public void Visit(AdditionExpression obj)
{
_sb.Append("(");
obj.Left.Accept(this);
_sb.Append(" + ");
obj.Right.Accept(this);
_sb.Append(")");
}
public void Test_using_the_print_visitor()
{
var exp = new AdditionExpression(
left: new DoubleExpression(1.0),
right: new AdditionExpression(
left: new DoubleExpression(2.0),
right: new DoubleExpression(3.0))
);
var printer = new ExpressionPrinter();
printer.Visit(exp);
string result = printer.ToString();
Assert.False(string.IsNullOrEmpty(result));
}