Code:
/ DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / Internal / SrgsCompiler / ParseElementCollection.cs / 1 / ParseElementCollection.cs
//---------------------------------------------------------------------------- // //// Copyright (C) Microsoft Corporation. All rights reserved. // // // // Description: // // History: // 11/15/2004 [....] Created from the Kurosawa Code //--------------------------------------------------------------------------- #region Using directives using System; using System.Collections.ObjectModel; using System.Speech.Internal.SrgsParser; #endregion namespace System.Speech.Internal.SrgsCompiler { internal abstract class ParseElementCollection : ParseElement { protected ParseElementCollection (Backend backend, Rule rule) : base (rule) { _backend = backend; } ////// Attach a semantic tag to word. If the word is a rule ref then an /// epsilon transition must be created /// /// internal void AddSemanticInterpretationTag (CfgGrammar.CfgProperty propertyInfo) { // If the word is a rule ref, an epsilon transition must be created if (_endArc != null && _endArc.RuleRef != null) { Arc tagTransition = _backend.EpsilonTransition (1.0f); _backend.AddSemanticInterpretationTag (tagTransition, propertyInfo); // Create a new state State state = _backend.CreateNewState (_rule); // Connect the new state with the end arc tagTransition.Start = state; _endArc.End = state; _endArc = tagTransition; } else { if (_startArc == null) { _startArc = _endArc = _backend.EpsilonTransition (1.0f); } _backend.AddSemanticInterpretationTag (_endArc, propertyInfo); } } // must add the rule Id // _propInfo._ulId = (uint) ((ParseElement) parent).StartState._rule._iSerialize2; internal void AddSementicPropertyTag (CfgGrammar.CfgProperty propertyInfo) { if (_startArc == null) { _startArc = _endArc = _backend.EpsilonTransition (1.0f); } _backend.AddPropertyTag (_startArc, _endArc, propertyInfo); } ////// Insert an epsilon state either before or after the current arc /// /// /// /// ///protected Arc InsertState (Arc arc, float weight, Position position) { // If the arc is a epsilon, creating a new epsilon arc might not be needed if (arc.IsEpsilonTransition) { if (position == Position.Before && arc.End != null && arc.End.InArcs.CountIsOne && Graph.MoveSemanticTagRight (arc)) { return arc; } if (position == Position.After && arc.Start != null && arc.Start.OutArcs.CountIsOne && Graph.MoveSemanticTagLeft (arc)) { return arc; } } // Create an epsilon transition Arc epsilon = _backend.EpsilonTransition (weight); // Insert a state State insertionState = _backend.CreateNewState (_rule); if (position == Position.Before) { epsilon.End = insertionState; arc.Start = insertionState; } else { arc.End = insertionState; epsilon.Start = insertionState; } return epsilon; } /// /// Remove all the epsilon transitions at the beginning of a sub graph /// /// /// ///protected static Arc TrimStart (Arc start, Backend backend) { Arc startArc = start; if (start.End != null) { // Remove the added startState if possible, check done by MoveSemanticTagRight for (State startState = startArc.End; startArc.IsEpsilonTransition && startState != null && Graph.MoveSemanticTagRight (startArc) && startState.InArcs.CountIsOne && startState.OutArcs.CountIsOne; startState = startArc.End) { // State has a single input epsilon transition // Delete the input epsilon transition and delete state. System.Diagnostics.Debug.Assert (startArc.End == startState); startArc.End = null; // Reset the start Arc System.Diagnostics.Debug.Assert (startState.OutArcs.CountIsOne); startArc = startState.OutArcs.First; System.Diagnostics.Debug.Assert (startArc.Start == startState); startArc.Start = null; // Delete the input epsilon transition and delete state if appropriate. backend.DeleteState (startState); } } return startArc; } /// /// Remove all the epsilon transition at the end /// /// /// ///protected static Arc TrimEnd (Arc end, Backend backend) { Arc endArc = end; if (endArc != null) { // Remove the end arc if possible, check done by MoveSemanticTagRight for (State endState = endArc.Start; endArc.IsEpsilonTransition && endState != null && Graph.MoveSemanticTagLeft (endArc) && endState.InArcs.CountIsOne && endState.OutArcs.CountIsOne; endState = endArc.Start) { // State has a single input epsilon transition // Delete the input epsilon transition and delete state. System.Diagnostics.Debug.Assert (endArc.Start == endState); endArc.Start = null; // Reset the end Arc System.Diagnostics.Debug.Assert (endState.InArcs.CountIsOne); endArc = endState.InArcs.First; System.Diagnostics.Debug.Assert (endArc.End == endState); endArc.End = null; // Delete the input epsilon transition and delete state if appropriate. backend.DeleteState (endState); } } return endArc; } protected void PostParse (ParseElementCollection parent) { if (_startArc != null) { parent.AddArc (_startArc, _endArc); } } internal void AddArc (Arc arc) { AddArc (arc, arc); } //internal virtual void AddArc (Arc startArc, Arc endArc) { throw new NotImplementedException (); } internal enum Position { Before, After } /// /// New sets of arcs are added after the last arc /// /// /// internal virtual void AddArc (Arc start, Arc end) { State state = null; if (_startArc == null) { _startArc = start; _endArc = end; } else { bool done = false; // Successivehave 2 epsilon transition if (_endArc.IsEpsilonTransition && start.IsEpsilonTransition) { // Trim the start tag. start = TrimStart (start, _backend); // If Trimming didn't create a non epsilon, try to trim the end if (start.IsEpsilonTransition) { _endArc = TrimEnd (_endArc, _backend); // start and end are still epsilon transition if (_endArc.IsEpsilonTransition) { // we do the merging State from = _endArc.Start; State to = start.End; done = true; if (from == null) { // Ignore the current _start _end Arc.CopyTags (_endArc, start, Direction.Right); _startArc = start; } else if (to == null) { // Ignore the old _startArc _endArc Arc.CopyTags (start, _endArc, Direction.Left); end = _endArc; } else { // No tags, just fold the start and end state if (_endArc.IsPropertylessTransition && start.IsPropertylessTransition) { // Move the end arc start.End = null; _endArc.Start = null; _backend.MoveInputTransitionsAndDeleteState (from, to); } else { // Discard the endstate and replace it with the startArc Arc.CopyTags (start, _endArc, Direction.Left); start.End = null; _endArc.End = to; } } } } } if (!done) { // If the last arc is an epsilon value then there is no need to create a new state if (_endArc.IsEpsilonTransition && Graph.CanTagsBeMoved (_endArc, start)) { // Copy the tags from "endArc" to the "start" Arc.CopyTags (_endArc, start, Direction.Right); if (_endArc.Start != null) { // Discard the endstate and replace it with the startArc state = _endArc.Start; _endArc.Start = null; // Connexion between the state end the start is done below //state.OutArcs.Add (start); //start.Start = state; } if (_endArc == _startArc) { _startArc = start; } } else { // If the first arc is an epsilon value then there is no need to create a new state if (start.IsEpsilonTransition && Graph.CanTagsBeMoved (start, _endArc)) { // Copy the tags from "endArc" to the "start" Arc.CopyTags (start, _endArc, Direction.Left); if (start.End != null) { // Discard the endstate and replace it with the startArc state = start.End; start.End = null; _endArc.End = state; state = null; } if (start == end) { end = _endArc; } } else { // Create a new state state = _backend.CreateNewState (_rule); // Connect the new state with the end arc _endArc.End = state; } } // connect the arcs if (state != null) { start.Start = state; } } _endArc = end; } } protected Backend _backend; protected Arc _startArc; protected Arc _endArc; } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- BitmapMetadata.cs
- X509WindowsSecurityToken.cs
- TransformConverter.cs
- TemplateInstanceAttribute.cs
- ParameterCollection.cs
- Block.cs
- MsmqIntegrationValidationBehavior.cs
- TimelineGroup.cs
- PopupEventArgs.cs
- StylusPoint.cs
- DivideByZeroException.cs
- ResourceDisplayNameAttribute.cs
- XmlDataSourceNodeDescriptor.cs
- ActivityCodeDomSerializer.cs
- BamlLocalizerErrorNotifyEventArgs.cs
- TabControl.cs
- XPathNodeIterator.cs
- CacheChildrenQuery.cs
- WorkflowDesigner.cs
- StylusDownEventArgs.cs
- ApplicationSecurityInfo.cs
- ContextMenu.cs
- XmlSchemaInclude.cs
- ModelUIElement3D.cs
- EncryptedData.cs
- Internal.cs
- EpmSourceTree.cs
- Int32AnimationUsingKeyFrames.cs
- CommonXSendMessage.cs
- IgnoreFileBuildProvider.cs
- DrawListViewColumnHeaderEventArgs.cs
- ProfessionalColors.cs
- EntityContainerEmitter.cs
- Button.cs
- OleCmdHelper.cs
- ResizingMessageFilter.cs
- DataMemberFieldConverter.cs
- DocumentViewerAutomationPeer.cs
- LinqDataSourceInsertEventArgs.cs
- RelatedImageListAttribute.cs
- CodeDelegateCreateExpression.cs
- EditingMode.cs
- WindowsSecurityToken.cs
- ColumnPropertiesGroup.cs
- LinearKeyFrames.cs
- SafeUserTokenHandle.cs
- querybuilder.cs
- MulticastDelegate.cs
- SessionStateSection.cs
- ApplyImportsAction.cs
- TreeView.cs
- XamlClipboardData.cs
- CallbackValidator.cs
- DictionaryContent.cs
- OutOfMemoryException.cs
- SafeFindHandle.cs
- WebBrowserBase.cs
- UTF8Encoding.cs
- ItemsPanelTemplate.cs
- StateMachineHistory.cs
- PrintEvent.cs
- ThicknessKeyFrameCollection.cs
- StateBag.cs
- HwndSourceParameters.cs
- DataGridViewCheckBoxCell.cs
- QueryContinueDragEvent.cs
- SqlRewriteScalarSubqueries.cs
- RepeatBehavior.cs
- XPathScanner.cs
- ConfigUtil.cs
- JsonServiceDocumentSerializer.cs
- ComponentSerializationService.cs
- ColorKeyFrameCollection.cs
- ByteStack.cs
- InstanceCreationEditor.cs
- ExecutionScope.cs
- _SpnDictionary.cs
- ImageIndexEditor.cs
- PrintControllerWithStatusDialog.cs
- Adorner.cs
- SqlCacheDependencyDatabase.cs
- ISFTagAndGuidCache.cs
- CharacterMetrics.cs
- Dump.cs
- DataControlFieldCell.cs
- ILGenerator.cs
- XmlDocumentFragment.cs
- SiteMapDataSourceView.cs
- RegexWorker.cs
- WebPartAddingEventArgs.cs
- TrustLevel.cs
- ReferenceTypeElement.cs
- XmlHierarchicalEnumerable.cs
- RequestCachePolicy.cs
- ApplyTemplatesAction.cs
- SizeFConverter.cs
- EllipticalNodeOperations.cs
- BitmapEffect.cs
- SmtpSpecifiedPickupDirectoryElement.cs
- Table.cs