Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Xml / System / Xml / NameTable.cs / 1 / NameTable.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System; namespace System.Xml { ////// /// public class NameTable : XmlNameTable { // // Private types // class Entry { internal string str; internal int hashCode; internal Entry next; internal Entry( string str, int hashCode, Entry next ) { this.str = str; this.hashCode = hashCode; this.next = next; } } // // Fields // Entry[] entries; int count; int mask; int hashCodeRandomizer; // // Constructor // ////// XmlNameTable implemented as a simple hash table. /// ////// /// Public constructor. /// public NameTable() { mask = 31; entries = new Entry[mask+1]; hashCodeRandomizer = Environment.TickCount; } // // XmlNameTable public methods // ////// /// Add the given string to the NameTable or return /// the existing string if it is already in the NameTable. /// public override string Add( string key ) { if ( key == null ) { throw new ArgumentNullException( "key" ); } int len = key.Length; if ( len == 0 ) { return string.Empty; } int hashCode = len + hashCodeRandomizer; // use key.Length to eliminate the rangecheck for ( int i = 0; i < key.Length; i++ ) { hashCode += ( hashCode << 7 ) ^ key[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && e.str.Equals( key ) ) { return e.str; } } return AddEntry( key, hashCode ); } ////// /// Add the given string to the NameTable or return /// the existing string if it is already in the NameTable. /// public override string Add( char[] key, int start, int len ) { if ( len == 0 ) { return string.Empty; } int hashCode = len + hashCodeRandomizer; hashCode += ( hashCode << 7 ) ^ key[start]; // this will throw IndexOutOfRangeException in case the start index is invalid int end = start+len; for ( int i = start + 1; i < end; i++) { hashCode += ( hashCode << 7 ) ^ key[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && TextEquals( e.str, key, start ) ) { return e.str; } } return AddEntry( new string( key, start, len ), hashCode ); } ////// /// Find the matching string in the NameTable. /// public override string Get( string value ) { if ( value == null ) { throw new ArgumentNullException("value"); } if ( value.Length == 0 ) { return string.Empty; } int len = value.Length + hashCodeRandomizer; int hashCode = len; // use value.Length to eliminate the rangecheck for ( int i = 0; i < value.Length; i++ ) { hashCode += ( hashCode << 7 ) ^ value[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && e.str.Equals( value ) ) { return e.str; } } return null; } ////// /// Find the matching string atom given a range of /// characters. /// public override string Get( char[] key, int start, int len ) { if ( len == 0 ) { return string.Empty; } int hashCode = len + hashCodeRandomizer; hashCode += ( hashCode << 7 ) ^ key[start]; // this will throw IndexOutOfRangeException in case the start index is invalid int end = start+len; for ( int i = start + 1; i < end; i++) { hashCode += ( hashCode << 7 ) ^ key[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && TextEquals( e.str, key, start ) ) { return e.str; } } return null; } // // Private methods // private string AddEntry( string str, int hashCode ) { int index = hashCode & mask; Entry e = new Entry( str, hashCode, entries[index] ); entries[index] = e; if ( count++ == mask ) { Grow(); } return e.str; } private void Grow() { int newMask = mask * 2 + 1; Entry[] oldEntries = entries; Entry[] newEntries = new Entry[newMask+1]; // use oldEntries.Length to eliminate the rangecheck for ( int i = 0; i < oldEntries.Length; i++ ) { Entry e = oldEntries[i]; while ( e != null ) { int newIndex = e.hashCode & newMask; Entry tmp = e.next; e.next = newEntries[newIndex]; newEntries[newIndex] = e; e = tmp; } } entries = newEntries; mask = newMask; } private static bool TextEquals( string array, char[] text, int start ) { // use array.Length to eliminate the rangecheck for ( int i = 0; i < array.Length; i++ ) { if ( array[i] != text[start+i] ) { return false; } } return true; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System; namespace System.Xml { ////// /// public class NameTable : XmlNameTable { // // Private types // class Entry { internal string str; internal int hashCode; internal Entry next; internal Entry( string str, int hashCode, Entry next ) { this.str = str; this.hashCode = hashCode; this.next = next; } } // // Fields // Entry[] entries; int count; int mask; int hashCodeRandomizer; // // Constructor // ////// XmlNameTable implemented as a simple hash table. /// ////// /// Public constructor. /// public NameTable() { mask = 31; entries = new Entry[mask+1]; hashCodeRandomizer = Environment.TickCount; } // // XmlNameTable public methods // ////// /// Add the given string to the NameTable or return /// the existing string if it is already in the NameTable. /// public override string Add( string key ) { if ( key == null ) { throw new ArgumentNullException( "key" ); } int len = key.Length; if ( len == 0 ) { return string.Empty; } int hashCode = len + hashCodeRandomizer; // use key.Length to eliminate the rangecheck for ( int i = 0; i < key.Length; i++ ) { hashCode += ( hashCode << 7 ) ^ key[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && e.str.Equals( key ) ) { return e.str; } } return AddEntry( key, hashCode ); } ////// /// Add the given string to the NameTable or return /// the existing string if it is already in the NameTable. /// public override string Add( char[] key, int start, int len ) { if ( len == 0 ) { return string.Empty; } int hashCode = len + hashCodeRandomizer; hashCode += ( hashCode << 7 ) ^ key[start]; // this will throw IndexOutOfRangeException in case the start index is invalid int end = start+len; for ( int i = start + 1; i < end; i++) { hashCode += ( hashCode << 7 ) ^ key[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && TextEquals( e.str, key, start ) ) { return e.str; } } return AddEntry( new string( key, start, len ), hashCode ); } ////// /// Find the matching string in the NameTable. /// public override string Get( string value ) { if ( value == null ) { throw new ArgumentNullException("value"); } if ( value.Length == 0 ) { return string.Empty; } int len = value.Length + hashCodeRandomizer; int hashCode = len; // use value.Length to eliminate the rangecheck for ( int i = 0; i < value.Length; i++ ) { hashCode += ( hashCode << 7 ) ^ value[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && e.str.Equals( value ) ) { return e.str; } } return null; } ////// /// Find the matching string atom given a range of /// characters. /// public override string Get( char[] key, int start, int len ) { if ( len == 0 ) { return string.Empty; } int hashCode = len + hashCodeRandomizer; hashCode += ( hashCode << 7 ) ^ key[start]; // this will throw IndexOutOfRangeException in case the start index is invalid int end = start+len; for ( int i = start + 1; i < end; i++) { hashCode += ( hashCode << 7 ) ^ key[i]; } // mix it a bit more hashCode -= hashCode >> 17; hashCode -= hashCode >> 11; hashCode -= hashCode >> 5; for ( Entry e = entries[hashCode & mask]; e != null; e = e.next ) { if ( e.hashCode == hashCode && TextEquals( e.str, key, start ) ) { return e.str; } } return null; } // // Private methods // private string AddEntry( string str, int hashCode ) { int index = hashCode & mask; Entry e = new Entry( str, hashCode, entries[index] ); entries[index] = e; if ( count++ == mask ) { Grow(); } return e.str; } private void Grow() { int newMask = mask * 2 + 1; Entry[] oldEntries = entries; Entry[] newEntries = new Entry[newMask+1]; // use oldEntries.Length to eliminate the rangecheck for ( int i = 0; i < oldEntries.Length; i++ ) { Entry e = oldEntries[i]; while ( e != null ) { int newIndex = e.hashCode & newMask; Entry tmp = e.next; e.next = newEntries[newIndex]; newEntries[newIndex] = e; e = tmp; } } entries = newEntries; mask = newMask; } private static bool TextEquals( string array, char[] text, int start ) { // use array.Length to eliminate the rangecheck for ( int i = 0; i < array.Length; i++ ) { if ( array[i] != text[start+i] ) { return false; } } return true; } } } // 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
- BigInt.cs
- LinearGradientBrush.cs
- BitmapEffectGroup.cs
- SuppressMessageAttribute.cs
- WorkflowWebService.cs
- PropVariant.cs
- Matrix3D.cs
- ToolStripCustomTypeDescriptor.cs
- WebPartManager.cs
- _HeaderInfo.cs
- WindowsEditBox.cs
- GraphicsPath.cs
- TemplateAction.cs
- ClaimTypeElementCollection.cs
- AccessibleObject.cs
- HtmlGenericControl.cs
- RootNamespaceAttribute.cs
- PersonalizationAdministration.cs
- ControlEvent.cs
- ApplicationCommands.cs
- NullableFloatMinMaxAggregationOperator.cs
- DataProtection.cs
- FirstMatchCodeGroup.cs
- Assert.cs
- Normalization.cs
- ConfigurationSectionCollection.cs
- MemberHolder.cs
- TransactionOptions.cs
- LinkButton.cs
- XmlWriter.cs
- Evidence.cs
- ASCIIEncoding.cs
- Helpers.cs
- EventInfo.cs
- TemplateContainer.cs
- DataGridViewAutoSizeColumnsModeEventArgs.cs
- login.cs
- DSASignatureFormatter.cs
- WSFederationHttpBinding.cs
- SystemIPInterfaceStatistics.cs
- HtmlForm.cs
- SecurityTokenInclusionMode.cs
- List.cs
- ByteAnimationBase.cs
- PageSettings.cs
- Drawing.cs
- OdbcConnectionOpen.cs
- ToolStripDropDownDesigner.cs
- ProfileService.cs
- ContainerParagraph.cs
- RootBuilder.cs
- DetailsViewInsertEventArgs.cs
- PropertyItem.cs
- SessionSwitchEventArgs.cs
- IisTraceWebEventProvider.cs
- AllMembershipCondition.cs
- MonitoringDescriptionAttribute.cs
- ExcludeFromCodeCoverageAttribute.cs
- InProcStateClientManager.cs
- LightweightCodeGenerator.cs
- AxisAngleRotation3D.cs
- MediaPlayerState.cs
- MediaScriptCommandRoutedEventArgs.cs
- ExpressionDumper.cs
- CompilationUnit.cs
- CryptoApi.cs
- XXXOnTypeBuilderInstantiation.cs
- Grammar.cs
- TabRenderer.cs
- ImageCreator.cs
- Knowncolors.cs
- OrderPreservingSpoolingTask.cs
- WebSysDisplayNameAttribute.cs
- SchemaImporter.cs
- MediaContext.cs
- PreviousTrackingServiceAttribute.cs
- ISCIIEncoding.cs
- DotAtomReader.cs
- Image.cs
- ReferencedCollectionType.cs
- MenuItemBinding.cs
- BrowserCapabilitiesFactory.cs
- DataGridViewComboBoxColumn.cs
- HostUtils.cs
- CodeAttributeArgument.cs
- ClientRolePrincipal.cs
- ScrollableControl.cs
- OutputScopeManager.cs
- NullableLongMinMaxAggregationOperator.cs
- XmlAnyAttributeAttribute.cs
- SqlInternalConnectionTds.cs
- ToolCreatedEventArgs.cs
- HandledEventArgs.cs
- StringWriter.cs
- WindowsSysHeader.cs
- StorageComplexPropertyMapping.cs
- LoadItemsEventArgs.cs
- entitydatasourceentitysetnameconverter.cs
- login.cs
- SimpleMailWebEventProvider.cs