Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / Util / ObjectSet.cs / 1 / ObjectSet.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- /* * ObjectSet class * * Copyright (c) 1999 Microsoft Corporation */ // Generics are causing perf regressions, so don't use them for now until we can figure // it out (VSWhidbey 463572) //#define USEGENERICSET namespace System.Web.Util { using System.Reflection; using System.Collections; using System.Collections.Generic; #if USEGENERICSET /* * Holds a set of unique objects of a specific type */ internal class ObjectSet: ICollection , ICollection { protected const int StartingCapacity = 8; private class EmptyEnumerator : IEnumerator { object IEnumerator.Current { get { return null; } } T IEnumerator .Current { get { return default(T); } } bool IEnumerator.MoveNext() { return false; } void IEnumerator.Reset() { } void IDisposable.Dispose() { } } private static EmptyEnumerator _emptyEnumerator = new EmptyEnumerator(); private Dictionary _objects; protected virtual Dictionary CreateDictionary() { return new Dictionary (StartingCapacity); } public void AddCollection(ICollection c) { foreach (T o in c) { Add(o); } } public void Add(T o) { if (_objects == null) { _objects = CreateDictionary(); } _objects[o] = null; } public bool Remove(T o) { if (_objects == null) return false; return _objects.Remove(o); } public bool Contains(T o) { if (_objects == null) return false; return _objects.ContainsKey(o); } bool ICollection .IsReadOnly { get { return true; } } public void Clear() { if (_objects != null) _objects.Clear(); } IEnumerator IEnumerable .GetEnumerator() { if (_objects == null) return _emptyEnumerator; return _objects.Keys.GetEnumerator(); } IEnumerator IEnumerable.GetEnumerator() { if (_objects == null) return _emptyEnumerator; return _objects.Keys.GetEnumerator(); } public int Count { get { if (_objects == null) return 0; return _objects.Keys.Count; } } void ICollection .CopyTo(T[] array, int index) { if (_objects != null) _objects.Keys.CopyTo(array, index); } bool ICollection.IsSynchronized { get { if (_objects == null) return true; return ((ICollection)_objects.Keys).IsSynchronized; } } object ICollection.SyncRoot { get { if (_objects == null) return this; return ((ICollection)_objects.Keys).SyncRoot; } } public void CopyTo(Array array, int index) { if (_objects != null) ((ICollection)_objects.Keys).CopyTo(array, index); } } internal class StringSet : ObjectSet { } internal class CaseInsensitiveStringSet : StringSet { protected override Dictionary CreateDictionary() { return new Dictionary (StartingCapacity, StringComparer.InvariantCultureIgnoreCase); } } internal class VirtualPathSet : ObjectSet { } internal class AssemblySet : ObjectSet { internal static AssemblySet Create(ICollection c) { AssemblySet objectSet = new AssemblySet(); objectSet.AddCollection(c); return objectSet; } } internal class BuildProviderSet : ObjectSet { } internal class ControlSet : ObjectSet { } #else /* * Holds a set of unique objects */ internal class ObjectSet: ICollection { private class EmptyEnumerator: IEnumerator { public object Current { get { return null; } } public bool MoveNext() { return false; } public void Reset() {} } private static EmptyEnumerator _emptyEnumerator = new EmptyEnumerator(); private IDictionary _objects; internal ObjectSet() {} // By default, it's case sensitive protected virtual bool CaseInsensitive { get { return false; } } public void Add(object o) { if (_objects == null) _objects = new System.Collections.Specialized.HybridDictionary(CaseInsensitive); _objects[o] = null; } public void AddCollection(ICollection c) { foreach (object o in c) { Add(o); } } public void Remove(object o) { if (_objects == null) return; _objects.Remove(o); } public bool Contains(object o) { if (_objects == null) return false; return _objects.Contains(o); } IEnumerator IEnumerable.GetEnumerator() { if (_objects == null) return _emptyEnumerator; return _objects.Keys.GetEnumerator(); } public int Count { get { if (_objects == null) return 0; return _objects.Keys.Count; } } bool ICollection.IsSynchronized { get { if (_objects == null) return true; return _objects.Keys.IsSynchronized; } } object ICollection.SyncRoot { get { if (_objects == null) return this; return _objects.Keys.SyncRoot; } } public void CopyTo(Array array, int index) { if (_objects != null) _objects.Keys.CopyTo(array, index); } } internal class StringSet: ObjectSet { internal StringSet() {} } internal class CaseInsensitiveStringSet: StringSet { protected override bool CaseInsensitive { get { return true; } } } internal class VirtualPathSet : ObjectSet { internal VirtualPathSet() { } } internal class AssemblySet : ObjectSet { internal AssemblySet() { } internal static AssemblySet Create(ICollection c) { AssemblySet objectSet = new AssemblySet(); objectSet.AddCollection(c); return objectSet; } } internal class BuildProviderSet : ObjectSet { internal BuildProviderSet() { } } internal class ControlSet : ObjectSet { internal ControlSet() { } } #endif }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- ToolStripPanel.cs
- BaseTemplateParser.cs
- SoapInteropTypes.cs
- EntityDataSourceValidationException.cs
- CalendarDataBindingHandler.cs
- ConsumerConnectionPointCollection.cs
- RowType.cs
- CommonProperties.cs
- XmlValueConverter.cs
- Error.cs
- DataGridCell.cs
- XmlAttributeProperties.cs
- DataGridAutomationPeer.cs
- KeyValueInternalCollection.cs
- AppDomainFactory.cs
- XmlAttributeAttribute.cs
- RegexMatch.cs
- PreProcessor.cs
- FrameworkTemplate.cs
- WebResponse.cs
- XmlLinkedNode.cs
- HybridWebProxyFinder.cs
- DesignerForm.cs
- OracleConnectionFactory.cs
- FrugalMap.cs
- NominalTypeEliminator.cs
- ErrorWrapper.cs
- SecurityUtils.cs
- WorkflowRuntimeBehavior.cs
- PowerModeChangedEventArgs.cs
- DBParameter.cs
- RemotingException.cs
- DrawingAttributeSerializer.cs
- FixedBufferAttribute.cs
- FactoryRecord.cs
- CodeComment.cs
- MediaTimeline.cs
- PersonalizablePropertyEntry.cs
- SlipBehavior.cs
- LocatorPart.cs
- LZCodec.cs
- DrawingCollection.cs
- DictionaryBase.cs
- RemotingConfigParser.cs
- XPathSelectionIterator.cs
- VisualStyleRenderer.cs
- InvalidTimeZoneException.cs
- DataGridDefaultColumnWidthTypeConverter.cs
- FirewallWrapper.cs
- LogLogRecordHeader.cs
- ListDataHelper.cs
- PropertyKey.cs
- SchemaImporter.cs
- CultureInfoConverter.cs
- HttpListenerPrefixCollection.cs
- RelatedPropertyManager.cs
- ServiceOperationWrapper.cs
- AsynchronousChannel.cs
- BlurEffect.cs
- InputMethod.cs
- TrustManager.cs
- ScrollChangedEventArgs.cs
- EntityDataSourceView.cs
- MenuBindingsEditorForm.cs
- TextTreeUndo.cs
- DebugHandleTracker.cs
- ToolStrip.cs
- AddInActivator.cs
- WebSysDisplayNameAttribute.cs
- ValidationHelper.cs
- DocumentScope.cs
- PropertyRef.cs
- BufferedOutputStream.cs
- RichTextBox.cs
- AssemblyResourceLoader.cs
- SystemIPGlobalProperties.cs
- RenderDataDrawingContext.cs
- IpcClientChannel.cs
- ChangePassword.cs
- DataGridViewRowsRemovedEventArgs.cs
- ListViewItem.cs
- Win32PrintDialog.cs
- Canvas.cs
- WpfXamlType.cs
- MenuItemCollection.cs
- XmlText.cs
- LongValidatorAttribute.cs
- DescriptionAttribute.cs
- HttpConfigurationSystem.cs
- Encoding.cs
- CheckableControlBaseAdapter.cs
- Brushes.cs
- SingleSelectRootGridEntry.cs
- GraphicsPath.cs
- ParserOptions.cs
- CounterCreationDataConverter.cs
- RichTextBox.cs
- DrawToolTipEventArgs.cs
- FreezableCollection.cs
- DrawingContextDrawingContextWalker.cs