using IwbZero.Expr;

namespace IwbZero.ExprFunctions.Functions
{
    /// <summary>
    /// Format字符串
    /// </summary>
    public class FunFormatStr:IIwbFunction
    {
        public string Invoke(ExprObject exprObj)
        {
            string text = "";
            ExprObject child = exprObj.GetChild(0);
            if (child != null)
            {
                text = child.Expr;
                if (exprObj.ChildCount > 1)
                {
                    object[] array = new object[exprObj.ChildCount / 2];
                    for (int i = 2; i < exprObj.ChildCount; i++)
                    {
                        if (i % 2 == 0)
                        {
                            int num = i / 2 - 1;
                            array[num] = exprObj.GetChild(i).Expr;
                        }
                        
                        //int num = i / 2 - 1;
                        //if ((num + 1) * 2 == i)
                        //{
                        //    array[num] = exprObj.GetChild(i).Expr;
                        //}

                        
                    }
                    text = string.Format(text, array);
                }
            }
            return text;
        }
    }
}