Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Xml / System / Xml / XPath / Internal / precedingsibling.cs / 1 / precedingsibling.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace MS.Internal.Xml.XPath { using System; using System.Xml; using System.Xml.XPath; using System.Diagnostics; using System.Collections.Generic; // This class can be rewritten much more efficient. // Algorithm could be like one for FollowingSibling: // - Build InputArrays: pares (first, sentinel) // -- Cash all input nodes as sentinel // -- Add firts node of its parent for each input node. // -- Sort these pares by first nodes. // - Advance algorithm will look like: // -- For each row in InputArays we will output first node + all its following nodes which are < sentinel // -- Before outputing each node in row #I we will check that it is < first node in row #I+1 // --- if true we actualy output it // --- if false, we hold with row #I and apply this algorith starting for row #I+1 // --- when we done with #I+1 we continue with row #I internal class PreSiblingQuery : CacheAxisQuery { public PreSiblingQuery(Query qyInput, string name, string prefix, XPathNodeType typeTest) : base (qyInput, name, prefix, typeTest) {} protected PreSiblingQuery(PreSiblingQuery other) : base(other) {} private bool NotVisited(XPathNavigator nav, ListparentStk){ XPathNavigator nav1 = nav.Clone(); nav1.MoveToParent(); for (int i = 0; i < parentStk.Count; i++) { if (nav1.IsSamePosition(parentStk[i])) { return false; } } parentStk.Add(nav1); return true; } public override object Evaluate(XPathNodeIterator context) { base.Evaluate(context); // Fill up base.outputBuffer List parentStk = new List (); Stack inputStk = new Stack (); while ((currentNode = qyInput.Advance()) != null) { inputStk.Push(currentNode.Clone()); } while (inputStk.Count != 0) { XPathNavigator input = inputStk.Pop(); if (input.NodeType == XPathNodeType.Attribute || input.NodeType == XPathNodeType.Namespace) { continue; } if (NotVisited(input, parentStk)) { XPathNavigator prev = input.Clone(); if (prev.MoveToParent()) { bool test = prev.MoveToFirstChild(); Debug.Assert(test, "We just moved to parent, how we can not have first child?"); while (!prev.IsSamePosition(input)) { if (matches(prev)) { Insert(outputBuffer, prev); } if (!prev.MoveToNext()) { Debug.Fail("We managed to miss sentinel node (input)"); break; } } } } } return this; } public override XPathNodeIterator Clone() { return new PreSiblingQuery(this); } public override QueryProps Properties { get { return base.Properties | QueryProps.Reverse; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- namespace MS.Internal.Xml.XPath { using System; using System.Xml; using System.Xml.XPath; using System.Diagnostics; using System.Collections.Generic; // This class can be rewritten much more efficient. // Algorithm could be like one for FollowingSibling: // - Build InputArrays: pares (first, sentinel) // -- Cash all input nodes as sentinel // -- Add firts node of its parent for each input node. // -- Sort these pares by first nodes. // - Advance algorithm will look like: // -- For each row in InputArays we will output first node + all its following nodes which are < sentinel // -- Before outputing each node in row #I we will check that it is < first node in row #I+1 // --- if true we actualy output it // --- if false, we hold with row #I and apply this algorith starting for row #I+1 // --- when we done with #I+1 we continue with row #I internal class PreSiblingQuery : CacheAxisQuery { public PreSiblingQuery(Query qyInput, string name, string prefix, XPathNodeType typeTest) : base (qyInput, name, prefix, typeTest) {} protected PreSiblingQuery(PreSiblingQuery other) : base(other) {} private bool NotVisited(XPathNavigator nav, ListparentStk){ XPathNavigator nav1 = nav.Clone(); nav1.MoveToParent(); for (int i = 0; i < parentStk.Count; i++) { if (nav1.IsSamePosition(parentStk[i])) { return false; } } parentStk.Add(nav1); return true; } public override object Evaluate(XPathNodeIterator context) { base.Evaluate(context); // Fill up base.outputBuffer List parentStk = new List (); Stack inputStk = new Stack (); while ((currentNode = qyInput.Advance()) != null) { inputStk.Push(currentNode.Clone()); } while (inputStk.Count != 0) { XPathNavigator input = inputStk.Pop(); if (input.NodeType == XPathNodeType.Attribute || input.NodeType == XPathNodeType.Namespace) { continue; } if (NotVisited(input, parentStk)) { XPathNavigator prev = input.Clone(); if (prev.MoveToParent()) { bool test = prev.MoveToFirstChild(); Debug.Assert(test, "We just moved to parent, how we can not have first child?"); while (!prev.IsSamePosition(input)) { if (matches(prev)) { Insert(outputBuffer, prev); } if (!prev.MoveToNext()) { Debug.Fail("We managed to miss sentinel node (input)"); break; } } } } } return this; } public override XPathNodeIterator Clone() { return new PreSiblingQuery(this); } public override QueryProps Properties { get { return base.Properties | QueryProps.Reverse; } } } } // 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
- Variable.cs
- XmlReflectionImporter.cs
- MouseGestureValueSerializer.cs
- ToolStripRenderEventArgs.cs
- RectAnimationUsingKeyFrames.cs
- SimpleType.cs
- XmlSchemaInclude.cs
- SlotInfo.cs
- CachedTypeface.cs
- ScalarType.cs
- ContractMapping.cs
- ManipulationDelta.cs
- ConnectionOrientedTransportChannelFactory.cs
- BaseResourcesBuildProvider.cs
- TrackingDataItem.cs
- TableLayoutRowStyleCollection.cs
- MessageRpc.cs
- Helper.cs
- UnsafeNativeMethodsCLR.cs
- DataBindingList.cs
- FacetDescriptionElement.cs
- TextHintingModeValidation.cs
- Pen.cs
- SvcFileManager.cs
- AnimatedTypeHelpers.cs
- ResXDataNode.cs
- ViewManager.cs
- QilGenerator.cs
- TdsParserSafeHandles.cs
- ExtensionQuery.cs
- SmiRequestExecutor.cs
- FillBehavior.cs
- DownloadProgressEventArgs.cs
- IResourceProvider.cs
- DesignColumnCollection.cs
- SqlDataSourceCommandEventArgs.cs
- TypeToken.cs
- SafeCryptoHandles.cs
- HttpCookieCollection.cs
- ElementMarkupObject.cs
- DbgUtil.cs
- DataSourceXmlSerializer.cs
- ProxyWebPartConnectionCollection.cs
- AuthStoreRoleProvider.cs
- DataFormats.cs
- TemplateBuilder.cs
- TaskExtensions.cs
- PropertyGridDesigner.cs
- JavaScriptSerializer.cs
- BuildManager.cs
- BitmapFrame.cs
- RelatedEnd.cs
- BindingCompleteEventArgs.cs
- clipboard.cs
- ListBase.cs
- UserControlBuildProvider.cs
- DesignSurfaceServiceContainer.cs
- BindingExpression.cs
- SimpleWorkerRequest.cs
- EntityParameter.cs
- BitmapEffectDrawingContextWalker.cs
- DesignSurface.cs
- XPathDocumentBuilder.cs
- InvalidateEvent.cs
- ConfigurationStrings.cs
- DesignerOptions.cs
- Drawing.cs
- CodeValidator.cs
- StyleHelper.cs
- DataGridViewAutoSizeColumnModeEventArgs.cs
- XmlDictionaryWriter.cs
- ParentUndoUnit.cs
- XmlCharCheckingWriter.cs
- ServerValidateEventArgs.cs
- CompositeFontInfo.cs
- ValueSerializerAttribute.cs
- AuthorizationRuleCollection.cs
- LowerCaseStringConverter.cs
- ResXFileRef.cs
- EventHandlersStore.cs
- PropertyDescriptor.cs
- EventWaitHandle.cs
- FixedSOMPageConstructor.cs
- AmbientProperties.cs
- Configuration.cs
- WindowsScrollBarBits.cs
- TextElementEnumerator.cs
- FileDetails.cs
- SystemIcmpV4Statistics.cs
- MdiWindowListItemConverter.cs
- AppDomain.cs
- DataView.cs
- ExpressionHelper.cs
- PolicyManager.cs
- Int32AnimationUsingKeyFrames.cs
- XmlObjectSerializerReadContext.cs
- ElementHostPropertyMap.cs
- NameTable.cs
- TableHeaderCell.cs
- PeerContact.cs