diff options
Diffstat (limited to 'third_party/bazel/rules_haskell/examples/vector/Data/Vector/Fusion/Bundle/Monadic.hs')
| -rw-r--r-- | third_party/bazel/rules_haskell/examples/vector/Data/Vector/Fusion/Bundle/Monadic.hs | 1106 |
1 files changed, 0 insertions, 1106 deletions
diff --git a/third_party/bazel/rules_haskell/examples/vector/Data/Vector/Fusion/Bundle/Monadic.hs b/third_party/bazel/rules_haskell/examples/vector/Data/Vector/Fusion/Bundle/Monadic.hs deleted file mode 100644 index 46f4a165f8..0000000000 --- a/third_party/bazel/rules_haskell/examples/vector/Data/Vector/Fusion/Bundle/Monadic.hs +++ /dev/null @@ -1,1106 +0,0 @@ -{-# LANGUAGE CPP, ExistentialQuantification, MultiParamTypeClasses, FlexibleInstances, Rank2Types, BangPatterns, KindSignatures, GADTs, ScopedTypeVariables #-} - --- | --- Module : Data.Vector.Fusion.Bundle.Monadic --- Copyright : (c) Roman Leshchinskiy 2008-2010 --- License : BSD-style --- --- Maintainer : Roman Leshchinskiy <rl@cse.unsw.edu.au> --- Stability : experimental --- Portability : non-portable --- --- Monadic bundles. --- - -module Data.Vector.Fusion.Bundle.Monadic ( - Bundle(..), Chunk(..), - - -- * Size hints - size, sized, - - -- * Length - length, null, - - -- * Construction - empty, singleton, cons, snoc, replicate, replicateM, generate, generateM, (++), - - -- * Accessing elements - head, last, (!!), (!?), - - -- * Substreams - slice, init, tail, take, drop, - - -- * Mapping - map, mapM, mapM_, trans, unbox, concatMap, flatten, - - -- * Zipping - indexed, indexedR, zipWithM_, - zipWithM, zipWith3M, zipWith4M, zipWith5M, zipWith6M, - zipWith, zipWith3, zipWith4, zipWith5, zipWith6, - zip, zip3, zip4, zip5, zip6, - - -- * Comparisons - eqBy, cmpBy, - - -- * Filtering - filter, filterM, takeWhile, takeWhileM, dropWhile, dropWhileM, - - -- * Searching - elem, notElem, find, findM, findIndex, findIndexM, - - -- * Folding - foldl, foldlM, foldl1, foldl1M, foldM, fold1M, - foldl', foldlM', foldl1', foldl1M', foldM', fold1M', - foldr, foldrM, foldr1, foldr1M, - - -- * Specialised folds - and, or, concatMapM, - - -- * Unfolding - unfoldr, unfoldrM, - unfoldrN, unfoldrNM, - iterateN, iterateNM, - - -- * Scans - prescanl, prescanlM, prescanl', prescanlM', - postscanl, postscanlM, postscanl', postscanlM', - scanl, scanlM, scanl', scanlM', - scanl1, scanl1M, scanl1', scanl1M', - - -- * Enumerations - enumFromStepN, enumFromTo, enumFromThenTo, - - -- * Conversions - toList, fromList, fromListN, unsafeFromList, - fromVector, reVector, fromVectors, concatVectors, - fromStream, chunks, elements -) where - -import Data.Vector.Generic.Base -import qualified Data.Vector.Generic.Mutable.Base as M -import Data.Vector.Fusion.Bundle.Size -import Data.Vector.Fusion.Util ( Box(..), delay_inline ) -import Data.Vector.Fusion.Stream.Monadic ( Stream(..), Step(..) ) -import qualified Data.Vector.Fusion.Stream.Monadic as S -import Control.Monad.Primitive - -import qualified Data.List as List -import Data.Char ( ord ) -import GHC.Base ( unsafeChr ) -import Control.Monad ( liftM ) -import Prelude hiding ( length, null, - replicate, (++), - head, last, (!!), - init, tail, take, drop, - map, mapM, mapM_, concatMap, - zipWith, zipWith3, zip, zip3, - filter, takeWhile, dropWhile, - elem, notElem, - foldl, foldl1, foldr, foldr1, - and, or, - scanl, scanl1, - enumFromTo, enumFromThenTo ) - -import Data.Int ( Int8, Int16, Int32 ) -import Data.Word ( Word8, Word16, Word32, Word64 ) - -#if !MIN_VERSION_base(4,8,0) -import Data.Word ( Word ) -#endif - -#include "vector.h" -#include "MachDeps.h" - -#if WORD_SIZE_IN_BITS > 32 -import Data.Int ( Int64 ) -#endif - -data Chunk v a = Chunk Int (forall m. (PrimMonad m, Vector v a) => Mutable v (PrimState m) a -> m ()) - --- | Monadic streams -data Bundle m v a = Bundle { sElems :: Stream m a - , sChunks :: Stream m (Chunk v a) - , sVector :: Maybe (v a) - , sSize :: Size - } - -fromStream :: Monad m => Stream m a -> Size -> Bundle m v a -{-# INLINE fromStream #-} -fromStream (Stream step t) sz = Bundle (Stream step t) (Stream step' t) Nothing sz - where - step' s = do r <- step s - return $ fmap (\x -> Chunk 1 (\v -> M.basicUnsafeWrite v 0 x)) r - -chunks :: Bundle m v a -> Stream m (Chunk v a) -{-# INLINE chunks #-} -chunks = sChunks - -elements :: Bundle m v a -> Stream m a -{-# INLINE elements #-} -elements = sElems - --- | 'Size' hint of a 'Bundle' -size :: Bundle m v a -> Size -{-# INLINE size #-} -size = sSize - --- | Attach a 'Size' hint to a 'Bundle' -sized :: Bundle m v a -> Size -> Bundle m v a -{-# INLINE_FUSED sized #-} -sized s sz = s { sSize = sz } - --- Length --- ------ - --- | Length of a 'Bundle' -length :: Monad m => Bundle m v a -> m Int -{-# INLINE_FUSED length #-} -length Bundle{sSize = Exact n} = return n -length Bundle{sChunks = s} = S.foldl' (\n (Chunk k _) -> n+k) 0 s - --- | Check if a 'Bundle' is empty -null :: Monad m => Bundle m v a -> m Bool -{-# INLINE_FUSED null #-} -null Bundle{sSize = Exact n} = return (n == 0) -null Bundle{sChunks = s} = S.foldr (\(Chunk n _) z -> n == 0 && z) True s - --- Construction --- ------------ - --- | Empty 'Bundle' -empty :: Monad m => Bundle m v a -{-# INLINE_FUSED empty #-} -empty = fromStream S.empty (Exact 0) - --- | Singleton 'Bundle' -singleton :: Monad m => a -> Bundle m v a -{-# INLINE_FUSED singleton #-} -singleton x = fromStream (S.singleton x) (Exact 1) - --- | Replicate a value to a given length -replicate :: Monad m => Int -> a -> Bundle m v a -{-# INLINE_FUSED replicate #-} -replicate n x = Bundle (S.replicate n x) - (S.singleton $ Chunk len (\v -> M.basicSet v x)) - Nothing - (Exact len) - where - len = delay_inline max n 0 - --- | Yield a 'Bundle' of values obtained by performing the monadic action the --- given number of times -replicateM :: Monad m => Int -> m a -> Bundle m v a -{-# INLINE_FUSED replicateM #-} --- NOTE: We delay inlining max here because GHC will create a join point for --- the call to newArray# otherwise which is not really nice. -replicateM n p = fromStream (S.replicateM n p) (Exact (delay_inline max n 0)) - -generate :: Monad m => Int -> (Int -> a) -> Bundle m v a -{-# INLINE generate #-} -generate n f = generateM n (return . f) - --- | Generate a stream from its indices -generateM :: Monad m => Int -> (Int -> m a) -> Bundle m v a -{-# INLINE_FUSED generateM #-} -generateM n f = fromStream (S.generateM n f) (Exact (delay_inline max n 0)) - --- | Prepend an element -cons :: Monad m => a -> Bundle m v a -> Bundle m v a -{-# INLINE cons #-} -cons x s = singleton x ++ s - --- | Append an element -snoc :: Monad m => Bundle m v a -> a -> Bundle m v a -{-# INLINE snoc #-} -snoc s x = s ++ singleton x - -infixr 5 ++ --- | Concatenate two 'Bundle's -(++) :: Monad m => Bundle m v a -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED (++) #-} -Bundle sa ta _ na ++ Bundle sb tb _ nb = Bundle (sa S.++ sb) (ta S.++ tb) Nothing (na + nb) - --- Accessing elements --- ------------------ - --- | First element of the 'Bundle' or error if empty -head :: Monad m => Bundle m v a -> m a -{-# INLINE_FUSED head #-} -head = S.head . sElems - --- | Last element of the 'Bundle' or error if empty -last :: Monad m => Bundle m v a -> m a -{-# INLINE_FUSED last #-} -last = S.last . sElems - -infixl 9 !! --- | Element at the given position -(!!) :: Monad m => Bundle m v a -> Int -> m a -{-# INLINE (!!) #-} -b !! i = sElems b S.!! i - -infixl 9 !? --- | Element at the given position or 'Nothing' if out of bounds -(!?) :: Monad m => Bundle m v a -> Int -> m (Maybe a) -{-# INLINE (!?) #-} -b !? i = sElems b S.!? i - --- Substreams --- ---------- - --- | Extract a substream of the given length starting at the given position. -slice :: Monad m => Int -- ^ starting index - -> Int -- ^ length - -> Bundle m v a - -> Bundle m v a -{-# INLINE slice #-} -slice i n s = take n (drop i s) - --- | All but the last element -init :: Monad m => Bundle m v a -> Bundle m v a -{-# INLINE_FUSED init #-} -init Bundle{sElems = s, sSize = sz} = fromStream (S.init s) (sz-1) - --- | All but the first element -tail :: Monad m => Bundle m v a -> Bundle m v a -{-# INLINE_FUSED tail #-} -tail Bundle{sElems = s, sSize = sz} = fromStream (S.tail s) (sz-1) - --- | The first @n@ elements -take :: Monad m => Int -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED take #-} -take n Bundle{sElems = s, sSize = sz} = fromStream (S.take n s) (smaller (Exact n) sz) - --- | All but the first @n@ elements -drop :: Monad m => Int -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED drop #-} -drop n Bundle{sElems = s, sSize = sz} = - fromStream (S.drop n s) (clampedSubtract sz (Exact n)) - --- Mapping --- ------- - -instance Monad m => Functor (Bundle m v) where - {-# INLINE fmap #-} - fmap = map - --- | Map a function over a 'Bundle' -map :: Monad m => (a -> b) -> Bundle m v a -> Bundle m v b -{-# INLINE map #-} -map f = mapM (return . f) - --- | Map a monadic function over a 'Bundle' -mapM :: Monad m => (a -> m b) -> Bundle m v a -> Bundle m v b -{-# INLINE_FUSED mapM #-} -mapM f Bundle{sElems = s, sSize = n} = fromStream (S.mapM f s) n - --- | Execute a monadic action for each element of the 'Bundle' -mapM_ :: Monad m => (a -> m b) -> Bundle m v a -> m () -{-# INLINE_FUSED mapM_ #-} -mapM_ m = S.mapM_ m . sElems - --- | Transform a 'Bundle' to use a different monad -trans :: (Monad m, Monad m') => (forall z. m z -> m' z) - -> Bundle m v a -> Bundle m' v a -{-# INLINE_FUSED trans #-} -trans f Bundle{sElems = s, sChunks = cs, sVector = v, sSize = n} - = Bundle { sElems = S.trans f s, sChunks = S.trans f cs, sVector = v, sSize = n } - -unbox :: Monad m => Bundle m v (Box a) -> Bundle m v a -{-# INLINE_FUSED unbox #-} -unbox Bundle{sElems = s, sSize = n} = fromStream (S.unbox s) n - --- Zipping --- ------- - --- | Pair each element in a 'Bundle' with its index -indexed :: Monad m => Bundle m v a -> Bundle m v (Int,a) -{-# INLINE_FUSED indexed #-} -indexed Bundle{sElems = s, sSize = n} = fromStream (S.indexed s) n - --- | Pair each element in a 'Bundle' with its index, starting from the right --- and counting down -indexedR :: Monad m => Int -> Bundle m v a -> Bundle m v (Int,a) -{-# INLINE_FUSED indexedR #-} -indexedR m Bundle{sElems = s, sSize = n} = fromStream (S.indexedR m s) n - --- | Zip two 'Bundle's with the given monadic function -zipWithM :: Monad m => (a -> b -> m c) -> Bundle m v a -> Bundle m v b -> Bundle m v c -{-# INLINE_FUSED zipWithM #-} -zipWithM f Bundle{sElems = sa, sSize = na} - Bundle{sElems = sb, sSize = nb} = fromStream (S.zipWithM f sa sb) (smaller na nb) - --- FIXME: This might expose an opportunity for inplace execution. -{-# RULES - -"zipWithM xs xs [Vector.Bundle]" forall f xs. - zipWithM f xs xs = mapM (\x -> f x x) xs #-} - - -zipWithM_ :: Monad m => (a -> b -> m c) -> Bundle m v a -> Bundle m v b -> m () -{-# INLINE zipWithM_ #-} -zipWithM_ f sa sb = S.zipWithM_ f (sElems sa) (sElems sb) - -zipWith3M :: Monad m => (a -> b -> c -> m d) -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d -{-# INLINE_FUSED zipWith3M #-} -zipWith3M f Bundle{sElems = sa, sSize = na} - Bundle{sElems = sb, sSize = nb} - Bundle{sElems = sc, sSize = nc} - = fromStream (S.zipWith3M f sa sb sc) (smaller na (smaller nb nc)) - -zipWith4M :: Monad m => (a -> b -> c -> d -> m e) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -{-# INLINE zipWith4M #-} -zipWith4M f sa sb sc sd - = zipWithM (\(a,b) (c,d) -> f a b c d) (zip sa sb) (zip sc sd) - -zipWith5M :: Monad m => (a -> b -> c -> d -> e -> m f) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -> Bundle m v f -{-# INLINE zipWith5M #-} -zipWith5M f sa sb sc sd se - = zipWithM (\(a,b,c) (d,e) -> f a b c d e) (zip3 sa sb sc) (zip sd se) - -zipWith6M :: Monad m => (a -> b -> c -> d -> e -> f -> m g) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -> Bundle m v f -> Bundle m v g -{-# INLINE zipWith6M #-} -zipWith6M fn sa sb sc sd se sf - = zipWithM (\(a,b,c) (d,e,f) -> fn a b c d e f) (zip3 sa sb sc) - (zip3 sd se sf) - -zipWith :: Monad m => (a -> b -> c) -> Bundle m v a -> Bundle m v b -> Bundle m v c -{-# INLINE zipWith #-} -zipWith f = zipWithM (\a b -> return (f a b)) - -zipWith3 :: Monad m => (a -> b -> c -> d) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d -{-# INLINE zipWith3 #-} -zipWith3 f = zipWith3M (\a b c -> return (f a b c)) - -zipWith4 :: Monad m => (a -> b -> c -> d -> e) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -{-# INLINE zipWith4 #-} -zipWith4 f = zipWith4M (\a b c d -> return (f a b c d)) - -zipWith5 :: Monad m => (a -> b -> c -> d -> e -> f) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -> Bundle m v f -{-# INLINE zipWith5 #-} -zipWith5 f = zipWith5M (\a b c d e -> return (f a b c d e)) - -zipWith6 :: Monad m => (a -> b -> c -> d -> e -> f -> g) - -> Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -> Bundle m v f -> Bundle m v g -{-# INLINE zipWith6 #-} -zipWith6 fn = zipWith6M (\a b c d e f -> return (fn a b c d e f)) - -zip :: Monad m => Bundle m v a -> Bundle m v b -> Bundle m v (a,b) -{-# INLINE zip #-} -zip = zipWith (,) - -zip3 :: Monad m => Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v (a,b,c) -{-# INLINE zip3 #-} -zip3 = zipWith3 (,,) - -zip4 :: Monad m => Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v (a,b,c,d) -{-# INLINE zip4 #-} -zip4 = zipWith4 (,,,) - -zip5 :: Monad m => Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -> Bundle m v (a,b,c,d,e) -{-# INLINE zip5 #-} -zip5 = zipWith5 (,,,,) - -zip6 :: Monad m => Bundle m v a -> Bundle m v b -> Bundle m v c -> Bundle m v d - -> Bundle m v e -> Bundle m v f -> Bundle m v (a,b,c,d,e,f) -{-# INLINE zip6 #-} -zip6 = zipWith6 (,,,,,) - --- Comparisons --- ----------- - --- | Check if two 'Bundle's are equal -eqBy :: (Monad m) => (a -> b -> Bool) -> Bundle m v a -> Bundle m v b -> m Bool -{-# INLINE_FUSED eqBy #-} -eqBy eq x y = S.eqBy eq (sElems x) (sElems y) - --- | Lexicographically compare two 'Bundle's -cmpBy :: (Monad m) => (a -> b -> Ordering) -> Bundle m v a -> Bundle m v b -> m Ordering -{-# INLINE_FUSED cmpBy #-} -cmpBy cmp x y = S.cmpBy cmp (sElems x) (sElems y) - --- Filtering --- --------- - --- | Drop elements which do not satisfy the predicate -filter :: Monad m => (a -> Bool) -> Bundle m v a -> Bundle m v a -{-# INLINE filter #-} -filter f = filterM (return . f) - --- | Drop elements which do not satisfy the monadic predicate -filterM :: Monad m => (a -> m Bool) -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED filterM #-} -filterM f Bundle{sElems = s, sSize = n} = fromStream (S.filterM f s) (toMax n) - --- | Longest prefix of elements that satisfy the predicate -takeWhile :: Monad m => (a -> Bool) -> Bundle m v a -> Bundle m v a -{-# INLINE takeWhile #-} -takeWhile f = takeWhileM (return . f) - --- | Longest prefix of elements that satisfy the monadic predicate -takeWhileM :: Monad m => (a -> m Bool) -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED takeWhileM #-} -takeWhileM f Bundle{sElems = s, sSize = n} = fromStream (S.takeWhileM f s) (toMax n) - --- | Drop the longest prefix of elements that satisfy the predicate -dropWhile :: Monad m => (a -> Bool) -> Bundle m v a -> Bundle m v a -{-# INLINE dropWhile #-} -dropWhile f = dropWhileM (return . f) - --- | Drop the longest prefix of elements that satisfy the monadic predicate -dropWhileM :: Monad m => (a -> m Bool) -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED dropWhileM #-} -dropWhileM f Bundle{sElems = s, sSize = n} = fromStream (S.dropWhileM f s) (toMax n) - --- Searching --- --------- - -infix 4 `elem` --- | Check whether the 'Bundle' contains an element -elem :: (Monad m, Eq a) => a -> Bundle m v a -> m Bool -{-# INLINE_FUSED elem #-} -elem x = S.elem x . sElems - -infix 4 `notElem` --- | Inverse of `elem` -notElem :: (Monad m, Eq a) => a -> Bundle m v a -> m Bool -{-# INLINE notElem #-} -notElem x = S.notElem x . sElems - --- | Yield 'Just' the first element that satisfies the predicate or 'Nothing' --- if no such element exists. -find :: Monad m => (a -> Bool) -> Bundle m v a -> m (Maybe a) -{-# INLINE find #-} -find f = findM (return . f) - --- | Yield 'Just' the first element that satisfies the monadic predicate or --- 'Nothing' if no such element exists. -findM :: Monad m => (a -> m Bool) -> Bundle m v a -> m (Maybe a) -{-# INLINE_FUSED findM #-} -findM f = S.findM f . sElems - --- | Yield 'Just' the index of the first element that satisfies the predicate --- or 'Nothing' if no such element exists. -findIndex :: Monad m => (a -> Bool) -> Bundle m v a -> m (Maybe Int) -{-# INLINE_FUSED findIndex #-} -findIndex f = findIndexM (return . f) - --- | Yield 'Just' the index of the first element that satisfies the monadic --- predicate or 'Nothing' if no such element exists. -findIndexM :: Monad m => (a -> m Bool) -> Bundle m v a -> m (Maybe Int) -{-# INLINE_FUSED findIndexM #-} -findIndexM f = S.findIndexM f . sElems - --- Folding --- ------- - --- | Left fold -foldl :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> m a -{-# INLINE foldl #-} -foldl f = foldlM (\a b -> return (f a b)) - --- | Left fold with a monadic operator -foldlM :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> m a -{-# INLINE_FUSED foldlM #-} -foldlM m z = S.foldlM m z . sElems - --- | Same as 'foldlM' -foldM :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> m a -{-# INLINE foldM #-} -foldM = foldlM - --- | Left fold over a non-empty 'Bundle' -foldl1 :: Monad m => (a -> a -> a) -> Bundle m v a -> m a -{-# INLINE foldl1 #-} -foldl1 f = foldl1M (\a b -> return (f a b)) - --- | Left fold over a non-empty 'Bundle' with a monadic operator -foldl1M :: Monad m => (a -> a -> m a) -> Bundle m v a -> m a -{-# INLINE_FUSED foldl1M #-} -foldl1M f = S.foldl1M f . sElems - --- | Same as 'foldl1M' -fold1M :: Monad m => (a -> a -> m a) -> Bundle m v a -> m a -{-# INLINE fold1M #-} -fold1M = foldl1M - --- | Left fold with a strict accumulator -foldl' :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> m a -{-# INLINE foldl' #-} -foldl' f = foldlM' (\a b -> return (f a b)) - --- | Left fold with a strict accumulator and a monadic operator -foldlM' :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> m a -{-# INLINE_FUSED foldlM' #-} -foldlM' m z = S.foldlM' m z . sElems - --- | Same as 'foldlM'' -foldM' :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> m a -{-# INLINE foldM' #-} -foldM' = foldlM' - --- | Left fold over a non-empty 'Bundle' with a strict accumulator -foldl1' :: Monad m => (a -> a -> a) -> Bundle m v a -> m a -{-# INLINE foldl1' #-} -foldl1' f = foldl1M' (\a b -> return (f a b)) - --- | Left fold over a non-empty 'Bundle' with a strict accumulator and a --- monadic operator -foldl1M' :: Monad m => (a -> a -> m a) -> Bundle m v a -> m a -{-# INLINE_FUSED foldl1M' #-} -foldl1M' f = S.foldl1M' f . sElems - --- | Same as 'foldl1M'' -fold1M' :: Monad m => (a -> a -> m a) -> Bundle m v a -> m a -{-# INLINE fold1M' #-} -fold1M' = foldl1M' - --- | Right fold -foldr :: Monad m => (a -> b -> b) -> b -> Bundle m v a -> m b -{-# INLINE foldr #-} -foldr f = foldrM (\a b -> return (f a b)) - --- | Right fold with a monadic operator -foldrM :: Monad m => (a -> b -> m b) -> b -> Bundle m v a -> m b -{-# INLINE_FUSED foldrM #-} -foldrM f z = S.foldrM f z . sElems - --- | Right fold over a non-empty stream -foldr1 :: Monad m => (a -> a -> a) -> Bundle m v a -> m a -{-# INLINE foldr1 #-} -foldr1 f = foldr1M (\a b -> return (f a b)) - --- | Right fold over a non-empty stream with a monadic operator -foldr1M :: Monad m => (a -> a -> m a) -> Bundle m v a -> m a -{-# INLINE_FUSED foldr1M #-} -foldr1M f = S.foldr1M f . sElems - --- Specialised folds --- ----------------- - -and :: Monad m => Bundle m v Bool -> m Bool -{-# INLINE_FUSED and #-} -and = S.and . sElems - -or :: Monad m => Bundle m v Bool -> m Bool -{-# INLINE_FUSED or #-} -or = S.or . sElems - -concatMap :: Monad m => (a -> Bundle m v b) -> Bundle m v a -> Bundle m v b -{-# INLINE concatMap #-} -concatMap f = concatMapM (return . f) - -concatMapM :: Monad m => (a -> m (Bundle m v b)) -> Bundle m v a -> Bundle m v b -{-# INLINE_FUSED concatMapM #-} -concatMapM f Bundle{sElems = s} = fromStream (S.concatMapM (liftM sElems . f) s) Unknown - --- | Create a 'Bundle' of values from a 'Bundle' of streamable things -flatten :: Monad m => (a -> m s) -> (s -> m (Step s b)) -> Size - -> Bundle m v a -> Bundle m v b -{-# INLINE_FUSED flatten #-} -flatten mk istep sz Bundle{sElems = s} = fromStream (S.flatten mk istep s) sz - --- Unfolding --- --------- - --- | Unfold -unfoldr :: Monad m => (s -> Maybe (a, s)) -> s -> Bundle m u a -{-# INLINE_FUSED unfoldr #-} -unfoldr f = unfoldrM (return . f) - --- | Unfold with a monadic function -unfoldrM :: Monad m => (s -> m (Maybe (a, s))) -> s -> Bundle m u a -{-# INLINE_FUSED unfoldrM #-} -unfoldrM f s = fromStream (S.unfoldrM f s) Unknown - --- | Unfold at most @n@ elements -unfoldrN :: Monad m => Int -> (s -> Maybe (a, s)) -> s -> Bundle m u a -{-# INLINE_FUSED unfoldrN #-} -unfoldrN n f = unfoldrNM n (return . f) - --- | Unfold at most @n@ elements with a monadic functions -unfoldrNM :: Monad m => Int -> (s -> m (Maybe (a, s))) -> s -> Bundle m u a -{-# INLINE_FUSED unfoldrNM #-} -unfoldrNM n f s = fromStream (S.unfoldrNM n f s) (Max (delay_inline max n 0)) - --- | Apply monadic function n times to value. Zeroth element is original value. -iterateNM :: Monad m => Int -> (a -> m a) -> a -> Bundle m u a -{-# INLINE_FUSED iterateNM #-} -iterateNM n f x0 = fromStream (S.iterateNM n f x0) (Exact (delay_inline max n 0)) - --- | Apply function n times to value. Zeroth element is original value. -iterateN :: Monad m => Int -> (a -> a) -> a -> Bundle m u a -{-# INLINE_FUSED iterateN #-} -iterateN n f x0 = iterateNM n (return . f) x0 - --- Scans --- ----- - --- | Prefix scan -prescanl :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE prescanl #-} -prescanl f = prescanlM (\a b -> return (f a b)) - --- | Prefix scan with a monadic operator -prescanlM :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE_FUSED prescanlM #-} -prescanlM f z Bundle{sElems = s, sSize = sz} = fromStream (S.prescanlM f z s) sz - --- | Prefix scan with strict accumulator -prescanl' :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE prescanl' #-} -prescanl' f = prescanlM' (\a b -> return (f a b)) - --- | Prefix scan with strict accumulator and a monadic operator -prescanlM' :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE_FUSED prescanlM' #-} -prescanlM' f z Bundle{sElems = s, sSize = sz} = fromStream (S.prescanlM' f z s) sz - --- | Suffix scan -postscanl :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE postscanl #-} -postscanl f = postscanlM (\a b -> return (f a b)) - --- | Suffix scan with a monadic operator -postscanlM :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE_FUSED postscanlM #-} -postscanlM f z Bundle{sElems = s, sSize = sz} = fromStream (S.postscanlM f z s) sz - --- | Suffix scan with strict accumulator -postscanl' :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE postscanl' #-} -postscanl' f = postscanlM' (\a b -> return (f a b)) - --- | Suffix scan with strict acccumulator and a monadic operator -postscanlM' :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE_FUSED postscanlM' #-} -postscanlM' f z Bundle{sElems = s, sSize = sz} = fromStream (S.postscanlM' f z s) sz - --- | Haskell-style scan -scanl :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE scanl #-} -scanl f = scanlM (\a b -> return (f a b)) - --- | Haskell-style scan with a monadic operator -scanlM :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE scanlM #-} -scanlM f z s = z `cons` postscanlM f z s - --- | Haskell-style scan with strict accumulator -scanl' :: Monad m => (a -> b -> a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE scanl' #-} -scanl' f = scanlM' (\a b -> return (f a b)) - --- | Haskell-style scan with strict accumulator and a monadic operator -scanlM' :: Monad m => (a -> b -> m a) -> a -> Bundle m v b -> Bundle m v a -{-# INLINE scanlM' #-} -scanlM' f z s = z `seq` (z `cons` postscanlM f z s) - --- | Scan over a non-empty 'Bundle' -scanl1 :: Monad m => (a -> a -> a) -> Bundle m v a -> Bundle m v a -{-# INLINE scanl1 #-} -scanl1 f = scanl1M (\x y -> return (f x y)) - --- | Scan over a non-empty 'Bundle' with a monadic operator -scanl1M :: Monad m => (a -> a -> m a) -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED scanl1M #-} -scanl1M f Bundle{sElems = s, sSize = sz} = fromStream (S.scanl1M f s) sz - --- | Scan over a non-empty 'Bundle' with a strict accumulator -scanl1' :: Monad m => (a -> a -> a) -> Bundle m v a -> Bundle m v a -{-# INLINE scanl1' #-} -scanl1' f = scanl1M' (\x y -> return (f x y)) - --- | Scan over a non-empty 'Bundle' with a strict accumulator and a monadic --- operator -scanl1M' :: Monad m => (a -> a -> m a) -> Bundle m v a -> Bundle m v a -{-# INLINE_FUSED scanl1M' #-} -scanl1M' f Bundle{sElems = s, sSize = sz} = fromStream (S.scanl1M' f s) sz - --- Enumerations --- ------------ - --- The Enum class is broken for this, there just doesn't seem to be a --- way to implement this generically. We have to specialise for as many types --- as we can but this doesn't help in polymorphic loops. - --- | Yield a 'Bundle' of the given length containing the values @x@, @x+y@, --- @x+y+y@ etc. -enumFromStepN :: (Num a, Monad m) => a -> a -> Int -> Bundle m v a -{-# INLINE_FUSED enumFromStepN #-} -enumFromStepN x y n = fromStream (S.enumFromStepN x y n) (Exact (delay_inline max n 0)) - --- | Enumerate values --- --- /WARNING:/ This operation can be very inefficient. If at all possible, use --- 'enumFromStepN' instead. -enumFromTo :: (Enum a, Monad m) => a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromTo #-} -enumFromTo x y = fromList [x .. y] - --- NOTE: We use (x+1) instead of (succ x) below because the latter checks for --- overflow which can't happen here. - --- FIXME: add "too large" test for Int -enumFromTo_small :: (Integral a, Monad m) => a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromTo_small #-} -enumFromTo_small x y = x `seq` y `seq` fromStream (Stream step x) (Exact n) - where - n = delay_inline max (fromIntegral y - fromIntegral x + 1) 0 - - {-# INLINE_INNER step #-} - step z | z <= y = return $ Yield z (z+1) - | otherwise = return $ Done - -{-# RULES - -"enumFromTo<Int8> [Bundle]" - enumFromTo = enumFromTo_small :: Monad m => Int8 -> Int8 -> Bundle m v Int8 - -"enumFromTo<Int16> [Bundle]" - enumFromTo = enumFromTo_small :: Monad m => Int16 -> Int16 -> Bundle m v Int16 - -"enumFromTo<Word8> [Bundle]" - enumFromTo = enumFromTo_small :: Monad m => Word8 -> Word8 -> Bundle m v Word8 - -"enumFromTo<Word16> [Bundle]" - enumFromTo = enumFromTo_small :: Monad m => Word16 -> Word16 -> Bundle m v Word16 #-} - - - -#if WORD_SIZE_IN_BITS > 32 - -{-# RULES - -"enumFromTo<Int32> [Bundle]" - enumFromTo = enumFromTo_small :: Monad m => Int32 -> Int32 -> Bundle m v Int32 - -"enumFromTo<Word32> [Bundle]" - enumFromTo = enumFromTo_small :: Monad m => Word32 -> Word32 -> Bundle m v Word32 #-} - -#endif - --- NOTE: We could implement a generic "too large" test: --- --- len x y | x > y = 0 --- | n > 0 && n <= fromIntegral (maxBound :: Int) = fromIntegral n --- | otherwise = error --- where --- n = y-x+1 --- --- Alas, GHC won't eliminate unnecessary comparisons (such as n >= 0 for --- unsigned types). See http://hackage.haskell.org/trac/ghc/ticket/3744 --- - -enumFromTo_int :: forall m v. Monad m => Int -> Int -> Bundle m v Int -{-# INLINE_FUSED enumFromTo_int #-} -enumFromTo_int x y = x `seq` y `seq` fromStream (Stream step x) (Exact (len x y)) - where - {-# INLINE [0] len #-} - len :: Int -> Int -> Int - len u v | u > v = 0 - | otherwise = BOUNDS_CHECK(check) "enumFromTo" "vector too large" - (n > 0) - $ n - where - n = v-u+1 - - {-# INLINE_INNER step #-} - step z | z <= y = return $ Yield z (z+1) - | otherwise = return $ Done - -enumFromTo_intlike :: (Integral a, Monad m) => a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromTo_intlike #-} -enumFromTo_intlike x y = x `seq` y `seq` fromStream (Stream step x) (Exact (len x y)) - where - {-# INLINE [0] len #-} - len u v | u > v = 0 - | otherwise = BOUNDS_CHECK(check) "enumFromTo" "vector too large" - (n > 0) - $ fromIntegral n - where - n = v-u+1 - - {-# INLINE_INNER step #-} - step z | z <= y = return $ Yield z (z+1) - | otherwise = return $ Done - -{-# RULES - -"enumFromTo<Int> [Bundle]" - enumFromTo = enumFromTo_int :: Monad m => Int -> Int -> Bundle m v Int - -#if WORD_SIZE_IN_BITS > 32 - -"enumFromTo<Int64> [Bundle]" - enumFromTo = enumFromTo_intlike :: Monad m => Int64 -> Int64 -> Bundle m v Int64 #-} - -#else - -"enumFromTo<Int32> [Bundle]" - enumFromTo = enumFromTo_intlike :: Monad m => Int32 -> Int32 -> Bundle m v Int32 #-} - -#endif - - - -enumFromTo_big_word :: (Integral a, Monad m) => a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromTo_big_word #-} -enumFromTo_big_word x y = x `seq` y `seq` fromStream (Stream step x) (Exact (len x y)) - where - {-# INLINE [0] len #-} - len u v | u > v = 0 - | otherwise = BOUNDS_CHECK(check) "enumFromTo" "vector too large" - (n < fromIntegral (maxBound :: Int)) - $ fromIntegral (n+1) - where - n = v-u - - {-# INLINE_INNER step #-} - step z | z <= y = return $ Yield z (z+1) - | otherwise = return $ Done - -{-# RULES - -"enumFromTo<Word> [Bundle]" - enumFromTo = enumFromTo_big_word :: Monad m => Word -> Word -> Bundle m v Word - -"enumFromTo<Word64> [Bundle]" - enumFromTo = enumFromTo_big_word - :: Monad m => Word64 -> Word64 -> Bundle m v Word64 - -#if WORD_SIZE_IN_BITS == 32 - -"enumFromTo<Word32> [Bundle]" - enumFromTo = enumFromTo_big_word - :: Monad m => Word32 -> Word32 -> Bundle m v Word32 - -#endif - -"enumFromTo<Integer> [Bundle]" - enumFromTo = enumFromTo_big_word - :: Monad m => Integer -> Integer -> Bundle m v Integer #-} - - -#if WORD_SIZE_IN_BITS > 32 - --- FIXME: the "too large" test is totally wrong -enumFromTo_big_int :: (Integral a, Monad m) => a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromTo_big_int #-} -enumFromTo_big_int x y = x `seq` y `seq` fromStream (Stream step x) (Exact (len x y)) - where - {-# INLINE [0] len #-} - len u v | u > v = 0 - | otherwise = BOUNDS_CHECK(check) "enumFromTo" "vector too large" - (n > 0 && n <= fromIntegral (maxBound :: Int)) - $ fromIntegral n - where - n = v-u+1 - - {-# INLINE_INNER step #-} - step z | z <= y = return $ Yield z (z+1) - | otherwise = return $ Done - - -{-# RULES - -"enumFromTo<Int64> [Bundle]" - enumFromTo = enumFromTo_big_int :: Monad m => Int64 -> Int64 -> Bundle m v Int64 #-} - - - -#endif - -enumFromTo_char :: Monad m => Char -> Char -> Bundle m v Char -{-# INLINE_FUSED enumFromTo_char #-} -enumFromTo_char x y = x `seq` y `seq` fromStream (Stream step xn) (Exact n) - where - xn = ord x - yn = ord y - - n = delay_inline max 0 (yn - xn + 1) - - {-# INLINE_INNER step #-} - step zn | zn <= yn = return $ Yield (unsafeChr zn) (zn+1) - | otherwise = return $ Done - -{-# RULES - -"enumFromTo<Char> [Bundle]" - enumFromTo = enumFromTo_char #-} - - - ------------------------------------------------------------------------- - --- Specialise enumFromTo for Float and Double. --- Also, try to do something about pairs? - -enumFromTo_double :: (Monad m, Ord a, RealFrac a) => a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromTo_double #-} -enumFromTo_double n m = n `seq` m `seq` fromStream (Stream step n) (Max (len n lim)) - where - lim = m + 1/2 -- important to float out - - {-# INLINE [0] len #-} - len x y | x > y = 0 - | otherwise = BOUNDS_CHECK(check) "enumFromTo" "vector too large" - (l > 0) - $ fromIntegral l - where - l :: Integer - l = truncate (y-x)+2 - - {-# INLINE_INNER step #-} - step x | x <= lim = return $ Yield x (x+1) - | otherwise = return $ Done - -{-# RULES - -"enumFromTo<Double> [Bundle]" - enumFromTo = enumFromTo_double :: Monad m => Double -> Double -> Bundle m v Double - -"enumFromTo<Float> [Bundle]" - enumFromTo = enumFromTo_double :: Monad m => Float -> Float -> Bundle m v Float #-} - - - ------------------------------------------------------------------------- - --- | Enumerate values with a given step. --- --- /WARNING:/ This operation is very inefficient. If at all possible, use --- 'enumFromStepN' instead. -enumFromThenTo :: (Enum a, Monad m) => a -> a -> a -> Bundle m v a -{-# INLINE_FUSED enumFromThenTo #-} -enumFromThenTo x y z = fromList [x, y .. z] - --- FIXME: Specialise enumFromThenTo. - --- Conversions --- ----------- - --- | Convert a 'Bundle' to a list -toList :: Monad m => Bundle m v a -> m [a] -{-# INLINE toList #-} -toList = foldr (:) [] - --- | Convert a list to a 'Bundle' -fromList :: Monad m => [a] -> Bundle m v a -{-# INLINE fromList #-} -fromList xs = unsafeFromList Unknown xs - --- | Convert the first @n@ elements of a list to a 'Bundle' -fromListN :: Monad m => Int -> [a] -> Bundle m v a -{-# INLINE_FUSED fromListN #-} -fromListN n xs = fromStream (S.fromListN n xs) (Max (delay_inline max n 0)) - --- | Convert a list to a 'Bundle' with the given 'Size' hint. -unsafeFromList :: Monad m => Size -> [a] -> Bundle m v a -{-# INLINE_FUSED unsafeFromList #-} -unsafeFromList sz xs = fromStream (S.fromList xs) sz - -fromVector :: (Monad m, Vector v a) => v a -> Bundle m v a -{-# INLINE_FUSED fromVector #-} -fromVector v = v `seq` n `seq` Bundle (Stream step 0) - (Stream vstep True) - (Just v) - (Exact n) - where - n = basicLength v - - {-# INLINE step #-} - step i | i >= n = return Done - | otherwise = case basicUnsafeIndexM v i of - Box x -> return $ Yield x (i+1) - - - {-# INLINE vstep #-} - vstep True = return (Yield (Chunk (basicLength v) (\mv -> basicUnsafeCopy mv v)) False) - vstep False = return Done - -fromVectors :: forall m v a. (Monad m, Vector v a) => [v a] -> Bundle m v a -{-# INLINE_FUSED fromVectors #-} -fromVectors us = Bundle (Stream pstep (Left us)) - (Stream vstep us) - Nothing - (Exact n) - where - n = List.foldl' (\k v -> k + basicLength v) 0 us - - pstep (Left []) = return Done - pstep (Left (v:vs)) = basicLength v `seq` return (Skip (Right (v,0,vs))) - - pstep (Right (v,i,vs)) - | i >= basicLength v = return $ Skip (Left vs) - | otherwise = case basicUnsafeIndexM v i of - Box x -> return $ Yield x (Right (v,i+1,vs)) - - -- FIXME: work around bug in GHC 7.6.1 - vstep :: [v a] -> m (Step [v a] (Chunk v a)) - vstep [] = return Done - vstep (v:vs) = return $ Yield (Chunk (basicLength v) - (\mv -> INTERNAL_CHECK(check) "concatVectors" "length mismatch" - (M.basicLength mv == basicLength v) - $ basicUnsafeCopy mv v)) vs - - -concatVectors :: (Monad m, Vector v a) => Bundle m u (v a) -> Bundle m v a -{-# INLINE_FUSED concatVectors #-} -concatVectors Bundle{sElems = Stream step t} - = Bundle (Stream pstep (Left t)) - (Stream vstep t) - Nothing - Unknown - where - pstep (Left s) = do - r <- step s - case r of - Yield v s' -> basicLength v `seq` return (Skip (Right (v,0,s'))) - Skip s' -> return (Skip (Left s')) - Done -> return Done - - pstep (Right (v,i,s)) - | i >= basicLength v = return (Skip (Left s)) - | otherwise = case basicUnsafeIndexM v i of - Box x -> return (Yield x (Right (v,i+1,s))) - - - vstep s = do - r <- step s - case r of - Yield v s' -> return (Yield (Chunk (basicLength v) - (\mv -> INTERNAL_CHECK(check) "concatVectors" "length mismatch" - (M.basicLength mv == basicLength v) - $ basicUnsafeCopy mv v)) s') - Skip s' -> return (Skip s') - Done -> return Done - -reVector :: Monad m => Bundle m u a -> Bundle m v a -{-# INLINE_FUSED reVector #-} -reVector Bundle{sElems = s, sSize = n} = fromStream s n - -{-# RULES - -"reVector [Vector]" - reVector = id - -"reVector/reVector [Vector]" forall s. - reVector (reVector s) = s #-} - - - |