Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

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

@@ -0,0 +1,76 @@
+//------------------------------------------------------------------------------
+// <copyright file="QilBinary.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>
+//------------------------------------------------------------------------------
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace System.Xml.Xsl.Qil {
+
+    /// <summary>
+    /// View over a Qil operator having two children.
+    /// </summary>
+    /// <remarks>
+    /// Don't construct QIL nodes directly; instead, use the <see cref="QilFactory">QilFactory</see>.
+    /// </remarks>
+    internal class QilBinary : QilNode {
+        private QilNode left, right;
+
+
+        //-----------------------------------------------
+        // Constructor
+        //-----------------------------------------------
+
+        /// <summary>
+        /// Construct a new node
+        /// </summary>
+        public QilBinary(QilNodeType nodeType, QilNode left, QilNode right) : base(nodeType) {
+            this.left = left;
+            this.right = right;
+        }
+
+
+        //-----------------------------------------------
+        // IList<QilNode> methods -- override
+        //-----------------------------------------------
+
+        public override int Count {
+            get { return 2; }
+        }
+
+        public override QilNode this[int index] {
+            get {
+                switch (index) {
+                    case 0: return this.left;
+                    case 1: return this.right;
+                    default: throw new IndexOutOfRangeException();
+                }
+            }
+            set {
+                switch (index) {
+                    case 0: this.left = value; break;
+                    case 1: this.right = value; break;
+                    default: throw new IndexOutOfRangeException();
+                }
+            }
+        }
+
+
+        //-----------------------------------------------
+        // QilBinary methods
+        //-----------------------------------------------
+
+        public QilNode Left {
+            get { return this.left; }
+            set { this.left = value; }
+        }
+
+        public QilNode Right {
+            get { return this.right; }
+            set { this.right = value; }
+        }
+    }
+}