From: Mikael Djurfeldt <mikael@djurfeldt.com>
To: Damien Mattei <damien.mattei@gmail.com>
Cc: guile-user <guile-user@gnu.org>
Subject: Re: GOOPS question
Date: Fri, 30 Apr 2021 09:55:18 +0200 [thread overview]
Message-ID: <CAA2XvwK5T9eb7TTgVaZY0jWcsuxYCUpk7TM=xu2Wkmw+Bmi6EA@mail.gmail.com> (raw)
In-Reply-To: <CADEOadc09aequx31A7yQc8cYFta-WTH_Bp-qjWv3posOv5jcWw@mail.gmail.com>
[-- Attachment #1: Type: text/plain, Size: 1003 bytes --]
Hi!
I attach a template which you could build on. Please post your class when
you're done. :)
Best regards,
Mikael
On Fri, Apr 30, 2021 at 1:11 AM Damien Mattei <damien.mattei@gmail.com>
wrote:
> hi,
> i want to create a growable vector class in Guile,
> such as std::vector or python list,
> first i do not know if it exist already? seems not
>
> i want to use GOOPS but i do not understand how the superclass could be
> accessed,used, instanciate...
> for example in the doc there is:
> (define-class <my-complex> (<number>) r i #:name "Complex")
>
> seems <number> superclass is of no use
>
> for my growable vector i would like to use array as superclass?
> but perhaps should it be just a slot as array are a subset of growable
> array ,so a subclass
>
> anyway if i write something ike that:
> (define-class <gvector> (<array>) .....
> how can i use the <array> object?
>
> i think perhaps i should not define a superclass or <object> as super
> class....
> any advice welcome...
>
> Damien
>
[-- Attachment #2: gvector.scm --]
[-- Type: text/x-scheme, Size: 1171 bytes --]
(define-module (oop gvector)
#:use-module (oop goops)
#:use-module ((guile)
#:select (vector-length vector-ref vector-set!)
#:prefix orig:)
#:export (<gvector>)
#:replace (vector-length vector-ref vector-set!))
;;; Constants
(define *initial-allocated-size* 8)
;;; Capture original bindings of vector getters and setters
(define-generic vector-length)
(define-method (vector-length (v <vector>))
(orig:vector-length v))
(define-generic vector-set!)
(define-method (vector-set! (gv <vector>) (i <integer>) obj)
(orig:vector-set! gv i obj))
(define-generic vector-ref)
(define-method (vector-ref (gv <vector>) (i <integer>))
(orig:vector-ref gv i))
;;; The <gvector> class
(define-class <gvector> (<vector>)
(v #:init-value (make-vector *initial-allocated-size*) #:getter v)
(length #:init-value 0 #:getter vector-length))
(define (assert-size! gv i)
(if (>= i (length gv))
*unspecified*)) ; do nothing for now
(define-method (vector-set! (gv <gvector>) (i <integer>) obj)
(assert-size! gv i)
(vector-set! (v gv) i obj))
(define-method (vector-ref (gv <gvector>) (i <integer>))
(assert-size! gv i)
(vector-ref (v gv) i))
next prev parent reply other threads:[~2021-04-30 7:55 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-29 23:10 GOOPS question Damien Mattei
2021-04-30 5:52 ` Atom X
2021-04-30 7:55 ` Mikael Djurfeldt [this message]
2021-05-02 0:07 ` Damien Mattei
2021-05-02 10:14 ` Damien Mattei
2021-05-02 10:26 ` Mikael Djurfeldt
2021-05-02 10:58 ` Damien Mattei
2021-05-02 10:34 ` Damien Mattei
2021-05-02 10:35 ` tomas
2021-05-02 10:21 ` Mikael Djurfeldt
2021-05-08 21:11 ` Damien Mattei
2021-05-10 12:22 ` Mikael Djurfeldt
2021-04-30 7:57 ` Linus Björnstam
2021-04-30 9:47 ` Damien Mattei
2021-04-30 10:43 ` Mikael Djurfeldt
2021-04-30 11:08 ` Mikael Djurfeldt
2021-04-30 12:19 ` Stefan Israelsson Tampe
2021-04-30 14:50 ` Mikael Djurfeldt
2021-04-30 15:15 ` Mikael Djurfeldt
[not found] <Pine.GSO.4.05.10207071043010.9685-100000@sallust.ida.ing.tu-bs.de>
2002-07-08 18:26 ` goops question Marius Vollmer
[not found] ` <87fzyu9iu0.fsf@zagadka.ping.de>
2002-07-08 19:59 ` Dirk Herrmann
2002-07-09 21:17 ` Neil Jerram
-- strict thread matches above, loose matches on Subject: below --
2002-07-07 8:45 Dirk Herrmann
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