public void Insert(Int32 indexToInsert, T node)
{
if (indexToInsert < 0)
{
throw new IndexOutOfRangeException();
}
T me = (T)this;
if (Parent != null && Asn1Reader.GetRestrictedTags().Contains(me.Tag))
{
throw new InvalidOperationException();
}
node.Parent = this;
// if indexToInsert is greater than Children length, append node to the end.
Int32 newOffset;
Boolean insert;
if (indexToInsert >= _children.Count)
{
newOffset = me.Offset + me.TagLength;
insert = false;
}
else
{
newOffset = _children[indexToInsert].Offset;
insert = true;
}
Int32 offsetDifference = node.Offset - newOffset;
// update offsets for inserted node
updateOffsetByCaller(node, offsetDifference);
// update offset for all nodes below inserted node
updateOffsetByIndex(indexToInsert, node.TagLength);
if (insert)
{
_children.Insert(indexToInsert, node);
}
else
{
_children.Add(node);
}
// update binary copy.
Source.RawData.InsertRange(newOffset, node.GetRawData());
//
notifyLengthChanged(node.TagLength);
Source.RawData.ForceUpdate();
}