From: Andy Wingo <wingo@pobox.com>
To: Andreas Rottmann <a.rottmann@gmx.at>
Cc: Guile Development <guile-devel@gnu.org>
Subject: Re: R6RS exception printing at the REPL
Date: Sat, 20 Nov 2010 16:23:44 +0100 [thread overview]
Message-ID: <m3hbfc10jj.fsf@unquote.localdomain> (raw)
In-Reply-To: <87sjzvnu1i.fsf@delenn.lan> (Andreas Rottmann's message of "Sun, 24 Oct 2010 23:46:17 +0200")
On Sun 24 Oct 2010 23:46, Andreas Rottmann <a.rottmann@gmx.at> writes:
> Attached is a patch that improves the way R6RS exceptions are printed at
> the REPL
Cool! I have also found the need to define pretty-printers for various
throw keys. I wonder, could you rework this patch to add a more generic
exception-printing mechanism?
I'm going to display my ignorance in public and try to write down some
types. := is a type definition, and : declares the type of something.
exception-printer := port args -> nothing
set-exception-printer! : exception-printer -> nothing
exception-printer : key -> exception-printer
print-exception : key args port -> nothing
The default behavior could be hard-coded into print-exception. The first
two procedures (set-exception-printer!, exception-printer, and
print-exception) could go into boot-9, and the third into (system repl
error-handling), or a new module under ice-9.
What do you think?
Regards,
Andy
--
http://wingolog.org/
next prev parent reply other threads:[~2010-11-20 15:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-24 21:46 R6RS exception printing at the REPL Andreas Rottmann
2010-11-20 15:23 ` Andy Wingo [this message]
2010-11-20 18:18 ` Andreas Rottmann
2010-11-20 20:19 ` Andy Wingo
2010-11-27 0:08 ` Andreas Rottmann
2010-11-29 20:15 ` @ and @@ in r6rs libs [Was: R6RS exception printing at the REPL] Andy Wingo
2010-11-29 22:35 ` Andreas Rottmann
2010-11-29 20:34 ` R6RS exception printing at the REPL Andy Wingo
2010-11-29 23:20 ` Andreas Rottmann
2010-12-01 23:16 ` Ludovic Courtès
2010-12-01 23:13 ` Ludovic Courtès
2010-12-02 20:21 ` Andreas Rottmann
2010-12-13 16:49 ` Ludovic Courtès
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