1597     def read(self, node):

  1598         if node == revlog.nullid:

  1599             return self._newmanifest() # don't upset local cache

  1600         if node in self._mancache:

  1601             cached = self._mancache[node]

  1602             if (isinstance(cached, manifestctx) or

  1603                 isinstance(cached, treemanifestctx)):

  1604                 cached = cached.read()

  1605             return cached

  1606         if self._treeondisk:

  1607             def gettext():

  1608                 return self.revision(node)

  1609             def readsubtree(dir, subm):

  1610                 return self.dirlog(dir).read(subm)

  1611             m = self._newmanifest()

  1612             m.read(gettext, readsubtree)

  1613             m.setnode(node)

  1614             arraytext = None

  1615         else:

  1616             text = self.revision(node)

  1617             m = self._newmanifest(text)

  1618             arraytext = array.array('c', text)

  1619         self._mancache[node] = m

  1620         if arraytext is not None:

  1621             self.fulltextcache[node] = arraytext

  1622         return m

  1623