[PATCH 2 of 3 V2] manifest: make uses of _mancache aware of contexts

[Yuya Nishihara]

On Wed, 31 Aug 2016 13:30:20 -0700, Durham Goode wrote:
> # HG changeset patch
> # User Durham Goode <durham at fb.com>
> # Date 1472518929 25200
> #      Mon Aug 29 18:02:09 2016 -0700
> # Node ID 59bc68e1d78538bb83f60c0d4f9342ec0a8893bf
> # Parent  abce9af35512d8589683d94f34f6d8aa21163568
> manifest: make uses of _mancache aware of contexts

> --- a/mercurial/manifest.py
> +++ b/mercurial/manifest.py
> @@ -1128,7 +1128,11 @@ class manifest(manifestrevlog):
>          if node == revlog.nullid:
>              return self._newmanifest() # don't upset local cache
>          if node in self._mancache:
> -            return self._mancache[node]
> +            cached = self._mancache[node]
> +            if (isinstance(cached, manifestctx) or
> +                isinstance(cached, treemanifestctx)):
> +                cached = cached.read()

manifestctx.read() is added by the next patch, so tests fail at this revision.
But that wouldn't be a good reason enough to rework this series.