public static DescriptorInfo DescriptorInfo(HeapCell aCell, HeapStatistics aStats)
{
DescriptorInfo ret = null;
//
if (iAlgorithms.Count == 0)
{
PrepareAlgorithms(aStats);
}
//
foreach (DescriptorAlgorithmBase alg in iAlgorithms)
{
bool isDes = alg.IsDescriptor(aCell, out ret);
if (isDes && ret != null)
{
// We won't allow any algorithm to "recognise" the heap cell as a descriptor
// unless it can say that the length is > 0.
int length = ret.Length;
if (length > 0)
{
break;
}
else
{
ret = null;
}
}
}
return(ret);
}
internal virtual bool IsDescriptor(HeapCell aCell, out DescriptorInfo aInfo)
{
aInfo = null;
iCell = aCell;
//
bool couldBeDescriptor = (aCell.Symbol == null && RawItems.Count > 1);
if (couldBeDescriptor)
{
int payloadLength = PayloadLengthWhenCellIsDescriptor;
int possibleDescriptorLength = CalculatedDescriptorLength;
//
couldBeDescriptor = (possibleDescriptorLength <= payloadLength);
//
if (couldBeDescriptor)
{
// Need to make a descriptor info object just to get the type...
DescriptorInfo info = new DescriptorInfo(aCell);
couldBeDescriptor = (info.Type != HeapCell.TDescriptorType.EUnknown);
}
}
//
return(couldBeDescriptor);
}
