{-# LANGUAGE DataKinds                  #-}
{-# LANGUAGE DeriveDataTypeable         #-}
{-# LANGUAGE DeriveTraversable          #-}
{-# LANGUAGE FlexibleInstances          #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE KindSignatures             #-}
{-# OPTIONS_HADDOCK not-home            #-}

module Data.Vector.Generic.Sized.Internal
  ( Vector(..)
  )
where

import           Control.DeepSeq                ( NFData )
import           Data.Data                      ( Data
                                                , Typeable
                                                )
import           Data.Functor.Classes           ( Eq1
                                                , Ord1
                                                , Show1
                                                )
import           Data.Vector                   as V
                                                ( and
                                                , foldl'
                                                , null
                                                , zipWith
                                                , zipWith3
                                                )
import qualified Data.Vector.Generic           as VG
                                                ( Vector
                                                , convert
                                                , empty
                                                , fromList
                                                , toList
                                                )
import           GHC.Arr                        ( Ix
                                                  ( inRange
                                                  , range
                                                  , unsafeIndex
                                                  , unsafeRangeSize
                                                  )
                                                )
import           GHC.TypeLits                   ( Nat )

-- | A wrapper to tag vectors with a type level length.
--
-- Be careful when using the constructor here to not construct sized vectors
-- which have a different length than that specified in the type parameter!
newtype Vector v (n :: Nat) a = Vector (v a)
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forall u. Int -> (forall d. Data d => d -> u) -> Vector v n a -> u
forall u. (forall d. Data d => d -> u) -> Vector v n a -> [u]
forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
forall (m :: * -> *).
Monad m =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
forall (m :: * -> *).
MonadPlus m =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
forall (c :: * -> *).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Vector v n a)
forall (c :: * -> *).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Vector v n a -> c (Vector v n a)
forall {v :: * -> *} {n :: Nat} {a}.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Typeable (Vector v n a)
forall (v :: * -> *) (n :: Nat) a.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Vector v n a -> Constr
forall (v :: * -> *) (n :: Nat) a.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Vector v n a -> DataType
forall (v :: * -> *) (n :: Nat) a.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall b. Data b => b -> b) -> Vector v n a -> Vector v n a
forall (v :: * -> *) (n :: Nat) a u.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Int -> (forall d. Data d => d -> u) -> Vector v n a -> u
forall (v :: * -> *) (n :: Nat) a u.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall d. Data d => d -> u) -> Vector v n a -> [u]
forall (v :: * -> *) (n :: Nat) a r r'.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
forall (v :: * -> *) (n :: Nat) a r r'.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
forall (v :: * -> *) (n :: Nat) a (m :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), Monad m) =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
forall (v :: * -> *) (n :: Nat) a (m :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), MonadPlus m) =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
forall (v :: * -> *) (n :: Nat) a (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Vector v n a)
forall (v :: * -> *) (n :: Nat) a (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Vector v n a -> c (Vector v n a)
forall (v :: * -> *) (n :: Nat) a (t :: * -> *) (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), Typeable t) =>
(forall d. Data d => c (t d)) -> Maybe (c (Vector v n a))
forall (v :: * -> *) (n :: Nat) a (t :: * -> * -> *) (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), Typeable t) =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Vector v n a))
forall (t :: * -> *) (c :: * -> *).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c (Vector v n a))
forall (t :: * -> * -> *) (c :: * -> *).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Vector v n a))
$cgfoldl :: forall (v :: * -> *) (n :: Nat) a (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Vector v n a -> c (Vector v n a)
gfoldl :: forall (c :: * -> *).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Vector v n a -> c (Vector v n a)
$cgunfold :: forall (v :: * -> *) (n :: Nat) a (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Vector v n a)
gunfold :: forall (c :: * -> *).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Vector v n a)
$ctoConstr :: forall (v :: * -> *) (n :: Nat) a.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Vector v n a -> Constr
toConstr :: Vector v n a -> Constr
$cdataTypeOf :: forall (v :: * -> *) (n :: Nat) a.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Vector v n a -> DataType
dataTypeOf :: Vector v n a -> DataType
$cdataCast1 :: forall (v :: * -> *) (n :: Nat) a (t :: * -> *) (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), Typeable t) =>
(forall d. Data d => c (t d)) -> Maybe (c (Vector v n a))
dataCast1 :: forall (t :: * -> *) (c :: * -> *).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c (Vector v n a))
$cdataCast2 :: forall (v :: * -> *) (n :: Nat) a (t :: * -> * -> *) (c :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), Typeable t) =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Vector v n a))
dataCast2 :: forall (t :: * -> * -> *) (c :: * -> *).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Vector v n a))
$cgmapT :: forall (v :: * -> *) (n :: Nat) a.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall b. Data b => b -> b) -> Vector v n a -> Vector v n a
gmapT :: (forall b. Data b => b -> b) -> Vector v n a -> Vector v n a
$cgmapQl :: forall (v :: * -> *) (n :: Nat) a r r'.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
gmapQl :: forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
$cgmapQr :: forall (v :: * -> *) (n :: Nat) a r r'.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
gmapQr :: forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Vector v n a -> r
$cgmapQ :: forall (v :: * -> *) (n :: Nat) a u.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
(forall d. Data d => d -> u) -> Vector v n a -> [u]
gmapQ :: forall u. (forall d. Data d => d -> u) -> Vector v n a -> [u]
$cgmapQi :: forall (v :: * -> *) (n :: Nat) a u.
(KnownNat n, Typeable v, Typeable a, Data (v a)) =>
Int -> (forall d. Data d => d -> u) -> Vector v n a -> u
gmapQi :: forall u. Int -> (forall d. Data d => d -> u) -> Vector v n a -> u
$cgmapM :: forall (v :: * -> *) (n :: Nat) a (m :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), Monad m) =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
gmapM :: forall (m :: * -> *).
Monad m =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
$cgmapMp :: forall (v :: * -> *) (n :: Nat) a (m :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), MonadPlus m) =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
gmapMp :: forall (m :: * -> *).
MonadPlus m =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
$cgmapMo :: forall (v :: * -> *) (n :: Nat) a (m :: * -> *).
(KnownNat n, Typeable v, Typeable a, Data (v a), MonadPlus m) =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
gmapMo :: forall (m :: * -> *).
MonadPlus m =>
(forall d. Data d => d -> m d) -> Vector v n a -> m (Vector v n a)
Data, Typeable
           )

instance (Ix a, Ord (v a), VG.Vector v a) => Ix (Vector v n a) where

  -- range is consistent with range :: ((a,..,a), (a,..,a)) -> [(a,..,a)]
  range :: (Vector v n a, Vector v n a) -> [Vector v n a]
range (Vector v a
l, Vector v a
u) = v a -> Vector v n a
forall (v :: * -> *) (n :: Nat) a. v a -> Vector v n a
Vector (v a -> Vector v n a) -> [v a] -> [Vector v n a]
forall (f :: * -> *) a b. Functor f => (a -> b) -> f a -> f b
<$> Vector [a] -> [v a]
forall {v :: * -> *} {a}. Vector v a => Vector [a] -> [v a]
enumerate Vector [a]
ranges
   where
    ranges :: Vector [a]
ranges = (a -> a -> [a]) -> Vector a -> Vector a -> Vector [a]
forall a b c. (a -> b -> c) -> Vector a -> Vector b -> Vector c
V.zipWith (((a, a) -> [a]) -> a -> a -> [a]
forall a b c. ((a, b) -> c) -> a -> b -> c
curry (a, a) -> [a]
forall a. Ix a => (a, a) -> [a]
range) Vector a
lc Vector a
uc
    lc :: Vector a
lc     = v a -> Vector a
forall (v :: * -> *) a (w :: * -> *).
(Vector v a, Vector w a) =>
v a -> w a
VG.convert v a
l
    uc :: Vector a
uc     = v a -> Vector a
forall (v :: * -> *) a (w :: * -> *).
(Vector v a, Vector w a) =>
v a -> w a
VG.convert v a
u
    enumerate :: Vector [a] -> [v a]
enumerate Vector [a]
v | Vector [a] -> Bool
forall a. Vector a -> Bool
V.null Vector [a]
v  = [v a
forall (v :: * -> *) a. Vector v a => v a
VG.empty]
                | Bool
otherwise = ([a] -> v a) -> [[a]] -> [v a]
forall a b. (a -> b) -> [a] -> [b]
map [a] -> v a
forall (v :: * -> *) a. Vector v a => [a] -> v a
VG.fromList ([[a]] -> [v a]) -> [[a]] -> [v a]
forall a b. (a -> b) -> a -> b
$ [[a]] -> [[a]]
forall {a}. [[a]] -> [[a]]
enumerate' (Vector [a] -> [[a]]
forall (v :: * -> *) a. Vector v a => v a -> [a]
VG.toList Vector [a]
v)
    enumerate' :: [[a]] -> [[a]]
enumerate' []         = [[]]
    enumerate' ([a]
xs : [[a]]
xss) = [ a
x a -> [a] -> [a]
forall a. a -> [a] -> [a]
: [a]
xs' | a
x <- [a]
xs, [a]
xs' <- [[a]] -> [[a]]
enumerate' [[a]]
xss ]

-- index/unsafeIndex is consistent with
-- index :: ((a,..,a), (a,..,a)) -> (a,..,a) -> Int
  unsafeIndex :: (Vector v n a, Vector v n a) -> Vector v n a -> Int
unsafeIndex (Vector v a
l, Vector v a
u) (Vector v a
i) = (Int -> (Int, Int) -> Int) -> Int -> Vector (Int, Int) -> Int
forall a b. (a -> b -> a) -> a -> Vector b -> a
V.foldl' Int -> (Int, Int) -> Int
forall {a}. Num a => a -> (a, a) -> a
f Int
0 Vector (Int, Int)
v
   where
    f :: a -> (a, a) -> a
f a
acc (a
index', a
rangeSize') = a
acc a -> a -> a
forall a. Num a => a -> a -> a
* a
rangeSize' a -> a -> a
forall a. Num a => a -> a -> a
+ a
index'
    v :: Vector (Int, Int)
v            = (a -> a -> a -> (Int, Int))
-> Vector a -> Vector a -> Vector a -> Vector (Int, Int)
forall a b c d.
(a -> b -> c -> d) -> Vector a -> Vector b -> Vector c -> Vector d
V.zipWith3 a -> a -> a -> (Int, Int)
forall {a}. Ix a => a -> a -> a -> (Int, Int)
indexAndRangeSize Vector a
lc Vector a
uc Vector a
ic
    (Vector a
lc, Vector a
uc, Vector a
ic) = v a -> v a -> v a -> (Vector a, Vector a, Vector a)
forall (v1 :: * -> *) a (w1 :: * -> *) (v2 :: * -> *) b
       (w2 :: * -> *) (v3 :: * -> *) c (w3 :: * -> *).
(Vector v1 a, Vector w1 a, Vector v2 b, Vector w2 b, Vector v3 c,
 Vector w3 c) =>
v1 a -> v2 b -> v3 c -> (w1 a, w2 b, w3 c)
convert3 v a
l v a
u v a
i
    indexAndRangeSize :: a -> a -> a -> (Int, Int)
indexAndRangeSize a
l' a
u' a
i' =
      let b' :: (a, a)
b' = (a
l', a
u') in ((a, a) -> a -> Int
forall a. Ix a => (a, a) -> a -> Int
unsafeIndex (a, a)
b' a
i', (a, a) -> Int
forall a. Ix a => (a, a) -> Int
unsafeRangeSize (a, a)
b')

-- i is in range (l, u) if, and only if, that is true for all elements,
-- element-by-element
  inRange :: (Vector v n a, Vector v n a) -> Vector v n a -> Bool
inRange (Vector v a
l, Vector v a
u) (Vector v a
i) = Vector Bool -> Bool
V.and
    (Vector Bool -> Bool) -> Vector Bool -> Bool
forall a b. (a -> b) -> a -> b
$ (a -> a -> a -> Bool)
-> Vector a -> Vector a -> Vector a -> Vector Bool
forall a b c d.
(a -> b -> c -> d) -> Vector a -> Vector b -> Vector c -> Vector d
V.zipWith3 (((a, a) -> a -> Bool) -> a -> a -> a -> Bool
forall a b c. ((a, b) -> c) -> a -> b -> c
curry (a, a) -> a -> Bool
forall a. Ix a => (a, a) -> a -> Bool
inRange) Vector a
lc Vector a
uc Vector a
ic
    where (Vector a
lc, Vector a
uc, Vector a
ic) = v a -> v a -> v a -> (Vector a, Vector a, Vector a)
forall (v1 :: * -> *) a (w1 :: * -> *) (v2 :: * -> *) b
       (w2 :: * -> *) (v3 :: * -> *) c (w3 :: * -> *).
(Vector v1 a, Vector w1 a, Vector v2 b, Vector w2 b, Vector v3 c,
 Vector w3 c) =>
v1 a -> v2 b -> v3 c -> (w1 a, w2 b, w3 c)
convert3 v a
l v a
u v a
i

-- Conversion helper
{-# INLINE convert3 #-}
convert3
  :: ( VG.Vector v1 a
     , VG.Vector w1 a
     , VG.Vector v2 b
     , VG.Vector w2 b
     , VG.Vector v3 c
     , VG.Vector w3 c
     )
  => v1 a
  -> v2 b
  -> v3 c
  -> (w1 a, w2 b, w3 c)
convert3 :: forall (v1 :: * -> *) a (w1 :: * -> *) (v2 :: * -> *) b
       (w2 :: * -> *) (v3 :: * -> *) c (w3 :: * -> *).
(Vector v1 a, Vector w1 a, Vector v2 b, Vector w2 b, Vector v3 c,
 Vector w3 c) =>
v1 a -> v2 b -> v3 c -> (w1 a, w2 b, w3 c)
convert3 v1 a
v1 v2 b
v2 v3 c
v3 = (v1 a -> w1 a
forall (v :: * -> *) a (w :: * -> *).
(Vector v a, Vector w a) =>
v a -> w a
VG.convert v1 a
v1, v2 b -> w2 b
forall (v :: * -> *) a (w :: * -> *).
(Vector v a, Vector w a) =>
v a -> w a
VG.convert v2 b
v2, v3 c -> w3 c
forall (v :: * -> *) a (w :: * -> *).
(Vector v a, Vector w a) =>
v a -> w a
VG.convert v3 c
v3)