gnupic: gpasm chokes on #IF
Subject:
Re: gpasm chokes on #IF
From:
Craig Franklin ####@####.####
Date:
17 Apr 2004 20:52:16 +0100
Message-Id: <1082231508.4479.13.camel@r2d2>
On Sat, 2004-04-17 at 13:51, David Willmore wrote:
> > There is not a separate preprocessor. It is part of gpasm's lexer.
> > gpasm supports most of the documented features of mpasm. It also
> > supports some of the undocumented features.
>
> I know. ;) It's just that the documentation uses that term, so I
> thought I'd use it, too. ;) A little fiction never hurts.
>
> > AFAIK, the mpasm manual and the help in mplab only describe IF without
> > the #. #if is an undocumented extension. These extensions change from
> > release to release. For example, in the past #endif was only valid if
> > it started on column 1. #ifdef could start on any column. Now #endif
> > can be placed anywhere. This makes supporting gpasm a little bit of a
> > challenge. I remember testing #if a couple of years back and mpasm
> > didn't support it.
>
> How do commercial PIC developers live with that? I guess if it always
> gets more inclusive, it's less risky, but I'd hate to have a new version
> of the IDE (maybe necessary for *one* of the parts I'm using) break some
> code for an older part. That sure makes regression testing a bear. You'd
> need to keep a full regression environment around. *shudder*
>
> > I will retest mpasm and update gpasm's "preprocessor".
>
> Optionally, I could poke the author with a sharp stick and tell him this
> isn't a feature he should feel safe in relying on. I think I'll do that
> anyway. This code is for the PIC-EL board (www.amqrp.org) which is part
> of the ELMER-160 project. A project that is trying to teach amateur radio
> people how to program PICs. As an example piece of code, we should probably
> stick to proper, documented features of MPASM/MPLAB. I'll go sharpen a
> stick...
>
I have changed gpasm. I will commit it to cvs in a couple of hours.
> Thanks Craig.
>
> Cheers,
> David
>
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