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  • Committer: John Arbash Meinel
  • Date: 2009-06-10 18:58:02 UTC
  • mto: (4371.4.5 vila-better-heads)
  • mto: This revision was merged to the branch mainline in revision 4449.
  • Revision ID: john@arbash-meinel.com-20090610185802-wsybzjfil447yhy2
Change VF.annotate to use the new KnownGraph code.

This shows a significant savings in the time for 'annotate NEWS', of about 5s/20s
for knit formats, and 45s => 20s for GC formats.


Also, factor the code into a helper, so that we can prepare for writing
a pyrex version.

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bzrlib/knit.py
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        """Create a heads provider for resolving ancestry issues."""
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        if self._heads_provider is not None:
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            return self._heads_provider
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        parent_provider = _mod_graph.DictParentsProvider(
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            self._revision_id_graph)
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        graph_obj = _mod_graph.Graph(parent_provider)
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        head_cache = _mod_graph.FrozenHeadsCache(graph_obj)
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        self._heads_provider = head_cache
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        return head_cache
 
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        # graph_obj = _mod_graph.Graph(parent_provider)
 
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        # head_cache = _mod_graph.FrozenHeadsCache(graph_obj)
 
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        self._heads_provider = _mod_graph.KnownGraph(self._revision_id_graph)
 
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        return self._heads_provider
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    def annotate(self, key):
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        """Return the annotated fulltext at the given key.