public virtual Differences VisitQuerySingleton(QuerySingleton singleton1, QuerySingleton singleton2){
Differences differences = new Differences(singleton1, singleton2);
if (singleton1 == null || singleton2 == null){
if (singleton1 != singleton2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
QuerySingleton changes = (QuerySingleton)singleton2.Clone();
QuerySingleton deletions = (QuerySingleton)singleton2.Clone();
QuerySingleton insertions = (QuerySingleton)singleton2.Clone();
//singleton1.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 VisitQuerySingleton(QuerySingleton singleton){
if (singleton == null) return null;
return base.VisitQuerySingleton((QuerySingleton)singleton.Clone());
}