Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Xml / System / Xml / Core / ReadOnlyTernaryTree.cs / 1305376 / ReadOnlyTernaryTree.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System; using System.IO; using System.Diagnostics; namespace System.Xml { // Array index to indicate the meaning of the each byte. internal enum TernaryTreeByte {characterByte = 0, leftTree = 1, rightTree = 2, data = 3}; // // XSL HTML output method properties // // Keep the first four bits in [....], so that the element and attribute mask operation can be combined. internal enum ElementProperties : uint {DEFAULT = 0, URI_PARENT = 1, BOOL_PARENT = 2, NAME_PARENT = 4, EMPTY = 8, NO_ENTITIES = 16, HEAD = 32, BLOCK_WS = 64, HAS_NS = 128} internal enum AttributeProperties : uint {DEFAULT = 0, URI = 1, BOOLEAN = 2, NAME = 4} /** * TernaryTreeRO * ------------- * * Ternary tree implementation used to make fast dictionary lookups in pre-generated * ternary trees. * * Note: Only strings composed of ASCII characters can exist in the tree. */ ///internal class TernaryTreeReadOnly { byte [] nodeBuffer; //define the array positions /// public TernaryTreeReadOnly(byte [] nodeBuffer) { this.nodeBuffer = nodeBuffer; } /* --------------------------------------------------------------------------- findStringI() Find a Unicode string in the ternary tree and return the data byte it's mapped to. Find is case-insensitive. */ /// public byte FindCaseInsensitiveString(String stringToFind) { //Debug.Assert(wszFind != null && wszFind.Length != 0); int stringPos = 0, nodePos = 0; int charToFind, charInTheTree; byte [] node = nodeBuffer; charToFind = stringToFind[stringPos]; if (charToFind > 'z') return 0; // Ternary tree only stores ASCII strings if (charToFind >= 'a') charToFind -= ('a' - 'A'); // Normalize to upper case while (true) { int pos = nodePos * 4; charInTheTree = node[pos + (int)TernaryTreeByte.characterByte]; //Console.WriteLine("charToFind: {0},charInTheTree: {1}, nodePos: {2}", charToFind, charInTheTree, nodePos); if (charToFind < charInTheTree) { // If input character is less than the tree character, take the left branch if (node[pos + (int)TernaryTreeByte.leftTree] == 0x0) { break; } nodePos = nodePos + node[pos + (int)TernaryTreeByte.leftTree]; } else if (charToFind > charInTheTree) { // If input character is greater than the tree character, take the right branch if (node[pos + (int)TernaryTreeByte.rightTree] == 0x0) break; nodePos = nodePos + node[pos + (int)TernaryTreeByte.rightTree]; } else { // If input character is equal to the tree character, take the equal branch if (charToFind == 0) return node[pos + (int)TernaryTreeByte.data]; // The offset for the equal branch is always one ++nodePos; // Move to the next input character ++stringPos; if (stringPos == stringToFind.Length) { charToFind = 0; } else { charToFind = stringToFind[stringPos]; if (charToFind > 'z') return 0; // Ternary tree only stores ASCII strings if (charToFind >= 'a') charToFind -= ('a' - 'A'); // Normalize to upper case } } } // Return default return 0; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System; using System.IO; using System.Diagnostics; namespace System.Xml { // Array index to indicate the meaning of the each byte. internal enum TernaryTreeByte {characterByte = 0, leftTree = 1, rightTree = 2, data = 3}; // // XSL HTML output method properties // // Keep the first four bits in [....], so that the element and attribute mask operation can be combined. internal enum ElementProperties : uint {DEFAULT = 0, URI_PARENT = 1, BOOL_PARENT = 2, NAME_PARENT = 4, EMPTY = 8, NO_ENTITIES = 16, HEAD = 32, BLOCK_WS = 64, HAS_NS = 128} internal enum AttributeProperties : uint {DEFAULT = 0, URI = 1, BOOLEAN = 2, NAME = 4} /** * TernaryTreeRO * ------------- * * Ternary tree implementation used to make fast dictionary lookups in pre-generated * ternary trees. * * Note: Only strings composed of ASCII characters can exist in the tree. */ ///internal class TernaryTreeReadOnly { byte [] nodeBuffer; //define the array positions /// public TernaryTreeReadOnly(byte [] nodeBuffer) { this.nodeBuffer = nodeBuffer; } /* --------------------------------------------------------------------------- findStringI() Find a Unicode string in the ternary tree and return the data byte it's mapped to. Find is case-insensitive. */ /// public byte FindCaseInsensitiveString(String stringToFind) { //Debug.Assert(wszFind != null && wszFind.Length != 0); int stringPos = 0, nodePos = 0; int charToFind, charInTheTree; byte [] node = nodeBuffer; charToFind = stringToFind[stringPos]; if (charToFind > 'z') return 0; // Ternary tree only stores ASCII strings if (charToFind >= 'a') charToFind -= ('a' - 'A'); // Normalize to upper case while (true) { int pos = nodePos * 4; charInTheTree = node[pos + (int)TernaryTreeByte.characterByte]; //Console.WriteLine("charToFind: {0},charInTheTree: {1}, nodePos: {2}", charToFind, charInTheTree, nodePos); if (charToFind < charInTheTree) { // If input character is less than the tree character, take the left branch if (node[pos + (int)TernaryTreeByte.leftTree] == 0x0) { break; } nodePos = nodePos + node[pos + (int)TernaryTreeByte.leftTree]; } else if (charToFind > charInTheTree) { // If input character is greater than the tree character, take the right branch if (node[pos + (int)TernaryTreeByte.rightTree] == 0x0) break; nodePos = nodePos + node[pos + (int)TernaryTreeByte.rightTree]; } else { // If input character is equal to the tree character, take the equal branch if (charToFind == 0) return node[pos + (int)TernaryTreeByte.data]; // The offset for the equal branch is always one ++nodePos; // Move to the next input character ++stringPos; if (stringPos == stringToFind.Length) { charToFind = 0; } else { charToFind = stringToFind[stringPos]; if (charToFind > 'z') return 0; // Ternary tree only stores ASCII strings if (charToFind >= 'a') charToFind -= ('a' - 'A'); // Normalize to upper case } } } // Return default return 0; } } } // 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
- BufferModesCollection.cs
- UDPClient.cs
- ViewgenContext.cs
- XmlAttributeCollection.cs
- ImageSourceConverter.cs
- ChannelTraceRecord.cs
- RemoveStoryboard.cs
- AttachmentCollection.cs
- TextRangeAdaptor.cs
- DynamicExpression.cs
- InternalCache.cs
- SortedList.cs
- BitmapImage.cs
- LambdaCompiler.ControlFlow.cs
- TogglePattern.cs
- XmlAttributeOverrides.cs
- CollaborationHelperFunctions.cs
- ImportCatalogPart.cs
- NullPackagingPolicy.cs
- WindowsToolbarAsMenu.cs
- XmlWrappingWriter.cs
- GlyphRunDrawing.cs
- CollectionView.cs
- WindowsAuthenticationModule.cs
- TreeViewTemplateSelector.cs
- ReflectionUtil.cs
- GC.cs
- TreeNode.cs
- ChtmlTextWriter.cs
- WsatAdminException.cs
- BamlReader.cs
- XmlWriter.cs
- RangeValuePatternIdentifiers.cs
- HostingEnvironmentException.cs
- LoginAutoFormat.cs
- OdbcEnvironmentHandle.cs
- ConfigurationManagerHelper.cs
- ClientUtils.cs
- UdpChannelFactory.cs
- ObjectDesignerDataSourceView.cs
- X509Extension.cs
- Opcode.cs
- UTF7Encoding.cs
- Interop.cs
- HitTestResult.cs
- ColumnCollection.cs
- webeventbuffer.cs
- IdentityReference.cs
- ScrollProviderWrapper.cs
- ResourcePermissionBaseEntry.cs
- StaticExtension.cs
- ProtocolElementCollection.cs
- QuaternionAnimation.cs
- OptionalRstParameters.cs
- PackagingUtilities.cs
- SqlGenericUtil.cs
- ListParagraph.cs
- RenderData.cs
- SortedDictionary.cs
- OperationFormatStyle.cs
- AttachedPropertyMethodSelector.cs
- SwitchLevelAttribute.cs
- EncodingDataItem.cs
- ResourcesBuildProvider.cs
- RbTree.cs
- StructureChangedEventArgs.cs
- Code.cs
- DatePickerDateValidationErrorEventArgs.cs
- StreamGeometry.cs
- SimpleTypesSurrogate.cs
- LinqDataSourceDisposeEventArgs.cs
- DropShadowBitmapEffect.cs
- DesignerActionService.cs
- DBSqlParser.cs
- RegistryConfigurationProvider.cs
- ExpressionConverter.cs
- TypedRowHandler.cs
- IdnMapping.cs
- NameTable.cs
- DataContract.cs
- DiffuseMaterial.cs
- PropertyMapper.cs
- XPathSingletonIterator.cs
- MenuItemStyleCollection.cs
- AnnotationHelper.cs
- TypeConverterMarkupExtension.cs
- PropertyGrid.cs
- GridViewCancelEditEventArgs.cs
- DodSequenceMerge.cs
- ColorMap.cs
- CodeSubDirectoriesCollection.cs
- XmlIlGenerator.cs
- XLinq.cs
- LabelAutomationPeer.cs
- ListViewDeleteEventArgs.cs
- Pen.cs
- ItemsPanelTemplate.cs
- DataGridCaption.cs
- ValueSerializerAttribute.cs
- PersistenceTypeAttribute.cs