private static Result doEval(object dat, evalBase eval)
{
if (eval is evalCALCType)
{
return(doCalc(dat, (evalCALCType)eval));
}
else if (eval is evalArrayType)
{
return(doValue(dat, (evalArrayType)eval));
}
else if (eval is evalDateType)
{
return(new Result(((evalDateType)eval).val));
}
else if (eval is evalNumberType)
{
return(new Result(((evalNumberType)eval).val));
}
else if (eval is evalStringType)
{
return(new Result(((evalStringType)eval).val));
}
else if (eval is evalBoolType)
{
return(new Result(((evalBoolType)eval).val));
}
else if (eval is evalIFType)
{
return(doIF(dat, (evalIFType)eval));
}
else if (eval is evalValueType)
{
return(doValue(dat, (evalValueType)eval));
}
else if (eval is evalSFormatType)
{
string sval = doFormat(dat, ((evalSFormatType)eval).val);
return(new Result(sval));
}
else
{
Result result = new Result(null);
result.Error = "#Unknown Operation";
return(result);
}
}
private static bool compareLIKE(object dat, evalBase val1, evalBase val2)
{
string a = "";
string b = "";
try
{
a = doEval(dat, val1).Value.ToString();
b = doEval(dat, val2).Value.ToString();
Regex rx = new Regex(b);
return(rx.IsMatch(a));
}
catch (Exception ex)
{
throw new Exception(string.Format("Ошибка - при сравнении {0} и {1} в функции compareLIKE", a, b), ex);
}
}
private static int compareVals(object dat, evalBase val1, evalBase val2)
{
object a = doEval(dat, val1).Value;
object b = doEval(dat, val2).Value;
if (a is DateTime && b is DateTime)
{
return(DateTime.Compare((DateTime)a, (DateTime)b));
}
else if (
(a is int || a is decimal || a is double || a is Single || a is float) &&
(b is int || b is decimal || b is double || b is Single || b is float))
{
return(Decimal.Compare(Convert.ToDecimal(a), Convert.ToDecimal(b)));
}
else if (a is string && b is string)
{
return(string.Compare((string)a, (string)b, true));
}
throw new Exception(string.Format("Ошибка - при сравнении {0} и {1} в функции comparevals", a, b));
}
private static Result doCalc(object dat, evalCALCType eval)
{
Result result = new Result(null);
evalBase a = eval.Items[0];
evalBase b = eval.Items[1];
Result r1 = doEval(dat, a);
if (r1.HasError)
{
return(r1);
}
Result r2 = doEval(dat, b);
if (r2.HasError)
{
return(r2);
}
switch (eval.oper)
{
case arOperEnum.add:
if (r1.TypeValue == TypeEnum.String || r2.TypeValue == TypeEnum.String)
{
result.Value = Convert.ToString(r1.Value) + Convert.ToString(r2.Value);
}
else if (r1.TypeValue == TypeEnum.Number && r2.TypeValue == TypeEnum.Number)
{
result.Value = Convert.ToDecimal(r1.Value) + Convert.ToDecimal(r2.Value);
}
else if (r1.TypeValue == TypeEnum.Date && r2.TypeValue == TypeEnum.Number)
{
DateTime dt = Convert.ToDateTime(r1.Value);
double days = Convert.ToDouble(r2.Value);
result.Value = dt.AddDays(days);
}
else
{
result.Value = null;
result.Error = "#ADD:Bad Types";
}
break;
case arOperEnum.sub:
if (r1.TypeValue == TypeEnum.Number && r2.TypeValue == TypeEnum.Number)
{
result.Value = Convert.ToDecimal(r1.Value) - Convert.ToDecimal(r2.Value);
}
else if (r1.TypeValue == TypeEnum.Date && r2.TypeValue == TypeEnum.Number)
{
DateTime dt = Convert.ToDateTime(r1.Value);
double days = Convert.ToDouble(r2.Value);
result.Value = dt.AddDays(-days);
}
else
{
result.Value = null;
result.Error = "#SUB:Bad Types";
}
break;
case arOperEnum.mul:
if (r1.TypeValue == TypeEnum.Number && r2.TypeValue == TypeEnum.Number)
{
result.Value = Convert.ToDecimal(r1.Value) * Convert.ToDecimal(r2.Value);
}
else
{
result.Value = null;
result.Error = "#MUL:Bad Types";
}
break;
case arOperEnum.div:
if (r1.TypeValue == TypeEnum.Number && r2.TypeValue == TypeEnum.Number &&
Convert.ToDecimal(r2.Value) != 0)
{
result.Value = Convert.ToDecimal(r1.Value) * Convert.ToDecimal(r2.Value);
}
else
{
result.Value = null;
result.Error = "#MUL:Bad Types";
}
break;
}
return(result);
}
