linux-kernel - Re: [Cocci] [PATCH 4/4] coccicheck: add indexing enhancement options

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Message-ID: <alpine.DEB.2.02.1606110800360.2114@localhost6.localdomain6>
Date:	Sat, 11 Jun 2016 08:05:54 +0200 (CEST)
From:	Julia Lawall <julia.lawall@...6.fr>
To:	Wolfram Sang <wsa@...-dreams.de>
cc:	"Luis R. Rodriguez" <mcgrof@...nel.org>, cocci@...teme.lip6.fr,
	mmarek@...e.com, linux-kernel@...r.kernel.org
Subject: Re: [Cocci] [PATCH 4/4] coccicheck: add indexing enhancement
 options



On Sat, 11 Jun 2016, Wolfram Sang wrote:

> 
> > It's not as efficient as glimpse because the query language is simpler.  
> 
> Interesting, what is missing compared to glimpse?

Glimpse allows queries that are arbitrary formulas, up to a limited level 
of complexity, involving both && and ||.  For idutils, Coccinelle runs lid 
on each of the tokens in the formula, and then does unions and 
intersections on the result.

julia

> > So more filtering has to be done at the ocaml level.  But it's probably 
> > fine in most cases.
> 
> For me, it has two advantages over glimpse:
> 
> a) it is in the debian package repository
> b) the same database can be used with the code browser 'seascope'
>    which can do nice things by feeding ctags on the fly with data
>    from id-utils.
> 
> Mileages vary, of course, just wanted to mention it to give pointers.
> 
>