public virtual Differences VisitQueryUnion(QueryUnion union1, QueryUnion union2){
Differences differences = new Differences(union1, union2);
if (union1 == null || union2 == null){
if (union1 != union2) differences.NumberOfDifferences++; else differences.NumberOfSimilarities++;
return differences;
}
QueryUnion changes = (QueryUnion)union2.Clone();
QueryUnion deletions = (QueryUnion)union2.Clone();
QueryUnion insertions = (QueryUnion)union2.Clone();
// union1.LeftSource;
// union1.RightSource;
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 VisitQueryUnion(QueryUnion union){
if (union == null) return null;
return base.VisitQueryUnion((QueryUnion)union.Clone());
}