private void AddTryEnd(Handler handler)
{
Label tryEnd = CodeProvider.TryEnd(handler);
Queue <Handler> queue;
this.try_end_list.TryGetValue(tryEnd, out queue);
if (queue == null)
{
queue = new Queue <Handler> ();
this.try_end_list [tryEnd] = queue;
}
queue.Enqueue(handler);
AddTargetLabel(tryEnd);
}