Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Xml/System/Xml/Serialization/NameTable.cs

@@ -0,0 +1,82 @@
+//------------------------------------------------------------------------------
+// <copyright file="NameTable.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+// <owner current="true" primary="true">[....]</owner>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Xml.Serialization {
+
+    using System.Collections;
+
+    internal class NameKey {
+        string ns;
+        string name;
+
+        internal NameKey(string name, string ns) {
+            this.name = name;
+            this.ns = ns;
+        }
+
+        public override bool Equals(object other) {
+            if (!(other is NameKey)) return false;
+            NameKey key = (NameKey)other;
+            return name == key.name && ns == key.ns;
+        }
+
+        public override int GetHashCode() {
+            return (ns == null ? "<null>".GetHashCode() : ns.GetHashCode()) ^ (name == null ? 0 : name.GetHashCode());
+        }
+    }
+    internal interface INameScope {
+        object this[string name, string ns] {get; set;}
+    }
+    internal class NameTable : INameScope {
+        Hashtable table = new Hashtable();
+
+        internal void Add(XmlQualifiedName qname, object value) {
+            Add(qname.Name, qname.Namespace, value);
+        }
+
+        internal void Add(string name, string ns, object value) {
+            NameKey key = new NameKey(name, ns);
+            table.Add(key, value);
+        }
+
+        internal object this[XmlQualifiedName qname] {
+            get {
+                return table[new NameKey(qname.Name, qname.Namespace)];
+            }
+            set {
+                table[new NameKey(qname.Name, qname.Namespace)] = value;
+            }
+        }
+        internal object this[string name, string ns] {
+            get {
+                return table[new NameKey(name, ns)];
+            }
+            set {
+                table[new NameKey(name, ns)] = value;
+            }
+        }
+        object INameScope.this[string name, string ns] {
+            get {
+                return table[new NameKey(name, ns)];
+            }
+            set {
+                table[new NameKey(name, ns)] = value;
+            }
+        }
+
+        internal ICollection Values {
+            get { return table.Values; }
+        }
+
+        internal Array ToArray(Type type) {
+            Array a = Array.CreateInstance(type, table.Count);
+            table.Values.CopyTo(a, 0);
+            return a;
+        }
+    }
+}
+