[PATCH 1 of 2 STABLE V2] context: add 'changectx.dirs()' to recognize directory matching pattern

[Matt Mackall]

On Sun, 2012-02-19 at 19:25 +0900, FUJIWARA Katsunori wrote:
> # HG changeset patch
> # User FUJIWARA Katsunori <foozy at lares.dti.ne.jp>
> # Date 1329646846 -32400
> # Branch stable
> # Node ID 59430cdb845b58c916547dd5623ee438abcb2814
> # Parent  0e0060bf2f440d5cc33e5f36d99868a5380debd4
> context: add 'changectx.dirs()' to recognize directory matching pattern

I don't want util.adddirs (and if I did want it, I would want it in its
own patch!). It's way too special-purpose for util and indeed only has
one user.

> +    @propertycache
> +    def _dirs(self):
> +        dirs = set()
> +        for f in self._manifest:
> +            util.adddirs(f, dirs)
> +        return dirs

You've added a scope lookup and a function call (to a single use
function) to the inner loop. Both unfortunate things for a language with
effectively no optimization. Much better to just inline adddirs here.

I still think we should have a workingctx version of this method that
reuses the dirstate directory data rather than building another copy.

>          if not parentworking:
>              def bad(f, msg):
> -                if f not in ctx1:
> +                # 'f' may be a directory pattern from 'match.files()',
> +                # so 'f not in ctx1' is not enough
> +                if (f not in ctx1) and (f not in ctx1.dirs()):
>                      self.ui.warn('%s: %s\n' % (self.dirstate.pathto(f), msg))
>              match.bad = bad

Separate patch, please. Unnecessary parens.

-- 
Mathematics is the supreme nostalgia of our time.