Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / xsp / System / Web / Util / ObjectSet.cs / 1305376 / 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 } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- WindowsTooltip.cs
- SimpleHandlerFactory.cs
- SecurityPermission.cs
- Menu.cs
- ActionItem.cs
- XmlEnumAttribute.cs
- DmlSqlGenerator.cs
- MultiBinding.cs
- XmlSchemaDocumentation.cs
- SR.cs
- XmlSchemaSimpleTypeList.cs
- MouseCaptureWithinProperty.cs
- XmlSchemaSimpleTypeRestriction.cs
- _BasicClient.cs
- DetailsViewUpdatedEventArgs.cs
- PropertyMapper.cs
- ControlsConfig.cs
- WebContext.cs
- ValidateNames.cs
- ParameterBuilder.cs
- PeekCompletedEventArgs.cs
- OleAutBinder.cs
- TerminatorSinks.cs
- UInt32.cs
- ToolStripDropDownClosingEventArgs.cs
- CultureInfoConverter.cs
- DragDeltaEventArgs.cs
- PageThemeBuildProvider.cs
- WebSysDefaultValueAttribute.cs
- Rect.cs
- Renderer.cs
- PersonalizationAdministration.cs
- SoapIgnoreAttribute.cs
- LinqDataSourceStatusEventArgs.cs
- DATA_BLOB.cs
- XmlValidatingReaderImpl.cs
- MetaData.cs
- EmptyCollection.cs
- UserControl.cs
- ConfigXmlWhitespace.cs
- LayoutEditorPart.cs
- ExpressionCopier.cs
- EntityContainerEmitter.cs
- WebPartPersonalization.cs
- GenericsInstances.cs
- DocumentSequenceHighlightLayer.cs
- OutputCacheSection.cs
- DataBoundControlParameterTarget.cs
- UriTemplateEquivalenceComparer.cs
- SmiContext.cs
- CatalogZone.cs
- RegexCaptureCollection.cs
- XmlDataSourceDesigner.cs
- DataGridViewCellErrorTextNeededEventArgs.cs
- SamlAuthenticationStatement.cs
- SHA1Managed.cs
- BaseAsyncResult.cs
- EmptyCollection.cs
- SizeFConverter.cs
- ValueUtilsSmi.cs
- PaperSize.cs
- StringValidatorAttribute.cs
- EdmValidator.cs
- ApplyTemplatesAction.cs
- BooleanSwitch.cs
- MessageDesigner.cs
- GridItem.cs
- RemotingSurrogateSelector.cs
- VerificationException.cs
- SiblingIterators.cs
- OleDbInfoMessageEvent.cs
- MultipartContentParser.cs
- StatusBarItemAutomationPeer.cs
- EmptyStringExpandableObjectConverter.cs
- LocalBuilder.cs
- NamespaceInfo.cs
- ToolStripStatusLabel.cs
- XmlMtomReader.cs
- DbgUtil.cs
- SupportsPreviewControlAttribute.cs
- FontInfo.cs
- HyperLinkField.cs
- LinqDataSourceUpdateEventArgs.cs
- WorkflowInstance.cs
- IndicFontClient.cs
- CancellationHandler.cs
- InstanceKeyNotReadyException.cs
- SecurityIdentifierElementCollection.cs
- UnmanagedHandle.cs
- CallSite.cs
- DataGridViewCellStyleContentChangedEventArgs.cs
- XmlBinaryReaderSession.cs
- SqlEnums.cs
- CommandDesigner.cs
- SystemIcmpV6Statistics.cs
- FileDocument.cs
- odbcmetadatacollectionnames.cs
- SpnegoTokenProvider.cs
- Sql8ConformanceChecker.cs
- SevenBitStream.cs