public static XPathNodeType GetXPNodeType(this XmlNode node)
{
// Simulating behavior of deleted virtual property XmlNode.XPNodeType by using the fact
// that each XmlNodeType has different NodeType property value
switch (node.NodeType)
{
case XmlNodeType.Attribute:
{
XmlAttribute xmlAttribute = node as XmlAttribute;
if (xmlAttribute != null)
{
return(xmlAttribute.IsNamespace() ? XPathNodeType.Namespace : XPathNodeType.Attribute);
}
else
{
goto default;
}
}
case XmlNodeType.CDATA:
case XmlNodeType.Text:
return(XPathNodeType.Text);
case XmlNodeType.Comment:
return(XPathNodeType.Comment);
case XmlNodeType.Document:
case XmlNodeType.DocumentFragment:
return(XPathNodeType.Root);
case XmlNodeType.Element:
return(XPathNodeType.Element);
case XmlNodeType.ProcessingInstruction:
return(XPathNodeType.ProcessingInstruction);
case XmlNodeType.SignificantWhitespace:
{
XPathNodeType xnt = XPathNodeType.SignificantWhitespace;
node.DecideXPNodeTypeForTextNodes(node, ref xnt);
return(xnt);
}
case XmlNodeType.Whitespace:
{
XPathNodeType xnt = XPathNodeType.Whitespace;
node.DecideXPNodeTypeForTextNodes(node, ref xnt);
return(xnt);
}
default:
return((XPathNodeType)(-1));
}
}
public static bool DecideXPNodeTypeForTextNodes(this XmlNode thisObj, XmlNode node, ref XPathNodeType xnt)
{
//returns true - if all siblings of the node are processed else returns false.
//The reference XPathNodeType argument being passed in is the watermark that
//changes according to the siblings nodetype and will contain the correct
//nodetype when it returns.
Debug.Assert(IsTextNode(node.NodeType) || (node.ParentNode != null && node.ParentNode.NodeType == XmlNodeType.EntityReference));
while (node != null)
{
switch (node.NodeType)
{
case XmlNodeType.Whitespace:
break;
case XmlNodeType.SignificantWhitespace:
xnt = XPathNodeType.SignificantWhitespace;
break;
case XmlNodeType.Text:
case XmlNodeType.CDATA:
xnt = XPathNodeType.Text;
return(false);
case XmlNodeType.EntityReference:
if (!thisObj.DecideXPNodeTypeForTextNodes(node.FirstChild, ref xnt))
{
return(false);
}
break;
default:
return(false);
}
node = node.NextSibling;
}
return(true);
}