Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Data.SqlXml/System/Xml/Xsl/QIL/QilLoop.cs

@@ -0,0 +1,48 @@
+//------------------------------------------------------------------------------
+// <copyright file="QilLoop.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+//------------------------------------------------------------------------------
+using System;
+using System.Collections;
+using System.Diagnostics;
+using System.Xml.Schema;
+using System.Xml.Xsl;
+
+namespace System.Xml.Xsl.Qil {
+
+    /// <summary>
+    /// View over a Qil operators that introduce iterators (Loop, Filter, etc.).
+    /// </summary>
+    /// <remarks>
+    /// Don't construct QIL nodes directly; instead, use the <see cref="QilFactory">QilFactory</see>.
+    /// </remarks>
+    internal class QilLoop : QilBinary {
+
+        //-----------------------------------------------
+        // Constructor
+        //-----------------------------------------------
+
+        /// <summary>
+        /// Construct a new node
+        /// </summary>
+        public QilLoop(QilNodeType nodeType, QilNode variable, QilNode body) : base(nodeType, variable, body) {
+        }
+
+
+        //-----------------------------------------------
+        // QilLoop methods
+        //-----------------------------------------------
+
+        public QilIterator Variable {
+            get { return (QilIterator) Left; }
+            set { Left = value; }
+        }
+
+        public QilNode Body {
+            get { return Right; }
+            set { Right = value; }
+        }
+    }
+}