public JSNodeChildEnumerator(JSNode node, JSNodeTraversalData traversalData, bool includeSelf)
{
TraversalData = traversalData;
Node = node;
IncludeSelf = includeSelf;
_Index = IncludeSelf ? -2 : -1;
_ArrayRecord = null;
_ArrayRecordState = default(JSNodeTraversalArrayRecordState);
_Current = null;
_CurrentName = null;
}
private void MoveNextArrayRecord(JSNodeTraversalArrayRecord arrayRecord)
{
_ArrayRecord = arrayRecord;
_ArrayRecordState = arrayRecord.StartEnumeration(Node);
}
public bool MoveNext()
{
_Current = null;
_CurrentName = null;
while (true)
{
if ((_ArrayRecord == null) || (_Index < 0))
{
_Index += 1;
}
if (_Index >= TraversalData.Records.Length)
{
return(false);
}
if (_Index < 0)
{
if (IncludeSelf)
{
_Current = Node;
_CurrentName = "Self";
return(true);
}
else
{
throw new InvalidOperationException("Enumerator error");
}
}
if (_ArrayRecord != null)
{
if (_ArrayRecord.MoveNext(ref _ArrayRecordState))
{
_Current = _ArrayRecordState.CurrentNode;
_CurrentName = _ArrayRecordState.CurrentName;
return(true);
}
else
{
_ArrayRecord = null;
}
}
else
{
var record = TraversalData.Records[_Index];
var elementRecord = record as JSNodeTraversalElementRecord;
if (elementRecord != null)
{
elementRecord.Get(Node, out _Current, out _CurrentName);
if (_Current != null)
{
return(true);
}
}
else
{
var arrayRecord = record as JSNodeTraversalArrayRecord;
if (arrayRecord != null)
{
_ArrayRecord = arrayRecord;
_ArrayRecordState = arrayRecord.StartEnumeration(Node);
}
else
{
throw new InvalidDataException("Unrecognized record type");
}
}
}
}
}
