--- /dev/null
+import "JavaBuiltin" as Java\r
+\r
+main = foldl Java.iadd (0 :: Integer) (concat (concat (Single (1 :: Integer)) \r
+ (Single (2 :: Integer))) (Single (3 :: Integer))) \r
+\r
+data Digit a = Digit1 a\r
+ | Digit2 a a\r
+ | Digit3 a a a\r
+ | Digit4 a a a a\r
+data Node a = Node2 a a | Node3 a a a\r
+data FingerTree a = Empty | Single a | Deep (Digit a) (FingerTree (Node a)) (Digit a)\r
+\r
+insertL :: a -> FingerTree a -> FingerTree a\r
+insertL a Empty = Single a\r
+insertL a (Single b) = Deep (Digit1 a) Empty (Digit1 b)\r
+insertL a (Deep (Digit1 b) m r) = Deep (Digit2 a b) m r\r
+insertL a (Deep (Digit2 b c) m r) = Deep (Digit3 a b c) m r\r
+insertL a (Deep (Digit3 b c d) m r) = Deep (Digit4 a b c d) m r\r
+insertL a (Deep (Digit4 b c d e) m r) = Deep (Digit2 a b) (insertL (Node3 c d e) m) r\r
+\r
+insertR :: FingerTree a -> a -> FingerTree a\r
+insertR Empty a = Single a\r
+insertR (Single a) b = Deep (Digit1 a) Empty (Digit1 b)\r
+insertR (Deep l m (Digit1 a)) b = Deep l m (Digit2 a b)\r
+insertR (Deep l m (Digit2 a b)) c = Deep l m (Digit3 a b c)\r
+insertR (Deep l m (Digit3 a b c)) d = Deep l m (Digit4 a b c d)\r
+insertR (Deep l m (Digit4 a b c d)) e = Deep l (insertR m (Node3 a b c)) (Digit2 d e)\r
+\r
+foldl :: (a -> b -> a) -> a -> FingerTree b -> a\r
+foldl f init Empty = init\r
+foldl f init (Single x) = f init x\r
+foldl f init (Deep l m r) = foldlD (foldl foldlN (foldlD init l) m) r\r
+ where\r
+ foldlD init (Digit1 a) = f init a\r
+ foldlD init (Digit2 a b) = f (f init a) b\r
+ foldlD init (Digit3 a b c) = f (f (f init a) b) c\r
+ foldlD init (Digit4 a b c d) = f (f (f (f init a) b) c) d\r
+ \r
+ foldlN init (Node2 a b) = f (f init a) b\r
+ foldlN init (Node3 a b c) = f (f (f init a) b) c\r
+\r
+data View a = Nil | Cons a (FingerTree a)\r
+\r
+viewL :: FingerTree a -> View a\r
+viewL Empty = Nil\r
+viewL (Single a) = Cons a Empty\r
+viewL (Deep (Digit1 a) m r) = Cons a tail\r
+ where\r
+ tail = match viewL m with\r
+ Nil -> digitToFingerTree r\r
+ Cons h t -> Deep (nodeToDigit h) t r\r
+viewL (Deep (Digit2 a b) m r) = Cons a (Deep (Digit1 a) m r)\r
+viewL (Deep (Digit3 a b c) m r) = Cons a (Deep (Digit2 a b) m r)\r
+viewL (Deep (Digit4 a b c d) m r) = Cons a (Deep (Digit3 a b c) m r)\r
+\r
+concat :: FingerTree a -> FingerTree a -> FingerTree a\r
+concat Empty a = a\r
+concat a Empty = a\r
+concat (Single a) b = insertL a b\r
+concat a (Single b) = insertR a b\r
+concat (Deep l1 m1 r1) (Deep l2 m2 r2) = Deep l1 mm r2\r
+ where\r
+ mm = concatAux m1 (digitsToNodes r1 l2) m2\r
+ \r
+// --- Implementation details -------------------------------------------------\r
+\r
+digitToFingerTree :: Digit a -> FingerTree a\r
+digitToFingerTree (Digit1 a) = Single a\r
+digitToFingerTree (Digit2 a b) = Deep (Digit1 a) Empty (Digit1 b)\r
+digitToFingerTree (Digit3 a b c) = Deep (Digit2 a b) Empty (Digit1 c)\r
+digitToFingerTree (Digit4 a b c d) = Deep (Digit2 a b) Empty (Digit2 c d)\r
+\r
+nodeToDigit :: Node a -> Digit a\r
+nodeToDigit (Node2 a b) = Digit2 a b\r
+nodeToDigit (Node3 a b c) = Digit3 a b c\r
+ \r
+concatAux :: FingerTree a -> Digit a -> FingerTree a -> FingerTree a\r
+concatAux Empty ds a = insertLD ds a\r
+concatAux a ds Empty = insertRD a ds\r
+concatAux (Single a) ds b = insertL a (insertLD ds b)\r
+concatAux a ds (Single b) = insertR (insertRD a ds) b\r
+concatAux (Deep l1 m1 r1) ds (Deep l2 m2 r2) = Deep l1 mm r2\r
+ where\r
+ mm = concatAux m1 (digitsToNodes3 r1 ds r2) m2\r
+\r
+insertLD :: Digit a -> FingerTree a -> FingerTree a\r
+insertLD (Digit1 a) t = insertL a t\r
+insertLD (Digit2 a b) t = insertL a (insertL b t)\r
+insertLD (Digit3 a b c) t = insertL a (insertL b (insertL c t))\r
+insertLD (Digit4 a b c d) t = insertL a (insertL b (insertL c (insertL d t)))\r
+\r
+insertRD :: FingerTree a -> Digit a -> FingerTree a\r
+insertRD t (Digit1 a) = insertR t a\r
+insertRD t (Digit2 a b) = insertR (insertR t a) b\r
+insertRD t (Digit3 a b c) = insertR (insertR (insertR t a) b) c\r
+insertRD t (Digit4 a b c d) = insertR (insertR (insertR (insertR t a) b) c) d\r
+ \r
+digitsToNodes :: Digit a -> Digit a -> Digit (Node a)\r
+digitsToNodes (Digit1 a) x = dd1 a x\r
+digitsToNodes (Digit2 a b) x = dd2 a b x \r
+digitsToNodes (Digit3 a b c) x = dd3 a b c x\r
+digitsToNodes (Digit4 a b c d) x = dd4 a b c d x \r
+\r
+digitsToNodes3 :: Digit a -> Digit a -> Digit a -> Digit (Node a)\r
+digitsToNodes3 (Digit1 a) x y = ddd1 a x y\r
+digitsToNodes3 (Digit2 a b) x y = ddd2 a b x y\r
+digitsToNodes3 (Digit3 a b c) x y = ddd3 a b c x y\r
+digitsToNodes3 (Digit4 a b c d) x y = ddd4 a b c d x y \r
+ \r
+d2 a b = Digit1 (Node2 a b)\r
+d3 a b c = Digit1 (Node3 a b c)\r
+d4 a b c d = Digit2 (Node2 a b) (Node2 c d)\r
+d5 a b c d e = Digit2 (Node3 a b c) (Node2 d e)\r
+d6 a b c d e f = Digit2 (Node3 a b c) (Node3 d e f)\r
+d7 a b c d e f g = Digit3 (Node3 a b c) (Node2 d e) (Node2 f g)\r
+d8 a b c d e f g h = Digit3 (Node3 a b c) (Node3 d e f) (Node2 g h)\r
+d9 a b c d e f g h i = Digit3 (Node3 a b c) (Node3 d e f) (Node3 g h i)\r
+d10 a b c d e f g h i j = Digit4 (Node3 a b c) (Node3 d e f) (Node2 g h) (Node2 i j)\r
+d11 a b c d e f g h i j k = Digit4 (Node3 a b c) (Node3 d e f) (Node3 g h i) (Node2 j k)\r
+d12 a b c d e f g h i j k l = Digit4 (Node3 a b c) (Node3 d e f) (Node3 g h i) (Node3 j k l)\r
+\r
+dd1 a (Digit1 b) = d2 a b\r
+dd1 a (Digit2 b c) = d3 a b c\r
+dd1 a (Digit3 b c d) = d4 a b c d\r
+dd1 a (Digit4 b c d e) = d5 a b c d e\r
+dd2 a b (Digit1 c) = d3 a b c\r
+dd2 a b (Digit2 c d) = d4 a b c d\r
+dd2 a b (Digit3 c d e) = d5 a b c d e\r
+dd2 a b (Digit4 c d e f) = d6 a b c d e f\r
+dd3 a b c (Digit1 d) = d4 a b c d\r
+dd3 a b c (Digit2 d e) = d5 a b c d e\r
+dd3 a b c (Digit3 d e f) = d6 a b c d e f\r
+dd3 a b c (Digit4 d e f g) = d7 a b c d e f g\r
+dd4 a b c d (Digit1 e) = d5 a b c d e\r
+dd4 a b c d (Digit2 e f) = d6 a b c d e f\r
+dd4 a b c d (Digit3 e f g) = d7 a b c d e f g\r
+dd4 a b c d (Digit4 e f g h) = d8 a b c d e f g h\r
+dd5 a b c d e (Digit1 f) = d6 a b c d e f\r
+dd5 a b c d e (Digit2 f g) = d7 a b c d e f g\r
+dd5 a b c d e (Digit3 f g h) = d8 a b c d e f g h\r
+dd5 a b c d e (Digit4 f g h i) = d9 a b c d e f g h i\r
+dd6 a b c d e f (Digit1 g) = d7 a b c d e f g\r
+dd6 a b c d e f (Digit2 g h) = d8 a b c d e f g h\r
+dd6 a b c d e f (Digit3 g h i) = d9 a b c d e f g h i\r
+dd6 a b c d e f (Digit4 g h i j) = d10 a b c d e f g h i j\r
+dd7 a b c d e f g (Digit1 h) = d8 a b c d e f g h\r
+dd7 a b c d e f g (Digit2 h i) = d9 a b c d e f g h i\r
+dd7 a b c d e f g (Digit3 h i j) = d10 a b c d e f g h i j\r
+dd7 a b c d e f g (Digit4 h i j k) = d11 a b c d e f g h i j k\r
+dd8 a b c d e f g h (Digit1 i) = d9 a b c d e f g h i\r
+dd8 a b c d e f g h (Digit2 i j) = d10 a b c d e f g h i j\r
+dd8 a b c d e f g h (Digit3 i j k) = d11 a b c d e f g h i j k\r
+dd8 a b c d e f g h (Digit4 i j k l) = d12 a b c d e f g h i j k l\r
+\r
+ddd1 a (Digit1 b) y = dd2 a b y\r
+ddd1 a (Digit2 b c) y = dd3 a b c y\r
+ddd1 a (Digit3 b c d) y = dd4 a b c d y\r
+ddd1 a (Digit4 b c d e) y = dd5 a b c d e y\r
+ddd2 a b (Digit1 c) y = dd3 a b c y\r
+ddd2 a b (Digit2 c d) y = dd4 a b c d y\r
+ddd2 a b (Digit3 c d e) y = dd5 a b c d e y\r
+ddd2 a b (Digit4 c d e f) y = dd6 a b c d e f y\r
+ddd3 a b c (Digit1 d) y = dd4 a b c d y\r
+ddd3 a b c (Digit2 d e) y = dd5 a b c d e y\r
+ddd3 a b c (Digit3 d e f) y = dd6 a b c d e f y\r
+ddd3 a b c (Digit4 d e f g) y = dd7 a b c d e f g y\r
+ddd4 a b c d (Digit1 e) y = dd5 a b c d e y\r
+ddd4 a b c d (Digit2 e f) y = dd6 a b c d e f y\r
+ddd4 a b c d (Digit3 e f g) y = dd7 a b c d e f g y\r
+ddd4 a b c d (Digit4 e f g h) y = dd8 a b c d e f g h y\r
+\r
+--\r
+6
\ No newline at end of file
Code Review / simantics / platform.git / blobdiff