[Cocci] rewrite C preprocessor

[Cocci] rewrite C preprocessor

[ron minnich]

Somebody asked me about a way to semantically patch
#ifdef X
to
#if configured(X)

I'm not sure I can rewrite cpp bits in coccinelle, I failed on my
first few attempts, but .. can I?

ron
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[Cocci] rewrite C preprocessor

[Michael Stefaniuc]

On 10/24/2012 11:59 PM, ron minnich wrote:
> Somebody asked me about a way to semantically patch
> #ifdef X
> to
> #if configured(X)
> 
> I'm not sure I can rewrite cpp bits in coccinelle, I failed on my
> first few attempts, but .. can I?
Use perl/sed/awk

bye
	michael

[Cocci] rewrite C preprocessor

[Håkon Løvdal]

On 24 October 2012 23:59, ron minnich <rminnich@gmail.com> wrote:
> Somebody asked me about a way to semantically patch
> #ifdef X
> to
> #if configured(X)

As already suggested, a script in sed/perl should be able to give you a
quick result for a relative low investment, although it would likely not
distinguish comments/strings from code and possibly not be so robust,
so there is a need for manual inspection of the result.

If you want to write something that is more robust I would suggest taking
the source of stripcmt, http://www.bdc.cx/software/stripcmt/, and modify
that. The source of that tool is very simple, just complicated enough
to keep a states of being inside strings/comments, and then some code
to remove comments which you can remove and then just add some code to
recognise #ifdef X for your task.

BR H?kon L?vdal
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