#if defined(__GLASGOW_HASKELL__) && !defined(__HADDOCK__)
#include "MachDeps.h"
#endif
module Data.Tickle.Get(
Get
, getLazyByteString
, getLazyByteStringNul
, getRemainingLazyByteString
, getPtr
, getWord8
, getWord16be
, getWord16le
, getWord32be
, getWord32le
, getWord64be
, getWord64le
, getWordhost
, getWord16host
, getWord32host
, getWord64host
, failGet
, constant
, bytesRead
, demandInput
, skip
, isNotEmpty
, isEmpty
, getByteString
, modify
, readN
, ensureN
, runAndKeepTrack
, pushBack
, pushFront
, xrunGetIncremental
, noMeansNo
, prompt
, isolate
, lookAhead
, lookAheadM
, lookAheadE
, readNWith
, calculateOffset
, pushChunk
, pushChunks
, pushEndOfInput
, (!+)
, addLabel
, (!-)
, setLabel
, (!!-)
, modifyLabel
, Decoder
, decoder
, _Fail
, _Partial
, _Done
, runGet
, runGetIncremental
, XDecoder
, xdecoder
, _XFail
, _XPartial
, _XDone
, _XBytesRead
, CompletedXDecoder
, completedXDecoder
, _CompletedFail
, _CompletedDone
, completedIso
, completedByteString
, completedValue
, uncomplete
, uncompletedByteString
, uncompletedValue
) where
import Control.Applicative(Applicative((<*>), pure), (<$>))
import Control.Category(Category((.), id))
import Control.Lens.Iso(iso)
import Control.Lens.Lens(lens)
import Control.Lens.Prism(prism')
import Control.Lens.Review((#))
import Control.Lens.Type(Iso, Prism', Lens', Traversal')
import Control.Monad(Monad((>>=), (>>), return), ap)
import Data.Bifoldable(Bifoldable(bifoldMap))
import Data.Bifunctor(Bifunctor(bimap))
import Data.Bitraversable(Bitraversable(bitraverse))
import Data.Bits((.|.))
import Data.Bool(Bool(False, True), (&&), not)
import qualified Data.ByteString as B(ByteString, concat, append, length, splitAt, empty, null, break, drop)
import qualified Data.ByteString.Internal as BI
import qualified Data.ByteString.Lazy as L(ByteString, toChunks, fromChunks)
import qualified Data.ByteString.Lazy.Internal as LI(ByteString(Chunk, Empty))
import qualified Data.ByteString.Unsafe as BU(unsafeDrop, unsafeTake, unsafeHead, unsafeIndex, unsafeUseAsCString)
import Data.Either(Either(Left, Right), either)
import Data.Eq(Eq((==)))
import Data.Foldable(Foldable(foldMap))
import Data.Function(const)
import Data.Functor(Functor(fmap))
import Data.Functor.Apply(Apply((<.>)))
import Data.Functor.Alt(Alt((<!>)))
import qualified Data.Functor.Alt as Al(Alt(some, many))
import Data.Functor.Bind(Bind((>>-)))
import Data.Int(Int, Int64)
import Data.List(reverse)
import Data.Maybe(Maybe(Nothing, Just), maybe, isJust)
import Data.Monoid(Monoid(mempty))
import Data.Ord(Ord((>), (>=), (<), (>=)))
import Data.Semigroup(Semigroup((<>)))
import Data.Tickle.IsolateError(IsolateError, _NegativeSize, _IsolateXFail, _UnexpectedConsumed)
import Data.Tickle.RunGetResult(RunGetResult, _RunGet, _RunGetFail)
import Data.Traversable(Traversable(traverse))
import Data.Tuple(uncurry)
import Foreign(Ptr, castPtr, Storable(peek), sizeOf)
#if defined(__GLASGOW_HASKELL__) && !defined(__HADDOCK__)
import GHC.Word(Word, Word8, Word16(W16#), Word32(W32#), Word64(W64#))
import GHC.Base(uncheckedShiftL#, Int(I#))
#endif
import Prelude(Num((), (+)), ($!), Show, fromIntegral, undefined)
import System.IO(IO)
newtype Get e a =
Get (forall r.
B.ByteString ->
(B.ByteString -> a -> XDecoder e r) ->
XDecoder e r)
bimapG ::
(e -> f)
-> (a -> b)
-> Get e a
-> Get f b
bimapG f g (Get z) =
Get (\b q ->
let r = z b XDone
go (XDone i a) = q i (g a)
go (XPartial k) = XPartial (go . k)
go (XFail i s) = XFail i (f s)
go (XBytesRead u k) = XBytesRead u (go . k)
in go r)
instance Bifunctor Get where
bimap =
bimapG
fmapG ::
(a -> b)
-> Get e a
-> Get e b
fmapG =
bimapG id
instance Functor (Get e) where
fmap =
fmapG
instance Apply (Get e) where
(<.>) =
ap
apG ::
Get e (a -> b)
-> Get e a
-> Get e b
apG d e =
do b <- d
a <- e
return (b a)
instance Applicative (Get e) where
pure =
return
(<*>) =
apG
instance Bind (Get e) where
(>>-) =
(>>=)
returnG ::
a
-> Get e a
returnG a =
Get (\b q -> q b a)
bindG ::
Get e a
-> (a -> Get e b)
-> Get e b
Get k `bindG` f =
Get (\b q -> k b (\c a ->
let Get l = f a
in l c q))
instance Monad (Get e) where
return =
returnG
(>>=) =
bindG
instance Alt (Get e) where
f <!> g =
do (d, bs) <- runAndKeepTrack f
case d of
CompletedDone b a -> Get (\_ q -> q b a)
CompletedFail _ _ -> pushBack bs >> g
some p =
(:) <$> p <*> Al.many p
many p =
(p >>= \x ->
fmap (x:) (Al.many p)) <!> pure []
instance Semigroup (Get e a) where
(<>) =
(<!>)
failGet ::
e
-> Get e a
failGet e =
Get (\i _ -> XFail i e)
constant ::
(forall r. XDecoder e r)
-> Get e a
constant d =
Get (\_ _ -> d)
runAndKeepTrack ::
Get e a
-> Get x (CompletedXDecoder e a, [B.ByteString])
runAndKeepTrack (Get k) =
Get (\b q ->
let go !acc w = case w of
XDone c a -> q b (CompletedDone c a, reverse acc)
XPartial l -> XPartial (\c -> go (maybe acc (:acc) c) (l c))
XFail c e -> q b (CompletedFail c e, reverse acc)
XBytesRead i l -> XBytesRead i (go acc . l)
in go [] (k b XDone))
pushBack ::
[B.ByteString]
-> Get e ()
pushBack z =
let y [] = id
y _ = B.concat . (:z)
in Get (\b q -> q (y z b) ())
pushFront ::
B.ByteString
-> Get e ()
pushFront b =
Get (\c q -> q (B.append b c) ())
xrunGetIncremental ::
Get e a
-> XDecoder e a
xrunGetIncremental (Get k) =
noMeansNo (k B.empty XDone)
noMeansNo ::
XDecoder e a
-> XDecoder e a
noMeansNo =
let neverAgain (XPartial k) =
neverAgain (k Nothing)
neverAgain (XBytesRead i k) =
XBytesRead i (neverAgain . k)
neverAgain r@(XDone _ _) =
r
neverAgain r@(XFail _ _) =
r
go (XPartial k) =
XPartial (\b ->
(if isJust b then go else neverAgain) (k b))
go (XBytesRead i k) =
XBytesRead i (go . k)
go r@(XDone _ _) =
r
go r@(XFail _ _) =
r
in go
prompt ::
B.ByteString
-> XDecoder e a
-> (B.ByteString -> XDecoder e a)
-> XDecoder e a
prompt b d f =
let loop = XPartial (maybe d (\s -> if B.null s then loop else f (b `B.append` s)))
in loop
bytesRead ::
Get e Int64
bytesRead =
Get (\b q -> XBytesRead (fromIntegral (B.length b)) (q b))
isolate ::
Int
-> Get e a
-> Get (IsolateError e) a
isolate m (Get k) =
let go !n (XDone l x) =
if n == 0 && B.null l
then
return x
else
do pushFront l
failGet (_UnexpectedConsumed # (m n B.length l, m))
go 0 (XPartial r) =
go 0 (r Nothing)
go n (XPartial r) =
do i <- Get (\b q -> let takeLimited t =
let (j, o) = B.splitAt n t
in q o (Just j)
in if B.null b
then
prompt b (q B.empty Nothing) takeLimited
else
takeLimited b)
case i of
Nothing ->
go n (r Nothing)
Just u ->
go (n B.length u) (r (Just u))
go _ (XFail b e) =
pushFront b >> failGet (_IsolateXFail # e)
go n (XBytesRead i r) =
go n (r $! fromIntegral m fromIntegral n i)
in if m < 0
then
failGet (_NegativeSize # ())
else
go m (k B.empty XDone)
demandInput ::
Get () ()
demandInput =
Get (\b q ->
prompt b (XFail b ()) (`q` ()))
skip ::
Int
-> Get () ()
skip n =
readN n (return ())
isNotEmpty ::
Get e Bool
isNotEmpty =
fmap not isEmpty
isEmpty ::
Get e Bool
isEmpty =
Get (\b q ->
if B.null b
then
prompt b (q b True) (`q` False)
else
q b False)
lookAhead ::
Get e a
-> Get e a
lookAhead g =
do (d, bs) <- runAndKeepTrack g
case d of
CompletedDone _ a ->
pushBack bs >> return a
CompletedFail inp s ->
constant (XFail inp s)
lookAheadM ::
Get e (Maybe a)
-> Get e (Maybe a)
lookAheadM g =
let g' = fmap (maybe (Left ()) Right) g
in fmap (either (return Nothing) Just) (lookAheadE g')
lookAheadE ::
Get e (Either a b)
-> Get e (Either a b)
lookAheadE g =
do (d, b) <- runAndKeepTrack g
case d of
CompletedDone _ (Left x) ->
pushBack b >> return (Left x)
CompletedDone i (Right x) ->
Get (\_ q -> q i (Right x))
CompletedFail i s ->
constant (XFail i s)
(!+) ::
Semigroup e =>
e
-> Get e a
-> Get e a
(!+) =
addLabel
infixl 3 !+
addLabel ::
Semigroup e =>
e
-> Get e a
-> Get e a
addLabel m =
modifyLabel (<> m)
(!-) ::
e
-> Get d a
-> Get e a
(!-) =
setLabel
infixl 3 !-
setLabel ::
e
-> Get d a
-> Get e a
setLabel =
modifyLabel . return
(!!-) ::
(d -> e)
-> Get d a
-> Get e a
(!!-) =
modifyLabel
infixl 3 !!-
modifyLabel ::
(d -> e)
-> Get d a
-> Get e a
modifyLabel m =
bimap m id
getByteString ::
Int
-> Get () B.ByteString
getByteString n =
if n > 0
then
readN n (BU.unsafeTake n)
else
return B.empty
modify ::
(B.ByteString -> B.ByteString)
-> Get e ()
modify f =
Get (\b q -> q (f b) ())
get ::
Get e B.ByteString
get =
Get (\b q -> q b b)
put ::
B.ByteString -> Get e ()
put s =
Get (\_ q -> q s ())
readN ::
Int
-> (B.ByteString -> a)
-> Get () a
readN !n f =
ensureN n >> unsafeReadN n f
ensureN ::
Int
-> Get () ()
ensureN !m =
Get (\i k ->
let go n =
Get (\b q -> if B.length b >= n
then
q b ()
else
let Get g = demandInput >> go n
in g b q)
in if B.length i >= m
then
k i ()
else
let Get g = go m
in g i k)
unsafeReadN ::
Int
-> (B.ByteString -> a)
-> Get e a
unsafeReadN !n f =
Get (\b ks -> ks (BU.unsafeDrop n b) $! f b)
readNWith ::
Int
-> (Ptr a -> IO a)
-> Get () a
readNWith n f =
readN n (\s -> BI.inlinePerformIO (BU.unsafeUseAsCString s (f . castPtr)))
data Decoder e a =
Fail !B.ByteString !Int64 e
| Partial (Maybe B.ByteString -> Decoder e a)
| Done !B.ByteString !Int64 a
decoder ::
(B.ByteString -> Int64 -> e -> x)
-> ((Maybe B.ByteString -> Decoder e a) -> x)
-> (B.ByteString -> Int64 -> a -> x)
-> Decoder e a
-> x
decoder f _ _ (Fail b i e) =
f b i e
decoder _ p _ (Partial k) =
p k
decoder _ _ d (Done b i a) =
d b i a
_Fail ::
Prism' (Decoder e a) (B.ByteString, Int64, e)
_Fail =
prism'
(\(b, i, e) -> Fail b i e)
(\x -> case x of
Fail b i e -> Just (b, i, e)
_ -> Nothing)
_Partial ::
Prism' (Decoder e a) (Maybe B.ByteString -> Decoder e a)
_Partial =
prism'
Partial
(\x -> case x of
Partial k -> Just k
_ -> Nothing)
_Done ::
Prism' (Decoder e a) (B.ByteString, Int64, a)
_Done =
prism'
(\(b, i, a) -> Done b i a)
(\x -> case x of
Done b i a -> Just (b, i, a)
_ -> Nothing)
bimapD ::
(e -> f)
-> (a -> b)
-> Decoder e a
-> Decoder f b
bimapD f _ (Fail b i e) =
Fail b i (f e)
bimapD f g (Partial k) =
Partial (bimapD f g . k)
bimapD _ g (Done b i a) =
Done b i (g a)
instance Bifunctor Decoder where
bimap =
bimapD
fmapD ::
(a -> b)
-> Decoder e a
-> Decoder e b
fmapD =
bimapD id
instance Functor (Decoder e) where
fmap =
fmapD
calculateOffset ::
XDecoder e a
-> Decoder e a
calculateOffset s =
let go r !acc =
case r of
XDone i a ->
Done i (acc fromIntegral (B.length i)) a
XFail i e ->
Fail i (acc fromIntegral (B.length i)) e
XPartial k ->
Partial (\b ->
case b of
Nothing -> go (k Nothing) acc
Just j -> go (k b) (acc + fromIntegral (B.length j)))
XBytesRead i k ->
go (k $! (acc i)) acc
in go s 0
runGetIncremental ::
Get e a
-> Decoder e a
runGetIncremental =
calculateOffset . xrunGetIncremental
takeHeadChunk ::
L.ByteString
-> Maybe B.ByteString
takeHeadChunk lbs =
case lbs of
(LI.Chunk bs _) ->
Just bs
_ ->
Nothing
dropHeadChunk ::
L.ByteString
-> L.ByteString
dropHeadChunk lbs =
case lbs of
(LI.Chunk _ lbs') ->
lbs'
_ ->
LI.Empty
runGet ::
Get e a
-> L.ByteString
-> RunGetResult e a
runGet g b =
let feedAll (Done _ _ x) _ =
_RunGet # x
feedAll (Partial k) c =
feedAll (k (takeHeadChunk c)) (dropHeadChunk c)
feedAll (Fail _ p e) _ =
_RunGetFail # (p, e)
in feedAll (runGetIncremental g) b
pushChunk ::
Decoder e a
-> B.ByteString
-> Decoder e a
pushChunk r i =
case r of
Done j p a ->
Done (j `B.append` i) p a
Partial k ->
k (Just i)
Fail j p s ->
Fail (j `B.append` i) p s
pushChunks ::
Decoder e a
-> L.ByteString
-> Decoder e a
pushChunks r0 =
let go r [] =
r
go (Done i p a) xs =
Done (B.concat (i:xs)) p a
go (Fail i p s) xs =
Fail (B.concat (i:xs)) p s
go (Partial k) (x:xs) =
go (k (Just x)) xs
in go r0 . L.toChunks
pushEndOfInput ::
Decoder e a
-> Decoder e a
pushEndOfInput r =
case r of
Done {} -> r
Partial k -> k Nothing
Fail {} -> r
getLazyByteString ::
Int64
-> Get () L.ByteString
getLazyByteString =
let consume n s =
if fromIntegral (B.length s) >= n
then
Right (B.splitAt (fromIntegral n) s)
else
Left (fromIntegral (B.length s))
go n =
do s <- get
case consume n s of
Left u ->
do put B.empty
demandInput
fmap (s:) (go (n u))
Right (w, r) ->
do put r
return [w]
in fmap L.fromChunks . go
getLazyByteStringNul ::
Get () L.ByteString
getLazyByteStringNul =
let findNull s =
case B.break (==0) s of
(w, r) ->
if B.null r
then
Nothing
else
Just (w, B.drop 1 r)
go =
do s <- get
case findNull s of
Nothing ->
do put B.empty
demandInput
fmap (s:) go
Just (w, r) ->
do put r
return [w]
in fmap L.fromChunks go
getRemainingLazyByteString ::
Get e L.ByteString
getRemainingLazyByteString =
let go =
do s <- get
put B.empty
d <- isEmpty
if d
then
return [s]
else
fmap (s:) go
in fmap L.fromChunks go
getPtr ::
Storable a =>
Int
-> Get () a
getPtr n =
readNWith n peek
getWord8 ::
Get () Word8
getWord8 =
readN 1 BU.unsafeHead
word16be ::
B.ByteString
-> Word16
word16be s =
(fromIntegral (s `BU.unsafeIndex` 0) `shiftlW16` 8) .|.
fromIntegral (s `BU.unsafeIndex` 1)
getWord16be ::
Get () Word16
getWord16be =
readN 2 word16be
word16le ::
B.ByteString
-> Word16
word16le s =
(fromIntegral (s `BU.unsafeIndex` 1) `shiftlW16` 8) .|.
fromIntegral (s `BU.unsafeIndex` 0)
getWord16le ::
Get () Word16
getWord16le =
readN 2 word16le
word32be ::
B.ByteString
-> Word32
word32be s =
(fromIntegral (s `BU.unsafeIndex` 0) `shiftlW32` 24) .|.
(fromIntegral (s `BU.unsafeIndex` 1) `shiftlW32` 16) .|.
(fromIntegral (s `BU.unsafeIndex` 2) `shiftlW32` 8) .|.
fromIntegral (s `BU.unsafeIndex` 3)
getWord32be ::
Get () Word32
getWord32be =
readN 4 word32be
word32le ::
B.ByteString
-> Word32
word32le s =
(fromIntegral (s `BU.unsafeIndex` 3) `shiftlW32` 24) .|.
(fromIntegral (s `BU.unsafeIndex` 2) `shiftlW32` 16) .|.
(fromIntegral (s `BU.unsafeIndex` 1) `shiftlW32` 8) .|.
fromIntegral (s `BU.unsafeIndex` 0)
getWord32le ::
Get () Word32
getWord32le =
readN 4 word32le
word64be ::
B.ByteString
-> Word64
word64be s =
(fromIntegral (s `BU.unsafeIndex` 0) `shiftlW64` 56) .|.
(fromIntegral (s `BU.unsafeIndex` 1) `shiftlW64` 48) .|.
(fromIntegral (s `BU.unsafeIndex` 2) `shiftlW64` 40) .|.
(fromIntegral (s `BU.unsafeIndex` 3) `shiftlW64` 32) .|.
(fromIntegral (s `BU.unsafeIndex` 4) `shiftlW64` 24) .|.
(fromIntegral (s `BU.unsafeIndex` 5) `shiftlW64` 16) .|.
(fromIntegral (s `BU.unsafeIndex` 6) `shiftlW64` 8) .|.
fromIntegral (s `BU.unsafeIndex` 7)
getWord64be ::
Get () Word64
getWord64be =
readN 8 word64be
word64le ::
B.ByteString
-> Word64
word64le s =
(fromIntegral (s `BU.unsafeIndex` 7) `shiftlW64` 56) .|.
(fromIntegral (s `BU.unsafeIndex` 6) `shiftlW64` 48) .|.
(fromIntegral (s `BU.unsafeIndex` 5) `shiftlW64` 40) .|.
(fromIntegral (s `BU.unsafeIndex` 4) `shiftlW64` 32) .|.
(fromIntegral (s `BU.unsafeIndex` 3) `shiftlW64` 24) .|.
(fromIntegral (s `BU.unsafeIndex` 2) `shiftlW64` 16) .|.
(fromIntegral (s `BU.unsafeIndex` 1) `shiftlW64` 8) .|.
fromIntegral (s `BU.unsafeIndex` 0)
getWord64le ::
Get () Word64
getWord64le =
readN 8 word64le
getWordhost ::
Get () Word
getWordhost =
getPtr (sizeOf (undefined :: Word))
getWord16host ::
Get () Word16
getWord16host =
getPtr (sizeOf (undefined :: Word16))
getWord32host ::
Get () Word32
getWord32host =
getPtr (sizeOf (undefined :: Word32))
getWord64host ::
Get () Word64
getWord64host =
getPtr (sizeOf (undefined :: Word64))
shiftlW16 ::
Word16
-> Int
-> Word16
shiftlW32 ::
Word32
-> Int
-> Word32
shiftlW64 ::
Word64
-> Int
-> Word64
#if defined(__GLASGOW_HASKELL__) && !defined(__HADDOCK__)
shiftlW16 (W16# w) (I# i) =
W16# (w `uncheckedShiftL#` i)
shiftlW32 (W32# w) (I# i) =
W32# (w `uncheckedShiftL#` i)
#if WORD_SIZE_IN_BITS < 64
shiftlW64 (W64# w) (I# i) =
W64# (w `uncheckedShiftL64#` i)
#if __GLASGOW_HASKELL__ <= 606
foreign import ccall unsafe "stg_uncheckedShiftL64"
uncheckedShiftL64# ::
Word64#
-> Int#
-> Word64#
#endif
#else
shiftlW64 (W64# w) (I# i) =
W64# (w `uncheckedShiftL#` i)
#endif
#else
shiftlW16 =
shiftL
shiftlW32 =
shiftL
shiftlW64 =
shiftL
#endif
data XDecoder e a =
XFail !B.ByteString e
| XPartial (Maybe B.ByteString -> XDecoder e a)
| XDone !B.ByteString a
| XBytesRead !Int64 (Int64 -> XDecoder e a)
xdecoder ::
(B.ByteString -> e -> x)
-> ((Maybe B.ByteString -> XDecoder e a) -> x)
-> (B.ByteString -> a -> x)
-> (Int64 -> (Int64 -> XDecoder e a) -> x)
-> XDecoder e a
-> x
xdecoder f _ _ _ (XFail b e) =
f b e
xdecoder _ p _ _ (XPartial k) =
p k
xdecoder _ _ d _ (XDone b a) =
d b a
xdecoder _ _ _ r (XBytesRead i k) =
r i k
_XFail ::
Prism' (XDecoder e a) (B.ByteString, e)
_XFail =
prism'
(uncurry XFail)
(\x -> case x of
XFail b e -> Just (b, e)
_ -> Nothing)
_XPartial ::
Prism' (XDecoder e a) (Maybe B.ByteString -> XDecoder e a)
_XPartial =
prism'
XPartial
(\x -> case x of
XPartial k -> Just k
_ -> Nothing)
_XDone ::
Prism' (XDecoder e a) (B.ByteString, a)
_XDone =
prism'
(uncurry XDone)
(\x -> case x of
XDone b a -> Just (b, a)
_ -> Nothing)
_XBytesRead ::
Prism' (XDecoder e a) (Int64, Int64 -> XDecoder e a)
_XBytesRead =
prism'
(uncurry XBytesRead)
(\x -> case x of
XBytesRead i k -> Just (i, k)
_ -> Nothing)
instance Functor (XDecoder e) where
fmap =
bimap id
instance Bifunctor XDecoder where
bimap f _ (XFail b e) =
XFail b (f e)
bimap f g (XPartial k) =
XPartial (bimap f g . k)
bimap _ g (XDone b a) =
XDone b (g a)
bimap f g (XBytesRead i k) =
XBytesRead i (bimap f g . k)
instance Bifoldable XDecoder where
bifoldMap f _ (XFail _ e) =
f e
bifoldMap _ _ (XPartial _) =
mempty
bifoldMap _ g (XDone _ a) =
g a
bifoldMap _ _ (XBytesRead _ _) =
mempty
instance Foldable (XDecoder e) where
foldMap _ (XFail _ _) =
mempty
foldMap _ (XPartial _) =
mempty
foldMap f (XDone _ a) =
f a
foldMap _ (XBytesRead _ _) =
mempty
data CompletedXDecoder e a =
CompletedFail !B.ByteString e
| CompletedDone !B.ByteString a
deriving (Eq, Ord, Show)
completedXDecoder ::
(B.ByteString -> e -> x)
-> (B.ByteString -> a -> x)
-> CompletedXDecoder e a
-> x
completedXDecoder f _ (CompletedFail b e) =
f b e
completedXDecoder _ d (CompletedDone b a) =
d b a
_CompletedFail ::
Prism' (CompletedXDecoder e a) (B.ByteString, e)
_CompletedFail =
prism'
(uncurry CompletedFail)
(\x -> case x of
CompletedFail b e -> Just (b, e)
_ -> Nothing)
_CompletedDone ::
Prism' (CompletedXDecoder e a) (B.ByteString, a)
_CompletedDone =
prism'
(uncurry CompletedDone)
(\x -> case x of
CompletedDone b a -> Just (b, a)
_ -> Nothing)
completedIso ::
Iso (CompletedXDecoder e a) (CompletedXDecoder f b) (Either e a, B.ByteString) (Either f b, B.ByteString)
completedIso =
iso
(\d -> case d of
CompletedFail b e -> (Left e, b)
CompletedDone b a -> (Right a, b))
(\z -> case z of
(Left e, b) -> CompletedFail b e
(Right a, b) -> CompletedDone b a)
completedByteString ::
Lens' (CompletedXDecoder e a) B.ByteString
completedByteString =
lens
(\d -> case d of
CompletedFail b _ -> b
CompletedDone b _ -> b)
(\d b -> case d of
CompletedFail _ e -> CompletedFail b e
CompletedDone _ a -> CompletedDone b a)
completedValue ::
Lens' (CompletedXDecoder e a) (Either e a)
completedValue =
lens
(\d -> case d of
CompletedFail _ e -> Left e
CompletedDone _ a -> Right a)
(\d z -> case d of
CompletedFail b e -> CompletedFail b (either id (pure e) z)
CompletedDone b a -> CompletedDone b (either (pure a) id z))
instance Functor (CompletedXDecoder e) where
fmap =
bimap id
instance Bifunctor CompletedXDecoder where
bimap f _ (CompletedFail b e) =
CompletedFail b (f e)
bimap _ g (CompletedDone b a) =
CompletedDone b (g a)
instance Foldable (CompletedXDecoder e) where
foldMap _ (CompletedFail _ _) =
mempty
foldMap f (CompletedDone _ a) =
f a
instance Traversable (CompletedXDecoder e) where
traverse =
bitraverse pure
instance Bifoldable CompletedXDecoder where
bifoldMap f _ (CompletedFail _ e) =
f e
bifoldMap _ g (CompletedDone _ a) =
g a
instance Bitraversable CompletedXDecoder where
bitraverse f _ (CompletedFail b e) =
fmap (CompletedFail b) (f e)
bitraverse _ g (CompletedDone b a) =
fmap (CompletedDone b) (g a)
uncomplete ::
Prism' (XDecoder e a) (CompletedXDecoder e a)
uncomplete =
prism'
(\d -> case d of
CompletedFail b e -> XFail b e
CompletedDone b a -> XDone b a)
(\d -> case d of
XFail b e -> Just (CompletedFail b e)
XPartial _ -> Nothing
XDone b a -> Just (CompletedDone b a)
XBytesRead _ _ -> Nothing)
uncompletedByteString ::
Traversal' (XDecoder e a) B.ByteString
uncompletedByteString =
uncomplete . completedByteString
uncompletedValue ::
Traversal' (XDecoder e a) (Either e a)
uncompletedValue =
uncomplete . completedValue