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(import java.lang.System)
## (require "./another" as another)

(definterface Function
  (: apply (-> [java.lang.Object] java.lang.Object)))

(defclass Tuple0 [])
(defclass Tuple1 [[java.lang.Object _0]])
(defclass Tuple2 [[java.lang.Object _0] [java.lang.Object _1]])

(defclass Variant [[java.lang.String tag] [java.lang.Object value]])

#( (def (++ xs ys)
     (case xs
       #Nil
       ys

       (#Cons x xs*)
       (#Cons x (++ xs* ys)))) )#

(def (main args)
  (if true
    (let variant (#Pair "Pattern" "Matching")
         (case variant
           (#Pair first second)
           (do (:: (:: System out) (println first))
             (:: (:: System out) (println second)))))
    (:: (:: System out) (println "FALSE"))))

#( (def (template elems)
     (case elems
       #Nil
       elems

       (#Cons head tail)
       (case head
         (#Cons (#Symbol "~") (#Cons unquoted #Nil))
         (#Cons unquoted (template tail))

         (#Cons (#Symbol "~@") (#Cons spliced #Nil))
         (#Cons (#Symbol "++") (#Cons spliced (template tail)))

         _
         (#Cons head (template tail)))
       ))

   (defmacro (' form)
     (case form
       (#Cons form* #Nil)
       (case form*
         (#Form elems)
         (#Quote (#Form (template elems)))
         
         _
         (#Quote form*))
       ))

   (defmacro (::+ pieces)
     (case pieces
       (#Cons init #Nil)
       init

       (#Cons init (#Cons access others))
       (' (::+ (:: (~ init) (~ access)) (~@ others)))
       ))

   (def (main args)
     (if true
       (let f (lambda [x] (lambda [y] (x y)))
            (let g (lambda [x] const)
                 (::+ System out (println (f g "WE'VE GOT CLOSURES!")))
                 ## (:: (:: System out) (println (f g "WE'VE GOT CLOSURES!")))))
       (:: (:: System out) (println "FALSE"))))
   )#