transcendental-lisp/lisp/object/this.lisp

44 lines
831 B
Common Lisp

(load "../lang/dlambda.lisp")
(defun counter (initial-count)
(let ((count initial-count)
(name nil)
(this nil))
(setf name "Counter")
(setf this
(eval
(dlambda
(:inc ()
(setf count (+ count 1)))
(:inc-3 ()
(funcall this :inc)
(funcall this :inc)
(funcall this :inc))
(:dec ()
(setf count (- count 1)))
(:dec-3 ()
(funcall this :dec)
(funcall this :dec)
(funcall this :dec))
(:get ()
count)
(:set (value)
(setf count value))
(t ()
(cons name count)))))))
(let ((instance (counter 0)))
(defun my-counter (&rest args) (apply instance args)))
(setf my-counter2 (counter 10000))