darkfi/lisp/examples/jubjub-add-macro.lisp

(println "jubjub-add-macro.lisp")
(load-file "util.lisp")

(defmacro! jubjub-add (fn* [param1 param2 param3 param4]
    (let* [u1 (gensym) v1 (gensym) u2 (gensym) v2 (gensym)
           EDWARDS_D (gensym) U (gensym) A (gensym) B (gensym)
           C (gensym) u3 (gensym) v3 (gensym)] (
        `(def! ~u1 (alloc ~u1 param1))
        `(def! ~v1 (alloc ~v1 param2))
        `(def! ~u2 (alloc ~u2 param3))
        `(def! ~v2 (alloc ~v2 param4)) 
        `(def! ~EDWARDS_D (alloc-const ~EDWARDS_D (scalar "2a9318e74bfa2b48f5fd9207e6bd7fd4292d7f6d37579d2601065fd6d6343eb1")))
        `(def! ~U (alloc ~U (* (+ ~u1 ~v1) (+ ~u2 ~v2))))
        `(def! ~A (alloc ~A (* ~v2 ~u1)))
        `(def! ~B (alloc ~B (* ~u2 ~v1)))
        `(def! ~C (alloc ~C (* ~EDWARDS_D (* ~A ~B))))
        `(def! ~u3 (alloc-input ~u3 (/ (+ ~A ~B) (+ scalar::one ~C))))
        `(def! ~v3 (alloc-input ~v3 (/ (- (- ~U ~A) ~B) (- scalar::one ~C))))        
  `(enforce  
    ((scalar::one ~u1) (scalar::one ~v1))
    ((scalar::one ~u2) (scalar::one ~v2))
    (scalar::one ~U)
   )
  `(enforce
    (~EDWARDS_D ~A)
    (scalar::one ~B)
    (scalar::one ~C)
   )
  `(enforce
    ((scalar::one cs::one)(scalar::one ~C))
    (scalar::one ~u3)
    ((scalar::one ~A) (scalar::one ~B))
   )
  `(enforce
    ((scalar::one cs::one) (scalar::one::neg ~C))
    (scalar::one ~v3)
    ((scalar::one ~U) (scalar::one::neg ~A) (scalar::one::neg ~B))
   )
  )
  ;; improve return values
)
))

(def! param4 (scalar "015d8c7f5b43fe33f7891142c001d9251f3abeeb98fad3e87b0dc53c4ebf1891"))
(def! param3 (scalar "15a36d1f0f390d8852a35a8c1908dd87a361ee3fd48fdf77b9819dc82d90607e"))
(def! param2 (scalar "015d8c7f5b43fe33f7891142c001d9251f3abeeb98fad3e87b0dc53c4ebf1891"))
(def! param1 (scalar "15a36d1f0f390d8852a35a8c1908dd87a361ee3fd48fdf77b9819dc82d90607e"))

(prove (
    (def! result1 (jubjub-add param1 param2 param3 param4))
    (println 'jubjub-result result1)
))