Hello Bengt,
Bengt Richter <[email protected]> writes:
[...]
> What do you think of using (ice-9 match) to make a universal
> throwage-formatter,
> with the idea of making readable top level code for how exceptions become
> messages on screen?
>
> I started a hack to explore the (throw 'whatever any ...) space, beginning
> like
>
> (use-modules (ice-9 match))
> (define (make-exception-message key rest)
> (begin
> (let*((l (cons key rest)))
> (match l
> (('system-error subr message args data ...)
> ;; e.g. thrown with key 'system-error: ("open-fdes" "~A" ("No
> such file or directory") (2))
> (format #f (string-append "match-1: subr ~s threw '~s " message "
> sterror: ~s") subr key args (strerror (car (car data)))))
>
> (('signal any ...)
> ;; not yet implemented
> (format #f "match-2: <NYI:unix signal no> any: ~s" any))
Are you proposing to refactor (ice-9 exceptions) so that it's simpler to
follow a condition message is formed for a given exception type?
Maxim
