Exemplo n.º 1
0
        //---------------------------------------------------------------------

        public static string RunEstimate(System.Collections.ArrayList Exp)
        {
            try
            {
                int k = 0, a, b, res;
                while (Exp.Count > 1)
                {
                    if (!(("*".Equals(Exp[k])) || ("/".Equals(Exp[k])) || ("+".Equals(Exp[k])) || (("-".Equals(Exp[k])) || ("mod".Equals(Exp[k])))))
                    {
                        if ("m".Equals(Exp[k]) || ("p".Equals(Exp[k])))
                        {
                            a = int.Parse(Exp[k - 1].ToString());
                            if ("p".Equals(Exp[k]))
                            {
                                res = a;
                            }
                            else
                            {
                                res = int.Parse(MathLibrary.IABS(a).ToString());
                                if (MathLibrary._lastError.Length > 0)
                                {
                                    ShowMessege = true;
                                    expression  = MathLibrary._lastError;
                                    return(expression);
                                }
                            }
                            Exp.RemoveAt(k);
                            Exp.RemoveAt(k - 1);

                            Exp.Insert(k - 1, res.ToString());
                            k -= 1;
                        }
                        k++;
                    }
                    else
                    {
                        try
                        {
                            a = int.Parse(Exp[k - 2].ToString());
                            b = int.Parse(Exp[k - 1].ToString());
                        }
                        catch
                        {
                            ShowMessege = true;
                            expression  = "error 06";
                            return(expression);
                        }

                        switch (Exp[k].ToString())
                        {
                        case "+":
                            res = MathLibrary.Add(a, b);
                            if (MathLibrary._lastError.Length > 0)
                            {
                                ShowMessege            = true;
                                expression             = MathLibrary._lastError;
                                MathLibrary._lastError = "";
                                return(expression);
                            }
                            break;

                        case "-":
                            res = MathLibrary.Sub(a, b);
                            if (MathLibrary._lastError.Length > 0)
                            {
                                ShowMessege            = true;
                                expression             = MathLibrary._lastError;
                                MathLibrary._lastError = "";
                                return(expression);
                            }
                            break;

                        case "*":
                            res = MathLibrary.Mult(a, b);
                            if (MathLibrary._lastError.Length > 0)
                            {
                                ShowMessege            = true;
                                expression             = MathLibrary._lastError;
                                MathLibrary._lastError = "";
                                return(expression);
                            }
                            break;

                        case "/":
                            res = MathLibrary.Div(a, b);
                            if (MathLibrary._lastError.Length > 0)
                            {
                                ShowMessege            = true;
                                expression             = MathLibrary._lastError;
                                MathLibrary._lastError = "";
                                return(expression);
                            }
                            break;

                        case "mod":
                            res = MathLibrary.Mod(a, b);
                            if (MathLibrary._lastError.Length > 0)
                            {
                                ShowMessege            = true;
                                expression             = MathLibrary._lastError;
                                MathLibrary._lastError = "";
                                return(expression);
                            }
                            break;

                        default:
                            ShowMessege = true;
                            expression  = "error 03";
                            return(expression);
                        }
                        Exp.RemoveAt(k);
                        Exp.RemoveAt(k - 1);
                        Exp.RemoveAt(k - 2);
                        Exp.Insert(k - 2, res.ToString());
                        k -= 2;
                    }
                }
                return(Exp[0].ToString());
            }
            catch
            {
                ShowMessege = true;
                expression  = "error 03";
                return(expression);
            }
        }