public virtual Differences VisitCollectionEnumerator(CollectionEnumerator ce1, CollectionEnumerator ce2){
Differences differences = new Differences(ce1, ce2);
if (ce1 == null || ce2 == null){
if (ce1 != ce2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
CollectionEnumerator changes = (CollectionEnumerator)ce2.Clone();
CollectionEnumerator deletions = (CollectionEnumerator)ce2.Clone();
CollectionEnumerator insertions = (CollectionEnumerator)ce2.Clone();
Differences diff = this.VisitExpression(ce1.Collection, ce2.Collection);
if (diff == null){Debug.Assert(false); return differences;}
changes.Collection = diff.Changes as Expression;
deletions.Collection = diff.Deletions as Expression;
insertions.Collection = diff.Insertions as Expression;
Debug.Assert(diff.Changes == changes.Collection && diff.Deletions == deletions.Collection && diff.Insertions == insertions.Collection);
differences.NumberOfDifferences += diff.NumberOfDifferences;
differences.NumberOfSimilarities += diff.NumberOfSimilarities;
if (differences.NumberOfDifferences == 0){
differences.Changes = null;
differences.Deletions = null;
differences.Insertions = null;
}else{
differences.Changes = changes;
differences.Deletions = deletions;
differences.Insertions = insertions;
}
return differences;
}
public override CollectionEnumerator VisitCollectionEnumerator(CollectionEnumerator ce)
{
if (ce == null) return null;
return base.VisitCollectionEnumerator((CollectionEnumerator)ce.Clone());
}