PatchRegex ReunifyWithFlanking(PatchRegex left, PatchRegex unification, PatchRegex right)
{
ArrayList rgStringDisjuncts = new ArrayList();
foreach (Disjunct disjunctUnification in unification.DisjunctCollection)
{
foreach (Disjunct disjunctLeft in left.DisjunctCollection)
{
AASetSequence newLeftDisjunctOrNull = UnifyWithBeforeOrNull(disjunctLeft.Core.Count, disjunctLeft.FullAsAASetSequence, disjunctUnification.Before);
if (newLeftDisjunctOrNull != null)
{
Debug.Assert(newLeftDisjunctOrNull[0] != AASet.OptionalAny && newLeftDisjunctOrNull[newLeftDisjunctOrNull.Count - 1] != AASet.OptionalAny); // real assert - disjuncts never start or end with AASet.OptionalAny
foreach (Disjunct disjunctRight in right.DisjunctCollection)
{
AASetSequence newRightDisjunctOrNull = UnifyWithAfterOrNull(disjunctRight.Core.Count, disjunctRight.FullAsAASetSequence, disjunctUnification.After);
if (newRightDisjunctOrNull != null)
{
Debug.Assert(newRightDisjunctOrNull[0] != AASet.OptionalAny && newRightDisjunctOrNull[newRightDisjunctOrNull.Count - 1] != AASet.OptionalAny); // real assert - disjuncts never start or end with AASet.OptionalAny
Concatenate(newLeftDisjunctOrNull, disjunctUnification, newRightDisjunctOrNull, ref rgStringDisjuncts);
}
}
}
}
}
if (rgStringDisjuncts.Count == 0)
{
return(null);
}
else
{
PatchRegex newRegex = PatchRegex.GetInstance(rgStringDisjuncts, PatchRegexFactory);
return(newRegex);
}
}
/// <summary>
/// Example: Suppose "1" is "[TNMSQC]" and the patchPattern is "11T11" and the other pattern is "T1111Z"
/// then UnifyOrNull returns "T1T11Z" because that is the most general pattern
/// such that "11T11".IsMatch("T1T11Z") is true and "T1111Z".IsMatch("T1T11Z") is true.
/// Example: Suppose "1" is "[TNMSQC]" and the patchPattern is "11T11" and the other pattern is "A1111"
/// then UnifyOrNull returns null because there is no pattern X such that
/// such that "11T11".IsMatch(X) is true and "A1111".IsMatch(X) is true.
/// </summary>
override public PatchPattern UnifyOrNull(PatchPattern other)
{
SpecialFunctions.CheckCondition(CoreLength <= other.CoreLength); //!!!raise error
SpecialFunctions.CheckCondition(other is PatchRegex); //!!!raise error
ArrayList newDisjuncts = new ArrayList();
foreach (Disjunct disjunct in DisjunctCollection)
{
foreach (Disjunct disjunctOther in (other as PatchRegex).DisjunctCollection)
{
disjunct.AppendUnifications(disjunctOther, ref newDisjuncts);
}
}
if (newDisjuncts.Count == 0)
{
string sMiniVaccine = string.Format("{0}{1}{0}", new string('_', (int)Math.Max(MaxLength, other.MaxLength)), other.CoreRealization());
if (IsMatch(sMiniVaccine))
{
Debug.WriteLine(string.Format("Warning: two patterns would unify except for flanking regions that could be ignored by requiring that nothing be appending to the component. {0}, {1}", this, other));
}
return(null);
}
else
{
PatchPattern patchPatternUnified = PatchRegex.GetInstance(newDisjuncts, PatchRegexFactory);
string sMiniVaccine = string.Format("{0}{1}{0}", new string('_', (int)Math.Max(MaxLength, other.MaxLength)), patchPatternUnified.CoreRealization());
Debug.Assert(IsMatch(sMiniVaccine)); // real assert
Debug.Assert(other.IsMatch(sMiniVaccine)); // real assert
return(patchPatternUnified);
}
}
public override PatchPattern GetInstance(string expression)
{
if (Hashtable.ContainsKey(expression))
{
PatchPattern patchPattern = (PatchPattern)Hashtable[expression];
return(patchPattern);
}
else
{
PatchPattern patchPattern = PatchRegex.GetInstance(expression, this);
SpecialFunctions.CheckCondition(patchPattern.ToString() == expression, "PatchPattern expression is not in standard form."); //!!!raise error
Hashtable.Add(expression, patchPattern);
return(patchPattern);
}
}
static private PatchPattern MergePatchPatterns(ArrayList rgOut, PatchRegexFactory patchRegexFactory)
{
ArrayList rgStringDisjuncts = new ArrayList();
foreach (PatchRegex aPatchRegex in rgOut)
{
Debug.Assert(aPatchRegex != null); // real assert
foreach (Disjunct aDisjunct in aPatchRegex.DisjunctCollection)
{
rgStringDisjuncts.Add(aDisjunct.FullAsAASetSequence.ToString());
}
}
PatchRegex newRegex = PatchRegex.GetInstance(rgStringDisjuncts, patchRegexFactory);
return(newRegex);
}
public override PatchPattern GetInstance(ICollection disjunctStringCollection)
{
PatchRegex patchRegex = PatchRegex.GetInstance(disjunctStringCollection, this);
if (Hashtable.ContainsKey(patchRegex.ToString()))
{
PatchPattern patchPattern = (PatchPattern)Hashtable[patchRegex.ToString()];
return(patchPattern);
}
else
{
PatchPattern patchPattern = patchRegex;
Hashtable.Add(patchPattern.ToString(), patchPattern);
return(patchPattern);
}
}
static private PatchRegex Concatenate(params PatchRegex[] patchRegexParams)
{
SpecialFunctions.CheckCondition(patchRegexParams.Length > 0); //!!!raise error
PatchRegexFactory patchRegexFactory = null;
//ArrayList rgSegment = new ArrayList();
double combinations = 1;
AASetSequence sbLuckyOne = AASetSequence.GetInstance();
foreach (PatchRegex patchRegex in patchRegexParams)
{
//rgSegment.AddRange(patchRegex.SegmentCollection);
combinations *= patchRegex.DisjunctCollection.Length;
if (combinations == 1)
{
sbLuckyOne.Append(patchRegex.DisjunctCollection[0].FullAsAASetSequence);
}
if (patchRegexFactory == null)
{
patchRegexFactory = patchRegex.PatchRegexFactory;
}
else
{
Debug.Assert(patchRegexFactory == patchRegex.PatchRegexFactory); //this says that all PatchRegex's must come from the same Hashtable
}
}
if (combinations == 1)
{
Debug.Assert(sbLuckyOne[0] != AASet.OptionalAny && sbLuckyOne[sbLuckyOne.Count - 1] != AASet.OptionalAny); // real assert - disjuncts can't start or end with AASet.OptionalAny
string[] rgDisjuncts = new string[] { sbLuckyOne.ToString() };
PatchRegex patchRegex = PatchRegex.GetInstance(rgDisjuncts, patchRegexFactory);
return(patchRegex);
}
else
{
Debug.Fail("how may combinations?");
Debug.WriteLine("place of interest");
return(null);
}
// else if (rgSegment.Count > 1 && combinations == 2)
// {
// Segment segment = TurnToOneSegment(rgSegment, patchRegexFactory);
// rgSegment.Clear();
// rgSegment.Add(segment);
// }
}
//Return an ArrayList of PatchRegex[] pairs
private ArrayList SplitLeft(int overlap)
{
SpecialFunctions.CheckCondition(0 < overlap && overlap < CoreLength); //!!!raise error
ArrayList rgrg = new ArrayList();
Disjunct[][] rgrgDisjuncts = SplitDisjuncts(overlap);
foreach (Disjunct[] splitDisjunct in rgrgDisjuncts)
{
PatchRegex patchRegexLeft = PatchRegex.GetInstance(splitDisjunct[0].FullAsAASetSequence.ToString(), PatchRegexFactory);
PatchRegex patchRegexRight = PatchRegex.GetInstance(splitDisjunct[1].FullAsAASetSequence.ToString(), PatchRegexFactory);
rgrg.Add(new PatchRegex[] { patchRegexLeft, patchRegexRight });
}
Debug.Assert(rgrg.Count == rgrgDisjuncts.Length); // real assert
return(rgrg);
}
