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Diffstat (limited to 'third_party/bazel/rules_haskell/examples/primitive/Data/Primitive/Addr.hs')
| -rw-r--r-- | third_party/bazel/rules_haskell/examples/primitive/Data/Primitive/Addr.hs | 133 |
1 files changed, 0 insertions, 133 deletions
diff --git a/third_party/bazel/rules_haskell/examples/primitive/Data/Primitive/Addr.hs b/third_party/bazel/rules_haskell/examples/primitive/Data/Primitive/Addr.hs deleted file mode 100644 index 2ff25005c6..0000000000 --- a/third_party/bazel/rules_haskell/examples/primitive/Data/Primitive/Addr.hs +++ /dev/null @@ -1,133 +0,0 @@ -{-# LANGUAGE MagicHash, UnboxedTuples, CPP #-} - --- | --- Module : Data.Primitive.Addr --- Copyright : (c) Roman Leshchinskiy 2009-2012 --- License : BSD-style --- --- Maintainer : Roman Leshchinskiy <rl@cse.unsw.edu.au> --- Portability : non-portable --- --- Primitive operations on machine addresses --- - -module Data.Primitive.Addr ( - -- * Types - Addr(..), - - -- * Address arithmetic - nullAddr, plusAddr, minusAddr, remAddr, - - -- * Element access - indexOffAddr, readOffAddr, writeOffAddr, - - -- * Block operations - copyAddr, -#if __GLASGOW_HASKELL__ >= 708 - copyAddrToByteArray, -#endif - moveAddr, setAddr, - - -- * Conversion - addrToInt -) where - -import Control.Monad.Primitive -import Data.Primitive.Types -#if __GLASGOW_HASKELL__ >= 708 -import Data.Primitive.ByteArray -#endif - -import GHC.Base ( Int(..) ) -import GHC.Prim - -import GHC.Ptr -import Foreign.Marshal.Utils - - --- | The null address -nullAddr :: Addr -nullAddr = Addr nullAddr# - -infixl 6 `plusAddr`, `minusAddr` -infixl 7 `remAddr` - --- | Offset an address by the given number of bytes -plusAddr :: Addr -> Int -> Addr -plusAddr (Addr a#) (I# i#) = Addr (plusAddr# a# i#) - --- | Distance in bytes between two addresses. The result is only valid if the --- difference fits in an 'Int'. -minusAddr :: Addr -> Addr -> Int -minusAddr (Addr a#) (Addr b#) = I# (minusAddr# a# b#) - --- | The remainder of the address and the integer. -remAddr :: Addr -> Int -> Int -remAddr (Addr a#) (I# i#) = I# (remAddr# a# i#) - --- | Read a value from a memory position given by an address and an offset. --- The memory block the address refers to must be immutable. The offset is in --- elements of type @a@ rather than in bytes. -indexOffAddr :: Prim a => Addr -> Int -> a -{-# INLINE indexOffAddr #-} -indexOffAddr (Addr addr#) (I# i#) = indexOffAddr# addr# i# - --- | Read a value from a memory position given by an address and an offset. --- The offset is in elements of type @a@ rather than in bytes. -readOffAddr :: (Prim a, PrimMonad m) => Addr -> Int -> m a -{-# INLINE readOffAddr #-} -readOffAddr (Addr addr#) (I# i#) = primitive (readOffAddr# addr# i#) - --- | Write a value to a memory position given by an address and an offset. --- The offset is in elements of type @a@ rather than in bytes. -writeOffAddr :: (Prim a, PrimMonad m) => Addr -> Int -> a -> m () -{-# INLINE writeOffAddr #-} -writeOffAddr (Addr addr#) (I# i#) x = primitive_ (writeOffAddr# addr# i# x) - --- | Copy the given number of bytes from the second 'Addr' to the first. The --- areas may not overlap. -copyAddr :: PrimMonad m => Addr -- ^ destination address - -> Addr -- ^ source address - -> Int -- ^ number of bytes - -> m () -{-# INLINE copyAddr #-} -copyAddr (Addr dst#) (Addr src#) n - = unsafePrimToPrim $ copyBytes (Ptr dst#) (Ptr src#) n - -#if __GLASGOW_HASKELL__ >= 708 --- | Copy the given number of bytes from the 'Addr' to the 'MutableByteArray'. --- The areas may not overlap. This function is only available when compiling --- with GHC 7.8 or newer. --- --- @since 0.6.4.0 -copyAddrToByteArray :: PrimMonad m - => MutableByteArray (PrimState m) -- ^ destination - -> Int -- ^ offset into the destination array - -> Addr -- ^ source - -> Int -- ^ number of bytes to copy - -> m () -{-# INLINE copyAddrToByteArray #-} -copyAddrToByteArray (MutableByteArray marr) (I# off) (Addr addr) (I# len) = - primitive_ $ copyAddrToByteArray# addr marr off len -#endif - --- | Copy the given number of bytes from the second 'Addr' to the first. The --- areas may overlap. -moveAddr :: PrimMonad m => Addr -- ^ destination address - -> Addr -- ^ source address - -> Int -- ^ number of bytes - -> m () -{-# INLINE moveAddr #-} -moveAddr (Addr dst#) (Addr src#) n - = unsafePrimToPrim $ moveBytes (Ptr dst#) (Ptr src#) n - --- | Fill a memory block of with the given value. The length is in --- elements of type @a@ rather than in bytes. -setAddr :: (Prim a, PrimMonad m) => Addr -> Int -> a -> m () -{-# INLINE setAddr #-} -setAddr (Addr addr#) (I# n#) x = primitive_ (setOffAddr# addr# 0# n# x) - --- | Convert an 'Addr' to an 'Int'. -addrToInt :: Addr -> Int -{-# INLINE addrToInt #-} -addrToInt (Addr addr#) = I# (addr2Int# addr#) |