Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/codedom/CodeNamespaceImportCollection.cs

@@ -0,0 +1,215 @@
+//------------------------------------------------------------------------------
+// <copyright file="CodeNamespaceImportCollection.cs" company="Microsoft">
+// 
+// <OWNER>[....]</OWNER>
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.CodeDom {
+
+    using System.Diagnostics;
+    using System;
+    using System.Collections;
+    using System.Runtime.InteropServices;
+    using System.Globalization;
+    
+    /// <devdoc>
+    ///    <para>
+    ///       Manages a collection of <see cref='System.CodeDom.CodeNamespaceImport'/> objects.
+    ///    </para>
+    /// </devdoc>
+    [
+        ClassInterface(ClassInterfaceType.AutoDispatch),
+        ComVisible(true),
+        Serializable,
+    ]
+    public class CodeNamespaceImportCollection : IList {
+        private ArrayList data = new ArrayList();
+        private Hashtable keys = new Hashtable(StringComparer.OrdinalIgnoreCase);
+
+        /// <devdoc>
+        ///    <para>
+        ///       Indexer method that provides collection access.
+        ///    </para>
+        /// </devdoc>
+        public CodeNamespaceImport this[int index] {
+            get {
+                return ((CodeNamespaceImport)data[index]);
+            }
+            set {
+                data[index] = value;
+                SyncKeys();
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Gets or sets the number of namespaces in the collection.
+        ///    </para>
+        /// </devdoc>
+        public int Count {
+            get {
+                return data.Count;
+            }
+        }
+
+		/// <internalonly/>
+		bool IList.IsReadOnly
+		{
+			get
+			{
+				return false;
+			}
+		}
+
+		/// <internalonly/>
+		bool IList.IsFixedSize
+		{
+			get
+			{
+				return false;
+			}
+		}
+
+
+        /// <devdoc>
+        ///    <para>
+        ///       Adds a namespace import to the collection.
+        ///    </para>
+        /// </devdoc>
+        public void Add(CodeNamespaceImport value) {
+            if (!keys.ContainsKey(value.Namespace)) {
+                keys[value.Namespace] = value;
+                data.Add(value);
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Adds a set of <see cref='System.CodeDom.CodeNamespaceImport'/> objects to the collection.
+        ///    </para>
+        /// </devdoc>
+        public void AddRange(CodeNamespaceImport[] value) {
+            if (value == null) {
+                throw new ArgumentNullException("value");
+            }
+            foreach (CodeNamespaceImport c in value) {
+                Add(c);
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Clears the collection of members.
+        ///    </para>
+        /// </devdoc>
+        public void Clear() {
+            data.Clear();
+            keys.Clear();
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///    Makes the collection of keys synchronised with the data.
+        ///    </para>
+        /// </devdoc>
+        private void SyncKeys() {
+            keys = new Hashtable(StringComparer.OrdinalIgnoreCase);
+            foreach(CodeNamespaceImport c in this) {
+                keys[c.Namespace] = c;
+            }
+        }
+
+        /// <devdoc>
+        ///    <para>
+        ///       Gets an enumerator that enumerates the collection members.
+        ///    </para>
+        /// </devdoc>
+        public IEnumerator GetEnumerator() {
+            return data.GetEnumerator();
+        }
+
+        /// <internalonly/>
+        object IList.this[int index] {
+            get {
+                return this[index];
+            }
+            set {
+                this[index] = (CodeNamespaceImport)value;
+                SyncKeys();
+            }
+        }
+
+        /// <internalonly/>
+        int ICollection.Count {
+            get {
+                return Count;
+            }
+        }
+
+        /// <internalonly/>
+        bool ICollection.IsSynchronized {
+            get {
+                return false;
+            }
+        }
+
+        /// <internalonly/>
+        object ICollection.SyncRoot {
+            get {
+                return null;
+            }
+        }
+
+        /// <internalonly/>
+        void ICollection.CopyTo(Array array, int index) {
+            data.CopyTo(array, index);
+        }
+
+        /// <internalonly/>
+        IEnumerator IEnumerable.GetEnumerator() {
+            return GetEnumerator();
+        }
+
+        /// <internalonly/>
+        int IList.Add(object value) {
+            return data.Add((CodeNamespaceImport)value);
+        }
+
+        /// <internalonly/>
+        void IList.Clear() {
+            Clear();
+        }
+
+        /// <internalonly/>
+        bool IList.Contains(object value) {
+            return data.Contains(value);
+        }
+
+        /// <internalonly/>
+        int IList.IndexOf(object value) {
+            return data.IndexOf((CodeNamespaceImport)value);
+        }
+
+        /// <internalonly/>
+        void IList.Insert(int index, object value) {
+            data.Insert(index, (CodeNamespaceImport)value);
+            SyncKeys();
+        }
+
+        /// <internalonly/>
+        void IList.Remove(object value) {
+            data.Remove((CodeNamespaceImport)value);
+            SyncKeys();
+        }
+
+        /// <internalonly/>
+        void IList.RemoveAt(int index) {
+            data.RemoveAt(index);
+            SyncKeys();
+        }
+    }
+}
+
+