Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / Internal / SrgsCompiler / arc.cs / 1 / arc.cs
//----------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
//
//
// Description:
// Custom list to handle efficently the removal of elements
//
// History:
// 5/1/2004 jeanfp
//---------------------------------------------------------------------------
using System;
using System.Collections;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.Speech.Internal.SrgsParser;
using System.Text;
namespace System.Speech.Internal.SrgsCompiler
{
///
/// Summary description for Arc.
///
#if DEBUG
[DebuggerDisplay ("{ToString ()}")]
#endif
internal class Arc : IComparer, IComparable
{
//*******************************************************************
//
// Constructors
//
//*******************************************************************
#region Constructors
internal Arc ()
{
#if VIEW_STATS
GrammarBackEnd._cArcs++;
#endif
}
internal Arc (Arc arc)
: this ()
{
_start = arc._start;
_end = arc._end;
_iWord = arc._iWord;
_flWeight = arc._flWeight;
_confidence = arc._confidence;
_ruleRef = arc._ruleRef;
_specialTransitionIndex = arc._specialTransitionIndex;
_iSerialize = arc._iSerialize;
_matchMode = arc._matchMode;
#if DEBUG
_fCheckingForExitPath = arc._fCheckingForExitPath;
_be = arc._be;
#endif
}
internal Arc (Arc arc, State start, State end)
: this (arc)
{
_start = start;
_end = end;
}
internal Arc (Arc arc, State start, State end, int wordId)
: this (arc, start, end)
{
_iWord = wordId;
}
internal Arc (string sWord, Rule ruleRef, StringBlob words, float flWeight, int confidence, Rule specialRule, MatchMode matchMode, ref bool fNeedWeightTable)
: this (sWord, ruleRef, words, flWeight, confidence, specialRule, _serializeToken++, matchMode, ref fNeedWeightTable)
{
}
private Arc (string sWord, Rule ruleRef, StringBlob words, float flWeight, int confidence, Rule specialRule, uint iSerialize, MatchMode matchMode, ref bool fNeedWeightTable)
: this (0, flWeight, confidence, 0, matchMode, ref fNeedWeightTable)
{
//CfgGrammar.TraceInformation ("Arc::Arc");
_ruleRef = ruleRef;
_iSerialize = iSerialize;
if (ruleRef == null)
{
if (specialRule != null)
{
_specialTransitionIndex = (specialRule == CfgGrammar.SPRULETRANS_WILDCARD) ? CfgGrammar.SPWILDCARDTRANSITION : (specialRule == CfgGrammar.SPRULETRANS_DICTATION) ? CfgGrammar.SPDICTATIONTRANSITION : CfgGrammar.SPTEXTBUFFERTRANSITION;
}
else
{
words.Add (sWord, out _iWord);
}
}
}
internal Arc (int iWord, float flWeight, int confidence, int ulSpecialTransitionIndex, MatchMode matchMode, ref bool fNeedWeightTable)
: this ()
{
//CfgGrammar.TraceInformation ("Arc::Arc");
_confidence = confidence;
_iWord = iWord;
_flWeight = flWeight;
_matchMode = matchMode;
_iSerialize = _serializeToken++;
if (!flWeight.Equals (CfgGrammar.DEFAULT_WEIGHT))
{
fNeedWeightTable |= true;
}
_specialTransitionIndex = ulSpecialTransitionIndex;
}
#endregion
//********************************************************************
//
// Internal Methods
//
//*******************************************************************
#region internal Methods
#region IComparable Interface implementation
public int CompareTo (Arc obj1)
{
return Compare (this, obj1);
}
int IComparer.Compare (Arc obj1, Arc obj2)
{
return Compare (obj1, obj2);
}
private int Compare (Arc obj1, Arc obj2)
{
if (obj1 == obj2)
return 0;
if (obj1 == null)
return -1;
if (obj2 == null)
return 1;
Arc arc1 = (Arc) obj1;
Arc arc2 = (Arc) obj2;
int diff = arc1.SortRank () - arc2.SortRank ();
diff = diff != 0 ? diff : (int) arc1._iSerialize - (int) arc2._iSerialize;
System.Diagnostics.Debug.Assert (diff != 0);
return diff;
}
internal static int CompareContent (Arc arc1, Arc arc2)
{
// Compare arcs based on IndexOfWord, IsRuleRef, SpecialTransitionIndex, Optional, and RequiredConfidence.
// SemanticTag, StartState, EndState, Weight, and SerializeIndex are not factors.
if (arc1._iWord != arc2._iWord)
return arc1._iWord - arc2._iWord;
else
{
if (arc1._ruleRef != null || arc2._ruleRef != null || ((arc1._specialTransitionIndex - arc2._specialTransitionIndex) + (arc1._confidence - arc2._confidence) != 0))
{
int diff = 0;
if (arc1._ruleRef != null || arc2._ruleRef != null)
{
if (arc1._ruleRef != null && arc2._ruleRef == null)
{
diff = -1;
}
else if (arc1._ruleRef == null && arc2._ruleRef != null)
{
diff = 1;
}
else
{
diff = arc1._ruleRef.Name.CompareTo (arc2._ruleRef.Name);
}
}
if (diff != 0)
return diff;
else if (arc1._specialTransitionIndex != arc2._specialTransitionIndex)
return arc1._specialTransitionIndex - arc2._specialTransitionIndex;
else if (arc1._confidence != arc2._confidence)
return arc1._confidence - arc2._confidence;
}
// An identical match
return 0;
}
}
internal static int CompareContentForKey (Arc arc1, Arc arc2)
{
int diff = CompareContent (arc1, arc2);
if (diff == 0)
{
return (int) arc1._iSerialize - (int) arc2._iSerialize;
}
return diff;
}
#endregion
internal float Serialize (StreamMarshaler streamBuffer, bool isLast, uint arcIndex)
{
//CfgGrammar.TraceInformation ("Arc::SerializeArcData");
CfgArc A = new CfgArc ();
A.LastArc = isLast;
A.HasSemanticTag = SemanticTagCount > 0;
A.NextStartArcIndex = (uint) (_end != null ? _end.SerializeId : 0);
if (_ruleRef != null)
{
A.RuleRef = true;
A.TransitionIndex = (uint) _ruleRef._iSerialize; //_pFirstState.SerializeId;
}
else
{
A.RuleRef = false;
if (_specialTransitionIndex != 0)
{
A.TransitionIndex = (uint) _specialTransitionIndex;
}
else
{
A.TransitionIndex = (uint) _iWord;
}
}
A.LowConfRequired = (_confidence < 0);
A.HighConfRequired = (_confidence > 0);
A.MatchMode = (uint) _matchMode;
// For new arcs SerializeId is INFINITE so we set it correctly here.
// For existing states we preserve the index from loading,
// unless new states have been added in, in which case the arc index,
// and hence the transition id have changed. There is a workaround in ReloadCmd
// to invalidate rules in this case.
_iSerialize = arcIndex;
streamBuffer.WriteStream (A);
return _flWeight;
}
internal static float SerializeExtraEpsilonWithTag (StreamMarshaler streamBuffer, Arc arc, bool isLast, uint arcIndex)
{
CfgArc A = new CfgArc ();
A.LastArc = isLast;
A.HasSemanticTag = true;
A.NextStartArcIndex = arcIndex;
A.TransitionIndex = 0;
A.LowConfRequired = false;
A.HighConfRequired = false;
A.MatchMode = (uint) arc._matchMode;
streamBuffer.WriteStream (A);
return arc._flWeight;
}
internal void SetArcIndexForTag (int iArc, uint iArcOffset, bool tagsCannotSpanOverMultipleArcs)
{
_startTags [iArc]._cfgTag.StartArcIndex = iArcOffset;
_startTags [iArc]._cfgTag.ArcIndex = iArcOffset;
if (tagsCannotSpanOverMultipleArcs)
{
_startTags [iArc]._cfgTag.EndArcIndex = iArcOffset;
}
}
internal void SetEndArcIndexForTags ()
{
//CfgGrammar.TraceInformation ("Arc::SerializeSemanticData");
if (_endTags != null)
{
foreach (Tag tag in _endTags)
{
tag._cfgTag.EndArcIndex = (uint) _iSerialize;
}
}
}
///
/// Compare the contents and number of output arcs from the start state.
/// The comparison is done by Arc content, number of arcs at then and the id for the last arc
///
///
///
///
/// Compare the contents and number of input arcs to the end state.
/// The comparison is done by Arc content, number of arcs at then and the id for the last arc
///
///
///
///
/// Compare the contents and start/end states of two arcs.
///
///
///
/// ();
}
_startTags.Add (tag);
}
internal void AddEndTag (Tag tag)
{
if (_endTags == null)
{
_endTags = new Collection ();
}
_endTags.Add (tag);
}
internal void ClearTags ()
{
_startTags = null;
_endTags = null;
}
static internal void CopyTags (Arc src, Arc dest, Direction move)
{
// Copy the start tags if any
if (src._startTags != null)
{
// if dest has not tags just move the collection
if (dest._startTags == null)
{
dest._startTags = src._startTags;
}
else
{
if (move == Direction.Right)
{
for (int i = 0; i < src._startTags.Count; i++)
{
dest._startTags.Insert (i, src._startTags [i]);
}
}
else
{
// if dest has tags add the ones from the source to the existing ones
foreach (Tag tag in src._startTags)
{
dest._startTags.Add (tag);
}
}
}
}
// Copy the end tags if any
if (src._endTags != null)
{
// if dest has not tags just move the collection
if (dest._endTags == null)
{
dest._endTags = src._endTags;
}
else
{
if (move == Direction.Right)
{
for (int i = 0; i < src._endTags.Count; i++)
{
dest._endTags.Insert (i, src._endTags [i]);
}
}
else
{
// if dest has tags add the ones from the source to the existing ones
foreach (Tag tag in src._endTags)
{
dest._endTags.Add (tag);
}
}
}
}
// No tags src associated with the 'src' anymore
src._startTags = src._endTags = null;
}
internal void CloneTags (Arc arc, List _tags, Dictionary endArcs, Backend be)
{
if (arc._startTags != null)
{
if (_startTags == null)
{
_startTags = new Collection ();
}
foreach (Tag tag in arc._startTags)
{
Tag newTag = new Tag (tag);
_tags.Add (newTag);
_startTags.Add (newTag);
endArcs.Add (tag, newTag);
#if DEBUG
newTag._be = be;
#endif
if (be != null)
{
int idTagName;
newTag._cfgTag._nameOffset = be.Symbols.Add (tag._be.Symbols.FromOffset (tag._cfgTag._nameOffset), out idTagName);
if (tag._cfgTag._valueOffset != 0 && tag._cfgTag.PropVariantType == System.Runtime.InteropServices.VarEnum.VT_EMPTY)
{
newTag._cfgTag._valueOffset = be.Symbols.Add (tag._be.Symbols.FromOffset (tag._cfgTag._valueOffset), out idTagName);
}
}
}
}
if (arc._endTags != null)
{
if (_endTags == null)
{
_endTags = new Collection ();
}
foreach (Tag tag in arc._endTags)
{
Tag newTag = endArcs [tag];
_endTags.Add (newTag);
endArcs.Remove (tag);
}
}
}
internal bool SameTags (Arc arc)
{
// no tags ok
bool same = _startTags == null && arc._startTags == null;
// Compare each tag if not null
if (!same && _startTags != null && arc._startTags != null && _startTags.Count == arc._startTags.Count)
{
same = true;
for (int i = 0; i < _startTags.Count; i++)
{
same &= _startTags [i] == arc._startTags [i];
}
}
// Compare end tags if the start tags are equal
if (same)
{
same = _endTags == null && arc._endTags == null;
// Compare each tag if not null
if (!same && _endTags != null && arc._endTags != null && _endTags.Count == arc._endTags.Count)
{
same = true;
for (int i = 0; i < _endTags.Count; i++)
{
same &= _endTags [i] == arc._endTags [i];
}
}
}
return same;
}
internal void ConnectStates ()
{
if (_end != null)
{
_end.InArcs.Add (this);
}
if (_start != null)
{
_start.OutArcs.Add (this);
}
}
///
/// Is the arc an epsilon transition?
///
///
/// Is this arc an arc without attached properties?
///
/// Is this arc an arc without attached properties?
internal bool IsPropertylessTransition
{
get
{
// Does not own semantic property & No tag references
return _startTags == null && _endTags == null;
}
}
#if DEBUG
override public string ToString ()
{
return (_start != null ? "#" + _start.Id.ToString (CultureInfo.InvariantCulture) : "") + " <- " + DebuggerDisplayTags () + " -> " + (_end != null ? "#" + _end.Id.ToString (CultureInfo.InvariantCulture) : "");
}
internal string DebuggerDisplayTags ()
{
StringBuilder sb = new StringBuilder ();
if (_iWord == 0 && (_ruleRef != null || _specialTransitionIndex != 0))
{
sb.Append ("<");
if (_ruleRef != null)
{
sb.Append (_ruleRef.Name);
}
else
{
switch (_specialTransitionIndex)
{
case CfgGrammar.SPWILDCARDTRANSITION:
sb.Append ("GARBAGE");
break;
case CfgGrammar.SPTEXTBUFFERTRANSITION:
sb.Append ("TEXTBUFFER");
break;
case CfgGrammar.SPDICTATIONTRANSITION:
sb.Append ("DICTATION");
break;
}
}
sb.Append (">");
}
else
{
sb.Append ("'");
sb.Append (_iWord == 0 ? new string (new char [] { (char) 0x3b5 }) : _be != null ? _be.Words [_iWord] : _iWord.ToString (CultureInfo.InvariantCulture));
sb.Append ("'");
}
if (_startTags != null || _endTags != null)
{
// Check if the tags are the same
bool same = _startTags != null && _endTags != null && _endTags.Count == _startTags.Count;
// Compare each tag if not null
for (int i = 0; same && i < _endTags.Count; i++)
{
same &= _startTags [i] == _endTags [i];
}
sb.Append (" (");
if (_startTags != null)
{
bool first = true;
foreach (Tag tag in _startTags)
{
if (!first)
{
sb.Append ("|");
}
sb.Append (GetSemanticTag (tag));
first = false;
}
}
else
{
sb.Append ("-");
}
if (!same)
{
sb.Append (",");
if (_endTags != null)
{
bool first = true;
foreach (Tag tag in _endTags)
{
if (!first)
{
sb.Append ("|");
}
sb.Append (GetSemanticTag (tag));
first = false;
}
}
else
{
sb.Append ("-");
}
}
sb.Append (")");
}
return sb.ToString ();
}
#endif
#endregion
//********************************************************************
//
// Internal Properties
//
//********************************************************************
#region internal Properties
internal int SemanticTagCount
{
get
{
return _startTags == null ? 0 : _startTags.Count;
}
}
internal State Start
{
set
{
if (value != _start)
{
if (_start != null)
{
_start.OutArcs.Remove (this);
}
_start = value;
if (_start != null)
{
_start.OutArcs.Add (this);
}
}
}
get
{
return _start;
}
}
internal State End
{
set
{
// If no change, then do nothing
if (value != _end)
{
if (_end != null)
{
_end.InArcs.Remove (this);
}
_end = value;
if (_end != null)
{
_end.InArcs.Add (this);
}
}
}
get
{
return _end;
}
}
internal int WordId
{
get
{
return _iWord;
}
}
internal Rule RuleRef
{
set
{
if ((_start != null && !_start.OutArcs.IsEmpty) || (_end != null && !_end.InArcs.IsEmpty))
{
throw new InvalidOperationException ();
}
_ruleRef = value;
}
get
{
return _ruleRef;
}
}
internal float Weight
{
set
{
_flWeight = value;
}
get
{
return _flWeight;
}
}
internal int SpecialTransitionIndex
{
get
{
return _specialTransitionIndex;
}
}
#if DEBUG
internal bool CheckingForExitPath
{
set
{
_fCheckingForExitPath = value;
}
get
{
return _fCheckingForExitPath;
}
}
internal Backend Backend
{
set
{
_be = value;
}
}
#endif
#endregion
//*******************************************************************
//
// Private Methods
//
//********************************************************************
#region private Methods
#if DEBUG
private string GetSemanticTag (Tag tag)
{
StringBuilder sb = new StringBuilder ();
string value;
string tagName = GetSemanticValue (tag._cfgTag, _be.Symbols, out value);
if (tagName != "SemanticKey")
{
if (tagName != "=")
{
sb.Append (tagName);
sb.Append ("=");
}
sb.Append (value);
}
else
{
sb.Append ("[");
sb.Append (value);
sb.Append ("]");
}
return sb.ToString ();
}
private static string GetSemanticValue (CfgSemanticTag tag, StringBlob symbols, out string value)
{
switch (tag.PropVariantType)
{
case VarEnum.VT_EMPTY:
value = tag._valueOffset > 0 ? symbols.FromOffset (tag._valueOffset) : tag._valueOffset.ToString (CultureInfo.InvariantCulture);
break;
case VarEnum.VT_I4:
case VarEnum.VT_UI4:
value = tag._varInt.ToString (CultureInfo.InvariantCulture);
break;
case VarEnum.VT_R8:
value = tag._varDouble.ToString (CultureInfo.InvariantCulture);
break;
case VarEnum.VT_BOOL:
value = tag._varInt == 0 ? "false" : "true";
break;
default:
value = "Unknown property type";
break;
}
return tag._nameOffset > 0 ? symbols.FromOffset (tag._nameOffset) : tag._nameOffset.ToString (CultureInfo.InvariantCulture); ;
}
#endif
// Sort arcs in a state based on type, and then on index.
// Arcs loaded froma file have their index preserved where possible. New dynamic states have index == INFINITE,
private int SortRank ()
{
int ret = 0;
if (_ruleRef != null)
ret = 0x1000000 + _ruleRef._cfgRule._nameOffset; // It's a rule - Place 2nd in list
if (_iWord != 0)
ret += 0x2000000 + _iWord;// It's a word - Place last in list
if (_specialTransitionIndex != 0)
ret += 0x3000000; // It's a special transition (dictation, text buffer, or wildcard)
return ret; // It's an epsilon -- We're first
}
#endregion
//*******************************************************************
//
// Private Fields
//
//*******************************************************************
#region Private Fields
// Transition start state
private State _start;
// Transition end state (or NULL for final state)
private State _end;
// Either word index or pRule but not both
private int _iWord;
// Rule ref
private Rule _ruleRef;
// If != 0 then transition to dictation, text buffer, or wildcard
private int _specialTransitionIndex;
private float _flWeight;
// current matching mode
private MatchMode _matchMode;
private int _confidence;
// Index of arc in table when serialized. Recreated when we reload grammar.
private uint _iSerialize;
// If non-null then has semantic tag associated with this
private Collection _startTags;
private Collection _endTags;
private static uint _serializeToken = 1;
#if DEBUG
// This is where the TransitionId comes from in engine interfaces.
private bool _fCheckingForExitPath;
private Backend _be;
#endif
#endregion
}
//*******************************************************************
//
// Internal Types
//
//********************************************************************
#region private Methods
internal enum Direction
{
Right,
Left
}
#endregion
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
//----------------------------------------------------------------------------
//
// Copyright (c) Microsoft Corporation. All rights reserved.
//
//
//
//
// Description:
// Custom list to handle efficently the removal of elements
//
// History:
// 5/1/2004 jeanfp
//---------------------------------------------------------------------------
using System;
using System.Collections;
using System.Collections.ObjectModel;
using System.Collections.Generic;
using System.Diagnostics;
using System.Globalization;
using System.Runtime.InteropServices;
using System.Speech.Internal.SrgsParser;
using System.Text;
namespace System.Speech.Internal.SrgsCompiler
{
///
/// Summary description for Arc.
///
#if DEBUG
[DebuggerDisplay ("{ToString ()}")]
#endif
internal class Arc : IComparer, IComparable
{
//*******************************************************************
//
// Constructors
//
//*******************************************************************
#region Constructors
internal Arc ()
{
#if VIEW_STATS
GrammarBackEnd._cArcs++;
#endif
}
internal Arc (Arc arc)
: this ()
{
_start = arc._start;
_end = arc._end;
_iWord = arc._iWord;
_flWeight = arc._flWeight;
_confidence = arc._confidence;
_ruleRef = arc._ruleRef;
_specialTransitionIndex = arc._specialTransitionIndex;
_iSerialize = arc._iSerialize;
_matchMode = arc._matchMode;
#if DEBUG
_fCheckingForExitPath = arc._fCheckingForExitPath;
_be = arc._be;
#endif
}
internal Arc (Arc arc, State start, State end)
: this (arc)
{
_start = start;
_end = end;
}
internal Arc (Arc arc, State start, State end, int wordId)
: this (arc, start, end)
{
_iWord = wordId;
}
internal Arc (string sWord, Rule ruleRef, StringBlob words, float flWeight, int confidence, Rule specialRule, MatchMode matchMode, ref bool fNeedWeightTable)
: this (sWord, ruleRef, words, flWeight, confidence, specialRule, _serializeToken++, matchMode, ref fNeedWeightTable)
{
}
private Arc (string sWord, Rule ruleRef, StringBlob words, float flWeight, int confidence, Rule specialRule, uint iSerialize, MatchMode matchMode, ref bool fNeedWeightTable)
: this (0, flWeight, confidence, 0, matchMode, ref fNeedWeightTable)
{
//CfgGrammar.TraceInformation ("Arc::Arc");
_ruleRef = ruleRef;
_iSerialize = iSerialize;
if (ruleRef == null)
{
if (specialRule != null)
{
_specialTransitionIndex = (specialRule == CfgGrammar.SPRULETRANS_WILDCARD) ? CfgGrammar.SPWILDCARDTRANSITION : (specialRule == CfgGrammar.SPRULETRANS_DICTATION) ? CfgGrammar.SPDICTATIONTRANSITION : CfgGrammar.SPTEXTBUFFERTRANSITION;
}
else
{
words.Add (sWord, out _iWord);
}
}
}
internal Arc (int iWord, float flWeight, int confidence, int ulSpecialTransitionIndex, MatchMode matchMode, ref bool fNeedWeightTable)
: this ()
{
//CfgGrammar.TraceInformation ("Arc::Arc");
_confidence = confidence;
_iWord = iWord;
_flWeight = flWeight;
_matchMode = matchMode;
_iSerialize = _serializeToken++;
if (!flWeight.Equals (CfgGrammar.DEFAULT_WEIGHT))
{
fNeedWeightTable |= true;
}
_specialTransitionIndex = ulSpecialTransitionIndex;
}
#endregion
//********************************************************************
//
// Internal Methods
//
//*******************************************************************
#region internal Methods
#region IComparable Interface implementation
public int CompareTo (Arc obj1)
{
return Compare (this, obj1);
}
int IComparer.Compare (Arc obj1, Arc obj2)
{
return Compare (obj1, obj2);
}
private int Compare (Arc obj1, Arc obj2)
{
if (obj1 == obj2)
return 0;
if (obj1 == null)
return -1;
if (obj2 == null)
return 1;
Arc arc1 = (Arc) obj1;
Arc arc2 = (Arc) obj2;
int diff = arc1.SortRank () - arc2.SortRank ();
diff = diff != 0 ? diff : (int) arc1._iSerialize - (int) arc2._iSerialize;
System.Diagnostics.Debug.Assert (diff != 0);
return diff;
}
internal static int CompareContent (Arc arc1, Arc arc2)
{
// Compare arcs based on IndexOfWord, IsRuleRef, SpecialTransitionIndex, Optional, and RequiredConfidence.
// SemanticTag, StartState, EndState, Weight, and SerializeIndex are not factors.
if (arc1._iWord != arc2._iWord)
return arc1._iWord - arc2._iWord;
else
{
if (arc1._ruleRef != null || arc2._ruleRef != null || ((arc1._specialTransitionIndex - arc2._specialTransitionIndex) + (arc1._confidence - arc2._confidence) != 0))
{
int diff = 0;
if (arc1._ruleRef != null || arc2._ruleRef != null)
{
if (arc1._ruleRef != null && arc2._ruleRef == null)
{
diff = -1;
}
else if (arc1._ruleRef == null && arc2._ruleRef != null)
{
diff = 1;
}
else
{
diff = arc1._ruleRef.Name.CompareTo (arc2._ruleRef.Name);
}
}
if (diff != 0)
return diff;
else if (arc1._specialTransitionIndex != arc2._specialTransitionIndex)
return arc1._specialTransitionIndex - arc2._specialTransitionIndex;
else if (arc1._confidence != arc2._confidence)
return arc1._confidence - arc2._confidence;
}
// An identical match
return 0;
}
}
internal static int CompareContentForKey (Arc arc1, Arc arc2)
{
int diff = CompareContent (arc1, arc2);
if (diff == 0)
{
return (int) arc1._iSerialize - (int) arc2._iSerialize;
}
return diff;
}
#endregion
internal float Serialize (StreamMarshaler streamBuffer, bool isLast, uint arcIndex)
{
//CfgGrammar.TraceInformation ("Arc::SerializeArcData");
CfgArc A = new CfgArc ();
A.LastArc = isLast;
A.HasSemanticTag = SemanticTagCount > 0;
A.NextStartArcIndex = (uint) (_end != null ? _end.SerializeId : 0);
if (_ruleRef != null)
{
A.RuleRef = true;
A.TransitionIndex = (uint) _ruleRef._iSerialize; //_pFirstState.SerializeId;
}
else
{
A.RuleRef = false;
if (_specialTransitionIndex != 0)
{
A.TransitionIndex = (uint) _specialTransitionIndex;
}
else
{
A.TransitionIndex = (uint) _iWord;
}
}
A.LowConfRequired = (_confidence < 0);
A.HighConfRequired = (_confidence > 0);
A.MatchMode = (uint) _matchMode;
// For new arcs SerializeId is INFINITE so we set it correctly here.
// For existing states we preserve the index from loading,
// unless new states have been added in, in which case the arc index,
// and hence the transition id have changed. There is a workaround in ReloadCmd
// to invalidate rules in this case.
_iSerialize = arcIndex;
streamBuffer.WriteStream (A);
return _flWeight;
}
internal static float SerializeExtraEpsilonWithTag (StreamMarshaler streamBuffer, Arc arc, bool isLast, uint arcIndex)
{
CfgArc A = new CfgArc ();
A.LastArc = isLast;
A.HasSemanticTag = true;
A.NextStartArcIndex = arcIndex;
A.TransitionIndex = 0;
A.LowConfRequired = false;
A.HighConfRequired = false;
A.MatchMode = (uint) arc._matchMode;
streamBuffer.WriteStream (A);
return arc._flWeight;
}
internal void SetArcIndexForTag (int iArc, uint iArcOffset, bool tagsCannotSpanOverMultipleArcs)
{
_startTags [iArc]._cfgTag.StartArcIndex = iArcOffset;
_startTags [iArc]._cfgTag.ArcIndex = iArcOffset;
if (tagsCannotSpanOverMultipleArcs)
{
_startTags [iArc]._cfgTag.EndArcIndex = iArcOffset;
}
}
internal void SetEndArcIndexForTags ()
{
//CfgGrammar.TraceInformation ("Arc::SerializeSemanticData");
if (_endTags != null)
{
foreach (Tag tag in _endTags)
{
tag._cfgTag.EndArcIndex = (uint) _iSerialize;
}
}
}
///
/// Compare the contents and number of output arcs from the start state.
/// The comparison is done by Arc content, number of arcs at then and the id for the last arc
///
///
///
///
/// Compare the contents and number of input arcs to the end state.
/// The comparison is done by Arc content, number of arcs at then and the id for the last arc
///
///
///
///
/// Compare the contents and start/end states of two arcs.
///
///
///
/// ();
}
_startTags.Add (tag);
}
internal void AddEndTag (Tag tag)
{
if (_endTags == null)
{
_endTags = new Collection ();
}
_endTags.Add (tag);
}
internal void ClearTags ()
{
_startTags = null;
_endTags = null;
}
static internal void CopyTags (Arc src, Arc dest, Direction move)
{
// Copy the start tags if any
if (src._startTags != null)
{
// if dest has not tags just move the collection
if (dest._startTags == null)
{
dest._startTags = src._startTags;
}
else
{
if (move == Direction.Right)
{
for (int i = 0; i < src._startTags.Count; i++)
{
dest._startTags.Insert (i, src._startTags [i]);
}
}
else
{
// if dest has tags add the ones from the source to the existing ones
foreach (Tag tag in src._startTags)
{
dest._startTags.Add (tag);
}
}
}
}
// Copy the end tags if any
if (src._endTags != null)
{
// if dest has not tags just move the collection
if (dest._endTags == null)
{
dest._endTags = src._endTags;
}
else
{
if (move == Direction.Right)
{
for (int i = 0; i < src._endTags.Count; i++)
{
dest._endTags.Insert (i, src._endTags [i]);
}
}
else
{
// if dest has tags add the ones from the source to the existing ones
foreach (Tag tag in src._endTags)
{
dest._endTags.Add (tag);
}
}
}
}
// No tags src associated with the 'src' anymore
src._startTags = src._endTags = null;
}
internal void CloneTags (Arc arc, List _tags, Dictionary endArcs, Backend be)
{
if (arc._startTags != null)
{
if (_startTags == null)
{
_startTags = new Collection ();
}
foreach (Tag tag in arc._startTags)
{
Tag newTag = new Tag (tag);
_tags.Add (newTag);
_startTags.Add (newTag);
endArcs.Add (tag, newTag);
#if DEBUG
newTag._be = be;
#endif
if (be != null)
{
int idTagName;
newTag._cfgTag._nameOffset = be.Symbols.Add (tag._be.Symbols.FromOffset (tag._cfgTag._nameOffset), out idTagName);
if (tag._cfgTag._valueOffset != 0 && tag._cfgTag.PropVariantType == System.Runtime.InteropServices.VarEnum.VT_EMPTY)
{
newTag._cfgTag._valueOffset = be.Symbols.Add (tag._be.Symbols.FromOffset (tag._cfgTag._valueOffset), out idTagName);
}
}
}
}
if (arc._endTags != null)
{
if (_endTags == null)
{
_endTags = new Collection ();
}
foreach (Tag tag in arc._endTags)
{
Tag newTag = endArcs [tag];
_endTags.Add (newTag);
endArcs.Remove (tag);
}
}
}
internal bool SameTags (Arc arc)
{
// no tags ok
bool same = _startTags == null && arc._startTags == null;
// Compare each tag if not null
if (!same && _startTags != null && arc._startTags != null && _startTags.Count == arc._startTags.Count)
{
same = true;
for (int i = 0; i < _startTags.Count; i++)
{
same &= _startTags [i] == arc._startTags [i];
}
}
// Compare end tags if the start tags are equal
if (same)
{
same = _endTags == null && arc._endTags == null;
// Compare each tag if not null
if (!same && _endTags != null && arc._endTags != null && _endTags.Count == arc._endTags.Count)
{
same = true;
for (int i = 0; i < _endTags.Count; i++)
{
same &= _endTags [i] == arc._endTags [i];
}
}
}
return same;
}
internal void ConnectStates ()
{
if (_end != null)
{
_end.InArcs.Add (this);
}
if (_start != null)
{
_start.OutArcs.Add (this);
}
}
///
/// Is the arc an epsilon transition?
///
///
/// Is this arc an arc without attached properties?
///
/// Is this arc an arc without attached properties?
internal bool IsPropertylessTransition
{
get
{
// Does not own semantic property & No tag references
return _startTags == null && _endTags == null;
}
}
#if DEBUG
override public string ToString ()
{
return (_start != null ? "#" + _start.Id.ToString (CultureInfo.InvariantCulture) : "") + " <- " + DebuggerDisplayTags () + " -> " + (_end != null ? "#" + _end.Id.ToString (CultureInfo.InvariantCulture) : "");
}
internal string DebuggerDisplayTags ()
{
StringBuilder sb = new StringBuilder ();
if (_iWord == 0 && (_ruleRef != null || _specialTransitionIndex != 0))
{
sb.Append ("<");
if (_ruleRef != null)
{
sb.Append (_ruleRef.Name);
}
else
{
switch (_specialTransitionIndex)
{
case CfgGrammar.SPWILDCARDTRANSITION:
sb.Append ("GARBAGE");
break;
case CfgGrammar.SPTEXTBUFFERTRANSITION:
sb.Append ("TEXTBUFFER");
break;
case CfgGrammar.SPDICTATIONTRANSITION:
sb.Append ("DICTATION");
break;
}
}
sb.Append (">");
}
else
{
sb.Append ("'");
sb.Append (_iWord == 0 ? new string (new char [] { (char) 0x3b5 }) : _be != null ? _be.Words [_iWord] : _iWord.ToString (CultureInfo.InvariantCulture));
sb.Append ("'");
}
if (_startTags != null || _endTags != null)
{
// Check if the tags are the same
bool same = _startTags != null && _endTags != null && _endTags.Count == _startTags.Count;
// Compare each tag if not null
for (int i = 0; same && i < _endTags.Count; i++)
{
same &= _startTags [i] == _endTags [i];
}
sb.Append (" (");
if (_startTags != null)
{
bool first = true;
foreach (Tag tag in _startTags)
{
if (!first)
{
sb.Append ("|");
}
sb.Append (GetSemanticTag (tag));
first = false;
}
}
else
{
sb.Append ("-");
}
if (!same)
{
sb.Append (",");
if (_endTags != null)
{
bool first = true;
foreach (Tag tag in _endTags)
{
if (!first)
{
sb.Append ("|");
}
sb.Append (GetSemanticTag (tag));
first = false;
}
}
else
{
sb.Append ("-");
}
}
sb.Append (")");
}
return sb.ToString ();
}
#endif
#endregion
//********************************************************************
//
// Internal Properties
//
//********************************************************************
#region internal Properties
internal int SemanticTagCount
{
get
{
return _startTags == null ? 0 : _startTags.Count;
}
}
internal State Start
{
set
{
if (value != _start)
{
if (_start != null)
{
_start.OutArcs.Remove (this);
}
_start = value;
if (_start != null)
{
_start.OutArcs.Add (this);
}
}
}
get
{
return _start;
}
}
internal State End
{
set
{
// If no change, then do nothing
if (value != _end)
{
if (_end != null)
{
_end.InArcs.Remove (this);
}
_end = value;
if (_end != null)
{
_end.InArcs.Add (this);
}
}
}
get
{
return _end;
}
}
internal int WordId
{
get
{
return _iWord;
}
}
internal Rule RuleRef
{
set
{
if ((_start != null && !_start.OutArcs.IsEmpty) || (_end != null && !_end.InArcs.IsEmpty))
{
throw new InvalidOperationException ();
}
_ruleRef = value;
}
get
{
return _ruleRef;
}
}
internal float Weight
{
set
{
_flWeight = value;
}
get
{
return _flWeight;
}
}
internal int SpecialTransitionIndex
{
get
{
return _specialTransitionIndex;
}
}
#if DEBUG
internal bool CheckingForExitPath
{
set
{
_fCheckingForExitPath = value;
}
get
{
return _fCheckingForExitPath;
}
}
internal Backend Backend
{
set
{
_be = value;
}
}
#endif
#endregion
//*******************************************************************
//
// Private Methods
//
//********************************************************************
#region private Methods
#if DEBUG
private string GetSemanticTag (Tag tag)
{
StringBuilder sb = new StringBuilder ();
string value;
string tagName = GetSemanticValue (tag._cfgTag, _be.Symbols, out value);
if (tagName != "SemanticKey")
{
if (tagName != "=")
{
sb.Append (tagName);
sb.Append ("=");
}
sb.Append (value);
}
else
{
sb.Append ("[");
sb.Append (value);
sb.Append ("]");
}
return sb.ToString ();
}
private static string GetSemanticValue (CfgSemanticTag tag, StringBlob symbols, out string value)
{
switch (tag.PropVariantType)
{
case VarEnum.VT_EMPTY:
value = tag._valueOffset > 0 ? symbols.FromOffset (tag._valueOffset) : tag._valueOffset.ToString (CultureInfo.InvariantCulture);
break;
case VarEnum.VT_I4:
case VarEnum.VT_UI4:
value = tag._varInt.ToString (CultureInfo.InvariantCulture);
break;
case VarEnum.VT_R8:
value = tag._varDouble.ToString (CultureInfo.InvariantCulture);
break;
case VarEnum.VT_BOOL:
value = tag._varInt == 0 ? "false" : "true";
break;
default:
value = "Unknown property type";
break;
}
return tag._nameOffset > 0 ? symbols.FromOffset (tag._nameOffset) : tag._nameOffset.ToString (CultureInfo.InvariantCulture); ;
}
#endif
// Sort arcs in a state based on type, and then on index.
// Arcs loaded froma file have their index preserved where possible. New dynamic states have index == INFINITE,
private int SortRank ()
{
int ret = 0;
if (_ruleRef != null)
ret = 0x1000000 + _ruleRef._cfgRule._nameOffset; // It's a rule - Place 2nd in list
if (_iWord != 0)
ret += 0x2000000 + _iWord;// It's a word - Place last in list
if (_specialTransitionIndex != 0)
ret += 0x3000000; // It's a special transition (dictation, text buffer, or wildcard)
return ret; // It's an epsilon -- We're first
}
#endregion
//*******************************************************************
//
// Private Fields
//
//*******************************************************************
#region Private Fields
// Transition start state
private State _start;
// Transition end state (or NULL for final state)
private State _end;
// Either word index or pRule but not both
private int _iWord;
// Rule ref
private Rule _ruleRef;
// If != 0 then transition to dictation, text buffer, or wildcard
private int _specialTransitionIndex;
private float _flWeight;
// current matching mode
private MatchMode _matchMode;
private int _confidence;
// Index of arc in table when serialized. Recreated when we reload grammar.
private uint _iSerialize;
// If non-null then has semantic tag associated with this
private Collection _startTags;
private Collection _endTags;
private static uint _serializeToken = 1;
#if DEBUG
// This is where the TransitionId comes from in engine interfaces.
private bool _fCheckingForExitPath;
private Backend _be;
#endif
#endregion
}
//*******************************************************************
//
// Internal Types
//
//********************************************************************
#region private Methods
internal enum Direction
{
Right,
Left
}
#endregion
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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