Re: push parser

[Joel E. Denny]

On Sun, 10 Dec 2006, Bob Rossi wrote:

> On Mon, Dec 04, 2006 at 06:15:46PM -0500, Joel E. Denny wrote:
> > 6. I read somewhere in this thread that yypushparse will never modify its 
> > yynchar, yynlval, and yynlloc arguments.  Shouldn't they be const then?
> 
> Sure. Here's a patch, what do you think?

I would appreciate Paul Eggert's opinion on arguments with multiple 
const's like this one:

  const YYSTYPE * const yynlval

I'm pretty sure he'll at least want to see the first const moved:

  YYSTYPE const * const ynlval

He may want to see the second const removed.

Sorry, I'm not sure why I listed yynchar.  I was actually just thinking of 
pointer arguments.

> Please give me direction on
> what else you would like me to modify in push.c. I'm not sure how many
> items on the original list you posted you still consider valid.

How about replacing yypstate_init with yypstate_new and yypstate_delete?  
Sorry, I forgot about this during the previous renaming, but this will 
probably be a nice self-contained patch anyway.  Also, did you look into 
using b4_c_function_def for these definitions?  If you agree with these 
ideas, you could proceed with them while we wait for Paul's response to 
the above.

> I would definatly like to look at the members in the struct yypstate
> (with someone who understands them) to make sure they all belong there.

Yes, I think we should.  However, I'm not intimately familiar with these, 
so it takes me a while to figure them out.  If you don't mind, we can 
probably put this off a bit until we settle the other issues.  We might 
figure some out along the way anyway.