mercurial/branchmap.py
branchstable
changeset 25266 38117278f295
parent 24728 75688a6f0bca
child 25660 328739ea70c3
equal deleted inserted replaced
25265:e16456831516 25266:38117278f295
   339         """Return branch name and close flag for rev, using and updating
   339         """Return branch name and close flag for rev, using and updating
   340         persistent cache."""
   340         persistent cache."""
   341         changelog = self._repo.changelog
   341         changelog = self._repo.changelog
   342         rbcrevidx = rev * _rbcrecsize
   342         rbcrevidx = rev * _rbcrecsize
   343 
   343 
       
   344         # avoid negative index, changelog.read(nullrev) is fast without cache
       
   345         if rev == nullrev:
       
   346             return changelog.branchinfo(rev)
       
   347 
   344         # if requested rev is missing, add and populate all missing revs
   348         # if requested rev is missing, add and populate all missing revs
   345         if len(self._rbcrevs) < rbcrevidx + _rbcrecsize:
   349         if len(self._rbcrevs) < rbcrevidx + _rbcrecsize:
   346             self._rbcrevs.extend('\0' * (len(changelog) * _rbcrecsize -
   350             self._rbcrevs.extend('\0' * (len(changelog) * _rbcrecsize -
   347                                          len(self._rbcrevs)))
   351                                          len(self._rbcrevs)))
   348 
   352