public virtual Differences VisitQueryExists(QueryExists exists1, QueryExists exists2){
Differences differences = new Differences(exists1, exists2);
if (exists1 == null || exists2 == null){
if (exists1 != exists2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
QueryExists changes = (QueryExists)exists2.Clone();
QueryExists deletions = (QueryExists)exists2.Clone();
QueryExists insertions = (QueryExists)exists2.Clone();
// exists1.Source;
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 Node VisitQueryExists(QueryExists exists){
if (exists == null) return null;
return base.VisitQueryExists((QueryExists)exists.Clone());
}
