Re: [Cocci] Checking support for compound expressions (according to #define directives)

From: Julia Lawall <julia.lawall@inria.fr>
To: Markus Elfring <Markus.Elfring@web.de>
Cc: Coccinelle <cocci@systeme.lip6.fr>
Subject: Re: [Cocci] Checking support for compound expressions (according to #define directives)
Date: Mon, 5 Apr 2021 09:09:01 +0200 (CEST)	[thread overview]
Message-ID: <alpine.DEB.2.22.394.2104050907270.2981@hadrien> (raw)
In-Reply-To: <b9f6aceb-7e68-303d-bd1e-d41a7992b58b@web.de>

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On Mon, 5 Apr 2021, Markus Elfring wrote:

> > Thanks for the simpler examples.
>
> Would you like to support another search pattern by the means of
> the semantic patch language?
>
>
> @display@
> identifier i =~ "^(?:[A-Z]+_){3,3}[A-Z]+", x;
> constant c =~ "\"";
> @@
> *#define i x c
>
>
> elfring@Sonne:~/Projekte/Coccinelle/janitor> spatch --parse-cocci show_define_usage6.cocci
> …
> minus: parse error:
>   File "show_define_usage6.cocci", line 5, column 13, charpos = 92
>   around = 'c',
>   whole content = *#define i x c

No.  You have to match the expression and then check it using python.  YOu
can write:

@@
identifier i;
expression e : script:python() { ... python code to ceck e };
@@

#define i e

julia

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