public ValueEval Evaluate(ValueEval[] args, OperationEvaluationContext ec)
{
int nIncomingArgs = args.Length;
if (nIncomingArgs < 1)
{
throw new Exception("function name argument missing");
}
ValueEval nameArg = args[0];
String functionName = string.Empty ;
if (nameArg is NameEval)
{
functionName = ((NameEval)nameArg).FunctionName;
}
else if (nameArg is NameXEval)
{
functionName = ec.GetWorkbook().ResolveNameXText(((NameXEval)nameArg).Ptg);
}
else
{
throw new Exception("First argument should be a NameEval, but got ("
+ nameArg.GetType().Name + ")");
}
FreeRefFunction targetFunc = ec.FindUserDefinedFunction(functionName);
if (targetFunc == null)
{
throw new NotImplementedException(functionName);
}
int nOutGoingArgs = nIncomingArgs - 1;
ValueEval[] outGoingArgs = new ValueEval[nOutGoingArgs];
Array.Copy(args, 1, outGoingArgs, 0, nOutGoingArgs);
return targetFunc.Evaluate(outGoingArgs, ec);
}
