primitive-serial (empty) → 0.1

raw patch · 5 files changed

+224/−0 lines, 5 filesdep +basedep +bytestringdep +cpusetup-changed

Dependencies added: base, bytestring, cpu

Files

• LICENSE +10/−0
• Setup.hs +3/−0
• changelog.md +1/−0
• primitive-serial.cabal +39/−0
• src/Data/PrimitiveSerial.hs +171/−0

@@ -0,0 +1,10 @@+primitve-serial is Copyright (c) Ashley Yakeley, 2022.+All rights reserved.++Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:++- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.++- Neither name of the copyright holders nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.++THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

@@ -0,0 +1,3 @@+import Distribution.Simple++main = defaultMain

@@ -0,0 +1,1 @@+## [0.1] - ?

@@ -0,0 +1,39 @@+cabal-version: 2.2++-- This file has been generated from package.yaml by hpack version 0.35.0.+--+-- see: https://github.com/sol/hpack++name:           primitive-serial+version:        0.1+synopsis:       Serialisation of primitive types+description:    Representation of basic numeric types as ByteStrings+category:       Serialization+homepage:       https://github.com/AshleyYakeley/primitive-serial+bug-reports:    https://github.com/AshleyYakeley/primitive-serial/issues+author:         Ashley Yakeley+maintainer:     <ashley@semantic.org>+copyright:      (c) 2022 Ashley Yakeley+license:        BSD-2-Clause+license-file:   LICENSE+build-type:     Simple+extra-source-files:+    changelog.md++library+  exposed-modules:+      Data.PrimitiveSerial+  other-modules:+      Paths_primitive_serial+  autogen-modules:+      Paths_primitive_serial+  hs-source-dirs:+      src+  default-extensions:+      RecordWildCards+  ghc-options: -Wall -Wincomplete-uni-patterns -Wincomplete-record-updates -Wcompat -Wnoncanonical-monad-instances -Wno-partial-type-signatures+  build-depends:+      base >=4.16 && <5+    , bytestring+    , cpu+  default-language: GHC2021

@@ -0,0 +1,171 @@+module Data.PrimitiveSerial+    ( BSRead(..)+    , runWholeBSRead+    , bsRead+    , bsReadN+    , bsReadEverything+    , bsReadCount+    , decodeNative+    , encodeNative+    , FixedNumeric(..)+    , decodeLittleEndian+    , encodeLittleEndian+    , decodeBigEndian+    , encodeBigEndian+    ) where++import Control.Applicative+import Control.Monad+import Data.ByteString+import Data.ByteString.Internal+import Data.Int+import Data.Word+import Foreign+import Prelude hiding (drop, length, null, take)+import System.Endian+import System.IO.Unsafe++newtype BSRead a = MkBSRead+    { runBSRead :: StrictByteString -> Maybe (StrictByteString, a)+    }++instance Functor BSRead where+    fmap ab (MkBSRead f) = MkBSRead $ \bs -> fmap (fmap ab) $ f bs++instance Applicative BSRead where+    pure a = MkBSRead $ \bs -> Just (bs, a)+    MkBSRead fab <*> MkBSRead fa =+        MkBSRead $ \bs -> do+            (bs', ab) <- fab bs+            (bs'', a) <- fa bs'+            return (bs'', ab a)++instance Alternative BSRead where+    MkBSRead fa <|> MkBSRead fb = MkBSRead $ \bs -> fa bs <|> fb bs+    empty = MkBSRead $ \_ -> Nothing++instance Monad BSRead where+    MkBSRead f >>= q =+        MkBSRead $ \bs -> do+            (bs', a) <- f bs+            runBSRead (q a) bs'++instance MonadPlus BSRead++runWholeBSRead :: BSRead a -> StrictByteString -> Maybe a+runWholeBSRead ra bs = do+    (bs', a) <- runBSRead ra bs+    if null bs'+        then return a+        else Nothing++bsRead :: BSRead Word8+bsRead =+    MkBSRead $ \bs -> do+        w <- indexMaybe bs 0+        return (drop 1 bs, w)++bsReadN :: Int -> BSRead StrictByteString+bsReadN n =+    MkBSRead $ \bs -> do+        if n > length bs+            then Nothing+            else return (drop n bs, take n bs)++bsReadEverything :: BSRead StrictByteString+bsReadEverything = MkBSRead $ \bs -> Just (mempty, bs)++bsReadCount :: BSRead Int+bsReadCount = MkBSRead $ \bs -> Just (bs, length bs)++decodeNative ::+       forall a. Storable a+    => BSRead a+decodeNative = let+    typeSize :: Int+    typeSize = sizeOf (undefined :: a)+    in MkBSRead $ \bs@(BS fptr len) ->+           if typeSize <= len+               then Just $ (drop typeSize bs, unsafePerformIO $ withForeignPtr fptr $ \ptr -> peek $ castPtr ptr)+               else Nothing++encodeNative ::+       forall a. Storable a+    => a+    -> StrictByteString+encodeNative a = let+    typeSize :: Int+    typeSize = sizeOf (undefined :: a)+    in unsafePerformIO $ create typeSize $ \ptr -> poke (castPtr ptr) a++unsafeStorableCoerce ::+       forall a b. (Storable a, Storable b)+    => a+    -> b+unsafeStorableCoerce a = unsafePerformIO $ with a $ \ptr -> peek $ castPtr ptr++class Storable a => FixedNumeric a where+    nativeToLittleEndian :: a -> a+    nativeToBigEndian :: a -> a++instance FixedNumeric Word8 where+    nativeToLittleEndian = id+    nativeToBigEndian = id++instance FixedNumeric Word16 where+    nativeToLittleEndian = fromLE16+    nativeToBigEndian = fromBE16++instance FixedNumeric Word32 where+    nativeToLittleEndian = fromLE32+    nativeToBigEndian = fromBE32++instance FixedNumeric Word64 where+    nativeToLittleEndian = fromLE64+    nativeToBigEndian = fromBE64++instance FixedNumeric Int8 where+    nativeToLittleEndian = id+    nativeToBigEndian = id++instance FixedNumeric Int16 where+    nativeToLittleEndian = unsafeStorableCoerce . nativeToLittleEndian @Word16 . unsafeStorableCoerce+    nativeToBigEndian = unsafeStorableCoerce . nativeToBigEndian @Word16 . unsafeStorableCoerce++instance FixedNumeric Int32 where+    nativeToLittleEndian = unsafeStorableCoerce . nativeToLittleEndian @Word32 . unsafeStorableCoerce+    nativeToBigEndian = unsafeStorableCoerce . nativeToBigEndian @Word32 . unsafeStorableCoerce++instance FixedNumeric Int64 where+    nativeToLittleEndian = unsafeStorableCoerce . nativeToLittleEndian @Word64 . unsafeStorableCoerce+    nativeToBigEndian = unsafeStorableCoerce . nativeToBigEndian @Word64 . unsafeStorableCoerce++instance FixedNumeric Float where+    nativeToLittleEndian = unsafeStorableCoerce . nativeToLittleEndian @Word32 . unsafeStorableCoerce+    nativeToBigEndian = unsafeStorableCoerce . nativeToBigEndian @Word32 . unsafeStorableCoerce++instance FixedNumeric Double where+    nativeToLittleEndian = unsafeStorableCoerce . nativeToLittleEndian @Word64 . unsafeStorableCoerce+    nativeToBigEndian = unsafeStorableCoerce . nativeToBigEndian @Word64 . unsafeStorableCoerce++decodeLittleEndian ::+       forall a. FixedNumeric a+    => BSRead a+decodeLittleEndian = fmap nativeToLittleEndian $ decodeNative++encodeLittleEndian ::+       forall a. FixedNumeric a+    => a+    -> StrictByteString+encodeLittleEndian = encodeNative . nativeToLittleEndian++decodeBigEndian ::+       forall a. FixedNumeric a+    => BSRead a+decodeBigEndian = fmap nativeToBigEndian $ decodeNative++encodeBigEndian ::+       forall a. FixedNumeric a+    => a+    -> StrictByteString+encodeBigEndian = encodeNative . nativeToBigEndian