(defun description-print-name (description)
(description-class-name (class-of description)))
-(defun find-attribute (description attribute-name)
- (when (slot-exists-p description attribute-name)
- (slot-value description attribute-name)))
-
-
(defun description-attributes (description)
- (mapcar (curry
- #'slot-value-using-class
- (class-of 'description)
- description)
- (class-slots (class-of description))))
+ (description-class-attributes (class-of description)))
+
+(defun find-attribute (description attribute-name)
+ (find attribute-name (description-attributes description)
+ :key #'attribute-name))
+(define-layered-function description-active-descriptions (description)
+ (:method ((description standard-description-object))
+ (attribute-value (find-attribute description 'active-descriptions)))
+ (:method ((description attribute))
+ (attribute-active-descriptions description)))
+(define-layered-function description-inactive-descriptions (description)
+ (:method ((description standard-description-object))
+ (attribute-value (find-attribute description 'inactive-descriptions)))
+ (:method ((description attribute))
+ (attribute-inactive-descriptions description)))
(define-layered-function attributes (description)
(:method (description)
(let* ((active-attributes
(find-attribute description 'active-attributes))
(attributes (when active-attributes
- (attribute-value *object* active-attributes))))
+ (attribute-value active-attributes))))
(if attributes
(mapcar (lambda (spec)
(find-attribute