C language interpreter-9 control structure of if

Do not doubt it. When it comes to the control structure, we will first think of if. The implementation should be as follows:

public class IfThen : ControlFlow    {        public Expression.ExpressionNode Condition;        public Block ThenClause        {            get { return Children.Count > 0 ? Children.First() as Block: null; }        }        public Block ElseClause        {            get { return Children.Count > 1 ? Children.Last() as Block: null; }        }

The runtime processing should be as follows:

public override void Run(Context ctx)        {            Debug.WriteLine("if(" + Condition.ToString() + ")");                        Expression.Operand.Operand condVal = Condition.Evaluate(this);            Debug.WriteLine("Condition=" + condVal.GetValue(this).ToString());            if (condVal.GetValue(this).AsInt != 0)            {                if (ThenClause != null)                {                    Debug.WriteLine("Then");                    ThenClause.Run(this);                }            }            else            {                if (ElseClause != null)                {                    Debug.WriteLine("Else");                    ElseClause.Run(this);                }            }        }

It looks quite simple.