-;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10 -*-
+;;;; -*- Mode: Lisp; Syntax: ANSI-Common-Lisp; Base: 10; Package: kmrcl-*-
;;;; *************************************************************************
;;;; FILE IDENTIFICATION
;;;;
;;;; Programmer: Kevin M. Rosenberg
;;;; Date Started: Apr 2000
;;;;
-;;;; $Id: attrib-class.lisp,v 1.2 2002/10/06 13:30:17 kevin Exp $
+;;;; $Id$
;;;;
-;;;; This file, part of Kmrcl, is Copyright (c) 2002 by Kevin M. Rosenberg
+;;;; This file, part of KMRCL, is Copyright (c) 2002-2003 by Kevin M. Rosenberg
;;;;
-;;;; Kmrcl users are granted the rights to distribute and use this software
-;;;; as governed by the terms of the GNU General Public License.
+;;;; KMRCL users are granted the rights to distribute and use this software
+;;;; as governed by the terms of the Lisp Lesser GNU Public License
+;;;; (http://opensource.franz.com/preamble.html), also known as the LLGPL.
;;;; *************************************************************************
+;; Disable attrib class until understand changes in sbcl/cmucl
+;; using COMPUTE-SLOT-ACCESSOR-INFO and defining method
+;; for slot access of ALL-ATTRIBUTES. Does this work on Allegro/LW?
+
;;;; 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)
-
-(defclass attributes-dsd (mop::standard-direct-slot-definition)
- ((attributes :initarg :attributes :initform nil
- :accessor attributes)))
+(in-package #:kmrcl)
-(defclass attributes-esd (mop::standard-effective-slot-definition)
- ((attributes :initarg :attributes :initform nil
- :accessor slot-definition-attributes)))
+(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
+ :accessor dsd-attributes)))
-(defclass attributes-class (mop::standard-class)
- ()
- )
+(defclass attributes-esd (kmr-mop:standard-effective-slot-definition)
+ ((attributes :initarg :attributes :initform nil
+ :accessor esd-attributes)))
-(defmethod mop::direct-slot-definition-class ((cl attributes-class)
- &rest iargs &key attributes)
- (declare (ignorable attributes))
-;; (format t "attributes:~s iargs:~s~%" attributes iargs)
- (find-class 'attributes-dsd))
+;; encapsulating macro for Lispworks
+(kmr-mop:process-slot-option attributes-class :attributes)
+#+(or cmu scl sbcl openmcl)
+(defmethod kmr-mop:validate-superclass ((class attributes-class)
+ (superclass kmr-mop:standard-class))
+ t)
-(defmethod mop::compute-effective-slot-definition :around
- ((cl attributes-class) slot dsds)
- (declare (ignorable slot))
- (apply
- #'make-instance 'attributes-esd
- :attributes (remove-duplicates (gu:mapappend #'attributes dsds))
- (excl::compute-effective-slot-definition-initargs cl dsds))
- )
+(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:effective-slot-definition-class ((cl attributes-class) #+kmr-normal-dsdc &rest initargs)
+ (declare (ignore initargs))
+ (kmr-mop:find-class 'attributes-esd))
-#+ignore
-(defmethod mop::compute-effective-slot-definition ((cl attributes-class) slot dsds)
- (declare (ignorable slot))
- (let ((normal-slot (call-next-method)))
- (setf (slot-definition-attributes normal-slot)
- (remove-duplicates
- (mapappend #'slot-definition-attributes dsds)))
- normal-slot))
+(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))
+;; This does not work in Lispworks prior to version 4.3
-(defmethod mop::compute-slots ((class attributes-class))
+(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))
- (slot-definition-attributes slot))))
- (when attr-list
- (cons (mop::slot-definition-name slot) attr-list))))
- normal-slots)))
- (setq alist (delete nil alist))
- (cons (mop::make-instance 'mop::standard-effective-slot-definition
- :name 'all-attributes
- :initform `',alist
- :initfunction #'(lambda () alist))
- normal-slots)))
-
+ (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
+ :documentation "Attribute bucket"
+ :type t
+ )
+ normal-slots)))
+
(defun slot-attribute (instance slot-name attribute)
(cdr (slot-attribute-bucket instance slot-name attribute)))
(defun slot-attribute-bucket (instance slot-name attribute)
(let* ((all-buckets (slot-value instance 'all-attributes))
- (slot-bucket (assoc slot-name all-buckets)))
+ (slot-bucket (assoc slot-name all-buckets)))
(unless slot-bucket
(error "The slot named ~S of ~S has no attributes."
- slot-name instance))
+ slot-name instance))
(let ((attr-bucket (assoc attribute (cdr slot-bucket))))
(unless attr-bucket
- (error "The slot named ~S of ~S has no attributes named ~S."
- slot-name instance attribute))
+ (error "The slot named ~S of ~S has no attributes named ~S."
+ slot-name instance attribute))
attr-bucket)))
-#||
-(in-package :kmrcl)
-
-(defclass credit-rating ()
- ((level :attributes (date-set time-set))
- (id :attributes (person-setting)))
- (:metaclass kmrcl:attributes-class))
-(defparameter cr (make-instance 'credit-rating))
-
-(format t "~&date-set: ~a" (gu:slot-attribute cr 'level 'date-set))
-(setf (gu:slot-attribute cr 'level 'date-set) "12/15/1990")
-(format t "~&date-set: ~a" (gu:slot-attribute cr 'level 'date-set))
-
-(defclass monitored-credit-rating (credit-rating)
- ((level :attributes (last-checked interval date-set))
- (cc :initarg :cc)
- (id :attributes (verified))
- )
- (:metaclass gu:attributes-class))
-(defparameter mcr (make-instance 'monitored-credit-rating))
-
-(setf (gu:slot-attribute mcr 'level 'date-set) "01/05/2002")
-(format t "~&date-set for mcr: ~a" (gu:slot-attribute mcr 'level 'date-set))
-||#
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