private static Result doIF(object dat, evalIFType eval)
{
condBase cond = eval.cond.Item;
if (doCond(dat, cond))
{
return(doEval(dat, eval.then.Item));
}
else
{
return(doEval(dat, [email protected]));
}
}
private static bool doCond(object dat, condBase cond)
{
if (cond is condANDType)
{
condANDType and = (condANDType)cond;
foreach (condBase anditem in and.Items)
{
if (!doCond(dat, anditem))
{
return(false);
}
}
return(true);
}
else if (cond is condORType)
{
condORType or = (condORType)cond;
foreach (condBase oritem in or.Items)
{
if (doCond(dat, oritem))
{
return(true);
}
}
return(false);
}
else if (cond is condNOTType)
{
return(!doCond(dat, ((condNOTType)cond).Item));
}
else if (cond is condISNULLType)
{
condISNULLType isnull = (condISNULLType)cond;
Result resultisnull = doEval(dat, isnull.Item);
return(resultisnull.IsNull);
}
else if (cond is condEQType)
{
condEQType eq = (condEQType)cond;
string a = string.Format("{0}", doEval(dat, eq.Items[0]).Value);
string b = string.Format("{0}", doEval(dat, eq.Items[1]).Value);
return(string.Equals(a, b, StringComparison.CurrentCultureIgnoreCase));
}
else if (cond is condGEType)
{
condGEType x = (condGEType)cond;
return(compareVals(dat, x.Items[0], x.Items[1]) >= 0);
}
else if (cond is condGTType)
{
condGTType x = (condGTType)cond;
return(compareVals(dat, x.Items[0], x.Items[1]) > 0);
}
else if (cond is condLEType)
{
condLEType x = (condLEType)cond;
return(compareVals(dat, x.Items[0], x.Items[1]) <= 0);
}
else if (cond is condLTType)
{
condLTType x = (condLTType)cond;
return(compareVals(dat, x.Items[0], x.Items[1]) < 0);
}
else if (cond is condLIKEType)
{
condLIKEType x = (condLIKEType)cond;
return(compareLIKE(dat, x.Items[0], x.Items[1]));
}
throw new Exception(string.Format("Ошибка - неизвестный тип {0} в функции doCond", cond.GetType()));
}
