WEP_V2.1.3/SourceCode/We.Engine/WeEngine.Runtime/Functions/FunIfElse.cs

using IwbZero.Expr;
using IwbZero.ToolCommon.StringModel;

namespace WeEngine.Functions
{
    public class FunIfElse: IFunction
    {
        public string Invoke(ExprObject exprObj)
        {
            var child = exprObj.GetChild(0);
            if (child.Expr.ValB())
            {
                var child2 = exprObj.GetChild(2);
                return ExprModule.Evaluate(child2.Expr);
            }

            ExprObject child3 = exprObj.GetChild(4), child4 = exprObj.GetChild(6);
            if (child4 == null)
            {
                return ExprModule.Evaluate(child3.Expr);
            }

            if(child3.Expr.ValB())
            {
                return ExprModule.Evaluate(child4.Expr);

            }
            return "TRUE";
        } 
        
    }

}