public static IEnumerable AsEnumerable(this Query query, bool revertAll = false)
{
try
{
Trail.Enter();
var nextQuery = query;
while (nextQuery != null)
{
var currentQuery = nextQuery;
var result = currentQuery.Run();
switch (result.Type)
{
case QueryResultType.ChoicePoint:
nextQuery = result.Continuation;
Trail.Current.ChoicePoint(result.Alternate);
break;
case QueryResultType.Success:
yield return(null);
nextQuery = Trail.Current.Backtrack();
break;
default:
nextQuery = Trail.Current.Backtrack();
break;
}
}
}
finally
{
Trail.Exit(revertAll);
}
}