Code:
/ FX-1434 / FX-1434 / 1.0 / 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
- AnnotationResourceCollection.cs
- ControlBuilder.cs
- ViewManagerAttribute.cs
- ReliableOutputConnection.cs
- ConnectionStringsExpressionBuilder.cs
- ApplicationInfo.cs
- HtmlInputButton.cs
- PrimaryKeyTypeConverter.cs
- OutputCacheSettings.cs
- BasicViewGenerator.cs
- DataServiceConfiguration.cs
- EditorBrowsableAttribute.cs
- ScriptControlManager.cs
- GuidelineSet.cs
- SqlProcedureAttribute.cs
- WebHttpDispatchOperationSelector.cs
- remotingproxy.cs
- HtmlInputImage.cs
- TableChangeProcessor.cs
- XmlSchemaComplexType.cs
- ChannelBinding.cs
- CodeThrowExceptionStatement.cs
- OperationCanceledException.cs
- DrawingCollection.cs
- SamlAttributeStatement.cs
- DataContractSet.cs
- BinaryReader.cs
- DetailsViewActionList.cs
- ParallelDesigner.cs
- SmtpMail.cs
- TypeConverterValueSerializer.cs
- SerTrace.cs
- MobilePage.cs
- FigureHelper.cs
- ProcessModuleCollection.cs
- ProfilePropertyNameValidator.cs
- TextTreeRootNode.cs
- Attributes.cs
- NeutralResourcesLanguageAttribute.cs
- XmlUrlResolver.cs
- ApplicationId.cs
- SpecularMaterial.cs
- Preprocessor.cs
- X509Certificate.cs
- CapabilitiesSection.cs
- QilXmlWriter.cs
- IsolatedStorageException.cs
- ChannelBinding.cs
- MessageDescription.cs
- TrackingStringDictionary.cs
- DisplayInformation.cs
- DataKeyCollection.cs
- ScaleTransform.cs
- Events.cs
- FieldBuilder.cs
- TypedTableBase.cs
- JournalEntry.cs
- Double.cs
- TextBoxRenderer.cs
- DataSourceIDConverter.cs
- ScriptResourceInfo.cs
- Transform3D.cs
- Model3DCollection.cs
- PropertyMapper.cs
- HttpModuleAction.cs
- SqlBulkCopyColumnMapping.cs
- Fonts.cs
- AttributeTable.cs
- RIPEMD160.cs
- FileDialogCustomPlacesCollection.cs
- SqlFacetAttribute.cs
- WebPartVerb.cs
- StartUpEventArgs.cs
- ExpandSegment.cs
- ObjectSecurity.cs
- WebHttpEndpointElement.cs
- SqlConnectionStringBuilder.cs
- StoreContentChangedEventArgs.cs
- PngBitmapEncoder.cs
- HtmlElementCollection.cs
- TemplateContentLoader.cs
- DataGridViewColumnEventArgs.cs
- SHA512.cs
- CultureInfo.cs
- TypeUsage.cs
- ConstructorBuilder.cs
- ExpressionEditor.cs
- JournalEntryStack.cs
- ErrorEventArgs.cs
- SiteMapPath.cs
- ClipboardData.cs
- Input.cs
- Selection.cs
- ShaderEffect.cs
- DefaultAsyncDataDispatcher.cs
- IconBitmapDecoder.cs
- UriTemplateClientFormatter.cs
- SchemaNotation.cs
- QueryResults.cs
- DocumentEventArgs.cs