(setf context (remove-layer (find-description d)
context)))
(dolist (d activate context)
- (setf context (adjoin-layer (find-description d)
+ (setf context (adjoin-layer (find-description (if (consp d) (car d) d))
context))))
-
-
-
+(defun funcall-with-attribute-context (attribute thunk)
+ (funcall-with-layer-context
+ (modify-layer-context (current-layer-context)
+ :activate (attribute-active-descriptions attribute)
+ :deactivate (attribute-inactive-descriptions attribute))
+ (lambda ()
+ (with-special-symbol-access
+ (contextl::funcall-with-special-initargs
+ (mappend (lambda (desc)
+ (when (consp desc)
+ (let ((description (find-description (car desc))))
+ (loop
+ :for (key val) :on (cdr desc) :by #'cddr
+ :collect (list (find key (description-attributes description)
+ :key #'attribute-keyword)
+ :value val)))))
+ (attribute-active-descriptions attribute))
+ (lambda ()
+ (without-special-symbol-access
+ (funcall thunk))))))))
+
+(defmacro with-attribute-context ((attribute) &body body)
+ `(funcall-with-attribute-context ,attribute (lambda () ,@body)))
+
+
(defun display (display object &rest args &key deactivate activate &allow-other-keys)
-
(funcall-with-layer-context
(modify-layer-context (current-layer-context)
:activate activate
(apply #'display-using-description (description-of object) display object args))))
(define-layered-method display-using-description
- :around (description display object &rest args)
+ :around ((description standard-description-object) display object &rest args)
(declare (ignorable args))
#+nil (break "Entering DISPLAY for ~A on ~A using ~A" object display description)
(let ((*display* display))
-
(defun display/d (&rest args)
(apply #'display-using-description args))
(list (first description-spec)
(if (eq 'description (second description-spec))
'description
- (defining-description (second description-spec)))))
+ (contextl::defining-layer (defining-description (second description-spec))))))
,display-spec
,object-spec &rest args)
(declare (ignorable args))