X-Git-Url: https://git.hcoop.net/clinton/lisp-on-lines.git/blobdiff_plain/4358148e6c67fcc2ae24050c54d8050b4dc03f9d..e8fd1a9a2f3b68a8aee14b8776ff8398ba717eef:/src/standard-descriptions/list.lisp

diff --git a/src/standard-descriptions/list.lisp b/src/standard-descriptions/list.lisp
index 71c65f2..133ee69 100644
--- a/src/standard-descriptions/list.lisp
+++ b/src/standard-descriptions/list.lisp
@@ -1,8 +1,23 @@
 (in-package :lisp-on-lines)
 
-(define-description cons ()
+
+(define-layered-class list-attribute (standard-attribute)
+ ((item-args :initform nil :initarg :item :layered t :special t)))
+
+(define-layered-method display-attribute-value 
+  ((attribute list-attribute))
+  (arnesi:dolist* (item (attribute-value attribute))
+    (apply #'display *display* item (slot-value attribute 'item-args))))
+
+(define-description list ()
+ ((list :attribute-class list-attribute
+	 :function #'identity
+	 :attributes nil)))
+
+(define-description cons (list)
   ((car :label "First" :function #'car)
-   (cdr :label "Rest"  :function #'cdr)))
+   (cdr :label "Rest"  :function #'cdr)
+   ))
 
 (define-description cons ()
   ((editp :value t :editp nil)
@@ -10,6 +25,10 @@
    (cdr :setter #'rplacd))
   (:in-description editable))
 
+(define-description cons ()
+  ((active-attributes :value '(list)))
+  (:in-description inline))
+
 (define-layered-method description-of ((c cons))
  (find-description 'cons))