Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / Xslt / KeyMatchBuilder.cs / 1305376 / KeyMatchBuilder.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System; using System.Diagnostics; using System.Collections; using System.Collections.Generic; using System.Xml; using System.Xml.XPath; using MS.Internal.Xml; using System.Xml.Xsl.XPath; using System.Xml.Xsl.Qil; namespace System.Xml.Xsl.Xslt { internal class KeyMatchBuilder : XPathBuilder, XPathPatternParser.IPatternBuilder { private int depth = 0; PathConvertor convertor; public KeyMatchBuilder(IXPathEnvironment env) : base(env) { convertor = new PathConvertor(env.Factory); } public override void StartBuild() { Debug.Assert(0 <= depth && depth <= 1, "this shouldn't happen"); if (depth == 0) { base.StartBuild(); } depth ++; } public override QilNode EndBuild(QilNode result) { depth --; Debug.Assert(0 <= depth && depth <= 1, "this shouldn't happen"); if (result == null) { // special door to clean builder state in exception handlers return base.EndBuild(result); } if (depth == 0) { Debug.Assert(base.numFixupLast == 0); Debug.Assert(base.numFixupPosition == 0); result = convertor.ConvertReletive2Absolute(result, base.fixupCurrent); result = base.EndBuild(result); } return result; } // -------------------------------------- GetPredicateBuilder() --------------------------------------- public virtual IXPathBuilderGetPredicateBuilder(QilNode ctx) { return this; } // This code depends on particula shapes that XPathBuilder generates. // It works only on pathes. // ToDo: We can do better here. internal class PathConvertor : QilReplaceVisitor { new XPathQilFactory f; QilNode fixup; public PathConvertor(XPathQilFactory f) : base (f.BaseFactory) { this.f = f; } public QilNode ConvertReletive2Absolute(QilNode node, QilNode fixup) { Debug.Assert(node != null); Debug.Assert(fixup != null); this.fixup = fixup; return this.Visit(node); } // transparantly passing through Union and DocOrder protected override QilNode Visit(QilNode n) { if ( n.NodeType == QilNodeType.Union || n.NodeType == QilNodeType.DocOrderDistinct || n.NodeType == QilNodeType.Filter || n.NodeType == QilNodeType.Loop ) { return base.Visit(n); } return n; } // Filers that travers Content being converted to global travers: // Filter($j= ... Filter($i = Content(fixup), ...)) -> Filter($j= ... Filter($i = Loop($j = DesendentOrSelf(Root(fixup)), Content($j), ...))) protected override QilNode VisitLoop(QilLoop n) { if (n.Variable.Binding.NodeType == QilNodeType.Root || n.Variable.Binding.NodeType == QilNodeType.Deref) { // This is absolute path already. We shouldn't touch it return n; } if (n.Variable.Binding.NodeType == QilNodeType.Content) { // This is "begin" of reletive path. Let's rewrite it as absolute: QilUnary content = (QilUnary)n.Variable.Binding; Debug.Assert(content.Child == this.fixup, "Unexpected content node"); QilIterator it = f.For(f.DescendantOrSelf(f.Root(this.fixup))); content.Child = it; n.Variable.Binding = f.Loop(it, content); return n; } n.Variable.Binding = Visit(n.Variable.Binding); return n; } protected override QilNode VisitFilter(QilLoop n) { return VisitLoop(n); } } } } // 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
- DependencyPropertyConverter.cs
- DbReferenceCollection.cs
- ControlBindingsCollection.cs
- CodeThrowExceptionStatement.cs
- FormViewDeletedEventArgs.cs
- ResourceKey.cs
- Message.cs
- SecurityContext.cs
- AutoGeneratedField.cs
- VersionValidator.cs
- StreamingContext.cs
- SerializationFieldInfo.cs
- ProfilePropertySettings.cs
- Popup.cs
- ProtocolsConfigurationHandler.cs
- PolyBezierSegment.cs
- IncomingWebResponseContext.cs
- XmlSchemaDatatype.cs
- PropertyRef.cs
- XPathNavigatorReader.cs
- ClientRuntimeConfig.cs
- Environment.cs
- ConfigurationManagerHelper.cs
- DataControlPagerLinkButton.cs
- ContextStaticAttribute.cs
- EditorPart.cs
- Int64AnimationUsingKeyFrames.cs
- Memoizer.cs
- SafeMILHandle.cs
- FlowStep.cs
- EdmTypeAttribute.cs
- XPathConvert.cs
- StringPropertyBuilder.cs
- DbModificationClause.cs
- ReaderWriterLockWrapper.cs
- PeerInvitationResponse.cs
- RowType.cs
- KernelTypeValidation.cs
- SecurityDocument.cs
- OdbcConnection.cs
- DbExpressionVisitor.cs
- PointIndependentAnimationStorage.cs
- DataServiceContext.cs
- FileSecurity.cs
- ReceiveCompletedEventArgs.cs
- HostedElements.cs
- InvalidFilterCriteriaException.cs
- RuleRef.cs
- ApplicationException.cs
- ServicesSection.cs
- Command.cs
- ConstraintCollection.cs
- TypedTableBaseExtensions.cs
- __Error.cs
- KeyedHashAlgorithm.cs
- ProfileInfo.cs
- DataServiceOperationContext.cs
- ToolstripProfessionalRenderer.cs
- Encoder.cs
- MemoryRecordBuffer.cs
- ConfigsHelper.cs
- GACIdentityPermission.cs
- ConstrainedGroup.cs
- GPRECT.cs
- RegistryPermission.cs
- FormsIdentity.cs
- PropertyInfo.cs
- WaitHandle.cs
- ObjectAnimationUsingKeyFrames.cs
- BooleanKeyFrameCollection.cs
- ByteKeyFrameCollection.cs
- PasswordRecovery.cs
- FuncCompletionCallbackWrapper.cs
- TemplateBindingExtension.cs
- EventEntry.cs
- SQLDecimalStorage.cs
- CFStream.cs
- SaveFileDialog.cs
- RewritingPass.cs
- NativeMethods.cs
- PathNode.cs
- ThrowHelper.cs
- TableCell.cs
- NamespaceMapping.cs
- DesignerActionItem.cs
- XamlTreeBuilderBamlRecordWriter.cs
- CommandLibraryHelper.cs
- TaiwanCalendar.cs
- MessageHeaderAttribute.cs
- WindowsTooltip.cs
- safemediahandle.cs
- DelegatingConfigHost.cs
- ToolStripButton.cs
- ModulesEntry.cs
- TraceSource.cs
- ProcessActivityTreeOptions.cs
- RubberbandSelector.cs
- HyperLinkStyle.cs
- ContractBase.cs
- FixedSOMSemanticBox.cs