Re: [Cocci] Replacing #define directives with the help of SmPL

[Julia Lawall <julia.lawall@inria.fr>]

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On Sun, 28 Mar 2021, Markus Elfring wrote:

> >> Another SmPL script example:
> >>
> >> @display2@
> >> identifier i;
> >> expression e;
> >> @@
> >> *#define i e
> >>
> >>
> >> elfring@Sonne:~/Projekte/Coccinelle/janitor> spatch show_define_usage2.cocci /usr/include/pipewire-0.3/pipewire/client.h
> >> …
> >> -#define PW_CLIENT_EVENT_INFO		0
> >> …
> >
> > And what is the problem here?
>
> Can you help anyhow according to dealing with the longest common substring problem
> in combination with discussed capabilities of the semantic patch language?

You can implement whatever you want in python.

>
>
> > This may (or may not) give you the right grouping, but you will still have
> > to ensure that the elements end up in the right order, unless you want to
> > provide all the values explicitly.
>
> Some information from #define directives can be imported into symbol tables
> for later transformations (on demand).
> Source code positions need to be recorded accordingly, don't they?

If you want to record the position of something you can use a position
variable.

julia

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