Right.Accept(this);
sb.Append(")");
}
public void Visit(AdditionExpression3 ae)
{
ae.Left.Accept(this);
var a = Result;
ae.Right.Accept(this);
var b = Result;
Result = a + b;
}
// change to Main to run.
public static void none()
{
var e = new AdditionExpression3(
left: new DoubleExpression3(1),
right: new AdditionExpression3(
left: new DoubleExpression3(2),
right: new DoubleExpression3(3)));
var ep = new ExpressionPrinter2();
ep.Visit(e);
Console.WriteLine(ep);
// Recursive calculation
var calc = new ExpressionCalculator();
calc.Visit(e);
Console.WriteLine($"{ep} = {calc.Result}");
}
