@@ -5,16 +5,19 @@
55{-# LANGUAGE FlexibleInstances #-}
66{-# LANGUAGE GADTs #-}
77{-# LANGUAGE MultiParamTypeClasses #-}
8+{-# LANGUAGE NamedFieldPuns #-}
89{-# LANGUAGE NoImplicitPrelude #-}
910{-# LANGUAGE OverloadedStrings #-}
10−{-# LANGUAGE PolyKinds #-}
1111{-# LANGUAGE RecordWildCards #-}
1212{-# LANGUAGE ScopedTypeVariables #-}
1313{-# LANGUAGE TypeOperators #-}
14−{-# LANGUAGE TupleSections #-}
1514{-# LANGUAGE UndecidableInstances #-}
1615{-# LANGUAGE ViewPatterns #-}
1716
17+#if __GLASGOW_HASKELL__ >= 706
18+{-# LANGUAGE PolyKinds #-}
19+#endif
20+
1821#include "incoherent-compat.h"
1922#include "overlapping-compat.h"
2023
@@ -42,9 +45,6 @@ module Data.Aeson.Types.FromJSON
4245 , coerceFromJSONKeyFunction
4346 , mapFromJSONKeyFunction
4447
45− , GFromJSONKey()
46− , genericFromJSONKey
47−
4848 -- * List functions
4949 , listParser
5050
@@ -118,9 +118,9 @@ import GHC.Generics
118118import Numeric.Natural (Natural)
119119import Text.ParserCombinators.ReadP (readP_to_S)
120120import Unsafe.Coerce (unsafeCoerce)
121+import qualified Data.Aeson.Compat as Compat
121122import qualified Data.Aeson.Parser.Time as Time
122123import qualified Data.Attoparsec.ByteString.Char8 as A (endOfInput, parseOnly, scientific)
123−import qualified Data.ByteString.Lazy as L
124124import qualified Data.DList as DList
125125import qualified Data.HashMap.Strict as H
126126import qualified Data.HashSet as HashSet
@@ -149,14 +149,22 @@ import qualified Data.Primitive.SmallArray as PM
149149import qualified Data.Primitive.Types as PM
150150
151151#if MIN_VERSION_primitive(0,6,4)
152−#if !MIN_VERSION_primitive(0,7,0)
153152import qualified Data.Primitive.UnliftedArray as PM
154−#endif
155153import qualified Data.Primitive.PrimArray as PM
156154#endif
157155
156+#ifndef HAS_COERCIBLE
157+#define HAS_COERCIBLE (__GLASGOW_HASKELL__ >= 707)
158+#endif
158159
160+#if HAS_COERCIBLE
159161import Data.Coerce (Coercible, coerce)
162+coerce' :: Coercible a b => a -> b
163+coerce' = coerce
164+#else
165+coerce' :: a -> b
166+coerce' = unsafeCoerce
167+#endif
160168
161169parseIndexedJSON :: (Value -> Parser a) -> Int -> Value -> Parser a
162170parseIndexedJSON p idx value = p value <?> Index idx
@@ -396,16 +404,6 @@ class FromJSON a where
396404-- > newtype SomeId = SomeId { getSomeId :: Text }
397405-- > deriving (Eq,Ord,Hashable,FromJSONKey)
398406--
399−-- If you have a sum of nullary constructors, you may use the generic
400−-- implementation:
401−--
402−-- @
403−-- data Color = Red | Green | Blue
404−-- deriving Generic
405−--
406−-- instance 'FromJSONKey' Color where
407−-- 'fromJSONKey' = 'genericFromJSONKey' 'defaultJSONKeyOptions'
408−-- @
409407class FromJSONKey a where
410408 -- | Strategy for parsing the key of a map-like container.
411409 fromJSONKey :: FromJSONKeyFunction a
@@ -428,7 +426,11 @@ class FromJSONKey a where
428426-- At the moment this type is intentionally not exported. 'FromJSONKeyFunction'
429427-- can be inspected, but cannot be constructed.
430428data CoerceText a where
429+#if HAS_COERCIBLE
431430 CoerceText :: Coercible Text a => CoerceText a
431+#else
432+ CoerceText :: CoerceText a
433+#endif
432434
433435-- | This type is related to 'ToJSONKeyFunction'. If 'FromJSONKeyValue' is used in the
434436-- 'FromJSONKey' instance, then 'ToJSONKeyValue' should be used in the 'ToJSONKey'
@@ -448,7 +450,7 @@ data FromJSONKeyFunction a
448450
449451-- | Only law abiding up to interpretation
450452instance Functor FromJSONKeyFunction where
451− fmap h (FromJSONKeyCoerce CoerceText) = FromJSONKeyText (h . coerce)
453+ fmap h (FromJSONKeyCoerce CoerceText) = FromJSONKeyText (h . coerce')
452454 fmap h (FromJSONKeyText f) = FromJSONKeyText (h . f)
453455 fmap h (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap h . f)
454456 fmap h (FromJSONKeyValue f) = FromJSONKeyValue (fmap h . f)
@@ -462,7 +464,9 @@ instance Functor FromJSONKeyFunction where
462464--
463465-- On pre GHC 7.8 this is unconstrainted function.
464466fromJSONKeyCoerce ::
467+#if HAS_COERCIBLE
465468 Coercible Text a =>
469+#endif
466470 FromJSONKeyFunction a
467471fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
468472
@@ -470,52 +474,34 @@ fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
470474--
471475-- See note on 'fromJSONKeyCoerce'.
472476coerceFromJSONKeyFunction ::
477+#if HAS_COERCIBLE
473478 Coercible a b =>
479+#endif
474480 FromJSONKeyFunction a -> FromJSONKeyFunction b
481+#if HAS_COERCIBLE
475482coerceFromJSONKeyFunction = coerce
483+#else
484+coerceFromJSONKeyFunction (FromJSONKeyCoerce CoerceText) = FromJSONKeyCoerce CoerceText
485+coerceFromJSONKeyFunction (FromJSONKeyText f) = FromJSONKeyText (coerce' . f)
486+coerceFromJSONKeyFunction (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap coerce' . f)
487+coerceFromJSONKeyFunction (FromJSONKeyValue f) = FromJSONKeyValue (fmap coerce' . f)
488+#endif
476489
477490{-# RULES
478491 "FromJSONKeyCoerce: fmap id" forall (x :: FromJSONKeyFunction a).
479492 fmap id x = x
480493 #-}
494+#if HAS_COERCIBLE
481495{-# RULES
482496 "FromJSONKeyCoerce: fmap coerce" forall x .
483497 fmap coerce x = coerceFromJSONKeyFunction x
484498 #-}
499+#endif
485500
486501-- | Same as 'fmap'. Provided for the consistency with 'ToJSONKeyFunction'.
487502mapFromJSONKeyFunction :: (a -> b) -> FromJSONKeyFunction a -> FromJSONKeyFunction b
488503mapFromJSONKeyFunction = fmap
489504
490−-- | 'fromJSONKey' for 'Generic' types.
491−-- These types must be sums of nullary constructors, whose names will be used
492−-- as keys for JSON objects.
493−--
494−-- See also 'genericToJSONKey'.
495−--
496−-- === __Example__
497−--
498−-- @
499−-- data Color = Red | Green | Blue
500−-- deriving 'Generic'
501−--
502−-- instance 'FromJSONKey' Color where
503−-- 'fromJSONKey' = 'genericFromJSONKey' 'defaultJSONKeyOptions'
504−-- @
505−genericFromJSONKey :: forall a. (Generic a, GFromJSONKey (Rep a))
506− => JSONKeyOptions
507− -> FromJSONKeyFunction a
508−genericFromJSONKey opts = FromJSONKeyTextParser $ \t ->
509− case parseSumFromString (keyModifier opts) t of
510− Nothing -> fail $
511− "invalid key " ++ show t ++ ", expected one of " ++ show cnames
512− Just k -> pure (to k)
513− where
514− cnames = unTagged2 (constructorTags (keyModifier opts) :: Tagged2 (Rep a) [String])
515−
516−class (ConstructorNames f, SumFromString f) => GFromJSONKey f where
517−instance (ConstructorNames f, SumFromString f) => GFromJSONKey f where
518−
519505-------------------------------------------------------------------------------
520506-- Functions needed for documentation
521507-------------------------------------------------------------------------------
@@ -768,13 +754,13 @@ withBoundedScientific' f v = withBoundedScientific_ id f v
768754-- | A variant of 'withBoundedScientific_' parameterized by a function to apply
769755-- to the 'Parser' in case of failure.
770756withBoundedScientific_ :: (Parser a -> Parser a) -> (Scientific -> Parser a) -> Value -> Parser a
771−withBoundedScientific_ whenFail f (Number scientific) =
772− if exp10 > 1024
757+withBoundedScientific_ whenFail f v@(Number scientific) =
758+ if exponent > 1024
773759 then whenFail (fail msg)
774760 else f scientific
775761 where
776− exp10 = base10Exponent scientific
777− msg = "found a number with exponent " ++ show exp10 ++ ", but it must not be greater than 1024"
762+ exponent = base10Exponent scientific
763+ msg = "found a number with exponent " ++ show exponent ++ ", but it must not be greater than 1024"
778764withBoundedScientific_ whenFail _ v =
779765 whenFail (typeMismatch "Number" v)
780766{-# INLINE withBoundedScientific_ #-}
@@ -794,7 +780,7 @@ withBool name _ v = prependContext name (typeMismatch "Boolean" v)
794780-- | Decode a nested JSON-encoded string.
795781withEmbeddedJSON :: String -> (Value -> Parser a) -> Value -> Parser a
796782withEmbeddedJSON _ innerParser (String txt) =
797− either fail innerParser $ eitherDecode (L.fromStrict $ T.encodeUtf8 txt)
783+ either fail innerParser $ eitherDecode (Compat.fromStrict $ T.encodeUtf8 txt)
798784 where
799785 eitherDecode = eitherFormatError . eitherDecodeWith jsonEOF ifromJSON
800786 eitherFormatError = either (Left . uncurry formatError) Right
@@ -863,7 +849,7 @@ parseFieldMaybe' = (.:!)
863849-- E.g. @'explicitParseField' 'parseJSON1' :: ('FromJSON1' f, 'FromJSON' a) -> 'Object' -> 'Text' -> 'Parser' (f a)@
864850explicitParseField :: (Value -> Parser a) -> Object -> Text -> Parser a
865851explicitParseField p obj key = case H.lookup key obj of
866− Nothing -> fail $ "key " ++ show key ++ " not found"
852+ Nothing -> fail $ "key " ++ show key ++ " not present"
867853 Just v -> p v <?> Key key
868854{-# INLINE explicitParseField #-}
869855
@@ -922,16 +908,6 @@ type ConName = String
922908contextType :: TypeName -> Parser a -> Parser a
923909contextType = prependContext
924910
925−-- | Add the tagKey that will be looked up while building an ADT
926−-- | Produce the error equivalent to
927−-- | Left "Error in $: parsing T failed, expected an object with keys "tag" and
928−-- | "contents", where "tag" i-- |s associated to one of ["Foo", "Bar"],
929−-- | The parser returned error was: could not find key "tag"
930−contextTag :: Text -> [String] -> Parser a -> Parser a
931−contextTag tagKey cnames = prependFailure
932− ("expected Object with key \"" ++ unpack tagKey ++ "\"" ++
933− " containing one of " ++ show cnames ++ ", ")
934−
935911-- | Add the name of the constructor being parsed to a parser's error messages.
936912contextCons :: ConName -> TypeName -> Parser a -> Parser a
937913contextCons cname tname = prependContext (showCons cname tname)
@@ -1042,46 +1018,41 @@ parseAllNullarySum :: (SumFromString f, ConstructorNames f)
10421018parseAllNullarySum tname opts =
10431019 withText tname $ \tag ->
10441020 maybe (badTag tag) return $
1045− parseSumFromString modifier tag
1021+ parseSumFromString opts tag
10461022 where
1047− badTag tag = failWithCTags tname modifier $ \cnames ->
1023+ badTag tag = failWithCTags tname opts $ \cnames ->
10481024 "expected one of the tags " ++ show cnames ++
10491025 ", but found tag " ++ show tag
1050− modifier = constructorTagModifier opts
10511026
10521027-- | Fail with an informative error message about a mismatched tag.
10531028-- The error message is parameterized by the list of expected tags,
10541029-- to be inferred from the result type of the parser.
10551030failWithCTags
1056− :: forall f a t. ConstructorNames f
1057− => TypeName -> (String -> t) -> ([t] -> String) -> Parser (f a)
1058−failWithCTags tname modifier f =
1031+ :: forall f a. ConstructorNames f
1032+ => TypeName -> Options -> ([String] -> String) -> Parser (f a)
1033+failWithCTags tname opts f =
10591034 contextType tname . fail $ f cnames
10601035 where
1061− cnames = unTagged2 (constructorTags modifier :: Tagged2 f [t])
1036+ cnames = unTagged2 (constructorTags opts :: Tagged2 f [String])
10621037
10631038class SumFromString f where
1064− parseSumFromString :: (String -> String) -> Text -> Maybe (f a)
1039+ parseSumFromString :: Options -> Text -> Maybe (f a)
10651040
10661041instance (SumFromString a, SumFromString b) => SumFromString (a :+: b) where
10671042 parseSumFromString opts key = (L1 <$> parseSumFromString opts key) <|>
10681043 (R1 <$> parseSumFromString opts key)
10691044
10701045instance (Constructor c) => SumFromString (C1 c U1) where
1071− parseSumFromString modifier key
1072− | key == name = Just $ M1 U1
1073− | otherwise = Nothing
1074− where
1075− name = pack $ modifier $ conName (undefined :: M1 _i c _f _p)
1076−
1077−-- For genericFromJSONKey
1078−instance SumFromString a => SumFromString (D1 d a) where
1079− parseSumFromString modifier key = M1 <$> parseSumFromString modifier key
1046+ parseSumFromString opts key | key == name = Just $ M1 U1
1047+ | otherwise = Nothing
1048+ where
1049+ name = pack $ constructorTagModifier opts $
1050+ conName (undefined :: M1 _i c _f _p)
10801051
10811052-- | List of all constructor tags.
1082−constructorTags :: ConstructorNames a => (String -> t) -> Tagged2 a [t]
1083−constructorTags modifier =
1084− fmap DList.toList (constructorNames' modifier)
1053+constructorTags :: ConstructorNames a => Options -> Tagged2 a [String]
1054+constructorTags opts =
1055+ fmap DList.toList (constructorNames' (constructorTagModifier opts))
10851056
10861057-- | List of all constructor names of an ADT, after a given conversion
10871058-- function. (Better inlining.)
@@ -1102,16 +1073,9 @@ instance Constructor c => ConstructorNames (C1 c a) where
11021073 where
11031074 cname = conName (undefined :: M1 _i c _f _p)
11041075
1105−-- For genericFromJSONKey
1106−instance ConstructorNames a => ConstructorNames (D1 d a) where
1107− constructorNames' = retag . constructorNames'
1108− where
1109− retag :: Tagged2 a u -> Tagged2 (D1 d a) u
1110− retag (Tagged2 x) = Tagged2 x
1111−
11121076--------------------------------------------------------------------------------
1113−parseNonAllNullarySum :: forall f c arity.
1114− ( FromPair arity f
1077+
1078+parseNonAllNullarySum :: ( FromPair arity f
11151079 , FromTaggedObject arity f
11161080 , FromUntaggedValue arity f
11171081 , ConstructorNames f
@@ -1121,7 +1085,7 @@ parseNonAllNullarySum p@(tname :* opts :* _) =
11211085 case sumEncoding opts of
11221086 TaggedObject{..} ->
11231087 withObject tname $ \obj -> do
1124− tag <- contextType tname . contextTag tagKey cnames_ $ obj .: tagKey
1088+ tag <- contextType tname $ obj .: tagKey
11251089 fromMaybe (badTag tag <?> Key tagKey) $
11261090 parseFromTaggedObject (tag :* contentsFieldName :* p) obj
11271091 where
@@ -1129,7 +1093,6 @@ parseNonAllNullarySum p@(tname :* opts :* _) =
11291093 badTag tag = failWith_ $ \cnames ->
11301094 "expected tag field to be one of " ++ show cnames ++
11311095 ", but found tag " ++ show tag
1132− cnames_ = unTagged2 (constructorTags (constructorTagModifier opts) :: Tagged2 f [String])
11331096
11341097 ObjectWithSingleField ->
11351098 withObject tname $ \obj -> case H.toList obj of
@@ -1161,7 +1124,7 @@ parseNonAllNullarySum p@(tname :* opts :* _) =
11611124
11621125 UntaggedValue -> parseUntaggedValue p
11631126 where
1164− failWith_ = failWithCTags tname (constructorTagModifier opts)
1127+ failWith_ = failWithCTags tname opts
11651128
11661129--------------------------------------------------------------------------------
11671130
@@ -1201,9 +1164,9 @@ class FromTaggedObject' arity f isRecord where
12011164 :: String :* ConName :* TypeName :* Options :* FromArgs arity a
12021165 -> Object -> Tagged isRecord (Parser (f a))
12031166
1204−instance (RecordFromJSON arity f, FieldNames f) => FromTaggedObject' arity f True where
1167+instance (RecordFromJSON arity f) => FromTaggedObject' arity f True where
12051168 -- Records are unpacked in the tagged object
1206− parseFromTaggedObject' (_ :* p) = Tagged . recordParseJSON (True :* p)
1169+ parseFromTaggedObject' (_ :* p) = Tagged . recordParseJSON p
12071170
12081171instance (ConsFromJSON arity f) => FromTaggedObject' arity f False where
12091172 -- Nonnullary nonrecords are encoded in the contents field
@@ -1244,11 +1207,11 @@ instance OVERLAPPING_
12441207 ) => ConsFromJSON' arity (S1 s a) True where
12451208 consParseJSON' p@(cname :* tname :* opts :* fargs)
12461209 | unwrapUnaryRecords opts = Tagged . fmap M1 . gParseJSON opts fargs
1247− | otherwise = Tagged . withObject (showCons cname tname) (recordParseJSON (False :* p))
1210+ | otherwise = Tagged . withObject (showCons cname tname) (recordParseJSON p)
12481211
12491212instance RecordFromJSON arity f => ConsFromJSON' arity f True where
12501213 consParseJSON' p@(cname :* tname :* _) =
1251− Tagged . withObject (showCons cname tname) (recordParseJSON (False :* p))
1214+ Tagged . withObject (showCons cname tname) (recordParseJSON p)
12521215
12531216instance OVERLAPPING_
12541217 ConsFromJSON' arity U1 False where
@@ -1274,55 +1237,21 @@ instance (ProductFromJSON arity f, ProductSize f
12741237
12751238--------------------------------------------------------------------------------
12761239
1277−class FieldNames f where
1278− fieldNames :: f a -> [Text] -> [Text]
1279−
1280−instance (FieldNames a, FieldNames b) => FieldNames (a :*: b) where
1281− fieldNames _ =
1282− fieldNames (undefined :: a x) .
1283− fieldNames (undefined :: b y)
1284−
1285−instance (Selector s) => FieldNames (S1 s f) where
1286− fieldNames _ = (pack (selName (undefined :: M1 _i s _f _p)) :)
1287−
12881240class RecordFromJSON arity f where
12891241 recordParseJSON
1290− :: Bool :* ConName :* TypeName :* Options :* FromArgs arity a
1291− -> Object -> Parser (f a)
1292−
1293−instance ( FieldNames f
1294− , RecordFromJSON' arity f
1295− ) => RecordFromJSON arity f where
1296− recordParseJSON (fromTaggedSum :* p@(cname :* tname :* opts :* _)) =
1297− \obj -> checkUnknown obj >> recordParseJSON' p obj
1298− where
1299− knownFields :: H.HashMap Text ()
1300− knownFields = H.fromList $ map (,()) $
1301− fieldNames (undefined :: f a)
1302− [pack (tagFieldName (sumEncoding opts)) | fromTaggedSum]
1303− checkUnknown =
1304− if not (rejectUnknownFields opts)
1305− then \_ -> return ()
1306− else \obj -> case H.keys (H.difference obj knownFields) of
1307− [] -> return ()
1308− unknownFields -> contextCons cname tname $
1309− fail ("unknown fields: " ++ show unknownFields)
1310−
1311−class RecordFromJSON' arity f where
1312− recordParseJSON'
13131242 :: ConName :* TypeName :* Options :* FromArgs arity a
13141243 -> Object -> Parser (f a)
13151244
1316−instance ( RecordFromJSON' arity a
1317− , RecordFromJSON' arity b
1318− ) => RecordFromJSON' arity (a :*: b) where
1319− recordParseJSON' p obj =
1320− (:*:) <$> recordParseJSON' p obj
1321− <*> recordParseJSON' p obj
1245+instance ( RecordFromJSON arity a
1246+ , RecordFromJSON arity b
1247+ ) => RecordFromJSON arity (a :*: b) where
1248+ recordParseJSON p obj =
1249+ (:*:) <$> recordParseJSON p obj
1250+ <*> recordParseJSON p obj
13221251
13231252instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
1324− RecordFromJSON' arity (S1 s a) where
1325− recordParseJSON' (cname :* tname :* opts :* fargs) obj = do
1253+ RecordFromJSON arity (S1 s a) where
1254+ recordParseJSON (cname :* tname :* opts :* fargs) obj = do
13261255 fv <- contextCons cname tname (obj .: label)
13271256 M1 <$> gParseJSON opts fargs fv <?> Key label
13281257 where
@@ -1330,16 +1259,16 @@ instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
13301259 sname = selName (undefined :: M1 _i s _f _p)
13311260
13321261instance INCOHERENT_ (Selector s, FromJSON a) =>
1333− RecordFromJSON' arity (S1 s (K1 i (Maybe a))) where
1334− recordParseJSON' (_ :* _ :* opts :* _) obj = M1 . K1 <$> obj .:? pack label
1262+ RecordFromJSON arity (S1 s (K1 i (Maybe a))) where
1263+ recordParseJSON (_ :* _ :* opts :* _) obj = M1 . K1 <$> obj .:? pack label
13351264 where
13361265 label = fieldLabelModifier opts sname
13371266 sname = selName (undefined :: M1 _i s _f _p)
13381267
13391268-- Parse an Option like a Maybe.
13401269instance INCOHERENT_ (Selector s, FromJSON a) =>
1341− RecordFromJSON' arity (S1 s (K1 i (Semigroup.Option a))) where
1342− recordParseJSON' p obj = wrap <$> recordParseJSON' p obj
1270+ RecordFromJSON arity (S1 s (K1 i (Semigroup.Option a))) where
1271+ recordParseJSON p obj = wrap <$> recordParseJSON p obj
13431272 where
13441273 wrap :: S1 s (K1 i (Maybe a)) p -> S1 s (K1 i (Semigroup.Option a)) p
13451274 wrap (M1 (K1 a)) = M1 (K1 (Semigroup.Option a))
@@ -1576,22 +1505,12 @@ instance FromJSONKey Float where
15761505 _ -> Scientific.toRealFloat <$> parseScientificText t
15771506
15781507instance (FromJSON a, Integral a) => FromJSON (Ratio a) where
1579− parseJSON (Number x)
1580− | exp10 <= 1024
1581− , exp10 >= -1024 = return $! realToFrac x
1582− | otherwise = prependContext "Ratio" $ fail msg
1583− where
1584− exp10 = base10Exponent x
1585− msg = "found a number with exponent " ++ show exp10
1586− ++ ", but it must not be greater than 1024 or less than -1024"
1587− parseJSON o = objParser o
1588− where
1589− objParser = withObject "Rational" $ \obj -> do
1590− numerator <- obj .: "numerator"
1591− denominator <- obj .: "denominator"
1592− if denominator == 0
1593− then fail "Ratio denominator was 0"
1594− else pure $ numerator % denominator
1508+ parseJSON = withObject "Rational" $ \obj -> do
1509+ numerator <- obj .: "numerator"
1510+ denominator <- obj .: "denominator"
1511+ if denominator == 0
1512+ then fail "Ratio denominator was 0"
1513+ else pure $ numerator % denominator
15951514 {-# INLINE parseJSON #-}
15961515
15971516-- | This instance includes a bounds check to prevent maliciously
@@ -1742,7 +1661,7 @@ instance FromJSON1 NonEmpty where
17421661 liftParseJSON p _ = withArray "NonEmpty" $
17431662 (>>= ne) . Tr.sequence . zipWith (parseIndexedJSON p) [0..] . V.toList
17441663 where
1745− ne [] = fail "parsing NonEmpty failed, unexpected empty list"
1664+ ne [] = fail "parsing NonEmpty failed, unpexpected empty list"
17461665 ne (x:xs) = pure (x :| xs)
17471666 {-# INLINE liftParseJSON #-}
17481667
@@ -2006,6 +1925,7 @@ instance FromJSON DotNetTime where
20061925-- primitive
20071926-------------------------------------------------------------------------------
20081927
1928+#if MIN_VERSION_base(4,7,0)
20091929instance FromJSON a => FromJSON (PM.Array a) where
20101930 -- note: we could do better than this if vector exposed the data
20111931 -- constructor in Data.Vector.
@@ -2018,7 +1938,6 @@ instance FromJSON a => FromJSON (PM.SmallArray a) where
20181938instance (PM.Prim a,FromJSON a) => FromJSON (PM.PrimArray a) where
20191939 parseJSON = fmap Exts.fromList . parseJSON
20201940
2021−#if !MIN_VERSION_primitive(0,7,0)
20221941instance (PM.PrimUnlifted a,FromJSON a) => FromJSON (PM.UnliftedArray a) where
20231942 parseJSON = fmap Exts.fromList . parseJSON
20241943#endif