void TransitiveClosureImplementation(Dictionary <PdfItem, object> objects, PdfObject pdfObject /*, ref int depth*/)
{
try
{
_nestingLevel++;
if (_nestingLevel >= 1000)
{
if (!_overflow.ContainsKey(pdfObject))
{
_overflow.Add(pdfObject, null);
}
return;
}
#if DEBUG_
//enterCount++;
if (enterCount == 5400)
{
GetType();
}
//if (!Object.ReferenceEquals(pdfObject.Owner, _document))
// GetType();
//////Debug.Assert(Object.ReferenceEquals(pdfObject27.Document, _document));
// if (item is PdfObject && ((PdfObject)item).ObjectID.ObjectNumber == 5)
// Debug.WriteLine("items: " + ((PdfObject)item).ObjectID.ToString());
//if (pdfObject.ObjectNumber == 5)
// GetType();
#endif
IEnumerable enumerable = null; //(IEnumerator)pdfObject;
PdfDictionary dict;
PdfArray array;
if ((dict = pdfObject as PdfDictionary) != null)
{
enumerable = dict.Elements.Values;
}
else if ((array = pdfObject as PdfArray) != null)
{
enumerable = array.Elements;
}
else
{
Debug.Assert(false, "Should not come here.");
}
if (enumerable != null)
{
foreach (PdfItem item in enumerable)
{
PdfReference iref = item as PdfReference;
if (iref != null)
{
// Is this an indirect reference to an object that does not exist?
//if (iref.Document == null)
//{
// Debug.WriteLine("Dead object detected: " + iref.ObjectID.ToString());
// PdfReference dead = DeadObject;
// iref.ObjectID = dead.ObjectID;
// iref.Document = _document;
// iref.SetObject(dead.Value);
// PdfDictionary dict = (PdfDictionary)dead.Value;
// dict.Elements["/DeadObjectCount"] =
// new PdfInteger(dict.Elements.GetInteger("/DeadObjectCount") + 1);
// iref = dead;
//}
if (!ReferenceEquals(iref.Document, _document))
{
GetType();
Debug.WriteLine(String.Format("Bad iref: {0}", iref.ObjectID.ToString()));
}
Debug.Assert(ReferenceEquals(iref.Document, _document) || iref.Document == null, "External object detected!");
#if DEBUG_
if (iref.ObjectID.ObjectNumber == 23)
{
GetType();
}
#endif
if (!objects.ContainsKey(iref))
{
PdfObject value = iref.Value;
// Ignore unreachable objets.
if (iref.Document != null)
{
// ... from trailer hack
if (value == null)
{
iref = ObjectTable[iref.ObjectID];
Debug.Assert(iref.Value != null);
value = iref.Value;
}
Debug.Assert(ReferenceEquals(iref.Document, _document));
objects.Add(iref, null);
//Debug.WriteLine(String.Format("objects.Add('{0}', null);", iref.ObjectID.ToString()));
if (value is PdfArray || value is PdfDictionary)
{
TransitiveClosureImplementation(objects, value /*, ref depth*/);
}
}
//else
//{
// objects2.Add(this[iref.ObjectID], null);
//}
}
}
else
{
PdfObject pdfObject28 = item as PdfObject;
//if (pdfObject28 != null)
// Debug.Assert(Object.ReferenceEquals(pdfObject28.Document, _document));
if (pdfObject28 != null && (pdfObject28 is PdfDictionary || pdfObject28 is PdfArray))
{
TransitiveClosureImplementation(objects, pdfObject28 /*, ref depth*/);
}
}
}
}
}
finally
{
_nestingLevel--;
}
}
public void Remove(PdfReference iref)
{
ObjectTable.Remove(iref.ObjectID);
}
