;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Apr 2000
;;;;
-;;;; $Id: rules.lisp,v 1.27 2003/04/23 20:11:22 kevin Exp $
+;;;; $Id: rules.lisp,v 1.31 2003/04/24 20:30:11 kevin Exp $
;;;;
;;;; This file is Copyright (c) 2000-2002 by Kevin M. Rosenberg
;;;;
(funcall (func rule) obj)))))
+#+ignore
(defmethod (setf slot-value-using-class) :around
(new-value (cl hyperobject-class) obj (slot hyperobject-esd))
;; this does not work on gerd-pcl in cmu 18e+
(esd-value-constraint slot)
(call-next-method))
-#+ignore
-(defmethod (setf slot-value-using-class) :around
- (new-value (cl hyperobject-class) obj (slot hyperobject-esd))
+;; required for cmucl18e+ work-around
+(defun do-svuc (new-value cl obj slot)
#+ignore
(cmsg-c :verbose "Setf slot value: class: ~s, obj: ~s, slot: ~s, value: ~s" cl (class-of obj) slot new-value)
(let ((func (esd-value-constraint slot)))
- (call-next-method)
(cond
((and func (not (funcall func new-value)))
(warn "Rejected change to value of slot ~a of object ~a"
(slot-definition-name slot) obj)
- (slot-value obj (slot-definition-name slot)))
+ (values (slot-value obj (slot-definition-name slot)) nil)
(t
- (prog1
- (call-next-method)
- (when (direct-rules cl)
- (fire-class-rules cl obj slot)))))))
+ (values new-value t))))))
+(defmethod (setf slot-value-using-class) :around
+ (new-value (cl hyperobject-class) obj (slot hyperobject-esd))
+ (multiple-value-bind (value changed-p) (do-svuc new-value cl obj slot)
+ (when changed-p
+ (setq value (call-next-method))
+ (when (direct-rules cl)
+ (fire-class-rules cl obj slot)))
+ value))
+
+
#+ignore
(defmethod (setf slot-value-using-class) :around