Added computed-slot-valid-p
Wed Sep 17 05:52:12 PDT 2008 levente.meszaros@gmail.com
* Added computed-slot-valid-p
Warning: CRC errors found. These are probably harmless but should be repaired.
See 'darcs gzcrcs --help' for more information.
diff -rN -u old-computed-class/api.lisp new-computed-class/api.lisp
--- old-computed-class/api.lisp 2014-08-01 04:52:52.000000000 -0700
+++ new-computed-class/api.lisp 2014-08-01 04:52:52.000000000 -0700
@@ -91,6 +91,16 @@
(when (slot-boundp-using-class (class-of object) object slot)
(error "The slot ~A of ~A is not computed while invalidate-computed-slot was called on it" slot object))))))
+(defgeneric computed-slot-valid-p (object slot)
+ (:documentation "Checks if the given slot value is invalid or not.")
+ (:method ((object computed-object) (slot-name symbol))
+ (invalidate-computed-slot object (find-slot (class-of object) slot-name)))
+ (:method ((object computed-object) (slot computed-effective-slot-definition))
+ (let ((computed-state (computed-state-or-nil object slot)))
+ (if computed-state
+ (computed-state-valid-p computed-state)
+ #t))))
+
(defgeneric make-slot-uncomputed (object slot)
(:documentation "Makes the slot a constant slot with respect to other computed slots. The current value will not be racalculated even if it's invalid.")
(:method ((object computed-object) (slot-name symbol))