@@ -7,16 +7,14 @@
7{-# LANGUAGE MultiParamTypeClasses #-}
7{-# LANGUAGE MultiParamTypeClasses #-}
8{-# LANGUAGE NoImplicitPrelude #-}
8{-# LANGUAGE NoImplicitPrelude #-}
9{-# LANGUAGE OverloadedStrings #-}
9{-# LANGUAGE OverloadedStrings #-}
10+{-# LANGUAGE PolyKinds #-}
10{-# LANGUAGE RecordWildCards #-}
11{-# LANGUAGE RecordWildCards #-}
11{-# LANGUAGE ScopedTypeVariables #-}
12{-# LANGUAGE ScopedTypeVariables #-}
12{-# LANGUAGE TypeOperators #-}
13{-# LANGUAGE TypeOperators #-}
14+{-# LANGUAGE TupleSections #-}
13{-# LANGUAGE UndecidableInstances #-}
15{-# LANGUAGE UndecidableInstances #-}
14{-# LANGUAGE ViewPatterns #-}
16{-# LANGUAGE ViewPatterns #-}
16−#if __GLASGOW_HASKELL__ >= 706
17−{-# LANGUAGE PolyKinds #-}
20#include "incoherent-compat.h"
18#include "incoherent-compat.h"
21#include "overlapping-compat.h"
19#include "overlapping-compat.h"
@@ -120,9 +118,9 @@ import GHC.Generics
120import Numeric.Natural (Natural)
118import Numeric.Natural (Natural)
121import Text.ParserCombinators.ReadP (readP_to_S)
119import Text.ParserCombinators.ReadP (readP_to_S)
122import Unsafe.Coerce (unsafeCoerce)
120import Unsafe.Coerce (unsafeCoerce)
123−import qualified Data.Aeson.Compat as Compat
124import qualified Data.Aeson.Parser.Time as Time
121import qualified Data.Aeson.Parser.Time as Time
125import qualified Data.Attoparsec.ByteString.Char8 as A (endOfInput, parseOnly, scientific)
122import qualified Data.Attoparsec.ByteString.Char8 as A (endOfInput, parseOnly, scientific)
123+import qualified Data.ByteString.Lazy as L
126import qualified Data.DList as DList
124import qualified Data.DList as DList
127import qualified Data.HashMap.Strict as H
125import qualified Data.HashMap.Strict as H
128import qualified Data.HashSet as HashSet
126import qualified Data.HashSet as HashSet
@@ -157,18 +155,8 @@ import qualified Data.Primitive.UnliftedArray as PM
157import qualified Data.Primitive.PrimArray as PM
155import qualified Data.Primitive.PrimArray as PM
160−#ifndef HAS_COERCIBLE
161−#define HAS_COERCIBLE (__GLASGOW_HASKELL__ >= 707)
165import Data.Coerce (Coercible, coerce)
159import Data.Coerce (Coercible, coerce)
166−coerce' :: Coercible a b => a -> b
170−coerce' = unsafeCoerce
173parseIndexedJSON :: (Value -> Parser a) -> Int -> Value -> Parser a
161parseIndexedJSON :: (Value -> Parser a) -> Int -> Value -> Parser a
174parseIndexedJSON p idx value = p value <?> Index idx
162parseIndexedJSON p idx value = p value <?> Index idx
@@ -440,11 +428,7 @@ class FromJSONKey a where
440-- At the moment this type is intentionally not exported. 'FromJSONKeyFunction'
428-- At the moment this type is intentionally not exported. 'FromJSONKeyFunction'
441-- can be inspected, but cannot be constructed.
429-- can be inspected, but cannot be constructed.
442data CoerceText a where
430data CoerceText a where
444 CoerceText :: Coercible Text a => CoerceText a
431 CoerceText :: Coercible Text a => CoerceText a
446− CoerceText :: CoerceText a
449-- | This type is related to 'ToJSONKeyFunction'. If 'FromJSONKeyValue' is used in the
433-- | This type is related to 'ToJSONKeyFunction'. If 'FromJSONKeyValue' is used in the
450-- 'FromJSONKey' instance, then 'ToJSONKeyValue' should be used in the 'ToJSONKey'
434-- 'FromJSONKey' instance, then 'ToJSONKeyValue' should be used in the 'ToJSONKey'
@@ -464,7 +448,7 @@ data FromJSONKeyFunction a
465-- | Only law abiding up to interpretation
449-- | Only law abiding up to interpretation
466instance Functor FromJSONKeyFunction where
450instance Functor FromJSONKeyFunction where
467− fmap h (FromJSONKeyCoerce CoerceText) = FromJSONKeyText (h . coerce')
451+ fmap h (FromJSONKeyCoerce CoerceText) = FromJSONKeyText (h . coerce)
468 fmap h (FromJSONKeyText f) = FromJSONKeyText (h . f)
452 fmap h (FromJSONKeyText f) = FromJSONKeyText (h . f)
469 fmap h (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap h . f)
453 fmap h (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap h . f)
470 fmap h (FromJSONKeyValue f) = FromJSONKeyValue (fmap h . f)
454 fmap h (FromJSONKeyValue f) = FromJSONKeyValue (fmap h . f)
@@ -478,9 +462,7 @@ instance Functor FromJSONKeyFunction where
479-- On pre GHC 7.8 this is unconstrainted function.
463-- On pre GHC 7.8 this is unconstrainted function.
480fromJSONKeyCoerce ::
464fromJSONKeyCoerce ::
482 Coercible Text a =>
465 Coercible Text a =>
484 FromJSONKeyFunction a
466 FromJSONKeyFunction a
485fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
467fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
@@ -488,29 +470,18 @@ fromJSONKeyCoerce = FromJSONKeyCoerce CoerceText
489-- See note on 'fromJSONKeyCoerce'.
471-- See note on 'fromJSONKeyCoerce'.
490coerceFromJSONKeyFunction ::
472coerceFromJSONKeyFunction ::
492 Coercible a b =>
473 Coercible a b =>
494 FromJSONKeyFunction a -> FromJSONKeyFunction b
474 FromJSONKeyFunction a -> FromJSONKeyFunction b
496coerceFromJSONKeyFunction = coerce
475coerceFromJSONKeyFunction = coerce
498−coerceFromJSONKeyFunction (FromJSONKeyCoerce CoerceText) = FromJSONKeyCoerce CoerceText
499−coerceFromJSONKeyFunction (FromJSONKeyText f) = FromJSONKeyText (coerce' . f)
500−coerceFromJSONKeyFunction (FromJSONKeyTextParser f) = FromJSONKeyTextParser (fmap coerce' . f)
501−coerceFromJSONKeyFunction (FromJSONKeyValue f) = FromJSONKeyValue (fmap coerce' . f)
505 "FromJSONKeyCoerce: fmap id" forall (x :: FromJSONKeyFunction a).
478 "FromJSONKeyCoerce: fmap id" forall (x :: FromJSONKeyFunction a).
506 fmap id x = x
479 fmap id x = x
510 "FromJSONKeyCoerce: fmap coerce" forall x .
482 "FromJSONKeyCoerce: fmap coerce" forall x .
511 fmap coerce x = coerceFromJSONKeyFunction x
483 fmap coerce x = coerceFromJSONKeyFunction x
515-- | Same as 'fmap'. Provided for the consistency with 'ToJSONKeyFunction'.
486-- | Same as 'fmap'. Provided for the consistency with 'ToJSONKeyFunction'.
516mapFromJSONKeyFunction :: (a -> b) -> FromJSONKeyFunction a -> FromJSONKeyFunction b
487mapFromJSONKeyFunction :: (a -> b) -> FromJSONKeyFunction a -> FromJSONKeyFunction b
@@ -797,13 +768,13 @@ withBoundedScientific' f v = withBoundedScientific_ id f v
797-- | A variant of 'withBoundedScientific_' parameterized by a function to apply
768-- | A variant of 'withBoundedScientific_' parameterized by a function to apply
798-- to the 'Parser' in case of failure.
769-- to the 'Parser' in case of failure.
799withBoundedScientific_ :: (Parser a -> Parser a) -> (Scientific -> Parser a) -> Value -> Parser a
770withBoundedScientific_ :: (Parser a -> Parser a) -> (Scientific -> Parser a) -> Value -> Parser a
800−withBoundedScientific_ whenFail f v@(Number scientific) =
771+withBoundedScientific_ whenFail f (Number scientific) =
801− if exponent > 1024
772+ if exp10 > 1024
802 then whenFail (fail msg)
773 then whenFail (fail msg)
803 else f scientific
774 else f scientific
805− exponent = base10Exponent scientific
776+ exp10 = base10Exponent scientific
806− msg = "found a number with exponent " ++ show exponent ++ ", but it must not be greater than 1024"
777+ msg = "found a number with exponent " ++ show exp10 ++ ", but it must not be greater than 1024"
807withBoundedScientific_ whenFail _ v =
778withBoundedScientific_ whenFail _ v =
808 whenFail (typeMismatch "Number" v)
779 whenFail (typeMismatch "Number" v)
809{-# INLINE withBoundedScientific_ #-}
780{-# INLINE withBoundedScientific_ #-}
@@ -823,7 +794,7 @@ withBool name _ v = prependContext name (typeMismatch "Boolean" v)
823-- | Decode a nested JSON-encoded string.
794-- | Decode a nested JSON-encoded string.
824withEmbeddedJSON :: String -> (Value -> Parser a) -> Value -> Parser a
795withEmbeddedJSON :: String -> (Value -> Parser a) -> Value -> Parser a
825withEmbeddedJSON _ innerParser (String txt) =
796withEmbeddedJSON _ innerParser (String txt) =
826− either fail innerParser $ eitherDecode (Compat.fromStrict $ T.encodeUtf8 txt)
797+ either fail innerParser $ eitherDecode (L.fromStrict $ T.encodeUtf8 txt)
828 eitherDecode = eitherFormatError . eitherDecodeWith jsonEOF ifromJSON
799 eitherDecode = eitherFormatError . eitherDecodeWith jsonEOF ifromJSON
829 eitherFormatError = either (Left . uncurry formatError) Right
800 eitherFormatError = either (Left . uncurry formatError) Right
@@ -959,7 +930,7 @@ contextType = prependContext
959contextTag :: Text -> [String] -> Parser a -> Parser a
930contextTag :: Text -> [String] -> Parser a -> Parser a
960contextTag tagKey cnames = prependFailure
931contextTag tagKey cnames = prependFailure
961 ("expected Object with key \"" ++ unpack tagKey ++ "\"" ++
932 ("expected Object with key \"" ++ unpack tagKey ++ "\"" ++
962− " containing to one of " ++ show cnames ++ ", ")
933+ " containing one of " ++ show cnames ++ ", ")
964-- | Add the name of the constructor being parsed to a parser's error messages.
935-- | Add the name of the constructor being parsed to a parser's error messages.
965contextCons :: ConName -> TypeName -> Parser a -> Parser a
936contextCons :: ConName -> TypeName -> Parser a -> Parser a
@@ -1230,9 +1201,9 @@ class FromTaggedObject' arity f isRecord where
1230 :: String :* ConName :* TypeName :* Options :* FromArgs arity a
1201 :: String :* ConName :* TypeName :* Options :* FromArgs arity a
1231 -> Object -> Tagged isRecord (Parser (f a))
1202 -> Object -> Tagged isRecord (Parser (f a))
1233−instance (RecordFromJSON arity f) => FromTaggedObject' arity f True where
1204+instance (RecordFromJSON arity f, FieldNames f) => FromTaggedObject' arity f True where
1234 -- Records are unpacked in the tagged object
1205 -- Records are unpacked in the tagged object
1235− parseFromTaggedObject' (_ :* p) = Tagged . recordParseJSON p
1206+ parseFromTaggedObject' (_ :* p) = Tagged . recordParseJSON (True :* p)
1237instance (ConsFromJSON arity f) => FromTaggedObject' arity f False where
1208instance (ConsFromJSON arity f) => FromTaggedObject' arity f False where
1238 -- Nonnullary nonrecords are encoded in the contents field
1209 -- Nonnullary nonrecords are encoded in the contents field
@@ -1273,11 +1244,11 @@ instance OVERLAPPING_
1273 ) => ConsFromJSON' arity (S1 s a) True where
1244 ) => ConsFromJSON' arity (S1 s a) True where
1274 consParseJSON' p@(cname :* tname :* opts :* fargs)
1245 consParseJSON' p@(cname :* tname :* opts :* fargs)
1275 | unwrapUnaryRecords opts = Tagged . fmap M1 . gParseJSON opts fargs
1246 | unwrapUnaryRecords opts = Tagged . fmap M1 . gParseJSON opts fargs
1276− | otherwise = Tagged . withObject (showCons cname tname) (recordParseJSON p)
1247+ | otherwise = Tagged . withObject (showCons cname tname) (recordParseJSON (False :* p))
1278instance RecordFromJSON arity f => ConsFromJSON' arity f True where
1249instance RecordFromJSON arity f => ConsFromJSON' arity f True where
1279 consParseJSON' p@(cname :* tname :* _) =
1250 consParseJSON' p@(cname :* tname :* _) =
1280− Tagged . withObject (showCons cname tname) (recordParseJSON p)
1251+ Tagged . withObject (showCons cname tname) (recordParseJSON (False :* p))
1282instance OVERLAPPING_
1253instance OVERLAPPING_
1283 ConsFromJSON' arity U1 False where
1254 ConsFromJSON' arity U1 False where
@@ -1303,21 +1274,55 @@ instance (ProductFromJSON arity f, ProductSize f
1304--------------------------------------------------------------------------------
1275--------------------------------------------------------------------------------
1277+class FieldNames f where
1278+ fieldNames :: f a -> [Text] -> [Text]
1280+instance (FieldNames a, FieldNames b) => FieldNames (a :*: b) where
1282+ fieldNames (undefined :: a x) .
1283+ fieldNames (undefined :: b y)
1285+instance (Selector s) => FieldNames (S1 s f) where
1286+ fieldNames _ = (pack (selName (undefined :: M1 _i s _f _p)) :)
1306class RecordFromJSON arity f where
1288class RecordFromJSON arity f where
1307 recordParseJSON
1289 recordParseJSON
1290+ :: Bool :* ConName :* TypeName :* Options :* FromArgs arity a
1291+ -> Object -> Parser (f a)
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
1299+ knownFields :: H.HashMap Text ()
1300+ knownFields = H.fromList $ map (,()) $
1301+ fieldNames (undefined :: f a)
1302+ [pack (tagFieldName (sumEncoding opts)) | fromTaggedSum]
1304+ if not (rejectUnknownFields opts)
1305+ then \_ -> return ()
1306+ else \obj -> case H.keys (H.difference obj knownFields) of
1308+ unknownFields -> contextCons cname tname $
1309+ fail ("unknown fields: " ++ show unknownFields)
1311+class RecordFromJSON' arity f where
1308 :: ConName :* TypeName :* Options :* FromArgs arity a
1313 :: ConName :* TypeName :* Options :* FromArgs arity a
1309 -> Object -> Parser (f a)
1314 -> Object -> Parser (f a)
1311−instance ( RecordFromJSON arity a
1316+instance ( RecordFromJSON' arity a
1312− , RecordFromJSON arity b
1317+ , RecordFromJSON' arity b
1313− ) => RecordFromJSON arity (a :*: b) where
1318+ ) => RecordFromJSON' arity (a :*: b) where
1314− recordParseJSON p obj =
1319+ recordParseJSON' p obj =
1315− (:*:) <$> recordParseJSON p obj
1320+ (:*:) <$> recordParseJSON' p obj
1316− <*> recordParseJSON p obj
1321+ <*> recordParseJSON' p obj
1318instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
1323instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
1319− RecordFromJSON arity (S1 s a) where
1324+ RecordFromJSON' arity (S1 s a) where
1320− recordParseJSON (cname :* tname :* opts :* fargs) obj = do
1325+ recordParseJSON' (cname :* tname :* opts :* fargs) obj = do
1321 fv <- contextCons cname tname (obj .: label)
1326 fv <- contextCons cname tname (obj .: label)
1322 M1 <$> gParseJSON opts fargs fv <?> Key label
1327 M1 <$> gParseJSON opts fargs fv <?> Key label
@@ -1325,16 +1330,16 @@ instance OVERLAPPABLE_ (Selector s, GFromJSON arity a) =>
1325 sname = selName (undefined :: M1 _i s _f _p)
1330 sname = selName (undefined :: M1 _i s _f _p)
1327instance INCOHERENT_ (Selector s, FromJSON a) =>
1332instance INCOHERENT_ (Selector s, FromJSON a) =>
1328− RecordFromJSON arity (S1 s (K1 i (Maybe a))) where
1333+ RecordFromJSON' arity (S1 s (K1 i (Maybe a))) where
1329− recordParseJSON (_ :* _ :* opts :* _) obj = M1 . K1 <$> obj .:? pack label
1334+ recordParseJSON' (_ :* _ :* opts :* _) obj = M1 . K1 <$> obj .:? pack label
1331 label = fieldLabelModifier opts sname
1336 label = fieldLabelModifier opts sname
1332 sname = selName (undefined :: M1 _i s _f _p)
1337 sname = selName (undefined :: M1 _i s _f _p)
1334-- Parse an Option like a Maybe.
1339-- Parse an Option like a Maybe.
1335instance INCOHERENT_ (Selector s, FromJSON a) =>
1340instance INCOHERENT_ (Selector s, FromJSON a) =>
1336− RecordFromJSON arity (S1 s (K1 i (Semigroup.Option a))) where
1341+ RecordFromJSON' arity (S1 s (K1 i (Semigroup.Option a))) where
1337− recordParseJSON p obj = wrap <$> recordParseJSON p obj
1342+ recordParseJSON' p obj = wrap <$> recordParseJSON' p obj
1339 wrap :: S1 s (K1 i (Maybe a)) p -> S1 s (K1 i (Semigroup.Option a)) p
1344 wrap :: S1 s (K1 i (Maybe a)) p -> S1 s (K1 i (Semigroup.Option a)) p
1340 wrap (M1 (K1 a)) = M1 (K1 (Semigroup.Option a))
1345 wrap (M1 (K1 a)) = M1 (K1 (Semigroup.Option a))
@@ -1571,12 +1576,22 @@ instance FromJSONKey Float where
1571 _ -> Scientific.toRealFloat <$> parseScientificText t
1576 _ -> Scientific.toRealFloat <$> parseScientificText t
1573instance (FromJSON a, Integral a) => FromJSON (Ratio a) where
1578instance (FromJSON a, Integral a) => FromJSON (Ratio a) where
1579+ parseJSON (Number x)
1581+ , exp10 >= -1024 = return $! realToFrac x
1582+ | otherwise = prependContext "Ratio" $ fail msg
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
1574− parseJSON = withObject "Rational" $ \obj -> do
1589+ objParser = withObject "Rational" $ \obj -> do
1575− numerator <- obj .: "numerator"
1590+ numerator <- obj .: "numerator"
1576− denominator <- obj .: "denominator"
1591+ denominator <- obj .: "denominator"
1577− if denominator == 0
1592+ if denominator == 0
1578− then fail "Ratio denominator was 0"
1593+ then fail "Ratio denominator was 0"
1579− else pure $ numerator % denominator
1594+ else pure $ numerator % denominator
1580 {-# INLINE parseJSON #-}
1595 {-# INLINE parseJSON #-}
1582-- | This instance includes a bounds check to prevent maliciously
1597-- | This instance includes a bounds check to prevent maliciously
@@ -1991,7 +2006,6 @@ instance FromJSON DotNetTime where
1991-- primitive
2006-- primitive
1992-------------------------------------------------------------------------------
2007-------------------------------------------------------------------------------
1994−#if MIN_VERSION_base(4,7,0)
1995instance FromJSON a => FromJSON (PM.Array a) where
2009instance FromJSON a => FromJSON (PM.Array a) where
1996 -- note: we could do better than this if vector exposed the data
2010 -- note: we could do better than this if vector exposed the data
1997 -- constructor in Data.Vector.
2011 -- constructor in Data.Vector.
@@ -2009,7 +2023,6 @@ instance (PM.PrimUnlifted a,FromJSON a) => FromJSON (PM.UnliftedArray a) where
2009 parseJSON = fmap Exts.fromList . parseJSON
2023 parseJSON = fmap Exts.fromList . parseJSON
2014-------------------------------------------------------------------------------
2027-------------------------------------------------------------------------------