Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / XmlUtils / System / Xml / Xsl / Xslt / InvokeGenerator.cs / 1305376 / InvokeGenerator.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //[....] //----------------------------------------------------------------------------- using System.Collections.Generic; using System.Diagnostics; using System.Xml.Xsl.Qil; namespace System.Xml.Xsl.Xslt { using T = XmlQueryTypeFactory; /** InvokeGenerator is one of the trikest peaces here. ARGS: QilFunction func -- Functions which should be invoked. Arguments of this function (formalArgs) are Let nodes anotated with names and default valies. Problem 1 is that default values can contain references to previouse args of this function. Problem 2 is that default values shouldn't contain fixup nodes. ArrayList actualArgs -- Array of QilNodes anotated with names. When name of formalArg match name actualArg last one is used as invokeArg, otherwise formalArg's default value is cloned and used. **/ internal class InvokeGenerator : QilCloneVisitor { private bool debug; private StackiterStack; private QilList formalArgs; private QilList invokeArgs; private int curArg; // this.Clone() depends on this value private XsltQilFactory fac; public InvokeGenerator(XsltQilFactory f, bool debug) : base(f.BaseFactory) { this.debug = debug; this.fac = f; this.iterStack = new Stack (); } public QilNode GenerateInvoke(QilFunction func, IList actualArgs) { iterStack.Clear(); formalArgs = func.Arguments; invokeArgs = fac.ActualParameterList(); // curArg is an instance variable used in Clone() method for (curArg = 0; curArg < formalArgs.Count; curArg ++) { // Find actual value for a given formal arg QilParameter formalArg = (QilParameter)formalArgs[curArg]; QilNode invokeArg = FindActualArg(formalArg, actualArgs); // If actual value was not specified, use the default value and copy its debug comment if (invokeArg == null) { if (debug) { if (formalArg.Name.NamespaceUri == XmlReservedNs.NsXslDebug) { Debug.Assert(formalArg.Name.LocalName == "namespaces", "Cur,Pos,Last don't have default values and should be always added to by caller in AddImplicitArgs()"); Debug.Assert(formalArg.DefaultValue != null, "PrecompileProtoTemplatesHeaders() set it"); invokeArg = Clone(formalArg.DefaultValue); } else { invokeArg = fac.DefaultValueMarker(); } } else { Debug.Assert(formalArg.Name.NamespaceUri != XmlReservedNs.NsXslDebug, "Cur,Pos,Last don't have default values and should be always added to by caller in AddImplicitArgs(). We don't have $namespaces in !debug."); invokeArg = Clone(formalArg.DefaultValue); } } XmlQueryType formalType = formalArg.XmlType; XmlQueryType invokeType = invokeArg.XmlType; // Possible arg types: anyType, node-set, string, boolean, and number fac.CheckXsltType(formalArg); fac.CheckXsltType(invokeArg); if (!invokeType.IsSubtypeOf(formalType)) { // This may occur only if inferred type of invokeArg is XslFlags.None Debug.Assert(invokeType == T.ItemS, "Actual argument type is not a subtype of formal argument type"); invokeArg = fac.TypeAssert(invokeArg, formalType); } invokeArgs.Add(invokeArg); } // Create Invoke node and wrap it with previous parameter declarations QilNode invoke = fac.Invoke(func, invokeArgs); while (iterStack.Count != 0) invoke = fac.Loop(iterStack.Pop(), invoke); return invoke; } private QilNode FindActualArg(QilParameter formalArg, IList actualArgs) { QilName argName = formalArg.Name; Debug.Assert(argName != null); foreach (XslNode actualArg in actualArgs) { if (actualArg.Name.Equals(argName)) { return ((VarPar)actualArg).Value; } } return null; } // ------------------------------------ QilCloneVisitor ------------------------------------- protected override QilNode VisitReference(QilNode n) { QilNode replacement = FindClonedReference(n); // If the reference is internal for the subtree being cloned, return it as is if (replacement != null) { return replacement; } // Replacement was not found, thus the reference is external for the subtree being cloned. // The case when it refers to one of previous arguments (xsl:param can refer to previous // xsl:param's) must be taken care of. for (int prevArg = 0; prevArg < curArg; prevArg++) { Debug.Assert(formalArgs[prevArg] != null, "formalArg must be in the list"); Debug.Assert(invokeArgs[prevArg] != null, "This arg should be compiled already"); // Is this a reference to prevArg? if (n == formalArgs[prevArg]) { // If prevArg is a literal, just clone it if (invokeArgs[prevArg] is QilLiteral) { return invokeArgs[prevArg].ShallowClone(fac.BaseFactory); } // If prevArg is not an iterator, cache it in an iterator, and return it if (!(invokeArgs[prevArg] is QilIterator)) { QilIterator var = fac.BaseFactory.Let(invokeArgs[prevArg]); iterStack.Push(var); invokeArgs[prevArg] = var; } Debug.Assert(invokeArgs[prevArg] is QilIterator); return invokeArgs[prevArg]; } } // This is a truly external reference, return it as is return n; } protected override QilNode VisitFunction(QilFunction n) { // No need to change function references return 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
- ViewStateModeByIdAttribute.cs
- WorkflowItemsPresenter.cs
- DiscoveryDocumentSearchPattern.cs
- DuplexChannelFactory.cs
- RadioButtonPopupAdapter.cs
- WebPartUtil.cs
- Viewport3DAutomationPeer.cs
- CodePageUtils.cs
- IdentityReference.cs
- FormClosingEvent.cs
- ToolStripSplitStackLayout.cs
- NullableIntMinMaxAggregationOperator.cs
- EditorZone.cs
- WebHeaderCollection.cs
- BindingCompleteEventArgs.cs
- DomainConstraint.cs
- SizeChangedEventArgs.cs
- DynamicValidatorEventArgs.cs
- ObjectContextServiceProvider.cs
- HttpRequestTraceRecord.cs
- RelationalExpressions.cs
- DataGridViewCellParsingEventArgs.cs
- HostExecutionContextManager.cs
- Stroke.cs
- AncestorChangedEventArgs.cs
- WorkflowHostingEndpoint.cs
- parserscommon.cs
- HttpSessionStateWrapper.cs
- ClientBuildManagerCallback.cs
- brushes.cs
- DataGridPageChangedEventArgs.cs
- BackStopAuthenticationModule.cs
- HMACSHA384.cs
- Compiler.cs
- PersonalizablePropertyEntry.cs
- StreamProxy.cs
- ConstNode.cs
- TypeValidationEventArgs.cs
- BitmapFrame.cs
- UnlockCardRequest.cs
- RepeaterItem.cs
- InvalidAsynchronousStateException.cs
- CompensatableSequenceActivity.cs
- StreamWithDictionary.cs
- RegexRunnerFactory.cs
- TimeSpanValidatorAttribute.cs
- GenericIdentity.cs
- OrthographicCamera.cs
- BuilderInfo.cs
- CollectionView.cs
- RSACryptoServiceProvider.cs
- DataServiceProcessingPipeline.cs
- FixedTextPointer.cs
- InstanceDescriptor.cs
- FormParameter.cs
- X509CertificateTrustedIssuerElementCollection.cs
- StorageFunctionMapping.cs
- ParenthesizePropertyNameAttribute.cs
- FlowDocumentScrollViewer.cs
- WindowsEditBox.cs
- TextTrailingCharacterEllipsis.cs
- FontCacheUtil.cs
- KeyPressEvent.cs
- HtmlValidatorAdapter.cs
- HtmlTableRow.cs
- ArithmeticException.cs
- ServiceCredentialsElement.cs
- ValidatorAttribute.cs
- SingleStorage.cs
- ElementFactory.cs
- CommandHelpers.cs
- CursorConverter.cs
- DataSourceViewSchemaConverter.cs
- EdmFunction.cs
- InfoCardRSACryptoProvider.cs
- JournalEntry.cs
- ScriptResourceHandler.cs
- ValidationErrorCollection.cs
- Propagator.Evaluator.cs
- ViewgenContext.cs
- HttpApplicationFactory.cs
- ProxyWebPartConnectionCollection.cs
- WebCategoryAttribute.cs
- ComponentResourceKey.cs
- XmlSerializerSection.cs
- VolatileResourceManager.cs
- ChangePassword.cs
- PhysicalAddress.cs
- FilteredSchemaElementLookUpTable.cs
- XsltQilFactory.cs
- HttpWrapper.cs
- XPathNavigatorKeyComparer.cs
- XdrBuilder.cs
- CustomAttributeSerializer.cs
- DependencyProperty.cs
- Geometry.cs
- GlyphCache.cs
- CodeAccessSecurityEngine.cs
- StringSource.cs
- FileAuthorizationModule.cs