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Re: Custom printers for SRFI-9 records
From: |
Ludovic Courtès |
Subject: |
Re: Custom printers for SRFI-9 records |
Date: |
Thu, 27 May 2010 00:34:15 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) |
Hi,
No Itisnt <address@hidden> writes:
> On Tue, May 25, 2010 at 3:56 PM, No Itisnt <address@hidden> wrote:
>> I agree. Here's a patch that adds (srfi srfi-9 gnu) with
>> set-record-printer! and adds a subsection to the SRFI-9 part of the
>> manual for it.
>> I can go ahead and commit it, if that's OK.
This looks good to me.
> diff --git a/doc/ref/srfi-modules.texi b/doc/ref/srfi-modules.texi
> index 0d192fa..b3f9946 100644
> --- a/doc/ref/srfi-modules.texi
> +++ b/doc/ref/srfi-modules.texi
> @@ -1922,6 +1922,35 @@ The functions created by @code{define-record-type} are
> ordinary
> top-level @code{define}s. They can be redefined or @code{set!} as
> desired, exported from a module, etc.
>
> address@hidden
> +* SRFI-9 Custom printers:: Customizing print behavior.
> address@hidden menu
> +
> address@hidden SRFI-9 Custom printers
> address@hidden Custom printers
Use @unnumberedsubsubsec instead and no menu. Capitalize like this:
“SRFI-9 Custom Printers”.
> +You may use @code{set-record-printer!} to customize the default printing
> +behavior of records. This is a GUILE extension and is not part of SRFI-9. It
> is
s/GUILE/Guile/ and two spaces after and end-of-sentence period.
> +located in the @nicode{(srfi srfi-9 gnu)} module.
> +
> address@hidden {library syntax} set-record-printer! name thunk
Rather use @deffn{Scheme Syntax}, which seems to be the most commonly
used form in the manual.
> +This example prints the employee's name in brackets, for instance
> address@hidden''.
No need for ``quotes'' here.
> +(define (set-record-printer! type thunk)
> + (struct-set! type vtable-index-printer thunk))
I’d rather call it ‘set-record-type-printer!’ (it prints records, but
it’s the printer of the record type). What do you think?
You could add a docstring here.
And don’t forget to add srfi-9/gnu.scm to ‘SRFI_SOURCES’ in
modules/Makefile.am.
Thanks,
Ludo’.