(define-layered-class description-access-class (standard-layer-class contextl::special-layered-access-class )
((defined-in-descriptions :initarg :in-description)
+ (class-active-attributes-definition :initarg :attributes)
(mixin-class-p :initarg :mixinp)))
(defmethod direct-slot-definition-class
NIL)
(:method ((description standard-description-object))
T))
-
-(defun initialize-description-class (class)
-
-;;; HACK: initialization does not happ en properly
-;;; when compiling and loading or something like that.
-;;; Obviously i'm not sure why.
-;;; So we're going to explicitly initialize things.
-;;; For now. --drewc
-
- (pushnew class *defined-descriptions*)
-;;; ENDHACK.
-
- (let* ((description (find-layer class))
- (attribute-objects
- (setf (description-class-attributes (class-of description))
- (mapcar
- (lambda (slot)
- (or (find-attribute description
- (slot-definition-name slot))
- (let* ((*init-time-description* description)
- (attribute-class (or
- (ignore-errors
- (slot-value-using-class
- (class-of description) description slot))
- 'standard-attribute))
- (attribute
- (apply #'make-instance
- attribute-class
- :description description
- :attribute-class attribute-class
- (attribute-object-initargs slot))))
- (setf (slot-definition-attribute-object slot) attribute))))
- (remove 'described-object (class-slots (class-of description))
- :key #'slot-definition-name))))
- (defining-classes
- (partial-class-defining-classes class)))
+(defun compute-effective-attribute-objects (description)
+ (mapcar
+ (lambda (slot)
+ (or (find-attribute description
+ (slot-definition-name slot) nil)
+ (let* ((*init-time-description* description)
+ (attribute-class (or
+ (ignore-errors
+ (slot-value-using-class
+ (class-of description) description slot))
+ 'standard-attribute))
+ (attribute
+ (apply #'make-instance
+ attribute-class
+ :description description
+ :attribute-class attribute-class
+ (attribute-object-initargs slot))))
+ (setf (slot-definition-attribute-object slot) attribute))))
+ (remove 'described-object (class-slots (class-of description))
+ :key #'slot-definition-name)))
+
+(defmacro with-described-object ((object description &rest args)
+ &body body)
+ `(funcall-with-described-object
+ (lambda () ,@body)
+ ,object
+ ,description
+ ,@args))
+
+(defun initialize-effective-attribute-values-for-description-class (class description attribute-objects)
(loop
:for (layer class)
- :on defining-classes :by #'cddr
+ :on (partial-class-defining-classes class) :by #'cddr
:do (funcall-with-layer-context
(adjoin-layer (find-layer layer) (current-layer-context))
(lambda ()
initargs )
(setf (slot-value description (attribute-name attribute))
(attribute-class attribute))
- (apply #'change-class attribute (attribute-class attribute)
- initargs)))))))))
-
-
-#+old(defun initialize-description-class (class)
+ (apply #'change-class attribute (find-class (attribute-class attribute))
+ initargs))))
+ (when (slot-boundp class 'class-active-attributes-definition)
+ (with-described-object (nil description)
+ (setf (slot-value (find-attribute description 'active-attributes) 'value)
+ (slot-value class 'class-active-attributes-definition))))))))
+
+(defun initialize-description-class (class)
;;; HACK: initialization does not happ en properly
;;; when compiling and loading or something like that.
(pushnew class *defined-descriptions*)
;;; ENDHACK.
-
+
(let* ((description (find-layer class))
(attribute-objects
- (mapcar
- (lambda (slot)
- (let* ((*init-time-description* description)
- (attribute
- (apply #'make-instance
- 'standard-attribute
- :description description
- (attribute-object-initargs slot))))
-
-
- (setf (slot-definition-attribute-object slot) attribute)))
- (remove 'described-object (class-slots (class-of description))
- :key #'slot-definition-name)))
- (defining-classes (partial-class-defining-classes (class-of description))))
+ (setf (description-class-attributes (class-of description))
+ (compute-effective-attribute-objects description))))
+
+ (initialize-effective-attribute-values-for-description-class class description attribute-objects)
+))
+
- (loop
- :for (layer class)
- :on defining-classes :by #'cddr
- :do (funcall-with-layer-context
- (adjoin-layer (find-layer layer) (current-layer-context))
- (lambda ()
- (loop :for direct-slot :in (class-direct-slots class)
- :do (let ((attribute
- (find (slot-definition-name direct-slot)
- attribute-objects
- :key #'attribute-name)))
- (let ((initargs
- (prepare-initargs attribute (direct-attribute-properties direct-slot))))
-
- (apply #'reinitialize-instance attribute
- initargs )
- (warn "Attribute class for ~A is ~A" attribute (attribute-class attribute))
- (when (not (eq (find-class (attribute-class attribute))
- (class-of attribute)))
- (warn "~%CHANGING CLASS~%")
-
- (apply #'change-class attribute (attribute-class attribute)
- initargs))))))))))
;;;; HACK: run this at startup till we figure things out.
(defun initialize-descriptions ()
(print-unreadable-object (object stream :type t :identity t)
(princ (ignore-errors (description-print-name (find-layer object))) stream)))
-(defun find-description (name)
- (find-layer (find-class (defining-description name))))
+(defun find-description (name &optional (errorp t))
+ (let ((class (find-class (defining-description name) errorp)))
+ (when class (find-layer class))))
HCoop / clinton / lisp-on-lines.git / blobdiff