System.Xml.Xsl.Qil.QilTypeChecker.CheckDifference C# (CSharp) Method

        public XmlQueryType CheckDifference(QilBinary node) {
            CheckXmlType(node.Left, XmlQueryTypeFactory.NodeNotRtfS);
            CheckXmlType(node.Right, XmlQueryTypeFactory.NodeNotRtfS);
            return XmlQueryTypeFactory.AtMost(node.Left.XmlType, node.Left.XmlType.Cardinality);
        }
        

        public QilBinary Difference(QilNode left, QilNode right)
        {
            QilBinary n = new QilBinary(QilNodeType.Difference, left, right);

            n.XmlType = _typeCheck.CheckDifference(n);
            TraceNode(n);
            return(n);
        }