@@ -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
@@ -155,8 +155,18 @@ import qualified Data.Primitive.UnliftedArray as PM
155155import qualified Data.Primitive.PrimArray as PM
156156#endif
157157
158+#ifndef HAS_COERCIBLE
159+#define HAS_COERCIBLE (__GLASGOW_HASKELL__ >= 707)
160+#endif
158161
162+#if HAS_COERCIBLE
159163import Data.Coerce (Coercible, coerce)
164+coerce' :: Coercible a b => a -> b
165+coerce' = coerce
166+#else
167+coerce' :: a -> b
168+coerce' = unsafeCoerce
169+#endif
160170
161171parseIndexedJSON :: (Value -> Parser a) -> Int -> Value -> Parser a
162172parseIndexedJSON p idx value = p value <?> Index idx
@@ -396,16 +406,6 @@ class FromJSON a where
396406-- > newtype SomeId = SomeId { getSomeId :: Text }
397407-- > deriving (Eq,Ord,Hashable,FromJSONKey)
398408--
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−-- @
409409class FromJSONKey a where
410410 -- | Strategy for parsing the key of a map-like container.
411411 fromJSONKey :: FromJSONKeyFunction a
@@ -428,7 +428,11 @@ class FromJSONKey a where
428428-- At the moment this type is intentionally not exported. 'FromJSONKeyFunction'
429429-- can be inspected, but cannot be constructed.
430430data CoerceText a where
431+#if HAS_COERCIBLE
431432 CoerceText :: Coercible Text a => CoerceText a
433+#else
434+ CoerceText :: CoerceText a
435+#endif
432436
433437-- | This type is related to 'ToJSONKeyFunction'. If 'FromJSONKeyValue' is used in the
434438-- 'FromJSONKey' instance, then 'ToJSONKeyValue' should be used in the 'ToJSONKey'
@@ -448,7 +452,7 @@ data FromJSONKeyFunction a
448452
449453-- | Only law abiding up to interpretation
450454instance Functor FromJSONKeyFunction where
451− fmap h (FromJSONKeyCoerce CoerceText) = FromJSONKeyText (h . coerce)
455+ fmap h (FromJSONKeyCoerce CoerceText) = FromJSONKeyText (h . coerce')
452456 fmap h (FromJSONKeyText f) = FromJSONKeyText (h . f)
453457 fmap h (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap h . f)
454458 fmap h (FromJSONKeyValue f) = FromJSONKeyValue (fmap h . f)
@@ -462,7 +466,9 @@ instance Functor FromJSONKeyFunction where
462466--
463467-- On pre GHC 7.8 this is unconstrainted function.
464468fromJSONKeyCoerce ::
469+#if HAS_COERCIBLE
465470 Coercible Text a =>
471+#endif
466472 FromJSONKeyFunction a
467473fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
468474
@@ -470,52 +476,34 @@ fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
470476--
471477-- See note on 'fromJSONKeyCoerce'.
472478coerceFromJSONKeyFunction ::
479+#if HAS_COERCIBLE
473480 Coercible a b =>
481+#endif
474482 FromJSONKeyFunction a -> FromJSONKeyFunction b
483+#if HAS_COERCIBLE
475484coerceFromJSONKeyFunction = coerce
485+#else
486+coerceFromJSONKeyFunction (FromJSONKeyCoerce CoerceText) = FromJSONKeyCoerce CoerceText
487+coerceFromJSONKeyFunction (FromJSONKeyText f) = FromJSONKeyText (coerce' . f)
488+coerceFromJSONKeyFunction (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap coerce' . f)
489+coerceFromJSONKeyFunction (FromJSONKeyValue f) = FromJSONKeyValue (fmap coerce' . f)
490+#endif
476491
477492{-# RULES
478493 "FromJSONKeyCoerce: fmap id" forall (x :: FromJSONKeyFunction a).
479494 fmap id x = x
480495 #-}
496+#if HAS_COERCIBLE
481497{-# RULES
482498 "FromJSONKeyCoerce: fmap coerce" forall x .
483499 fmap coerce x = coerceFromJSONKeyFunction x
484500 #-}
501+#endif
485502
486503-- | Same as 'fmap'. Provided for the consistency with 'ToJSONKeyFunction'.
487504mapFromJSONKeyFunction :: (a -> b) -> FromJSONKeyFunction a -> FromJSONKeyFunction b
488505mapFromJSONKeyFunction = fmap
489506
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−
519507-------------------------------------------------------------------------------
520508-- Functions needed for documentation
521509-------------------------------------------------------------------------------
@@ -768,13 +756,13 @@ withBoundedScientific' f v = withBoundedScientific_ id f v
768756-- | A variant of 'withBoundedScientific_' parameterized by a function to apply
769757-- to the 'Parser' in case of failure.
770758withBoundedScientific_ :: (Parser a -> Parser a) -> (Scientific -> Parser a) -> Value -> Parser a
771−withBoundedScientific_ whenFail f (Number scientific) =
772− if exp10 > 1024
759+withBoundedScientific_ whenFail f v@(Number scientific) =
760+ if exponent > 1024
773761 then whenFail (fail msg)
774762 else f scientific
775763 where
776− exp10 = base10Exponent scientific
777− msg = "found a number with exponent " ++ show exp10 ++ ", but it must not be greater than 1024"
764+ exponent = base10Exponent scientific
765+ msg = "found a number with exponent " ++ show exponent ++ ", but it must not be greater than 1024"
778766withBoundedScientific_ whenFail _ v =
779767 whenFail (typeMismatch "Number" v)
780768{-# INLINE withBoundedScientific_ #-}
@@ -794,7 +782,7 @@ withBool name _ v = prependContext name (typeMismatch "Boolean" v)
794782-- | Decode a nested JSON-encoded string.
795783withEmbeddedJSON :: String -> (Value -> Parser a) -> Value -> Parser a
796784withEmbeddedJSON _ innerParser (String txt) =
797− either fail innerParser $ eitherDecode (L.fromStrict $ T.encodeUtf8 txt)
785+ either fail innerParser $ eitherDecode (Compat.fromStrict $ T.encodeUtf8 txt)
798786 where
799787 eitherDecode = eitherFormatError . eitherDecodeWith jsonEOF ifromJSON
800788 eitherFormatError = either (Left . uncurry formatError) Right
@@ -863,7 +851,7 @@ parseFieldMaybe' = (.:!)
863851-- E.g. @'explicitParseField' 'parseJSON1' :: ('FromJSON1' f, 'FromJSON' a) -> 'Object' -> 'Text' -> 'Parser' (f a)@
864852explicitParseField :: (Value -> Parser a) -> Object -> Text -> Parser a
865853explicitParseField p obj key = case H.lookup key obj of
866− Nothing -> fail $ "key " ++ show key ++ " not found"
854+ Nothing -> fail $ "key " ++ show key ++ " not present"
867855 Just v -> p v <?> Key key
868856{-# INLINE explicitParseField #-}
869857
@@ -922,16 +910,6 @@ type ConName = String
922910contextType :: TypeName -> Parser a -> Parser a
923911contextType = prependContext
924912
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−
935913-- | Add the name of the constructor being parsed to a parser's error messages.
936914contextCons :: ConName -> TypeName -> Parser a -> Parser a
937915contextCons cname tname = prependContext (showCons cname tname)
@@ -1042,46 +1020,41 @@ parseAllNullarySum :: (SumFromString f, ConstructorNames f)
10421020parseAllNullarySum tname opts =
10431021 withText tname $ \tag ->
10441022 maybe (badTag tag) return $
1045− parseSumFromString modifier tag
1023+ parseSumFromString opts tag
10461024 where
1047− badTag tag = failWithCTags tname modifier $ \cnames ->
1025+ badTag tag = failWithCTags tname opts $ \cnames ->
10481026 "expected one of the tags " ++ show cnames ++
10491027 ", but found tag " ++ show tag
1050− modifier = constructorTagModifier opts
10511028
10521029-- | Fail with an informative error message about a mismatched tag.
10531030-- The error message is parameterized by the list of expected tags,
10541031-- to be inferred from the result type of the parser.
10551032failWithCTags
1056− :: forall f a t. ConstructorNames f
1057− => TypeName -> (String -> t) -> ([t] -> String) -> Parser (f a)
1058−failWithCTags tname modifier f =
1033+ :: forall f a. ConstructorNames f
1034+ => TypeName -> Options -> ([String] -> String) -> Parser (f a)
1035+failWithCTags tname opts f =
10591036 contextType tname . fail $ f cnames
10601037 where
1061− cnames = unTagged2 (constructorTags modifier :: Tagged2 f [t])
1038+ cnames = unTagged2 (constructorTags opts :: Tagged2 f [String])
10621039
10631040class SumFromString f where
1064− parseSumFromString :: (String -> String) -> Text -> Maybe (f a)
1041+ parseSumFromString :: Options -> Text -> Maybe (f a)
10651042
10661043instance (SumFromString a, SumFromString b) => SumFromString (a :+: b) where
10671044 parseSumFromString opts key = (L1 <$> parseSumFromString opts key) <|>
10681045 (R1 <$> parseSumFromString opts key)
10691046
10701047instance (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
1048+ parseSumFromString opts key | key == name = Just $ M1 U1
1049+ | otherwise = Nothing
1050+ where
1051+ name = pack $ constructorTagModifier opts $
1052+ conName (undefined :: M1 _i c _f _p)
10801053
10811054-- | List of all constructor tags.
1082−constructorTags :: ConstructorNames a => (String -> t) -> Tagged2 a [t]
1083−constructorTags modifier =
1084− fmap DList.toList (constructorNames' modifier)
1055+constructorTags :: ConstructorNames a => Options -> Tagged2 a [String]
1056+constructorTags opts =
1057+ fmap DList.toList (constructorNames' (constructorTagModifier opts))
10851058
10861059-- | List of all constructor names of an ADT, after a given conversion
10871060-- function. (Better inlining.)
@@ -1102,16 +1075,9 @@ instance Constructor c => ConstructorNames (C1 c a) where
11021075 where
11031076 cname = conName (undefined :: M1 _i c _f _p)
11041077
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−
11121078--------------------------------------------------------------------------------
1113−parseNonAllNullarySum :: forall f c arity.
1114− ( FromPair arity f
1079+
1080+parseNonAllNullarySum :: ( FromPair arity f
11151081 , FromTaggedObject arity f
11161082 , FromUntaggedValue arity f
11171083 , ConstructorNames f
@@ -1121,7 +1087,7 @@ parseNonAllNullarySum p@(tname :* opts :* _) =
11211087 case sumEncoding opts of
11221088 TaggedObject{..} ->
11231089 withObject tname $ \obj -> do
1124− tag <- contextType tname . contextTag tagKey cnames_ $ obj .: tagKey
1090+ tag <- contextType tname $ obj .: tagKey
11251091 fromMaybe (badTag tag <?> Key tagKey) $
11261092 parseFromTaggedObject (tag :* contentsFieldName :* p) obj
11271093 where
@@ -1129,7 +1095,6 @@ parseNonAllNullarySum p@(tname :* opts :* _) =
11291095 badTag tag = failWith_ $ \cnames ->
11301096 "expected tag field to be one of " ++ show cnames ++
11311097 ", but found tag " ++ show tag
1132− cnames_ = unTagged2 (constructorTags (constructorTagModifier opts) :: Tagged2 f [String])
11331098
11341099 ObjectWithSingleField ->
11351100 withObject tname $ \obj -> case H.toList obj of
@@ -1161,7 +1126,7 @@ parseNonAllNullarySum p@(tname :* opts :* _) =
11611126
11621127 UntaggedValue -> parseUntaggedValue p
11631128 where
1164− failWith_ = failWithCTags tname (constructorTagModifier opts)
1129+ failWith_ = failWithCTags tname opts
11651130
11661131--------------------------------------------------------------------------------
11671132
@@ -1201,9 +1166,9 @@ class FromTaggedObject' arity f isRecord where
12011166 :: String :* ConName :* TypeName :* Options :* FromArgs arity a
12021167 -> Object -> Tagged isRecord (Parser (f a))
12031168
1204−instance (RecordFromJSON arity f, FieldNames f) => FromTaggedObject' arity f True where
1169+instance (RecordFromJSON arity f) => FromTaggedObject' arity f True where
12051170 -- Records are unpacked in the tagged object
1206− parseFromTaggedObject' (_ :* p) = Tagged . recordParseJSON (True :* p)
1171+ parseFromTaggedObject' (_ :* p) = Tagged . recordParseJSON p
12071172
12081173instance (ConsFromJSON arity f) => FromTaggedObject' arity f False where
12091174 -- Nonnullary nonrecords are encoded in the contents field
@@ -1244,11 +1209,11 @@ instance OVERLAPPING_
12441209 ) => ConsFromJSON' arity (S1 s a) True where
12451210 consParseJSON' p@(cname :* tname :* opts :* fargs)
12461211 | unwrapUnaryRecords opts = Tagged . fmap M1 . gParseJSON opts fargs
1247− | otherwise = Tagged . withObject (showCons cname tname) (recordParseJSON (False :* p))
1212+ | otherwise = Tagged . withObject (showCons cname tname) (recordParseJSON p)
12481213
12491214instance RecordFromJSON arity f => ConsFromJSON' arity f True where
12501215 consParseJSON' p@(cname :* tname :* _) =
1251− Tagged . withObject (showCons cname tname) (recordParseJSON (False :* p))
1216+ Tagged . withObject (showCons cname tname) (recordParseJSON p)
12521217
12531218instance OVERLAPPING_
12541219 ConsFromJSON' arity U1 False where
@@ -1274,55 +1239,21 @@ instance (ProductFromJSON arity f, ProductSize f
12741239
12751240--------------------------------------------------------------------------------
12761241
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−
12881242class RecordFromJSON arity f where
12891243 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'
13131244 :: ConName :* TypeName :* Options :* FromArgs arity a
13141245 -> Object -> Parser (f a)
13151246
1316−instance ( RecordFromJSON' arity a
1317− , RecordFromJSON' arity b
1318− ) => RecordFromJSON' arity (a :*: b) where
1319− recordParseJSON' p obj =
1320− (:*:) <$> recordParseJSON' p obj
1321− <*> recordParseJSON' p obj
1247+instance ( RecordFromJSON arity a
1248+ , RecordFromJSON arity b
1249+ ) => RecordFromJSON arity (a :*: b) where
1250+ recordParseJSON p obj =
1251+ (:*:) <$> recordParseJSON p obj
1252+ <*> recordParseJSON p obj
13221253
13231254instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
1324− RecordFromJSON' arity (S1 s a) where
1325− recordParseJSON' (cname :* tname :* opts :* fargs) obj = do
1255+ RecordFromJSON arity (S1 s a) where
1256+ recordParseJSON (cname :* tname :* opts :* fargs) obj = do
13261257 fv <- contextCons cname tname (obj .: label)
13271258 M1 <$> gParseJSON opts fargs fv <?> Key label
13281259 where
@@ -1330,16 +1261,16 @@ instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
13301261 sname = selName (undefined :: M1 _i s _f _p)
13311262
13321263instance INCOHERENT_ (Selector s, FromJSON a) =>
1333− RecordFromJSON' arity (S1 s (K1 i (Maybe a))) where
1334− recordParseJSON' (_ :* _ :* opts :* _) obj = M1 . K1 <$> obj .:? pack label
1264+ RecordFromJSON arity (S1 s (K1 i (Maybe a))) where
1265+ recordParseJSON (_ :* _ :* opts :* _) obj = M1 . K1 <$> obj .:? pack label
13351266 where
13361267 label = fieldLabelModifier opts sname
13371268 sname = selName (undefined :: M1 _i s _f _p)
13381269
13391270-- Parse an Option like a Maybe.
13401271instance INCOHERENT_ (Selector s, FromJSON a) =>
1341− RecordFromJSON' arity (S1 s (K1 i (Semigroup.Option a))) where
1342− recordParseJSON' p obj = wrap <$> recordParseJSON' p obj
1272+ RecordFromJSON arity (S1 s (K1 i (Semigroup.Option a))) where
1273+ recordParseJSON p obj = wrap <$> recordParseJSON p obj
13431274 where
13441275 wrap :: S1 s (K1 i (Maybe a)) p -> S1 s (K1 i (Semigroup.Option a)) p
13451276 wrap (M1 (K1 a)) = M1 (K1 (Semigroup.Option a))
@@ -1576,22 +1507,12 @@ instance FromJSONKey Float where
15761507 _ -> Scientific.toRealFloat <$> parseScientificText t
15771508
15781509instance (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
1510+ parseJSON = withObject "Rational" $ \obj -> do
1511+ numerator <- obj .: "numerator"
1512+ denominator <- obj .: "denominator"
1513+ if denominator == 0
1514+ then fail "Ratio denominator was 0"
1515+ else pure $ numerator % denominator
15951516 {-# INLINE parseJSON #-}
15961517
15971518-- | This instance includes a bounds check to prevent maliciously
@@ -1742,7 +1663,7 @@ instance FromJSON1 NonEmpty where
17421663 liftParseJSON p _ = withArray "NonEmpty" $
17431664 (>>= ne) . Tr.sequence . zipWith (parseIndexedJSON p) [0..] . V.toList
17441665 where
1745− ne [] = fail "parsing NonEmpty failed, unexpected empty list"
1666+ ne [] = fail "parsing NonEmpty failed, unpexpected empty list"
17461667 ne (x:xs) = pure (x :| xs)
17471668 {-# INLINE liftParseJSON #-}
17481669
@@ -2006,6 +1927,7 @@ instance FromJSON DotNetTime where
20061927-- primitive
20071928-------------------------------------------------------------------------------
20081929
1930+#if MIN_VERSION_base(4,7,0)
20091931instance FromJSON a => FromJSON (PM.Array a) where
20101932 -- note: we could do better than this if vector exposed the data
20111933 -- constructor in Data.Vector.
@@ -2023,6 +1945,7 @@ instance (PM.PrimUnlifted a,FromJSON a) => FromJSON (PM.UnliftedArray a) where
20231945 parseJSON = fmap Exts.fromList . parseJSON
20241946#endif
20251947#endif
1948+#endif
20261949
20271950-------------------------------------------------------------------------------
20281951-- time