/// <summary>
/// Perform validation on operands passed to a function
/// </summary>
private ErrorValueOperand MarshalArguments(FunctionInfo info, IOperand[] ops)
{
FormulaFunctionAttribute attr = info.FunctionAttribute;
for (int i = 0; i <= ops.Length - 1; i++)
{
IOperand op = ops[i];
// We don't want invalid references
if (IsInvalidReference(op))
{
return(new ErrorValueOperand(ErrorValueType.Ref));
}
ArgumentMarshalResult result = attr.MarshalArgument(i, op);
if (result.Success == false)
{
return((ErrorValueOperand)result.Result);
}
ops[i] = result.Result;
}
return(null);
}
internal bool IsValidArgumentCount(string functionName, int argCount)
{
FunctionInfo info = GetFunctionInfo(functionName);
FormulaFunctionAttribute attr = info.FunctionAttribute;
return(attr.IsValidMinArgCount(argCount) & attr.IsValidMaxArgCount(argCount));
}
public FunctionInfo(FormulaFunctionCall target, FormulaFunctionAttribute attr)
{
FunctionTarget = target;
FunctionAttribute = attr;
string targetName = target.Method.Name;
if (attr.Names != null && attr.Names.Length > 0)
{
int addlNamesLen = attr.Names.Length;
Names = new string[addlNamesLen + 1];
Array.Copy(attr.Names, 0, Names, 1, addlNamesLen);
}
else
{
Names = new string[1];
}
Names[0] = targetName;
Volatile = attr.IsVolatile;
}
