mirror of
https://git.savannah.gnu.org/git/guile.git
synced 2025-05-03 13:20:26 +02:00
71d540f734
* goops/old-define-method.scm: New file. * goops.scm, goops/save.scm, goops/composite-slot.scm, goops/active-slot.scm: Use new method syntax.
68 lines
2.4 KiB
Scheme
68 lines
2.4 KiB
Scheme
;;; installed-scm-file
|
||
|
||
;;;; Copyright (C) 1999, 2001 Free Software Foundation, Inc.
|
||
;;;;
|
||
;;;; This program is free software; you can redistribute it and/or modify
|
||
;;;; it under the terms of the GNU General Public License as published by
|
||
;;;; the Free Software Foundation; either version 2, or (at your option)
|
||
;;;; any later version.
|
||
;;;;
|
||
;;;; This program is distributed in the hope that it will be useful,
|
||
;;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
;;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
;;;; GNU General Public License for more details.
|
||
;;;;
|
||
;;;; You should have received a copy of the GNU General Public License
|
||
;;;; along with this software; see the file COPYING. If not, write to
|
||
;;;; the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
||
;;;; Boston, MA 02111-1307 USA
|
||
;;;;
|
||
|
||
|
||
;;;; This software is a derivative work of other copyrighted softwares; the
|
||
;;;; copyright notices of these softwares are placed in the file COPYRIGHTS
|
||
;;;;
|
||
;;;; This file is based upon active-slot.stklos from the STk
|
||
;;;; distribution by Erick Gallesio <eg@unice.fr>.
|
||
;;;;
|
||
|
||
(define-module (oop goops active-slot)
|
||
:use-module (oop goops internal))
|
||
|
||
(export <active-class>)
|
||
|
||
(define-class <active-class> (<class>))
|
||
|
||
(define-method (compute-get-n-set (class <active-class>) slot)
|
||
(if (eq? (slot-definition-allocation slot) #:active)
|
||
(let* ((index (slot-ref class 'nfields))
|
||
(name (car slot))
|
||
(s (cdr slot))
|
||
(env (class-environment class))
|
||
(before-ref (get-keyword #:before-slot-ref s #f))
|
||
(after-ref (get-keyword #:after-slot-ref s #f))
|
||
(before-set! (get-keyword #:before-slot-set! s #f))
|
||
(after-set! (get-keyword #:after-slot-set! s #f))
|
||
(unbound (make-unbound)))
|
||
(slot-set! class 'nfields (+ index 1))
|
||
(list (lambda (o)
|
||
(if before-ref
|
||
(if (before-ref o)
|
||
(let ((res (%fast-slot-ref o index)))
|
||
(and after-ref (not (eqv? res unbound)) (after-ref o))
|
||
res)
|
||
(make-unbound))
|
||
(let ((res (%fast-slot-ref o index)))
|
||
(and after-ref (not (eqv? res unbound)) (after-ref o))
|
||
res)))
|
||
|
||
(lambda (o v)
|
||
(if before-set!
|
||
(if (before-set! o v)
|
||
(begin
|
||
(%fast-slot-set! o index v)
|
||
(and after-set! (after-set! o v))))
|
||
(begin
|
||
(%fast-slot-set! o index v)
|
||
(and after-set! (after-set! o v)))))))
|
||
(next-method)))
|