License	BSD-style
Maintainer	Vincent Hanquez <vincent@snarc.org>
Stability	experimental
Portability	portable
Safe Haskell	None
Language	Haskell2010

Foundation.Array.Internal

Contents

Mutable facilities

Description

Give access to Array non public functions which can be used to make certains optimisations.

Most of what is available here has no guarantees of stability. Anything can be removed and changed.

Synopsis

Documentation

data UArray ty :: * -> * #

An array of type built on top of GHC primitive.

The elements need to have fixed sized and the representation is a packed contiguous array in memory that can easily be passed to foreign interface

Constructors

UArray !(Offset ty) !(CountOf ty) !(UArrayBackend ty)

Instances

From String (UArray Word8)
Methods from :: String -> UArray Word8 #
From AsciiString (UArray Word8)
Methods from :: AsciiString -> UArray Word8 #
PrimType ty => IsList (UArray ty)
Associated Types type Item (UArray ty) :: * # Methods fromList :: [Item (UArray ty)] -> UArray ty # fromListN :: Int -> [Item (UArray ty)] -> UArray ty # toList :: UArray ty -> [Item (UArray ty)] #
(PrimType ty, Eq ty) => Eq (UArray ty)
Methods (==) :: UArray ty -> UArray ty -> Bool # (/=) :: UArray ty -> UArray ty -> Bool #
Data ty => Data (UArray ty)
Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> UArray ty -> c (UArray ty) # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c (UArray ty) # toConstr :: UArray ty -> Constr # dataTypeOf :: UArray ty -> DataType # dataCast1 :: Typeable (* -> ) t => (forall d. Data d => c (t d)) -> Maybe (c (UArray ty)) # dataCast2 :: Typeable ( -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c (UArray ty)) # gmapT :: (forall b. Data b => b -> b) -> UArray ty -> UArray ty # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> UArray ty -> r # gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> UArray ty -> r # gmapQ :: (forall d. Data d => d -> u) -> UArray ty -> [u] # gmapQi :: Int -> (forall d. Data d => d -> u) -> UArray ty -> u # gmapM :: Monad m => (forall d. Data d => d -> m d) -> UArray ty -> m (UArray ty) # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> UArray ty -> m (UArray ty) # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> UArray ty -> m (UArray ty) #
(PrimType ty, Ord ty) => Ord (UArray ty)
Methods compare :: UArray ty -> UArray ty -> Ordering # (<) :: UArray ty -> UArray ty -> Bool # (<=) :: UArray ty -> UArray ty -> Bool # (>) :: UArray ty -> UArray ty -> Bool # (>=) :: UArray ty -> UArray ty -> Bool # max :: UArray ty -> UArray ty -> UArray ty # min :: UArray ty -> UArray ty -> UArray ty #
(PrimType ty, Show ty) => Show (UArray ty)
Methods showsPrec :: Int -> UArray ty -> ShowS # show :: UArray ty -> String # showList :: [UArray ty] -> ShowS #
PrimType ty => Semigroup (UArray ty)
Methods (<>) :: UArray ty -> UArray ty -> UArray ty # sconcat :: NonEmpty (UArray ty) -> UArray ty # stimes :: Integral b => b -> UArray ty -> UArray ty #
PrimType ty => Monoid (UArray ty)
Methods mempty :: UArray ty # mappend :: UArray ty -> UArray ty -> UArray ty # mconcat :: [UArray ty] -> UArray ty #
NormalForm (UArray ty)
Methods toNormalForm :: UArray ty -> () #
PrimType ty => Copy (UArray ty) #
Methods copy :: UArray ty -> UArray ty #
PrimType ty => Collection (UArray ty) #
Methods null :: UArray ty -> Bool # length :: UArray ty -> CountOf (Element (UArray ty)) # elem :: (Eq a, (* ~ a) (Element (UArray ty))) => Element (UArray ty) -> UArray ty -> Bool # notElem :: (Eq a, (* ~ a) (Element (UArray ty))) => Element (UArray ty) -> UArray ty -> Bool # maximum :: (Ord a, (* ~ a) (Element (UArray ty))) => NonEmpty (UArray ty) -> Element (UArray ty) # minimum :: (Ord a, (* ~ a) (Element (UArray ty))) => NonEmpty (UArray ty) -> Element (UArray ty) # any :: (Element (UArray ty) -> Bool) -> UArray ty -> Bool # all :: (Element (UArray ty) -> Bool) -> UArray ty -> Bool #
PrimType ty => Buildable (UArray ty) #
Associated Types type Mutable (UArray ty) :: * -> * # type Step (UArray ty) :: * # Methods append :: PrimMonad prim => Element (UArray ty) -> Builder (UArray ty) (Mutable (UArray ty)) (Step (UArray ty)) prim err () # build :: PrimMonad prim => Int -> Builder (UArray ty) (Mutable (UArray ty)) (Step (UArray ty)) prim err () -> prim (Either err (UArray ty)) #
PrimType ty => Fold1able (UArray ty) #
Methods foldl1' :: (Element (UArray ty) -> Element (UArray ty) -> Element (UArray ty)) -> NonEmpty (UArray ty) -> Element (UArray ty) # foldr1 :: (Element (UArray ty) -> Element (UArray ty) -> Element (UArray ty)) -> NonEmpty (UArray ty) -> Element (UArray ty) #
PrimType ty => Foldable (UArray ty) #
Methods foldl' :: (a -> Element (UArray ty) -> a) -> a -> UArray ty -> a # foldr :: (Element (UArray ty) -> a -> a) -> a -> UArray ty -> a # foldr' :: (Element (UArray ty) -> a -> a) -> a -> UArray ty -> a #
PrimType ty => IndexedCollection (UArray ty) #
Methods (!) :: UArray ty -> Offset (Element (UArray ty)) -> Maybe (Element (UArray ty)) # findIndex :: (Element (UArray ty) -> Bool) -> UArray ty -> Maybe (Offset (Element (UArray ty))) #
PrimType ty => InnerFunctor (UArray ty) #
Methods imap :: (Element (UArray ty) -> Element (UArray ty)) -> UArray ty -> UArray ty #
PrimType ty => Sequential (UArray ty) #
Methods take :: CountOf (Element (UArray ty)) -> UArray ty -> UArray ty # revTake :: CountOf (Element (UArray ty)) -> UArray ty -> UArray ty # drop :: CountOf (Element (UArray ty)) -> UArray ty -> UArray ty # revDrop :: CountOf (Element (UArray ty)) -> UArray ty -> UArray ty # splitAt :: CountOf (Element (UArray ty)) -> UArray ty -> (UArray ty, UArray ty) # revSplitAt :: CountOf (Element (UArray ty)) -> UArray ty -> (UArray ty, UArray ty) # splitOn :: (Element (UArray ty) -> Bool) -> UArray ty -> [UArray ty] # break :: (Element (UArray ty) -> Bool) -> UArray ty -> (UArray ty, UArray ty) # breakEnd :: (Element (UArray ty) -> Bool) -> UArray ty -> (UArray ty, UArray ty) # breakElem :: Element (UArray ty) -> UArray ty -> (UArray ty, UArray ty) # takeWhile :: (Element (UArray ty) -> Bool) -> UArray ty -> UArray ty # dropWhile :: (Element (UArray ty) -> Bool) -> UArray ty -> UArray ty # intersperse :: Element (UArray ty) -> UArray ty -> UArray ty # intercalate :: Element (UArray ty) -> UArray ty -> Element (UArray ty) # span :: (Element (UArray ty) -> Bool) -> UArray ty -> (UArray ty, UArray ty) # spanEnd :: (Element (UArray ty) -> Bool) -> UArray ty -> (UArray ty, UArray ty) # filter :: (Element (UArray ty) -> Bool) -> UArray ty -> UArray ty # partition :: (Element (UArray ty) -> Bool) -> UArray ty -> (UArray ty, UArray ty) # reverse :: UArray ty -> UArray ty # uncons :: UArray ty -> Maybe (Element (UArray ty), UArray ty) # unsnoc :: UArray ty -> Maybe (UArray ty, Element (UArray ty)) # snoc :: UArray ty -> Element (UArray ty) -> UArray ty # cons :: Element (UArray ty) -> UArray ty -> UArray ty # find :: (Element (UArray ty) -> Bool) -> UArray ty -> Maybe (Element (UArray ty)) # sortBy :: (Element (UArray ty) -> Element (UArray ty) -> Ordering) -> UArray ty -> UArray ty # singleton :: Element (UArray ty) -> UArray ty # head :: NonEmpty (UArray ty) -> Element (UArray ty) # last :: NonEmpty (UArray ty) -> Element (UArray ty) # tail :: NonEmpty (UArray ty) -> UArray ty # init :: NonEmpty (UArray ty) -> UArray ty # replicate :: CountOf (Element (UArray ty)) -> Element (UArray ty) -> UArray ty # isPrefixOf :: UArray ty -> UArray ty -> Bool # isSuffixOf :: UArray ty -> UArray ty -> Bool # isInfixOf :: UArray ty -> UArray ty -> Bool # stripPrefix :: UArray ty -> UArray ty -> Maybe (UArray ty) # stripSuffix :: UArray ty -> UArray ty -> Maybe (UArray ty) #
PrimType ty => Zippable (UArray ty) #
Methods zipWith :: (Sequential a, Sequential b) => (Element a -> Element b -> Element (UArray ty)) -> a -> b -> UArray ty # zipWith3 :: (Sequential a, Sequential b, Sequential c) => (Element a -> Element b -> Element c -> Element (UArray ty)) -> a -> b -> c -> UArray ty # zipWith4 :: (Sequential a, Sequential b, Sequential c, Sequential d) => (Element a -> Element b -> Element c -> Element d -> Element (UArray ty)) -> a -> b -> c -> d -> UArray ty # zipWith5 :: (Sequential a, Sequential b, Sequential c, Sequential d, Sequential e) => (Element a -> Element b -> Element c -> Element d -> Element e -> Element (UArray ty)) -> a -> b -> c -> d -> e -> UArray ty # zipWith6 :: (Sequential a, Sequential b, Sequential c, Sequential d, Sequential e, Sequential f) => (Element a -> Element b -> Element c -> Element d -> Element e -> Element f -> Element (UArray ty)) -> a -> b -> c -> d -> e -> f -> UArray ty # zipWith7 :: (Sequential a, Sequential b, Sequential c, Sequential d, Sequential e, Sequential f, Sequential g) => (Element a -> Element b -> Element c -> Element d -> Element e -> Element f -> Element g -> Element (UArray ty)) -> a -> b -> c -> d -> e -> f -> g -> UArray ty #
PrimType a => Hashable (UArray a) #
Methods hashMix :: Hasher st => UArray a -> st -> st #
TryFrom (UArray Word8) String
Methods tryFrom :: UArray Word8 -> Maybe String #
PrimType ty => From (Array ty) (UArray ty)
Methods from :: Array ty -> UArray ty #
PrimType ty => From (UArray ty) (Block ty)
Methods from :: UArray ty -> Block ty #
PrimType ty => From (UArray ty) (Array ty)
Methods from :: UArray ty -> Array ty #
PrimType ty => From (Block ty) (UArray ty)
Methods from :: Block ty -> UArray ty #
(NatWithinBound (CountOf ty) n, KnownNat n, PrimType ty) => TryFrom (UArray ty) (BlockN n ty)
Methods tryFrom :: UArray ty -> Maybe (BlockN n ty) #
(NatWithinBound Int n, PrimType ty) => From (BlockN n ty) (UArray ty)
Methods from :: BlockN n ty -> UArray ty #
type Item (UArray ty)
type Item (UArray ty) = ty
type Element (UArray ty) #
type Element (UArray ty) = ty
type Mutable (UArray ty) #
type Mutable (UArray ty) = MUArray ty
type Step (UArray ty) #
type Step (UArray ty) = ty

fromForeignPtr :: PrimType ty => (ForeignPtr ty, Int, Int) -> UArray ty #

Create a foreign UArray from foreign memory and given offset/size

No check are performed to make sure this is valid, so this is unsafe.

This is particularly useful when dealing with foreign memory and ByteString

withPtr :: (PrimMonad prim, PrimType ty) => UArray ty -> (Ptr ty -> prim a) -> prim a #

Get a Ptr pointing to the data in the UArray.

Since a UArray is immutable, this Ptr shouldn't be to use to modify the contents

If the UArray is pinned, then its address is returned as is, however if it's unpinned, a pinned copy of the UArray is made before getting the address.

copyToPtr #

Arguments

:: (PrimType ty, PrimMonad prim)
=> UArray ty	the source array to copy
-> Ptr ty	The destination address where the copy is going to start
-> prim ()

Copy all the block content to the memory starting at the destination address

recast :: (PrimType a, PrimType b) => UArray a -> UArray b #

Recast an array of type a to an array of b

a and b need to have the same size otherwise this raise an async exception

toHexadecimal :: PrimType ty => UArray ty -> UArray Word8 #

Mutable facilities

new :: (PrimMonad prim, PrimType ty) => CountOf ty -> prim (MUArray ty (PrimState prim)) #

Create a new mutable array of size @n.

When memory for a new array is allocated, we decide if that memory region should be pinned (will not be copied around by GC) or unpinned (can be moved around by GC) depending on its size.

You can change the threshold value used by setting the environment variable HS_FOUNDATION_UARRAY_UNPINNED_MAX.

newPinned :: (PrimMonad prim, PrimType ty) => CountOf ty -> prim (MUArray ty (PrimState prim)) #

Create a new pinned mutable array of size @n.

all the cells are uninitialized and could contains invalid values.

All mutable arrays are allocated on a 64 bits aligned addresses

withMutablePtr :: (PrimMonad prim, PrimType ty) => MUArray ty (PrimState prim) -> (Ptr ty -> prim a) -> prim a #

Create a pointer on the beginning of the mutable array and call a function f.

The mutable buffer can be mutated by the f function and the change will be reflected in the mutable array

If the mutable array is unpinned, a trampoline buffer is created and the data is only copied when f return.