{-# LINE 1 "lib/CPython/Types/Bytes.chs" #-}
{-# LANGUAGE ForeignFunctionInterface #-}
module CPython.Types.Bytes
( Bytes
, bytesType
, toBytes
, fromBytes
, fromObject
, length
, append
) where
import qualified Foreign.C.Types as C2HSImp
import qualified Foreign.Ptr as C2HSImp
import qualified System.IO.Unsafe as C2HSImp
import Prelude hiding (length)
import qualified Data.ByteString as B
import qualified Data.ByteString.Unsafe as B
import CPython.Internal
newtype Bytes = Bytes (ForeignPtr Bytes)
instance Object Bytes where
toObject :: Bytes -> SomeObject
toObject (Bytes x :: ForeignPtr Bytes
x) = ForeignPtr Bytes -> SomeObject
forall a. Object a => ForeignPtr a -> SomeObject
SomeObject ForeignPtr Bytes
x
fromForeignPtr :: ForeignPtr Bytes -> Bytes
fromForeignPtr = ForeignPtr Bytes -> Bytes
Bytes
instance Concrete Bytes where
concreteType :: Bytes -> Type
concreteType _ = Type
bytesType
bytesType :: (Type)
bytesType =
C2HSImp.unsafePerformIO $
bytesType'_ >>= \res :: Ptr ()
res ->
Ptr () -> IO Type
forall obj a. Object obj => Ptr a -> IO obj
peekStaticObject Ptr ()
res IO Type -> (Type -> IO Type) -> IO Type
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \res' :: Type
res' ->
Type -> IO Type
forall (m :: * -> *) a. Monad m => a -> m a
return (Type
res')
{-# LINE 46 "lib/CPython/Types/Bytes.chs" #-}
toBytes :: B.ByteString -> IO Bytes
toBytes bytes = let
mkBytes = pyBytesFromStringAndSize
{-# LINE 50 "lib/CPython/Types/Bytes.chs" #-}
in B.unsafeUseAsCStringLen bytes $ \(cstr, len) ->
stealObject =<< mkBytes cstr (fromIntegral len)
fromBytes :: Bytes -> IO B.ByteString
fromBytes py =
alloca $ \bytesPtr ->
alloca $ \lenPtr ->
withObject py $ \pyPtr ->
do
pyBytesAsStringAndSize pyPtr bytesPtr lenPtr >>= checkStatusCode
bytes <- peek bytesPtr
len <- peek lenPtr
B.packCStringLen (bytes, fromIntegral len)
fromObject :: Object self => (self) -> IO ((Bytes))
fromObject :: self -> IO Bytes
fromObject a1 :: self
a1 =
self -> (Ptr () -> IO Bytes) -> IO Bytes
forall obj a b. Object obj => obj -> (Ptr a -> IO b) -> IO b
withObject self
a1 ((Ptr () -> IO Bytes) -> IO Bytes)
-> (Ptr () -> IO Bytes) -> IO Bytes
forall a b. (a -> b) -> a -> b
$ \a1' :: Ptr ()
a1' ->
Ptr () -> IO (Ptr ())
fromObject'_ Ptr ()
a1' IO (Ptr ()) -> (Ptr () -> IO Bytes) -> IO Bytes
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \res :: Ptr ()
res ->
Ptr () -> IO Bytes
forall obj a. Object obj => Ptr a -> IO obj
stealObject Ptr ()
res IO Bytes -> (Bytes -> IO Bytes) -> IO Bytes
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= \res' :: Bytes
res' ->
Bytes -> IO Bytes
forall (m :: * -> *) a. Monad m => a -> m a
return (Bytes
res')
{-# LINE 70 "lib/CPython/Types/Bytes.chs" #-}
length :: (Bytes) -> IO ((Integer))
length a1 =
withObject a1 $ \a1' ->
length'_ a1' >>= \res ->
checkIntReturn res >>= \res' ->
return (res')
{-# LINE 74 "lib/CPython/Types/Bytes.chs" #-}
append :: Bytes -> Bytes -> IO Bytes
append self next =
alloca $ \tempPtr ->
do
withObject self $ \selfPtr ->
do incref selfPtr
poke tempPtr selfPtr
withObject next $ \nextPtr ->
do
pyBytesConcat tempPtr nextPtr
newSelf <- peek tempPtr
stealObject newSelf
foreign import ccall unsafe "CPython/Types/Bytes.chs.h hscpython_PyBytes_Type"
bytesType'_ :: (IO (C2HSImp.Ptr ()))
foreign import ccall safe "CPython/Types/Bytes.chs.h PyBytes_FromStringAndSize"
pyBytesFromStringAndSize :: ((C2HSImp.Ptr C2HSImp.CChar) -> (C2HSImp.CLong -> (IO (C2HSImp.Ptr ()))))
foreign import ccall safe "CPython/Types/Bytes.chs.h PyBytes_AsStringAndSize"
pyBytesAsStringAndSize :: ((C2HSImp.Ptr ()) -> ((C2HSImp.Ptr (C2HSImp.Ptr C2HSImp.CChar)) -> ((C2HSImp.Ptr C2HSImp.CLong) -> (IO C2HSImp.CInt))))
foreign import ccall safe "CPython/Types/Bytes.chs.h PyBytes_FromObject"
fromObject'_ :: ((C2HSImp.Ptr ()) -> (IO (C2HSImp.Ptr ())))
foreign import ccall safe "CPython/Types/Bytes.chs.h PyBytes_Size"
length'_ :: ((C2HSImp.Ptr ()) -> (IO C2HSImp.CLong))
foreign import ccall safe "CPython/Types/Bytes.chs.h PyBytes_Concat"
pyBytesConcat :: ((C2HSImp.Ptr (C2HSImp.Ptr ())) -> ((C2HSImp.Ptr ()) -> (IO ())))