System.Xml.Xsl.Runtime.XmlQueryRuntime.CreateXmlType C# (CSharp) Method

        private XmlQueryType CreateXmlType(XPathItem item) {
            if (item.IsNode) {
                // Rtf
                RtfNavigator rtf = item as RtfNavigator;
                if (rtf != null)
                    return XmlQueryTypeFactory.Node;

                // Node
                XPathNavigator nav = (XPathNavigator) item;
                switch (nav.NodeType) {
                    case XPathNodeType.Root:
                    case XPathNodeType.Element:
                        if (nav.XmlType == null)
                            return XmlQueryTypeFactory.Type(nav.NodeType, XmlQualifiedNameTest.New(nav.LocalName, nav.NamespaceURI), XmlSchemaComplexType.UntypedAnyType, false);

                        return XmlQueryTypeFactory.Type(nav.NodeType, XmlQualifiedNameTest.New(nav.LocalName, nav.NamespaceURI), nav.XmlType, nav.SchemaInfo.SchemaElement.IsNillable);

                    case XPathNodeType.Attribute:
                        if (nav.XmlType == null)
                            return XmlQueryTypeFactory.Type(nav.NodeType, XmlQualifiedNameTest.New(nav.LocalName, nav.NamespaceURI), DatatypeImplementation.UntypedAtomicType, false);

                        return XmlQueryTypeFactory.Type(nav.NodeType, XmlQualifiedNameTest.New(nav.LocalName, nav.NamespaceURI), nav.XmlType, false);
                }

                return XmlQueryTypeFactory.Type(nav.NodeType, XmlQualifiedNameTest.Wildcard, XmlSchemaComplexType.AnyType, false);
            }

            // Atomic value
            return XmlQueryTypeFactory.Type((XmlSchemaSimpleType)item.XmlType, true);
        }