// reads the next thing in the document, xText and endElement are also included, but not attributes
private void ReadNext()
{
if (LastNode.Type == XmlNodeType.Attribute) // attributs are not supposed to be read by Read()
{
RemoveLastNode();
}
if (LastNode.Type == XmlNodeType.EndElement) // we remove the endElement, to avoid reread it, then we find the next element
{
RemoveLastNode();
ToNextSiblingOrPreviousNode();
}
else
{
INTERNAL_NodeType node = GetNode(LastChildList);
if (node.Type == XmlNodeType.None)// no more child, we return to the previous node
{
if (_nodeStack.Count > 0)
{
if (LastNode.Type == XmlNodeType.Element && !IsEmptyElement) // we now read the endElement of the LastNode element
{
AddNewNode(new INTERNAL_NodeType(LastNode, XmlNodeType.EndElement));
}
else
{
ToNextSiblingOrPreviousNode();
}
}
else
{
return; // end of document
}
}
else
{
AddNewNode(node);
}
}
}
// we try to read the next sibling if it exists, otherwise we return to the previous node
private bool ToNextSiblingOrPreviousNode()
{
RemoveLastNode();
if (MoveToNextNode()) // condition equivalent to stack count > 0
{
INTERNAL_NodeType node = GetNode(LastChildList);
if (node.Type != XmlNodeType.None) // find a sibling
{
AddNewNode(node);
return(true);
}
else if (LastNode.Type == XmlNodeType.Element)// find an end element
{
AddNewNode(new INTERNAL_NodeType(LastNode, XmlNodeType.EndElement));
return(true);
}
// otherwise, it means the end of another container than element, typically the end of XDocument
}
return(false); // end of the document
}
private void AddNewNode(INTERNAL_NodeType node)
{
_nodeStack.Add(node);
}
