Re: Error definition

On Fri, 4 Feb 2022 at 12:13, Tom Hillman <tom@expertml.com> wrote:
>
> I don't think you are wrong, although I think that any parser is necessarily also a "recogniser": to "recognise" a piece of text, all you can really do is try to parse it and see if it succeeds...
>
> I suppose there may also be errors that are due to reasons other than the input not being a sentence in the grammar: we really ought to think about having some standard error codes.

Request an agenda item for this Tues 8th telcon please

regards



>
> _________________
> Tomos Hillman
> eXpertML Ltd
> +44 7793 242058
> On 4 Feb 2022, 12:00 +0000, Bethan Tovey-Walsh <accounts@bethan.wales>, wrote:
>
> I’m inclined to agree with Dave. I wouldn’t call it an error if the implementation were only a recogniser: it would make sense in that context for the outcomes “yes, this is a sentence” and “no, this is not a sentence” to be of (potentially) equal interest and value. But the point of the ixml parser is to provide vxml output, not to tell you whether your input string is a valid sentence or not. If it can’t provide that output, I’d call that an error.
>
> Happy to hear why I’m wrong, though; my instinctive understanding is sometimes way off base.
>
> Sent from my iPhone
>
> On 4 Feb 2022, at 09:36, Dave Pawson <dave.pawson@gmail.com> wrote:
>
> O Regan, Gonorill, your old kind father
> Whose franke heart gaue you all, O that way madnes lies,
> Let me shun that, no more of that.
> -Bill S
>
> When I compile a programming language program,
> I may get warnings, but (to me) the compile either
> succeeds or fails.
>
> I would hope that with an ixml grammar and input string
> I can rely on the same reasoning? Pass / fail (or pass,
> with warnings). From this I expect my vxml output to
> be complete, no 'missing bits'?
>
> I'm using a Saxon class implementation, so if it has a bug
> I can look for a blue moon.
>
> Is this assumption reasonable / agreed?
>
>
>
> regards
>
>
>
>
> --
> Dave Pawson
> XSLT XSL-FO FAQ.
> Docbook FAQ.
>
>
>


-- 
Dave Pawson
XSLT XSL-FO FAQ.
Docbook FAQ.

Received on Friday, 4 February 2022 12:26:43 UTC