Re: [cocci] Python script interacting with non-matching files?

On Thu, 12 Mar 2026, Alice Lee wrote:

>
> Hello,
>
> I am trying to use Coccinelle to search C code bases and I have a few
> questions.
>
>  1. Can a python script within a Coccinelle file somehow access the names of
>     files that are processed without matching the search? (Maybe there is
>     some "match all" idiom that would let me get the name of every file and
>     then move on to the relevant search?)

I don't completely understand the question.  You can attach a position
variable to some matched code and then print the file name associated with
that code:

@r@
position p;
@@

foo@p();

@script:python@
p << r.p;
@@

print p[0].file  // put proper python code here

>  2. Similarly, can a python script tell that parsing failed for a particular
>     file?

No, python doesn't have an access to the information about what could be
parsed.  There is --verbose-parsing.  But parsing rarely fails for a whole
file.  If it can't parse one thing, it will just move on to the next thing
and try from there.

julia

> Thank you,
> Alice Lee    
>
>
>