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From: Julia Lawall <julia.lawall@lip6.fr>
To: Timur Tabi <timur@kernel.org>
Cc: cocci <cocci@systeme.lip6.fr>
Subject: Re: [Cocci] How to concatenate identifier with text?
Date: Fri, 24 May 2019 21:38:13 +0200 (CEST)
Message-ID: <alpine.DEB.2.21.1905242137000.2514@hadrien> (raw)
In-Reply-To: <CAOZdJXWVyC3o6vVbNEakhr8p4vX4j3wkkSyJg77-hcQ7Nqhf=g@mail.gmail.com>



On Fri, 24 May 2019, Timur Tabi wrote:

> @@
> identifier func;
> @@
> func(...) {
> <+...
>      .... stuff
> +   goto func_exit;
> +}
> ...+>
> }
>
> So if I have this code:
>
> void myfunc(int x)
> {
> }
>
> I want it to look like this:
>
> void myfunc(int x)
> {
>     goto myfunc_exit;
> }
>
> My problem is that cocci takes "func_exit" literally.  I tried
> func##_exit, but that didn't work.  How do I make this work?

Python.  You need one rule to collect the func name, then a python rule to
create the new identifier you want, and then a third rule to do the
transformation.  See coccinelle/demos/pythontococci.cocci

julia
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Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-24 19:13 Timur Tabi
2019-05-24 19:36 ` Timur Tabi
2019-05-24 19:38   ` Julia Lawall
2019-06-11 21:51     ` Timur Tabi
2019-06-11 21:58       ` Timur Tabi
2019-06-12  7:12         ` [Cocci] Wider usage of “fresh identifiers”? Markus Elfring
2019-06-12  5:25       ` [Cocci] How to concatenate identifier with text? Julia Lawall
2019-05-24 19:38 ` Julia Lawall [this message]

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