147 

   147 

   148 class revlogdag(revlogbaseddag):

   148 class revlogdag(revlogbaseddag):

   149     '''dag interface to a revlog'''

   149     '''dag interface to a revlog'''

   150 

   150 

   151     def __init__(self, revlog):

   151     def __init__(self, revlog):

   153 

   153 

   154     def _getheads(self):

   154     def _getheads(self):

   155         return [r for r in self._revlog.headrevs() if r != nullrev]

   155         return [r for r in self._revlog.headrevs() if r != nullrev]

   156 

   156 

   157     def parents(self, ix):

   157     def parents(self, ix):