;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Apr 2000
;;;;
-;;;; $Id: attrib-class.lisp,v 1.8 2003/04/29 01:39:40 kevin Exp $
+;;;; $Id: attrib-class.lisp,v 1.16 2003/07/01 22:16:40 kevin Exp $
;;;;
;;;; This file, part of KMRCL, is Copyright (c) 2002 by Kevin M. Rosenberg
;;;;
;;;; Defines a metaclass that allows the use of attributes (or subslots)
;;;; on slots. Based on example in AMOP, but modified to use ACL's MOP.
-(in-package :kmrcl)
+(in-package #:kmrcl)
+
+(defclass attributes-class (kmr-mop:standard-class)
+ ()
+ (:documentation "metaclass that implements attributes on slots. Based
+on example from AMOP"))
(defclass attributes-dsd (kmr-mop:standard-direct-slot-definition)
((attributes :initarg :attributes :initform nil
((attributes :initarg :attributes :initform nil
:accessor esd-attributes)))
+;; encapsulating macro for Lispworks
+(kmr-mop:process-slot-option attributes-class :attributes)
-(defclass attributes-class (kmr-mop:standard-class)
- ()
- (:documentation "metaclass that implements attributes on slots. Based
-on example from AMOP"))
-
-
-#+(or cmu scl sbcl)
+#+(or cmu scl sbcl openmcl)
(defmethod kmr-mop:validate-superclass ((class attributes-class)
(superclass kmr-mop:standard-class))
t)
-(defmethod kmr-mop:direct-slot-definition-class ((cl attributes-class)
- #+(or sbcl cmu scl lispworks)
- initargs
- #+(or allegro) &rest #+(or allegro) iargs)
- ;; (format t "attributes:~s iargs:~s~%" attributes iargs)
+(defmethod kmr-mop:direct-slot-definition-class ((cl attributes-class) #+kmr-normal-dsdc &rest initargs)
+ (declare (ignore initargs))
(kmr-mop:find-class 'attributes-dsd))
-(defmethod kmr-mop:compute-effective-slot-definition :around
- ((cl attributes-class) #+kmr-named-cesd name dsds)
- #+kmr-named-cesd (declare (ignore name))
- (apply
- #'make-instance 'attributes-esd
- :attributes (remove-duplicates (mapappend #'dsd-attributes dsds))
- (kmr-mop:compute-effective-slot-definition-initargs cl dsds))
- )
-
-#+ignore
-(defmethod kmr-mop:compute-effective-slot-definition :around
- ((cl attributes-class) #+kmr-named-cesd name dsds)
- #+kmr-named-cesd (declare (ignore name))
- (let ((normal-slot (call-next-method)))
- (setf (esd-attributes normal-slot)
- (remove-duplicates
- (mapappend #'esd-attributes dsds)))
- normal-slot))
+(defmethod kmr-mop:effective-slot-definition-class ((cl attributes-class) #+kmr-normal-dsdc &rest initargs)
+ (declare (ignore initargs))
+ (kmr-mop:find-class 'attributes-esd))
+(defmethod kmr-mop:compute-effective-slot-definition
+ ((cl attributes-class) #+kmr-normal-cesd name dsds)
+ #+kmr-normal-cesd (declare (ignore name))
+ (let ((esd (call-next-method)))
+ (setf (esd-attributes esd) (remove-duplicates (mapappend #'dsd-attributes dsds)))
+ esd))
(defmethod kmr-mop:compute-slots ((class attributes-class))
(let* ((normal-slots (call-next-method))
- (alist
- (mapcar
- #'(lambda (slot)
- (let ((attr-list (mapcar #'(lambda (attr) (cons attr nil))
- (esd-attributes slot))))
- (when attr-list
- (cons (kmr-mop:slot-definition-name slot) attr-list))))
- normal-slots)))
- (setq alist (delete nil alist))
- (cons (make-instance 'kmr-mop:standard-effective-slot-definition
- :name 'all-attributes
- :initform `',alist
- :initfunction #'(lambda () alist))
+ (alist (mapcar
+ #'(lambda (slot)
+ (cons (kmr-mop:slot-definition-name slot)
+ (mapcar #'(lambda (attr) (list attr))
+ (esd-attributes slot))))
+ normal-slots)))
+ (cons (make-instance 'attributes-esd
+ :name 'all-attributes
+ :initform `',alist
+ :initfunction #'(lambda () alist)
+ :allocation :instance
+ :class class
+ :documentation ""
+ :type t
+ ;; This is an attempted work-around -- lispworks doesn't work
+ ;; it appears to setup storage someplace
+ ;; #+lispworks :location #+lispworks (length normal-slots)
+ )
normal-slots)))
(defun slot-attribute (instance slot-name attribute)
slot-name instance attribute))
attr-bucket)))
-(eval-when (:compile-toplevel :load-toplevel :execute)
- (export '(attributes-class slot-attributes)))
+