gnupic: gpasm-0.10.4 alpha error messages
Subject:
Re: gpasm-0.10.4 alpha error messages
From:
Craig Franklin ####@####.####
Date:
14 Nov 2002 14:16:32 -0000
Message-Id: <3DD3AFA0.7290439E@attbi.com>
My goal for gpasm is to generate identical outputs when error free
sources are assembled. When an input source has an error, the user
should be alerted in some way. In this case gpasm worked. If this is
your only complaint, I can take a vacation.
When the source has an error it is very difficult to respond in exactly
the same way as mpasm. I don't have the mpasm source code. They have a
completely different parser, so there will always be differences.
Whenever possible, I have tried to make them similar, but it isn't my
first priority.
In general, always fix the parse errors first. They often cause other
errors.
I will look into this missing quote condition, but I may not change
gpasm's behavior.
Andy wrote:
>
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> I came across a difference between gpasm-0.10.4 and MPASM 3.20 and thought I
> would solicit your comments on it.
>
> The line that caused me problems was:
>
> GOTO FOO
> .
> .
> .
>
> FOO MOVLW A'F
>
> Note the missing closing quote
>
> gpasm generated the following error:
>
> work/pcr1k/pcr1k01b.asm:854:Error [113] Symbol not previously defined (FOO).
> work/pcr1k/pcr1k01b.asm:856:Error [103] parse error
>
> This error message sent me of in completely the wrong direction because
> initially I didn't spot the missing quote while focussing on the error
> message.
>
> After a frustrating few minutes where I couldn't find any error associated
> with the label FOO I decided to boot my Windows system and run MPLAB to see
> if the same message was generated.
>
> MPLAB generated a warning rather than an error and helpfully pointed out that
> I was missing the quote.
>
> Now I can accept that the error message generated by gpsim is partially
> correct in that it is a parse error because the line is syntactically
> incomplete but I was wondering if it would be possible to modify gpasm to
> parse lines better and generate more helpful error messages in the way that
> MPLAB does?
>
> Regards
>
> Andy
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