@@ -1,30 +1,27 @@
1−{-# LANGUAGE BangPatterns #-}
2−{-# LANGUAGE CPP #-}
3−{-# LANGUAGE DataKinds #-}
4−{-# LANGUAGE DefaultSignatures #-}
5−{-# LANGUAGE FlexibleContexts #-}
6−{-# LANGUAGE FlexibleInstances #-}
7−{-# LANGUAGE GADTs #-}
8−{-# LANGUAGE MultiParamTypeClasses #-}
9−{-# LANGUAGE NamedFieldPuns #-}
10−{-# LANGUAGE OverloadedStrings #-}
11−{-# LANGUAGE PatternGuards #-}
12−{-# LANGUAGE RecordWildCards #-}
13−{-# LANGUAGE ScopedTypeVariables #-}
14−{-# LANGUAGE TypeOperators #-}
15−{-# LANGUAGE TypeSynonymInstances #-}
16−{-# LANGUAGE UndecidableInstances #-}
17−
18−#if __GLASGOW_HASKELL__ >= 706
19−{-# LANGUAGE PolyKinds #-}
20−#endif
1+{-# LANGUAGE CPP #-}
2+{-# LANGUAGE DefaultSignatures #-}
3+{-# LANGUAGE EmptyDataDecls #-}
4+{-# LANGUAGE FlexibleContexts #-}
5+{-# LANGUAGE FlexibleInstances #-}
6+{-# LANGUAGE FunctionalDependencies #-}
7+{-# LANGUAGE GADTs #-}
8+{-# LANGUAGE NoImplicitPrelude #-}
9+{-# LANGUAGE OverloadedStrings #-}
10+{-# LANGUAGE PatternGuards #-}
11+{-# LANGUAGE PolyKinds #-}
12+{-# LANGUAGE RecordWildCards #-}
13+{-# LANGUAGE ScopedTypeVariables #-}
14+{-# LANGUAGE TypeOperators #-}
15+{-# LANGUAGE UndecidableInstances #-}
2116
2217#include "overlapping-compat.h"
18+#include "incoherent-compat.h"
2319
2420-- TODO: Drop this when we remove support for Data.Attoparsec.Number
2521{-# OPTIONS_GHC -fno-warn-deprecations #-}
2622
27−module Data.Aeson.Types.ToJSON (
23+module Data.Aeson.Types.ToJSON
24+ (
2825 -- * Core JSON classes
2926 ToJSON(..)
3027 -- * Liftings to unary and binary type constructors
@@ -36,7 +33,6 @@ module Data.Aeson.Types.ToJSON (
3633 , toEncoding2
3734 -- * Generic JSON classes
3835 , GToJSON(..)
39− , GToEncoding(..)
4036 , ToArgs(..)
4137 , genericToJSON
4238 , genericToEncoding
@@ -47,87 +43,101 @@ module Data.Aeson.Types.ToJSON (
4743 , ToJSONKeyFunction(..)
4844 , toJSONKeyText
4945 , contramapToJSONKeyFunction
46+
47+ , GToJSONKey()
48+ , genericToJSONKey
49+
5050 -- * Object key-value pairs
5151 , KeyValue(..)
52+ , KeyValuePair(..)
53+ , FromPairs(..)
5254 -- * Functions needed for documentation
5355 -- * Encoding functions
5456 , listEncoding
5557 , listValue
5658 ) where
5759
58−import Prelude ()
5960import Prelude.Compat
6061
61−import Data.Aeson.Encoding.Internal (Encoding, Encoding', Series, dict,
62− emptyArray_, tuple, (>*<), (><))
62+import Control.Applicative (Const(..))
63+import Control.Monad.ST (ST)
64+import Data.Aeson.Encoding (Encoding, Encoding', Series, dict, emptyArray_)
65+import Data.Aeson.Encoding.Internal ((>*<))
6366import Data.Aeson.Internal.Functions (mapHashKeyVal, mapKeyVal)
64−import Data.Aeson.Types.Generic
67+import Data.Aeson.Types.Generic (AllNullary, False, IsRecord, One, ProductSize, Tagged2(..), True, Zero, productSize)
6568import Data.Aeson.Types.Internal
66−
67−-- We need internal here for generic deriving
68−import qualified Data.Aeson.Encoding.Internal as E
69−
70−import Control.Applicative (Const (..))
71−import Control.Monad.ST (ST)
72−import Data.Attoparsec.Number (Number (..))
73−import Data.Bits (unsafeShiftR)
74−import Data.DList (DList)
75−import Data.Fixed (Fixed, HasResolution)
76−import Data.Foldable (toList)
77−import Data.Functor.Compose (Compose (..))
78−import Data.Functor.Identity (Identity (..))
79−import Data.Functor.Product (Product (..))
80−import Data.Functor.Sum (Sum (..))
81−import Data.Int (Int16, Int32, Int64, Int8)
82−import Data.List (intersperse)
83−import Data.List.NonEmpty (NonEmpty (..))
84−import Data.Monoid (Dual (..), First (..), Last (..), (<>))
85−import Data.Proxy (Proxy (..))
86−import Data.Ratio (Ratio, denominator, numerator)
87−import Data.Scientific (Scientific)
88−import Data.Tagged (Tagged (..))
89−import Data.Text (Text, pack)
90−import Data.Time (Day, LocalTime, NominalDiffTime, TimeOfDay,
91− UTCTime, ZonedTime)
92−import Data.Time.Format (FormatTime, formatTime)
93−import Data.Time.Locale.Compat (defaultTimeLocale)
94−import Data.Vector (Vector)
95−import Data.Version (Version, showVersion)
96−import Data.Word (Word16, Word32, Word64, Word8)
97−import Foreign.Storable (Storable)
69+import Data.Attoparsec.Number (Number(..))
70+import Data.Bits (unsafeShiftR)
71+import Data.DList (DList)
72+import Data.Fixed (Fixed, HasResolution, Nano)
73+import Data.Foldable (toList)
74+import Data.Functor.Compose (Compose(..))
75+import Data.Functor.Contravariant (Contravariant (..))
76+import Data.Functor.Identity (Identity(..))
77+import Data.Functor.Product (Product(..))
78+import Data.Functor.Sum (Sum(..))
79+import Data.Int (Int16, Int32, Int64, Int8)
80+import Data.List (intersperse)
81+import Data.List.NonEmpty (NonEmpty(..))
82+import Data.Semigroup ((<>))
83+import Data.Proxy (Proxy(..))
84+import Data.Ratio (Ratio, denominator, numerator)
85+import Data.Scientific (Scientific)
86+import Data.Tagged (Tagged(..))
87+import Data.Text (Text, pack)
88+import Data.Time (Day, DiffTime, LocalTime, NominalDiffTime, TimeOfDay, UTCTime, ZonedTime)
89+import Data.Time.Calendar.Compat (CalendarDiffDays (..), DayOfWeek (..))
90+import Data.Time.LocalTime.Compat (CalendarDiffTime (..))
91+import Data.Time.Clock.System.Compat (SystemTime (..))
92+import Data.Time.Format.Compat (FormatTime, formatTime, defaultTimeLocale)
93+import Data.Vector (Vector)
94+import Data.Version (Version, showVersion)
95+import Data.Void (Void, absurd)
96+import Data.Word (Word16, Word32, Word64, Word8)
97+import Foreign.Storable (Storable)
98+import Foreign.C.Types (CTime (..))
9899import GHC.Generics
99−import Numeric.Natural (Natural)
100−
101−import qualified Data.ByteString as S
102−import qualified Data.ByteString.Lazy as L
103−import qualified Data.DList as DList
104−import qualified Data.HashMap.Strict as H
105−import qualified Data.HashSet as HashSet
106−import qualified Data.IntMap as IntMap
107−import qualified Data.IntSet as IntSet
108−import qualified Data.List.NonEmpty as NE
109−import qualified Data.Map as M
110−import qualified Data.Scientific as Scientific
111−import qualified Data.Sequence as Seq
112−import qualified Data.Set as Set
113−import qualified Data.Text as T
114−import qualified Data.Text.Encoding as T
115−import qualified Data.Text.Lazy as LT
116−import qualified Data.Tree as Tree
117−import qualified Data.Vector as V
118−import qualified Data.Vector.Generic as VG
119−import qualified Data.Vector.Mutable as VM
100+import Numeric.Natural (Natural)
101+import qualified Data.Aeson.Encoding as E
102+import qualified Data.Aeson.Encoding.Internal as E (InArray, comma, econcat, retagEncoding)
103+import qualified Data.ByteString.Lazy as L
104+import qualified Data.DList as DList
105+import qualified Data.HashMap.Strict as H
106+import qualified Data.HashSet as HashSet
107+import qualified Data.IntMap as IntMap
108+import qualified Data.IntSet as IntSet
109+import qualified Data.List.NonEmpty as NE
110+import qualified Data.Map as M
111+import qualified Data.Monoid as Monoid
112+import qualified Data.Scientific as Scientific
113+import qualified Data.Semigroup as Semigroup
114+import qualified Data.Sequence as Seq
115+import qualified Data.Set as Set
116+import qualified Data.Text as T
117+import qualified Data.Text.Encoding as T
118+import qualified Data.Text.Lazy as LT
119+import qualified Data.Tree as Tree
120+import qualified Data.UUID.Types as UUID
121+import qualified Data.Vector as V
122+import qualified Data.Vector.Generic as VG
123+import qualified Data.Vector.Mutable as VM
120124import qualified Data.Vector.Primitive as VP
121−import qualified Data.Vector.Storable as VS
122−import qualified Data.Vector.Unboxed as VU
125+import qualified Data.Vector.Storable as VS
126+import qualified Data.Vector.Unboxed as VU
127+
128+import qualified Data.Aeson.Encoding.Builder as EB
129+import qualified Data.ByteString.Builder as B
123130
124−#if !(MIN_VERSION_bytestring(0,10,0))
125−import Foreign.ForeignPtr (withForeignPtr)
126−import Foreign.Marshal.Utils (copyBytes)
127−import Foreign.Ptr (plusPtr)
131+import qualified GHC.Exts as Exts
132+import qualified Data.Primitive.Array as PM
133+import qualified Data.Primitive.SmallArray as PM
134+import qualified Data.Primitive.Types as PM
128135
129−import qualified Data.ByteString.Internal as S
130−import qualified Data.ByteString.Lazy.Internal as L
136+#if MIN_VERSION_primitive(0,6,4)
137+#if !MIN_VERSION_primitive(0,7,0)
138+import qualified Data.Primitive.UnliftedArray as PM
139+#endif
140+import qualified Data.Primitive.PrimArray as PM
131141#endif
132142
133143toJSONPair :: (a -> Value) -> (b -> Value) -> (a, b) -> Value
@@ -146,19 +156,16 @@ realFloatToJSON d
146156
147157-- | Class of generic representation types that can be converted to
148158-- JSON.
149−class GToJSON arity f where
159+class GToJSON enc arity f where
150160 -- | This method (applied to 'defaultOptions') is used as the
151− -- default generic implementation of 'toJSON' (if the @arity@ is 'Zero')
152− -- or 'liftToJSON' (if the @arity@ is 'One').
153− gToJSON :: Options -> ToArgs Value arity a -> f a -> Value
154−
155−-- | Class of generic representation types that can be converted to
156−-- a JSON 'Encoding'.
157−class GToEncoding arity f where
158− -- | This method (applied to 'defaultOptions') can be used as the
159− -- default generic implementation of 'toEncoding' (if the @arity@ is 'Zero')
160− -- or 'liftToEncoding' (if the @arity@ is 'One').
161− gToEncoding :: Options -> ToArgs Encoding arity a -> f a -> Encoding
161+ -- default generic implementation of 'toJSON'
162+ -- (with @enc ~ 'Value'@ and @arity ~ 'Zero'@)
163+ -- and 'liftToJSON' (if the @arity@ is 'One').
164+ --
165+ -- It also provides a generic implementation of 'toEncoding'
166+ -- (with @enc ~ 'Encoding'@ and @arity ~ 'Zero'@)
167+ -- and 'liftToEncoding' (if the @arity@ is 'One').
168+ gToJSON :: Options -> ToArgs enc arity a -> f a -> enc
162169
163170-- | A 'ToArgs' value either stores nothing (for 'ToJSON') or it stores the two
164171-- function arguments that encode occurrences of the type parameter (for
@@ -170,14 +177,14 @@ data ToArgs res arity a where
170177-- | A configurable generic JSON creator. This function applied to
171178-- 'defaultOptions' is used as the default for 'toJSON' when the type
172179-- is an instance of 'Generic'.
173−genericToJSON :: (Generic a, GToJSON Zero (Rep a))
180+genericToJSON :: (Generic a, GToJSON Value Zero (Rep a))
174181 => Options -> a -> Value
175182genericToJSON opts = gToJSON opts NoToArgs . from
176183
177184-- | A configurable generic JSON creator. This function applied to
178185-- 'defaultOptions' is used as the default for 'liftToJSON' when the type
179186-- is an instance of 'Generic1'.
180−genericLiftToJSON :: (Generic1 f, GToJSON One (Rep1 f))
187+genericLiftToJSON :: (Generic1 f, GToJSON Value One (Rep1 f))
181188 => Options -> (a -> Value) -> ([a] -> Value)
182189 -> f a -> Value
183190genericLiftToJSON opts tj tjl = gToJSON opts (To1Args tj tjl) . from1
@@ -185,17 +192,17 @@ genericLiftToJSON opts tj tjl = gToJSON opts (To1Args tj tjl) . from1
185192-- | A configurable generic JSON encoder. This function applied to
186193-- 'defaultOptions' is used as the default for 'toEncoding' when the type
187194-- is an instance of 'Generic'.
188−genericToEncoding :: (Generic a, GToEncoding Zero (Rep a))
195+genericToEncoding :: (Generic a, GToJSON Encoding Zero (Rep a))
189196 => Options -> a -> Encoding
190−genericToEncoding opts = gToEncoding opts NoToArgs . from
197+genericToEncoding opts = gToJSON opts NoToArgs . from
191198
192199-- | A configurable generic JSON encoder. This function applied to
193200-- 'defaultOptions' is used as the default for 'liftToEncoding' when the type
194201-- is an instance of 'Generic1'.
195−genericLiftToEncoding :: (Generic1 f, GToEncoding One (Rep1 f))
202+genericLiftToEncoding :: (Generic1 f, GToJSON Encoding One (Rep1 f))
196203 => Options -> (a -> Encoding) -> ([a] -> Encoding)
197204 -> f a -> Encoding
198−genericLiftToEncoding opts te tel = gToEncoding opts (To1Args te tel) . from1
205+genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
199206
200207-------------------------------------------------------------------------------
201208-- Class
@@ -203,6 +210,9 @@ genericLiftToEncoding opts te tel = gToEncoding opts (To1Args te tel) . from1
203210
204211-- | A type that can be converted to JSON.
205212--
213+-- Instances in general /must/ specify 'toJSON' and /should/ (but don't need
214+-- to) specify 'toEncoding'.
215+--
206216-- An example type and instance:
207217--
208218-- @
@@ -211,10 +221,10 @@ genericLiftToEncoding opts te tel = gToEncoding opts (To1Args te tel) . from1
211221--
212222-- data Coord = Coord { x :: Double, y :: Double }
213223--
214−-- instance ToJSON Coord where
215−-- toJSON (Coord x y) = 'object' [\"x\" '.=' x, \"y\" '.=' y]
224+-- instance 'ToJSON' Coord where
225+-- 'toJSON' (Coord x y) = 'object' [\"x\" '.=' x, \"y\" '.=' y]
216226--
217−-- toEncoding (Coord x y) = 'pairs' (\"x\" '.=' x '<>' \"y\" '.=' y)
227+-- 'toEncoding' (Coord x y) = 'pairs' (\"x\" '.=' x '<>' \"y\" '.=' y)
218228-- @
219229--
220230-- Instead of manually writing your 'ToJSON' instance, there are two options
@@ -222,17 +232,15 @@ genericLiftToEncoding opts te tel = gToEncoding opts (To1Args te tel) . from1
222232--
223233-- * "Data.Aeson.TH" provides Template Haskell functions which will derive an
224234-- instance at compile time. The generated instance is optimized for your type
225−-- so will probably be more efficient than the following two options:
235+-- so it will probably be more efficient than the following option.
226236--
227237-- * The compiler can provide a default generic implementation for
228238-- 'toJSON'.
229239--
230240-- To use the second, simply add a @deriving 'Generic'@ clause to your
231−-- datatype and declare a 'ToJSON' instance for your datatype without giving
232−-- definitions for 'toJSON' or 'toEncoding'.
233−--
234−-- For example, the previous example can be simplified to a more
235−-- minimal instance:
241+-- datatype and declare a 'ToJSON' instance. If you require nothing other than
242+-- 'defaultOptions', it is sufficient to write (and this is the only
243+-- alternative where the default 'toJSON' implementation is sufficient):
236244--
237245-- @
238246-- {-\# LANGUAGE DeriveGeneric \#-}
@@ -241,35 +249,46 @@ genericLiftToEncoding opts te tel = gToEncoding opts (To1Args te tel) . from1
241249--
242250-- data Coord = Coord { x :: Double, y :: Double } deriving 'Generic'
243251--
244−-- instance ToJSON Coord where
245−-- toEncoding = 'genericToEncoding' 'defaultOptions'
252+-- instance 'ToJSON' Coord where
253+-- 'toEncoding' = 'genericToEncoding' 'defaultOptions'
246254-- @
247255--
248−-- Why do we provide an implementation for 'toEncoding' here? The
249−-- 'toEncoding' function is a relatively new addition to this class.
250−-- To allow users of older versions of this library to upgrade without
251−-- having to edit all of their instances or encounter surprising
252−-- incompatibilities, the default implementation of 'toEncoding' uses
253−-- 'toJSON'. This produces correct results, but since it performs an
254−-- intermediate conversion to a 'Value', it will be less efficient
255−-- than directly emitting an 'Encoding'. Our one-liner definition of
256−-- 'toEncoding' above bypasses the intermediate 'Value'.
257−--
258−-- If @DefaultSignatures@ doesn't give exactly the results you want,
259−-- you can customize the generic encoding with only a tiny amount of
260−-- effort, using 'genericToJSON' and 'genericToEncoding' with your
261−-- preferred 'Options':
256+-- If on the other hand you wish to customize the generic decoding, you have
257+-- to implement both methods:
262258--
263259-- @
264−-- instance ToJSON Coord where
265−-- toJSON = 'genericToJSON' 'defaultOptions'
266−-- toEncoding = 'genericToEncoding' 'defaultOptions'
260+-- customOptions = 'defaultOptions'
261+-- { 'fieldLabelModifier' = 'map' 'Data.Char.toUpper'
262+-- }
263+--
264+-- instance 'ToJSON' Coord where
265+-- 'toJSON' = 'genericToJSON' customOptions
266+-- 'toEncoding' = 'genericToEncoding' customOptions
267267-- @
268+--
269+-- Previous versions of this library only had the 'toJSON' method. Adding
270+-- 'toEncoding' had two reasons:
271+--
272+-- 1. toEncoding is more efficient for the common case that the output of
273+-- 'toJSON' is directly serialized to a @ByteString@.
274+-- Further, expressing either method in terms of the other would be
275+-- non-optimal.
276+--
277+-- 2. The choice of defaults allows a smooth transition for existing users:
278+-- Existing instances that do not define 'toEncoding' still
279+-- compile and have the correct semantics. This is ensured by making
280+-- the default implementation of 'toEncoding' use 'toJSON'. This produces
281+-- correct results, but since it performs an intermediate conversion to a
282+-- 'Value', it will be less efficient than directly emitting an 'Encoding'.
283+-- (this also means that specifying nothing more than
284+-- @instance ToJSON Coord@ would be sufficient as a generically decoding
285+-- instance, but there probably exists no good reason to not specify
286+-- 'toEncoding' in new instances.)
268287class ToJSON a where
269288 -- | Convert a Haskell value to a JSON-friendly intermediate type.
270289 toJSON :: a -> Value
271290
272− default toJSON :: (Generic a, GToJSON Zero (Rep a)) => a -> Value
291+ default toJSON :: (Generic a, GToJSON Value Zero (Rep a)) => a -> Value
273292 toJSON = genericToJSON defaultOptions
274293
275294 -- | Encode a Haskell value as JSON.
@@ -286,8 +305,8 @@ class ToJSON a where
286305 -- extension, and then have GHC generate a method body as follows.
287306 --
288307 -- @
289− -- instance ToJSON Coord where
290− -- toEncoding = 'genericToEncoding' 'defaultOptions'
308+ -- instance 'ToJSON' Coord where
309+ -- 'toEncoding' = 'genericToEncoding' 'defaultOptions'
291310 -- @
292311
293312 toEncoding :: a -> Encoding
@@ -319,6 +338,13 @@ instance KeyValue Pair where
319338 name .= value = (name, toJSON value)
320339 {-# INLINE (.=) #-}
321340
341+-- | Constructs a singleton 'H.HashMap'. For calling functions that
342+-- demand an 'Object' for constructing objects. To be used in
343+-- conjunction with 'mconcat'. Prefer to use 'object' where possible.
344+instance KeyValue Object where
345+ name .= value = H.singleton name (toJSON value)
346+ {-# INLINE (.=) #-}
347+
322348-------------------------------------------------------------------------------
323349-- Classes and types for map keys
324350-------------------------------------------------------------------------------
@@ -376,7 +402,7 @@ instance KeyValue Pair where
376402-- newtype wrapper around 'Text'. The recommended approach is to use
377403-- generalized newtype deriving:
378404--
379−-- > newtype RecordId = RecordId { getRecordId :: Text}
405+-- > newtype RecordId = RecordId { getRecordId :: Text }
380406-- > deriving (Eq,Ord,ToJSONKey)
381407--
382408-- Then we may write:
@@ -391,8 +417,18 @@ instance KeyValue Pair where
391417--
392418-- It is possible to get the 'ToJSONKey' instance for free as we did
393419-- with 'Foo'. However, in this case, we have a natural way to go to
394−-- and from 'Text' that does not require any escape sequences. So, in
395−-- this example, 'ToJSONKeyText' will be used instead of 'ToJSONKeyValue'.
420+-- and from 'Text' that does not require any escape sequences. So
421+-- 'ToJSONKeyText' can be used instead of 'ToJSONKeyValue' to encode maps
422+-- as objects instead of arrays of pairs. This instance may be
423+-- implemented using generics as follows:
424+--
425+-- @
426+-- instance 'ToJSONKey' Color where
427+-- 'toJSONKey' = 'genericToJSONKey' 'defaultJSONKeyOptions'
428+-- @
429+--
430+-- === __Low-level implementations__
431+--
396432-- The 'Show' instance can be used to help write 'ToJSONKey':
397433--
398434-- > instance ToJSONKey Color where
@@ -467,16 +503,42 @@ toJSONKeyTextEnc e = ToJSONKeyText tot e
467503 -- TODO: dropAround is also used in stringEncoding, which is unfortunate atm
468504 tot = T.dropAround (== '"')
469505 . T.decodeLatin1
470− . lazyToStrictByteString
506+ . L.toStrict
471507 . E.encodingToLazyByteString
472508 . e
473509
510+instance Contravariant ToJSONKeyFunction where
511+ contramap = contramapToJSONKeyFunction
512+
474513-- | Contravariant map, as 'ToJSONKeyFunction' is a contravariant functor.
475514contramapToJSONKeyFunction :: (b -> a) -> ToJSONKeyFunction a -> ToJSONKeyFunction b
476515contramapToJSONKeyFunction h x = case x of
477516 ToJSONKeyText f g -> ToJSONKeyText (f . h) (g . h)
478517 ToJSONKeyValue f g -> ToJSONKeyValue (f . h) (g . h)
479518
519+-- 'toJSONKey' for 'Generic' types.
520+-- Deriving is supported for enumeration types, i.e. the sums of nullary
521+-- constructors. The names of constructors will be used as keys for JSON
522+-- objects.
523+--
524+-- See also 'genericFromJSONKey'.
525+--
526+-- === __Example__
527+--
528+-- @
529+-- data Color = Red | Green | Blue
530+-- deriving 'Generic'
531+--
532+-- instance 'ToJSONKey' Color where
533+-- 'toJSONKey' = 'genericToJSONKey' 'defaultJSONKeyOptions'
534+-- @
535+genericToJSONKey :: (Generic a, GToJSONKey (Rep a))
536+ => JSONKeyOptions -> ToJSONKeyFunction a
537+genericToJSONKey opts = toJSONKeyText (pack . keyModifier opts . getConName . from)
538+
539+class GetConName f => GToJSONKey f
540+instance GetConName f => GToJSONKey f
541+
480542-------------------------------------------------------------------------------
481543-- Lifings of FromJSON and ToJSON to unary and binary type constructors
482544-------------------------------------------------------------------------------
@@ -489,7 +551,7 @@ contramapToJSONKeyFunction h x = case x of
489551--
490552-- * "Data.Aeson.TH" provides Template Haskell functions which will derive an
491553-- instance at compile time. The generated instance is optimized for your type
492−-- so will probably be more efficient than the following two options:
554+-- so it will probably be more efficient than the following option.
493555--
494556-- * The compiler can provide a default generic implementation for
495557-- 'toJSON1'.
@@ -507,23 +569,29 @@ contramapToJSONKeyFunction h x = case x of
507569--
508570-- data Pair = Pair { pairFst :: a, pairSnd :: b } deriving 'Generic1'
509571--
510−-- instance ToJSON a => ToJSON1 (Pair a)
572+-- instance 'ToJSON' a => 'ToJSON1' (Pair a)
511573-- @
512574--
513−-- If @DefaultSignatures@ doesn't give exactly the results you want,
575+-- If the default implementation doesn't give exactly the results you want,
514576-- you can customize the generic encoding with only a tiny amount of
515577-- effort, using 'genericLiftToJSON' and 'genericLiftToEncoding' with
516578-- your preferred 'Options':
517579--
518580-- @
519−-- instance ToJSON a => ToJSON1 (Pair a) where
520−-- liftToJSON = 'genericLiftToJSON' 'defaultOptions'
521−-- liftToEncoding = 'genericLiftToEncoding' 'defaultOptions'
581+-- customOptions = 'defaultOptions'
582+-- { 'fieldLabelModifier' = 'map' 'Data.Char.toUpper'
583+-- }
584+--
585+-- instance 'ToJSON' a => 'ToJSON1' (Pair a) where
586+-- 'liftToJSON' = 'genericLiftToJSON' customOptions
587+-- 'liftToEncoding' = 'genericLiftToEncoding' customOptions
522588-- @
589+--
590+-- See also 'ToJSON'.
523591class ToJSON1 f where
524592 liftToJSON :: (a -> Value) -> ([a] -> Value) -> f a -> Value
525593
526− default liftToJSON :: (Generic1 f, GToJSON One (Rep1 f))
594+ default liftToJSON :: (Generic1 f, GToJSON Value One (Rep1 f))
527595 => (a -> Value) -> ([a] -> Value) -> f a -> Value
528596 liftToJSON = genericLiftToJSON defaultOptions
529597
@@ -532,7 +600,7 @@ class ToJSON1 f where
532600
533601 liftToEncoding :: (a -> Encoding) -> ([a] -> Encoding) -> f a -> Encoding
534602
535− default liftToEncoding :: (Generic1 f, GToEncoding One (Rep1 f))
603+ default liftToEncoding :: (Generic1 f, GToJSON Encoding One (Rep1 f))
536604 => (a -> Encoding) -> ([a] -> Encoding)
537605 -> f a -> Encoding
538606 liftToEncoding = genericLiftToEncoding defaultOptions
@@ -586,7 +654,7 @@ toEncoding2 = liftToEncoding2 toEncoding toEncodingList toEncoding toEncodingLis
586654-- @
587655-- newtype F a = F [a]
588656--
589−-- -- This instance encodes String as an array of chars
657+-- -- This instance encodes 'String' as an array of chars
590658-- instance 'ToJSON1' F where
591659-- 'liftToJSON' tj _ (F xs) = 'liftToJSON' tj ('listValue' tj) xs
592660-- 'liftToEncoding' te _ (F xs) = 'liftToEncoding' te ('listEncoding' te) xs
@@ -617,6 +685,11 @@ instance ToJSON1 [] where
617685 {-# INLINE liftToEncoding #-}
618686
619687instance (ToJSON a) => ToJSON [a] where
688+ {-# SPECIALIZE instance ToJSON String #-}
689+ {-# SPECIALIZE instance ToJSON [String] #-}
690+ {-# SPECIALIZE instance ToJSON [Array] #-}
691+ {-# SPECIALIZE instance ToJSON [Object] #-}
692+
620693 toJSON = toJSON1
621694 {-# INLINE toJSON #-}
622695
@@ -627,39 +700,80 @@ instance (ToJSON a) => ToJSON [a] where
627700-- Generic toJSON / toEncoding
628701-------------------------------------------------------------------------------
629702
630−--------------------------------------------------------------------------------
631−-- Generic toJSON
632−
633−instance OVERLAPPABLE_ (GToJSON arity a) => GToJSON arity (M1 i c a) where
703+instance OVERLAPPABLE_ (GToJSON enc arity a) => GToJSON enc arity (M1 i c a) where
634704 -- Meta-information, which is not handled elsewhere, is ignored:
635705 gToJSON opts targs = gToJSON opts targs . unM1
706+ {-# INLINE gToJSON #-}
636707
637−instance (ToJSON a) => GToJSON arity (K1 i a) where
638− -- Constant values are encoded using their ToJSON instance:
639− gToJSON _opts _ = toJSON . unK1
640−
641−instance GToJSON One Par1 where
708+instance GToJSON enc One Par1 where
642709 -- Direct occurrences of the last type parameter are encoded with the
643710 -- function passed in as an argument:
644711 gToJSON _opts (To1Args tj _) = tj . unPar1
712+ {-# INLINE gToJSON #-}
713+
714+instance ( ConsToJSON enc arity a
715+ , AllNullary (C1 c a) allNullary
716+ , SumToJSON enc arity (C1 c a) allNullary
717+ ) => GToJSON enc arity (D1 d (C1 c a)) where
718+ -- The option 'tagSingleConstructors' determines whether to wrap
719+ -- a single-constructor type.
720+ gToJSON opts targs
721+ | tagSingleConstructors opts = (unTagged :: Tagged allNullary enc -> enc)
722+ . sumToJSON opts targs
723+ . unM1
724+ | otherwise = consToJSON opts targs . unM1 . unM1
725+ {-# INLINE gToJSON #-}
726+
727+instance (ConsToJSON enc arity a) => GToJSON enc arity (C1 c a) where
728+ -- Constructors need to be encoded differently depending on whether they're
729+ -- a record or not. This distinction is made by 'consToJSON':
730+ gToJSON opts targs = consToJSON opts targs . unM1
731+ {-# INLINE gToJSON #-}
645732
646−instance (ToJSON1 f) => GToJSON One (Rec1 f) where
733+instance ( AllNullary (a :+: b) allNullary
734+ , SumToJSON enc arity (a :+: b) allNullary
735+ ) => GToJSON enc arity (a :+: b)
736+ where
737+ -- If all constructors of a sum datatype are nullary and the
738+ -- 'allNullaryToStringTag' option is set they are encoded to
739+ -- strings. This distinction is made by 'sumToJSON':
740+ gToJSON opts targs = (unTagged :: Tagged allNullary enc -> enc)
741+ . sumToJSON opts targs
742+ {-# INLINE gToJSON #-}
743+
744+--------------------------------------------------------------------------------
745+-- Generic toJSON
746+
747+-- Note: Refactoring 'ToJSON a' to 'ToJSON enc a' (and 'ToJSON1' similarly) is
748+-- possible but makes error messages a bit harder to understand for missing
749+-- instances.
750+
751+instance GToJSON Value arity V1 where
752+ -- Empty values do not exist, which makes the job of formatting them
753+ -- rather easy:
754+ gToJSON _ _ x = x `seq` error "case: V1"
755+ {-# INLINE gToJSON #-}
756+
757+instance ToJSON a => GToJSON Value arity (K1 i a) where
758+ -- Constant values are encoded using their ToJSON instance:
759+ gToJSON _opts _ = toJSON . unK1
760+ {-# INLINE gToJSON #-}
761+
762+instance ToJSON1 f => GToJSON Value One (Rec1 f) where
647763 -- Recursive occurrences of the last type parameter are encoded using their
648764 -- ToJSON1 instance:
649765 gToJSON _opts (To1Args tj tjl) = liftToJSON tj tjl . unRec1
766+ {-# INLINE gToJSON #-}
650767
651−instance GToJSON arity U1 where
768+instance GToJSON Value arity U1 where
652769 -- Empty constructors are encoded to an empty array:
653770 gToJSON _opts _ _ = emptyArray
654−
655−instance (ConsToJSON arity a) => GToJSON arity (C1 c a) where
656− -- Constructors need to be encoded differently depending on whether they're
657− -- a record or not. This distinction is made by 'consToJSON':
658− gToJSON opts targs = consToJSON opts targs . unM1
771+ {-# INLINE gToJSON #-}
659772
660773instance ( WriteProduct arity a, WriteProduct arity b
661774 , ProductSize a, ProductSize b
662− ) => GToJSON arity (a :*: b) where
775+ ) => GToJSON Value arity (a :*: b)
776+ where
663777 -- Products are encoded to an array. Here we allocate a mutable vector of
664778 -- the same size as the product and write the product's elements to it using
665779 -- 'writeProduct':
@@ -671,238 +785,175 @@ instance ( WriteProduct arity a, WriteProduct arity b
671785 where
672786 lenProduct = (unTagged2 :: Tagged2 (a :*: b) Int -> Int)
673787 productSize
788+ {-# INLINE gToJSON #-}
674789
675−instance ( AllNullary (a :+: b) allNullary
676− , SumToJSON arity (a :+: b) allNullary
677− ) => GToJSON arity (a :+: b) where
678− -- If all constructors of a sum datatype are nullary and the
679− -- 'allNullaryToStringTag' option is set they are encoded to
680− -- strings. This distinction is made by 'sumToJSON':
681− gToJSON opts targs = (unTagged :: Tagged allNullary Value -> Value)
682− . sumToJSON opts targs
683−
684−instance (ToJSON1 f, GToJSON One g) => GToJSON One (f :.: g) where
790+instance ( ToJSON1 f
791+ , GToJSON Value One g
792+ ) => GToJSON Value One (f :.: g)
793+ where
685794 -- If an occurrence of the last type parameter is nested inside two
686795 -- composed types, it is encoded by using the outermost type's ToJSON1
687796 -- instance to generically encode the innermost type:
688797 gToJSON opts targs =
689798 let gtj = gToJSON opts targs in
690799 liftToJSON gtj (listValue gtj) . unComp1
800+ {-# INLINE gToJSON #-}
691801
692802--------------------------------------------------------------------------------
693803-- Generic toEncoding
694804
695−instance OVERLAPPABLE_ (GToEncoding arity a) => GToEncoding arity (M1 i c a) where
696− -- Meta-information, which is not handled elsewhere, is ignored:
697− gToEncoding opts targs = gToEncoding opts targs . unM1
698−
699−instance (ToJSON a) => GToEncoding arity (K1 i a) where
805+instance ToJSON a => GToJSON Encoding arity (K1 i a) where
700806 -- Constant values are encoded using their ToJSON instance:
701− gToEncoding _opts _ = toEncoding . unK1
807+ gToJSON _opts _ = toEncoding . unK1
808+ {-# INLINE gToJSON #-}
702809
703−instance GToEncoding One Par1 where
704− -- Direct occurrences of the last type parameter are encoded with the
705− -- function passed in as an argument:
706− gToEncoding _opts (To1Args te _) = te . unPar1
707−
708−instance (ToJSON1 f) => GToEncoding One (Rec1 f) where
810+instance ToJSON1 f => GToJSON Encoding One (Rec1 f) where
709811 -- Recursive occurrences of the last type parameter are encoded using their
710812 -- ToEncoding1 instance:
711− gToEncoding _opts (To1Args te tel) = liftToEncoding te tel . unRec1
813+ gToJSON _opts (To1Args te tel) = liftToEncoding te tel . unRec1
814+ {-# INLINE gToJSON #-}
712815
713−instance GToEncoding arity U1 where
816+instance GToJSON Encoding arity U1 where
714817 -- Empty constructors are encoded to an empty array:
715− gToEncoding _opts _ _ = E.emptyArray_
716−
717−instance (ConsToEncoding arity a) => GToEncoding arity (C1 c a) where
718− -- Constructors need to be encoded differently depending on whether they're
719− -- a record or not. This distinction is made by 'consToEncoding':
720− gToEncoding opts targs = consToEncoding opts targs . unM1
818+ gToJSON _opts _ _ = E.emptyArray_
819+ {-# INLINE gToJSON #-}
721820
722821instance ( EncodeProduct arity a
723822 , EncodeProduct arity b
724− ) => GToEncoding arity (a :*: b) where
823+ ) => GToJSON Encoding arity (a :*: b)
824+ where
725825 -- Products are encoded to an array. Here we allocate a mutable vector of
726826 -- the same size as the product and write the product's elements to it using
727827 -- 'encodeProduct':
728− gToEncoding opts targs p = E.tuple $ encodeProduct opts targs p
828+ gToJSON opts targs p = E.list E.retagEncoding [encodeProduct opts targs p]
829+ {-# INLINE gToJSON #-}
729830
730−instance ( AllNullary (a :+: b) allNullary
731− , SumToEncoding arity (a :+: b) allNullary
732− ) => GToEncoding arity (a :+: b) where
733− -- If all constructors of a sum datatype are nullary and the
734− -- 'allNullaryToStringTag' option is set they are encoded to
735− -- strings. This distinction is made by 'sumToEncoding':
736− gToEncoding opts targs
737− = (unTagged :: Tagged allNullary Encoding -> Encoding)
738− . sumToEncoding opts targs
739−
740−instance (ToJSON1 f, GToEncoding One g) => GToEncoding One (f :.: g) where
831+instance ( ToJSON1 f
832+ , GToJSON Encoding One g
833+ ) => GToJSON Encoding One (f :.: g)
834+ where
741835 -- If an occurrence of the last type parameter is nested inside two
742836 -- composed types, it is encoded by using the outermost type's ToJSON1
743837 -- instance to generically encode the innermost type:
744− gToEncoding opts targs =
745− let gte = gToEncoding opts targs in
838+ gToJSON opts targs =
839+ let gte = gToJSON opts targs in
746840 liftToEncoding gte (listEncoding gte) . unComp1
841+ {-# INLINE gToJSON #-}
747842
748843--------------------------------------------------------------------------------
749844
750−class SumToJSON arity f allNullary where
751− sumToJSON :: Options -> ToArgs Value arity a
752− -> f a -> Tagged allNullary Value
753−
754−instance ( GetConName f
755− , TaggedObjectPairs arity f
756− , ObjectWithSingleFieldObj arity f
757− , TwoElemArrayObj arity f
758− , UntaggedValueObj arity f
759− ) => SumToJSON arity f True where
845+class SumToJSON enc arity f allNullary where
846+ sumToJSON :: Options -> ToArgs enc arity a
847+ -> f a -> Tagged allNullary enc
848+
849+instance ( GetConName f
850+ , FromString enc
851+ , TaggedObject enc arity f
852+ , SumToJSON' ObjectWithSingleField enc arity f
853+ , SumToJSON' TwoElemArray enc arity f
854+ , SumToJSON' UntaggedValue enc arity f
855+ ) => SumToJSON enc arity f True
856+ where
760857 sumToJSON opts targs
761− | allNullaryToStringTag opts = Tagged . String . pack
858+ | allNullaryToStringTag opts = Tagged . fromString
762859 . constructorTagModifier opts . getConName
763860 | otherwise = Tagged . nonAllNullarySumToJSON opts targs
764861
765−instance ( TwoElemArrayObj arity f
766− , TaggedObjectPairs arity f
767− , ObjectWithSingleFieldObj arity f
768− , UntaggedValueObj arity f
769− ) => SumToJSON arity f False where
862+instance ( TaggedObject enc arity f
863+ , SumToJSON' ObjectWithSingleField enc arity f
864+ , SumToJSON' TwoElemArray enc arity f
865+ , SumToJSON' UntaggedValue enc arity f
866+ ) => SumToJSON enc arity f False
867+ where
770868 sumToJSON opts targs = Tagged . nonAllNullarySumToJSON opts targs
771869
772−nonAllNullarySumToJSON :: ( TwoElemArrayObj arity f
773− , TaggedObjectPairs arity f
774− , ObjectWithSingleFieldObj arity f
775− , UntaggedValueObj arity f
776− ) => Options -> ToArgs Value arity a
777− -> f a -> Value
870+nonAllNullarySumToJSON :: ( TaggedObject enc arity f
871+ , SumToJSON' ObjectWithSingleField enc arity f
872+ , SumToJSON' TwoElemArray enc arity f
873+ , SumToJSON' UntaggedValue enc arity f
874+ ) => Options -> ToArgs enc arity a
875+ -> f a -> enc
778876nonAllNullarySumToJSON opts targs =
779877 case sumEncoding opts of
780− TaggedObject{..} ->
781− object . taggedObjectPairs opts targs tagFieldName contentsFieldName
782− ObjectWithSingleField -> Object . objectWithSingleFieldObj opts targs
783− TwoElemArray -> Array . twoElemArrayObj opts targs
784− UntaggedValue -> untaggedValueObj opts targs
785878
786−--------------------------------------------------------------------------------
787−
788−class SumToEncoding arity f allNullary where
789− sumToEncoding :: Options -> ToArgs Encoding arity a
790− -> f a -> Tagged allNullary Encoding
791−
792−instance ( GetConName f
793− , TaggedObjectEnc arity f
794− , ObjectWithSingleFieldEnc arity f
795− , TwoElemArrayEnc arity f
796− , UntaggedValueEnc arity f
797− ) => SumToEncoding arity f True where
798− sumToEncoding opts targs
799− | allNullaryToStringTag opts = Tagged . toEncoding .
800− constructorTagModifier opts . getConName
801− | otherwise = Tagged . nonAllNullarySumToEncoding opts targs
802−
803−instance ( TwoElemArrayEnc arity f
804− , TaggedObjectEnc arity f
805− , ObjectWithSingleFieldEnc arity f
806− , UntaggedValueEnc arity f
807− ) => SumToEncoding arity f False where
808− sumToEncoding opts targs = Tagged . nonAllNullarySumToEncoding opts targs
809−
810−nonAllNullarySumToEncoding :: ( TwoElemArrayEnc arity f
811− , TaggedObjectEnc arity f
812− , ObjectWithSingleFieldEnc arity f
813− , UntaggedValueEnc arity f
814− ) => Options -> ToArgs Encoding arity a
815− -> f a -> Encoding
816−nonAllNullarySumToEncoding opts targs =
817− case sumEncoding opts of
818879 TaggedObject{..} ->
819− taggedObjectEnc opts targs tagFieldName contentsFieldName
820− ObjectWithSingleField -> objectWithSingleFieldEnc opts targs
821− TwoElemArray -> twoElemArrayEnc opts targs
822− UntaggedValue -> untaggedValueEnc opts targs
880+ taggedObject opts targs tagFieldName contentsFieldName
823881
824−--------------------------------------------------------------------------------
882+ ObjectWithSingleField ->
883+ (unTagged :: Tagged ObjectWithSingleField enc -> enc)
884+ . sumToJSON' opts targs
825885
826−class TaggedObjectPairs arity f where
827− taggedObjectPairs :: Options -> ToArgs Value arity a
828− -> String -> String
829− -> f a -> [Pair]
830−
831−instance ( TaggedObjectPairs arity a
832− , TaggedObjectPairs arity b
833− ) => TaggedObjectPairs arity (a :+: b) where
834− taggedObjectPairs opts targs tagFieldName contentsFieldName (L1 x) =
835− taggedObjectPairs opts targs tagFieldName contentsFieldName x
836− taggedObjectPairs opts targs tagFieldName contentsFieldName (R1 x) =
837− taggedObjectPairs opts targs tagFieldName contentsFieldName x
838−
839−instance ( IsRecord a isRecord
840− , TaggedObjectPairs' arity a isRecord
841− , Constructor c
842− ) => TaggedObjectPairs arity (C1 c a) where
843− taggedObjectPairs opts targs tagFieldName contentsFieldName =
844− (pack tagFieldName .= constructorTagModifier opts
845− (conName (undefined :: t c a p)) :) .
846− (unTagged :: Tagged isRecord [Pair] -> [Pair]) .
847− taggedObjectPairs' opts targs contentsFieldName . unM1
886+ TwoElemArray ->
887+ (unTagged :: Tagged TwoElemArray enc -> enc)
888+ . sumToJSON' opts targs
848889
849−class TaggedObjectPairs' arity f isRecord where
850− taggedObjectPairs' :: Options -> ToArgs Value arity a
851− -> String -> f a -> Tagged isRecord [Pair]
890+ UntaggedValue ->
891+ (unTagged :: Tagged UntaggedValue enc -> enc)
892+ . sumToJSON' opts targs
852893
853−instance OVERLAPPING_ TaggedObjectPairs' arity U1 False where
854− taggedObjectPairs' _ _ _ _ = Tagged []
894+--------------------------------------------------------------------------------
895+
896+class FromString enc where
897+ fromString :: String -> enc
855898
856−instance (RecordToPairs arity f) => TaggedObjectPairs' arity f True where
857− taggedObjectPairs' opts targs _ =
858− Tagged . toList . recordToPairs opts targs
899+instance FromString Encoding where
900+ fromString = toEncoding
859901
860−instance (GToJSON arity f) => TaggedObjectPairs' arity f False where
861− taggedObjectPairs' opts targs contentsFieldName =
862− Tagged . (:[]) . (pack contentsFieldName .=) . gToJSON opts targs
902+instance FromString Value where
903+ fromString = String . pack
863904
864905--------------------------------------------------------------------------------
865906
866−class TaggedObjectEnc arity f where
867− taggedObjectEnc :: Options -> ToArgs Encoding arity a
868− -> String -> String
869− -> f a -> Encoding
870−
871−instance ( TaggedObjectEnc arity a
872− , TaggedObjectEnc arity b
873− ) => TaggedObjectEnc arity (a :+: b) where
874− taggedObjectEnc opts targs tagFieldName contentsFieldName (L1 x) =
875− taggedObjectEnc opts targs tagFieldName contentsFieldName x
876− taggedObjectEnc opts targs tagFieldName contentsFieldName (R1 x) =
877− taggedObjectEnc opts targs tagFieldName contentsFieldName x
878−
879−instance ( IsRecord a isRecord
880− , TaggedObjectEnc' arity a isRecord
907+class TaggedObject enc arity f where
908+ taggedObject :: Options -> ToArgs enc arity a
909+ -> String -> String
910+ -> f a -> enc
911+
912+instance ( TaggedObject enc arity a
913+ , TaggedObject enc arity b
914+ ) => TaggedObject enc arity (a :+: b)
915+ where
916+ taggedObject opts targs tagFieldName contentsFieldName (L1 x) =
917+ taggedObject opts targs tagFieldName contentsFieldName x
918+ taggedObject opts targs tagFieldName contentsFieldName (R1 x) =
919+ taggedObject opts targs tagFieldName contentsFieldName x
920+
921+instance ( IsRecord a isRecord
922+ , TaggedObject' enc pairs arity a isRecord
923+ , FromPairs enc pairs
924+ , FromString enc
925+ , KeyValuePair enc pairs
881926 , Constructor c
882− ) => TaggedObjectEnc arity (C1 c a) where
883− taggedObjectEnc opts targs tagFieldName contentsFieldName v =
884− E.wrapObject $
885− (E.string tagFieldName ><
886− E.colon ><
887− toEncoding (constructorTagModifier opts (conName (undefined :: t c a p)))) ><
888− ((unTagged :: Tagged isRecord Encoding -> Encoding) .
889− taggedObjectEnc' opts targs contentsFieldName . unM1 $ v)
890−
891−class TaggedObjectEnc' arity f isRecord where
892− taggedObjectEnc' :: Options -> ToArgs Encoding arity a
893− -> String -> f a -> Tagged isRecord Encoding
894−
895−instance OVERLAPPING_ TaggedObjectEnc' arity U1 False where
896− taggedObjectEnc' _ _ _ _ = Tagged E.empty
897−
898−instance (RecordToEncoding arity f) => TaggedObjectEnc' arity f True where
899− taggedObjectEnc' opts targs _ = Tagged . (E.comma ><) . fst
900− . recordToEncoding opts targs
901−
902−instance (GToEncoding arity f) => TaggedObjectEnc' arity f False where
903− taggedObjectEnc' opts targs contentsFieldName =
904− Tagged . (\z -> E.comma >< toEncoding contentsFieldName >< E.colon >< z) .
905− gToEncoding opts targs
927+ ) => TaggedObject enc arity (C1 c a)
928+ where
929+ taggedObject opts targs tagFieldName contentsFieldName =
930+ fromPairs . mappend tag . contents
931+ where
932+ tag = tagFieldName `pair`
933+ (fromString (constructorTagModifier opts (conName (undefined :: t c a p)))
934+ :: enc)
935+ contents =
936+ (unTagged :: Tagged isRecord pairs -> pairs) .
937+ taggedObject' opts targs contentsFieldName . unM1
938+
939+class TaggedObject' enc pairs arity f isRecord where
940+ taggedObject' :: Options -> ToArgs enc arity a
941+ -> String -> f a -> Tagged isRecord pairs
942+
943+instance ( GToJSON enc arity f
944+ , KeyValuePair enc pairs
945+ ) => TaggedObject' enc pairs arity f False
946+ where
947+ taggedObject' opts targs contentsFieldName =
948+ Tagged . (contentsFieldName `pair`) . gToJSON opts targs
949+
950+instance OVERLAPPING_ Monoid pairs => TaggedObject' enc pairs arity U1 False where
951+ taggedObject' _ _ _ _ = Tagged mempty
952+
953+instance ( RecordToPairs enc pairs arity f
954+ ) => TaggedObject' enc pairs arity f True
955+ where
956+ taggedObject' opts targs _ = Tagged . recordToPairs opts targs
906957
907958--------------------------------------------------------------------------------
908959
@@ -917,23 +968,38 @@ instance (GetConName a, GetConName b) => GetConName (a :+: b) where
917968instance (Constructor c) => GetConName (C1 c a) where
918969 getConName = conName
919970
971+-- For genericToJSONKey
972+instance GetConName a => GetConName (D1 d a) where
973+ getConName (M1 x) = getConName x
974+
920975--------------------------------------------------------------------------------
921976
922−class TwoElemArrayObj arity f where
923− twoElemArrayObj :: Options -> ToArgs Value arity a
924− -> f a -> V.Vector Value
977+-- Reflection of SumEncoding variants
925978
926−instance ( TwoElemArrayObj arity a
927− , TwoElemArrayObj arity b
928− ) => TwoElemArrayObj arity (a :+: b) where
929− twoElemArrayObj opts targs (L1 x) = twoElemArrayObj opts targs x
930− twoElemArrayObj opts targs (R1 x) = twoElemArrayObj opts targs x
979+data ObjectWithSingleField
980+data TwoElemArray
981+data UntaggedValue
931982
932−instance ( GToJSON arity a
933− , ConsToJSON arity a
983+--------------------------------------------------------------------------------
984+
985+class SumToJSON' s enc arity f where
986+ sumToJSON' :: Options -> ToArgs enc arity a
987+ -> f a -> Tagged s enc
988+
989+instance ( SumToJSON' s enc arity a
990+ , SumToJSON' s enc arity b
991+ ) => SumToJSON' s enc arity (a :+: b)
992+ where
993+ sumToJSON' opts targs (L1 x) = sumToJSON' opts targs x
994+ sumToJSON' opts targs (R1 x) = sumToJSON' opts targs x
995+
996+--------------------------------------------------------------------------------
997+
998+instance ( GToJSON Value arity a
999+ , ConsToJSON Value arity a
9341000 , Constructor c
935− ) => TwoElemArrayObj arity (C1 c a) where
936− twoElemArrayObj opts targs x = V.create $ do
1001+ ) => SumToJSON' TwoElemArray Value arity (C1 c a) where
1002+ sumToJSON' opts targs x = Tagged $ Array $ V.create $ do
9371003 mv <- VM.unsafeNew 2
9381004 VM.unsafeWrite mv 0 $ String $ pack $ constructorTagModifier opts
9391005 $ conName (undefined :: t c a p)
@@ -942,148 +1008,121 @@ instance ( GToJSON arity a
9421008
9431009--------------------------------------------------------------------------------
9441010
945−class TwoElemArrayEnc arity f where
946− twoElemArrayEnc :: Options -> ToArgs Encoding arity a
947− -> f a -> Encoding
948−
949−instance ( TwoElemArrayEnc arity a
950− , TwoElemArrayEnc arity b
951− ) => TwoElemArrayEnc arity (a :+: b) where
952− twoElemArrayEnc opts targs (L1 x) = twoElemArrayEnc opts targs x
953− twoElemArrayEnc opts targs (R1 x) = twoElemArrayEnc opts targs x
954−
955−instance ( GToEncoding arity a
956− , ConsToEncoding arity a
1011+instance ( GToJSON Encoding arity a
1012+ , ConsToJSON Encoding arity a
9571013 , Constructor c
958− ) => TwoElemArrayEnc arity (C1 c a) where
959− twoElemArrayEnc opts targs x = E.tuple $
960− toEncoding (constructorTagModifier opts (conName (undefined :: t c a p))) >*<
961− gToEncoding opts targs x
1014+ ) => SumToJSON' TwoElemArray Encoding arity (C1 c a)
1015+ where
1016+ sumToJSON' opts targs x = Tagged $ E.list id
1017+ [ toEncoding (constructorTagModifier opts (conName (undefined :: t c a p)))
1018+ , gToJSON opts targs x
1019+ ]
9621020
9631021--------------------------------------------------------------------------------
9641022
965−class ConsToJSON arity f where
966− consToJSON :: Options -> ToArgs Value arity a
967− -> f a -> Value
1023+class ConsToJSON enc arity f where
1024+ consToJSON :: Options -> ToArgs enc arity a
1025+ -> f a -> enc
9681026
969−class ConsToJSON' arity f isRecord where
970− consToJSON' :: Options -> ToArgs Value arity a
971− -> Bool -- ^ Are we a record with one field?
972− -> f a -> Tagged isRecord Value
1027+class ConsToJSON' enc arity f isRecord where
1028+ consToJSON' :: Options -> ToArgs enc arity a
1029+ -> f a -> Tagged isRecord enc
9731030
974−instance ( IsRecord f isRecord
975− , ConsToJSON' arity f isRecord
976− ) => ConsToJSON arity f where
1031+instance ( IsRecord f isRecord
1032+ , ConsToJSON' enc arity f isRecord
1033+ ) => ConsToJSON enc arity f
1034+ where
9771035 consToJSON opts targs =
978− (unTagged :: Tagged isRecord Value -> Value)
979− . consToJSON' opts targs (isUnary (undefined :: f a))
980−
981−instance (RecordToPairs arity f) => ConsToJSON' arity f True where
982− consToJSON' opts targs isUn f = let
983− vals = toList $ recordToPairs opts targs f
984− in case (unwrapUnaryRecords opts,isUn,vals) of
985− (True,True,[(_,val)]) -> Tagged val
986− _ -> Tagged $ object vals
987−
988−instance GToJSON arity f => ConsToJSON' arity f False where
989− consToJSON' opts targs _ = Tagged . gToJSON opts targs
1036+ (unTagged :: Tagged isRecord enc -> enc)
1037+ . consToJSON' opts targs
1038+ {-# INLINE consToJSON #-}
9901039
991−--------------------------------------------------------------------------------
992−
993−class ConsToEncoding arity f where
994− consToEncoding :: Options -> ToArgs Encoding arity a
995− -> f a -> Encoding
996−
997−class ConsToEncoding' arity f isRecord where
998− consToEncoding' :: Options -> ToArgs Encoding arity a
999− -> Bool -- ^ Are we a record with one field?
1000− -> f a -> Tagged isRecord Encoding
1040+instance OVERLAPPING_
1041+ ( RecordToPairs enc pairs arity (S1 s f)
1042+ , FromPairs enc pairs
1043+ , GToJSON enc arity f
1044+ ) => ConsToJSON' enc arity (S1 s f) True
1045+ where
1046+ consToJSON' opts targs
1047+ | unwrapUnaryRecords opts = Tagged . gToJSON opts targs
1048+ | otherwise = Tagged . fromPairs . recordToPairs opts targs
1049+ {-# INLINE consToJSON' #-}
1050+
1051+instance ( RecordToPairs enc pairs arity f
1052+ , FromPairs enc pairs
1053+ ) => ConsToJSON' enc arity f True
1054+ where
1055+ consToJSON' opts targs = Tagged . fromPairs . recordToPairs opts targs
1056+ {-# INLINE consToJSON' #-}
10011057
1002−instance ( IsRecord f isRecord
1003− , ConsToEncoding' arity f isRecord
1004− ) => ConsToEncoding arity f where
1005− consToEncoding opts targs =
1006− (unTagged :: Tagged isRecord Encoding -> Encoding)
1007− . consToEncoding' opts targs (isUnary (undefined :: f a))
1008−
1009−instance (RecordToEncoding arity f) => ConsToEncoding' arity f True where
1010− consToEncoding' opts targs isUn x =
1011− let (enc, mbVal) = recordToEncoding opts targs x
1012− in case (unwrapUnaryRecords opts, isUn, mbVal) of
1013− (True, True, Just val) -> Tagged val
1014− _ -> Tagged $ E.wrapObject enc
1015−
1016−instance GToEncoding arity f => ConsToEncoding' arity f False where
1017− consToEncoding' opts targs _ = Tagged . gToEncoding opts targs
1058+instance GToJSON enc arity f => ConsToJSON' enc arity f False where
1059+ consToJSON' opts targs = Tagged . gToJSON opts targs
1060+ {-# INLINE consToJSON' #-}
10181061
10191062--------------------------------------------------------------------------------
10201063
1021−class RecordToPairs arity f where
1022− recordToPairs :: Options -> ToArgs Value arity a
1023− -> f a -> DList Pair
1024−
1025−instance ( RecordToPairs arity a
1026− , RecordToPairs arity b
1027− ) => RecordToPairs arity (a :*: b) where
1028− recordToPairs opts targs (a :*: b) = recordToPairs opts targs a <>
1029− recordToPairs opts targs b
1064+class RecordToPairs enc pairs arity f where
1065+ -- 1st element: whole thing
1066+ -- 2nd element: in case the record has only 1 field, just the value
1067+ -- of the field (without the key); 'Nothing' otherwise
1068+ recordToPairs :: Options -> ToArgs enc arity a
1069+ -> f a -> pairs
10301070
1031−instance (Selector s, GToJSON arity a) => RecordToPairs arity (S1 s a) where
1071+instance ( Monoid pairs
1072+ , RecordToPairs enc pairs arity a
1073+ , RecordToPairs enc pairs arity b
1074+ ) => RecordToPairs enc pairs arity (a :*: b)
1075+ where
1076+ recordToPairs opts (targs :: ToArgs enc arity p) (a :*: b) =
1077+ pairsOf a `mappend` pairsOf b
1078+ where
1079+ pairsOf :: (RecordToPairs enc pairs arity f) => f p -> pairs
1080+ pairsOf = recordToPairs opts targs
1081+ {-# INLINE recordToPairs #-}
1082+
1083+instance ( Selector s
1084+ , GToJSON enc arity a
1085+ , KeyValuePair enc pairs
1086+ ) => RecordToPairs enc pairs arity (S1 s a)
1087+ where
10321088 recordToPairs = fieldToPair
1033−
1034−instance OVERLAPPING_ (Selector s, ToJSON a) =>
1035− RecordToPairs arity (S1 s (K1 i (Maybe a))) where
1089+ {-# INLINE recordToPairs #-}
1090+
1091+instance INCOHERENT_
1092+ ( Selector s
1093+ , GToJSON enc arity (K1 i (Maybe a))
1094+ , KeyValuePair enc pairs
1095+ , Monoid pairs
1096+ ) => RecordToPairs enc pairs arity (S1 s (K1 i (Maybe a)))
1097+ where
10361098 recordToPairs opts _ (M1 k1) | omitNothingFields opts
1037− , K1 Nothing <- k1 = DList.empty
1099+ , K1 Nothing <- k1 = mempty
10381100 recordToPairs opts targs m1 = fieldToPair opts targs m1
1039−
1040−fieldToPair :: (Selector s, GToJSON arity a)
1041− => Options -> ToArgs Value arity p
1042− -> S1 s a p -> DList Pair
1043−fieldToPair opts targs m1 = pure ( pack $ fieldLabelModifier opts $ selName m1
1044− , gToJSON opts targs (unM1 m1)
1045− )
1046−
1047−--------------------------------------------------------------------------------
1048−
1049−class RecordToEncoding arity f where
1050− -- 1st element: whole thing
1051− -- 2nd element: in case the record has only 1 field, just the value
1052− -- of the field (without the key); 'Nothing' otherwise
1053− recordToEncoding :: Options -> ToArgs Encoding arity a
1054− -> f a -> (Encoding, Maybe Encoding)
1055−
1056−instance ( RecordToEncoding arity a
1057− , RecordToEncoding arity b
1058− ) => RecordToEncoding arity (a :*: b) where
1059− recordToEncoding opts targs (a :*: b) | omitNothingFields opts =
1060− (E.econcat $ intersperse E.comma $
1061− filter (not . E.nullEncoding)
1062− [ fst (recordToEncoding opts targs a)
1063− , fst (recordToEncoding opts targs b) ]
1064− , Nothing)
1065− recordToEncoding opts targs (a :*: b) =
1066− (fst (recordToEncoding opts targs a) >< E.comma ><
1067− fst (recordToEncoding opts targs b),
1068− Nothing)
1069−
1070−
1071−instance (Selector s, GToEncoding arity a) => RecordToEncoding arity (S1 s a) where
1072− recordToEncoding = fieldToEncoding
1073−
1074−instance OVERLAPPING_ (Selector s, ToJSON a) =>
1075− RecordToEncoding arity (S1 s (K1 i (Maybe a))) where
1076− recordToEncoding opts _ (M1 k1) | omitNothingFields opts
1077− , K1 Nothing <- k1 = (E.empty, Nothing)
1078− recordToEncoding opts targs m1 = fieldToEncoding opts targs m1
1079−
1080−fieldToEncoding :: (Selector s, GToEncoding arity a)
1081− => Options -> ToArgs Encoding arity p
1082− -> S1 s a p -> (Encoding, Maybe Encoding)
1083−fieldToEncoding opts targs m1 =
1084− let keyBuilder = toEncoding (fieldLabelModifier opts $ selName m1)
1085− valueBuilder = gToEncoding opts targs (unM1 m1)
1086− in (keyBuilder >< E.colon >< valueBuilder, Just valueBuilder)
1101+ {-# INLINE recordToPairs #-}
1102+
1103+instance INCOHERENT_
1104+ ( Selector s
1105+ , GToJSON enc arity (K1 i (Maybe a))
1106+ , KeyValuePair enc pairs
1107+ , Monoid pairs
1108+ ) => RecordToPairs enc pairs arity (S1 s (K1 i (Semigroup.Option a)))
1109+ where
1110+ recordToPairs opts targs = recordToPairs opts targs . unwrap
1111+ where
1112+ unwrap :: S1 s (K1 i (Semigroup.Option a)) p -> S1 s (K1 i (Maybe a)) p
1113+ unwrap (M1 (K1 (Semigroup.Option a))) = M1 (K1 a)
1114+ {-# INLINE recordToPairs #-}
1115+
1116+fieldToPair :: (Selector s
1117+ , GToJSON enc arity a
1118+ , KeyValuePair enc pairs)
1119+ => Options -> ToArgs enc arity p
1120+ -> S1 s a p -> pairs
1121+fieldToPair opts targs m1 =
1122+ let key = fieldLabelModifier opts (selName m1)
1123+ value = gToJSON opts targs (unM1 m1)
1124+ in key `pair` value
1125+{-# INLINE fieldToPair #-}
10871126
10881127--------------------------------------------------------------------------------
10891128
@@ -1106,10 +1145,12 @@ instance ( WriteProduct arity a
11061145 lenL = len `unsafeShiftR` 1
11071146 lenR = len - lenL
11081147 ixR = ix + lenL
1148+ {-# INLINE writeProduct #-}
11091149
1110−instance OVERLAPPABLE_ (GToJSON arity a) => WriteProduct arity a where
1150+instance OVERLAPPABLE_ (GToJSON Value arity a) => WriteProduct arity a where
11111151 writeProduct opts targs mv ix _ =
11121152 VM.unsafeWrite mv ix . gToJSON opts targs
1153+ {-# INLINE writeProduct #-}
11131154
11141155--------------------------------------------------------------------------------
11151156
@@ -1124,114 +1165,44 @@ instance ( EncodeProduct arity a
11241165 E.econcat $ intersperse E.comma $
11251166 filter (not . E.nullEncoding)
11261167 [encodeProduct opts targs a, encodeProduct opts targs b]
1127− encodeProduct opts targs (a :*: b) = encodeProduct opts targs a >*<
1128− encodeProduct opts targs b
1168+ encodeProduct opts targs (a :*: b) =
1169+ encodeProduct opts targs a >*<
1170+ encodeProduct opts targs b
1171+ {-# INLINE encodeProduct #-}
11291172
1130−instance OVERLAPPABLE_ (GToEncoding arity a) => EncodeProduct arity a where
1131− encodeProduct opts targs a = E.retagEncoding $ gToEncoding opts targs a
1173+instance OVERLAPPABLE_ (GToJSON Encoding arity a) => EncodeProduct arity a where
1174+ encodeProduct opts targs a = E.retagEncoding $ gToJSON opts targs a
1175+ {-# INLINE encodeProduct #-}
11321176
11331177--------------------------------------------------------------------------------
11341178
1135−class ObjectWithSingleFieldObj arity f where
1136− objectWithSingleFieldObj :: Options -> ToArgs Value arity a
1137− -> f a -> Object
1138−
1139−instance ( ObjectWithSingleFieldObj arity a
1140− , ObjectWithSingleFieldObj arity b
1141− ) => ObjectWithSingleFieldObj arity (a :+: b) where
1142− objectWithSingleFieldObj opts targs (L1 x) =
1143− objectWithSingleFieldObj opts targs x
1144− objectWithSingleFieldObj opts targs (R1 x) =
1145− objectWithSingleFieldObj opts targs x
1146−
1147−instance ( GToJSON arity a
1148− , ConsToJSON arity a
1179+instance ( GToJSON enc arity a
1180+ , ConsToJSON enc arity a
1181+ , FromPairs enc pairs
1182+ , KeyValuePair enc pairs
11491183 , Constructor c
1150− ) => ObjectWithSingleFieldObj arity (C1 c a) where
1151− objectWithSingleFieldObj opts targs = H.singleton typ . gToJSON opts targs
1184+ ) => SumToJSON' ObjectWithSingleField enc arity (C1 c a)
1185+ where
1186+ sumToJSON' opts targs =
1187+ Tagged . fromPairs . (typ `pair`) . gToJSON opts targs
11521188 where
1153− typ = pack $ constructorTagModifier opts $
1189+ typ = constructorTagModifier opts $
11541190 conName (undefined :: t c a p)
11551191
11561192--------------------------------------------------------------------------------
11571193
1158−class ObjectWithSingleFieldEnc arity f where
1159− objectWithSingleFieldEnc :: Options -> ToArgs Encoding arity a
1160− -> f a -> Encoding
1161−
1162−instance ( ObjectWithSingleFieldEnc arity a
1163− , ObjectWithSingleFieldEnc arity b
1164− ) => ObjectWithSingleFieldEnc arity (a :+: b) where
1165− objectWithSingleFieldEnc opts targs (L1 x) =
1166− objectWithSingleFieldEnc opts targs x
1167− objectWithSingleFieldEnc opts targs (R1 x) =
1168− objectWithSingleFieldEnc opts targs x
1169−
1170−instance ( GToEncoding arity a
1171− , ConsToEncoding arity a
1172− , Constructor c
1173− ) => ObjectWithSingleFieldEnc arity (C1 c a) where
1174− objectWithSingleFieldEnc opts targs v =
1175− E.openCurly ><
1176− toEncoding
1177− (constructorTagModifier opts
1178− (conName (undefined :: t c a p))) ><
1179− E.colon ><
1180− gToEncoding opts targs v ><
1181− E.closeCurly
1182−
1183−--------------------------------------------------------------------------------
1184−
1185−class UntaggedValueObj arity f where
1186− untaggedValueObj :: Options -> ToArgs Value arity a
1187− -> f a -> Value
1188−
1189−instance
1190− ( UntaggedValueObj arity a
1191− , UntaggedValueObj arity b
1192− ) => UntaggedValueObj arity (a :+: b)
1193− where
1194− untaggedValueObj opts targs (L1 x) = untaggedValueObj opts targs x
1195− untaggedValueObj opts targs (R1 x) = untaggedValueObj opts targs x
1196−
11971194instance OVERLAPPABLE_
1198− ( GToJSON arity a
1199− , ConsToJSON arity a
1200− ) => UntaggedValueObj arity (C1 c a) where
1201− untaggedValueObj = gToJSON
1202−
1203−instance OVERLAPPING_
1204− ( Constructor c )
1205− => UntaggedValueObj arity (C1 c U1)
1206− where
1207− untaggedValueObj opts _ _ = toJSON $
1208− constructorTagModifier opts $ conName (undefined :: t c U1 p)
1209−
1210−--------------------------------------------------------------------------------
1211−
1212−class UntaggedValueEnc arity f where
1213− untaggedValueEnc :: Options -> ToArgs Encoding arity a
1214− -> f a -> Encoding
1215−instance
1216− ( UntaggedValueEnc arity a
1217− , UntaggedValueEnc arity b
1218− ) => UntaggedValueEnc arity (a :+: b)
1219− where
1220− untaggedValueEnc opts targs (L1 x) = untaggedValueEnc opts targs x
1221− untaggedValueEnc opts targs (R1 x) = untaggedValueEnc opts targs x
1222−
1223−instance OVERLAPPABLE_
1224− ( GToEncoding arity a
1225− , ConsToEncoding arity a
1226− ) => UntaggedValueEnc arity (C1 c a)
1195+ ( ConsToJSON enc arity a
1196+ ) => SumToJSON' UntaggedValue enc arity (C1 c a)
12271197 where
1228− untaggedValueEnc = gToEncoding
1198+ sumToJSON' opts targs = Tagged . gToJSON opts targs
12291199
12301200instance OVERLAPPING_
1231− ( Constructor c )
1232− => UntaggedValueEnc arity (C1 c U1)
1201+ ( Constructor c
1202+ , FromString enc
1203+ ) => SumToJSON' UntaggedValue enc arity (C1 c U1)
12331204 where
1234− untaggedValueEnc opts _ _ = toEncoding $
1205+ sumToJSON' opts _ _ = Tagged . fromString $
12351206 constructorTagModifier opts $ conName (undefined :: t c U1 p)
12361207
12371208-------------------------------------------------------------------------------
@@ -1305,6 +1276,13 @@ instance (ToJSON a, ToJSON b) => ToJSON (Either a b) where
13051276 toEncoding = toEncoding2
13061277 {-# INLINE toEncoding #-}
13071278
1279+instance ToJSON Void where
1280+ toJSON = absurd
1281+ {-# INLINE toJSON #-}
1282+
1283+ toEncoding = absurd
1284+ {-# INLINE toEncoding #-}
1285+
13081286
13091287instance ToJSON Bool where
13101288 toJSON = Bool
@@ -1490,7 +1468,6 @@ instance ToJSONKey Int64 where
14901468 toJSONKey = toJSONKeyTextEnc E.int64Text
14911469 {-# INLINE toJSONKey #-}
14921470
1493−
14941471instance ToJSON Word where
14951472 toJSON = Number . fromIntegral
14961473 {-# INLINE toJSON #-}
@@ -1550,6 +1527,12 @@ instance ToJSONKey Word64 where
15501527 toJSONKey = toJSONKeyTextEnc E.word64Text
15511528 {-# INLINE toJSONKey #-}
15521529
1530+instance ToJSON CTime where
1531+ toJSON (CTime i) = toJSON i
1532+ {-# INLINE toJSON #-}
1533+
1534+ toEncoding (CTime i) = toEncoding i
1535+ {-# INLINE toEncoding #-}
15531536
15541537instance ToJSON Text where
15551538 toJSON = String
@@ -1664,7 +1647,7 @@ instance (ToJSON a) => ToJSON (Identity a) where
16641647 toEncodingList = liftToEncodingList toEncoding toEncodingList
16651648 {-# INLINE toEncodingList #-}
16661649
1667−instance (ToJSONKey a, ToJSON a) => ToJSONKey (Identity a) where
1650+instance (ToJSONKey a) => ToJSONKey (Identity a) where
16681651 toJSONKey = contramapToJSONKeyFunction runIdentity toJSONKey
16691652 toJSONKeyList = contramapToJSONKeyFunction (map runIdentity) toJSONKeyList
16701653
@@ -1813,13 +1796,11 @@ instance ToJSONKey k => ToJSON1 (M.Map k) where
18131796 ToJSONKeyValue f _ -> Array . V.fromList . map (toJSONPair f g) . M.toList
18141797 {-# INLINE liftToJSON #-}
18151798
1816− -- liftToEncoding :: forall a. (a -> Encoding) -> ([a] -> Encoding) -> M.Map k a -> Encoding
18171799 liftToEncoding g _ = case toJSONKey of
18181800 ToJSONKeyText _ f -> dict f g M.foldrWithKey
18191801 ToJSONKeyValue _ f -> listEncoding (pairEncoding f) . M.toList
18201802 where
1821− -- pairEncoding :: (k -> Encoding) -> (k, a) -> Encoding
1822− pairEncoding f (a, b) = tuple $ f a >*< g b
1803+ pairEncoding f (a, b) = E.list id [f a, g b]
18231804 {-# INLINE liftToEncoding #-}
18241805
18251806
@@ -1857,6 +1838,17 @@ instance (ToJSON v) => ToJSON (Tree.Tree v) where
18571838 toEncoding = toEncoding1
18581839 {-# INLINE toEncoding #-}
18591840
1841+-------------------------------------------------------------------------------
1842+-- uuid
1843+-------------------------------------------------------------------------------
1844+
1845+instance ToJSON UUID.UUID where
1846+ toJSON = toJSON . UUID.toText
1847+ toEncoding = E.unsafeToEncoding . EB.quote . B.byteString . UUID.toASCIIBytes
1848+
1849+instance ToJSONKey UUID.UUID where
1850+ toJSONKey = ToJSONKeyText UUID.toText $
1851+ E.unsafeToEncoding . EB.quote . B.byteString . UUID.toASCIIBytes
18601852
18611853-------------------------------------------------------------------------------
18621854-- vector
@@ -1870,6 +1862,8 @@ instance ToJSON1 Vector where
18701862 {-# INLINE liftToEncoding #-}
18711863
18721864instance (ToJSON a) => ToJSON (Vector a) where
1865+ {-# SPECIALIZE instance ToJSON Array #-}
1866+
18731867 toJSON = toJSON1
18741868 {-# INLINE toJSON #-}
18751869
@@ -1937,11 +1931,12 @@ instance ToJSONKey k => ToJSON1 (H.HashMap k) where
19371931 ToJSONKeyText _ f -> dict f g H.foldrWithKey
19381932 ToJSONKeyValue _ f -> listEncoding (pairEncoding f) . H.toList
19391933 where
1940− -- pairEncoding :: (k -> Encoding) -> (k, a) -> Encoding
1941− pairEncoding f (a, b) = tuple $ f a >*< g b
1934+ pairEncoding f (a, b) = E.list id [f a, g b]
19421935 {-# INLINE liftToEncoding #-}
19431936
19441937instance (ToJSON v, ToJSONKey k) => ToJSON (H.HashMap k v) where
1938+ {-# SPECIALIZE instance ToJSON Object #-}
1939+
19451940 toJSON = toJSON1
19461941 {-# INLINE toJSON #-}
19471942
@@ -1971,6 +1966,32 @@ dotNetTime (DotNetTime t) = secs ++ formatMillis t ++ ")/"
19711966formatMillis :: (FormatTime t) => t -> String
19721967formatMillis = take 3 . formatTime defaultTimeLocale "%q"
19731968
1969+-------------------------------------------------------------------------------
1970+-- primitive
1971+-------------------------------------------------------------------------------
1972+
1973+instance ToJSON a => ToJSON (PM.Array a) where
1974+ -- note: we could do better than this if vector exposed the data
1975+ -- constructor in Data.Vector.
1976+ toJSON = toJSON . Exts.toList
1977+ toEncoding = toEncoding . Exts.toList
1978+
1979+instance ToJSON a => ToJSON (PM.SmallArray a) where
1980+ toJSON = toJSON . Exts.toList
1981+ toEncoding = toEncoding . Exts.toList
1982+
1983+#if (MIN_VERSION_primitive(0,6,4))
1984+instance (PM.Prim a,ToJSON a) => ToJSON (PM.PrimArray a) where
1985+ toJSON = toJSON . Exts.toList
1986+ toEncoding = toEncoding . Exts.toList
1987+
1988+#if !MIN_VERSION_primitive(0,7,0)
1989+instance (PM.PrimUnlifted a,ToJSON a) => ToJSON (PM.UnliftedArray a) where
1990+ toJSON = toJSON . Exts.toList
1991+ toEncoding = toEncoding . Exts.toList
1992+#endif
1993+#endif
1994+
19741995-------------------------------------------------------------------------------
19751996-- time
19761997-------------------------------------------------------------------------------
@@ -2019,10 +2040,11 @@ stringEncoding :: Encoding' Text -> Value
20192040stringEncoding = String
20202041 . T.dropAround (== '"')
20212042 . T.decodeLatin1
2022− . lazyToStrictByteString
2043+ . L.toStrict
20232044 . E.encodingToLazyByteString
20242045{-# INLINE stringEncoding #-}
20252046
2047+
20262048instance ToJSON NominalDiffTime where
20272049 toJSON = Number . realToFrac
20282050 {-# INLINE toJSON #-}
@@ -2030,18 +2052,100 @@ instance ToJSON NominalDiffTime where
20302052 toEncoding = E.scientific . realToFrac
20312053 {-# INLINE toEncoding #-}
20322054
2055+
2056+instance ToJSON DiffTime where
2057+ toJSON = Number . realToFrac
2058+ {-# INLINE toJSON #-}
2059+
2060+ toEncoding = E.scientific . realToFrac
2061+ {-# INLINE toEncoding #-}
2062+
2063+-- | Encoded as number
2064+instance ToJSON SystemTime where
2065+ toJSON (MkSystemTime secs nsecs) =
2066+ toJSON (fromIntegral secs + fromIntegral nsecs / 1000000000 :: Nano)
2067+ toEncoding (MkSystemTime secs nsecs) =
2068+ toEncoding (fromIntegral secs + fromIntegral nsecs / 1000000000 :: Nano)
2069+
2070+instance ToJSON CalendarDiffTime where
2071+ toJSON (CalendarDiffTime m nt) = object
2072+ [ "months" .= m
2073+ , "time" .= nt
2074+ ]
2075+ toEncoding (CalendarDiffTime m nt) = E.pairs
2076+ ("months" .= m <> "time" .= nt)
2077+
2078+instance ToJSON CalendarDiffDays where
2079+ toJSON (CalendarDiffDays m d) = object
2080+ [ "months" .= m
2081+ , "days" .= d
2082+ ]
2083+ toEncoding (CalendarDiffDays m d) = E.pairs
2084+ ("months" .= m <> "days" .= d)
2085+
2086+instance ToJSON DayOfWeek where
2087+ toJSON Monday = "monday"
2088+ toJSON Tuesday = "tuesday"
2089+ toJSON Wednesday = "wednesday"
2090+ toJSON Thursday = "thursday"
2091+ toJSON Friday = "friday"
2092+ toJSON Saturday = "saturday"
2093+ toJSON Sunday = "sunday"
2094+
2095+toEncodingDayOfWeek :: DayOfWeek -> E.Encoding' Text
2096+toEncodingDayOfWeek Monday = E.unsafeToEncoding "\"monday\""
2097+toEncodingDayOfWeek Tuesday = E.unsafeToEncoding "\"tuesday\""
2098+toEncodingDayOfWeek Wednesday = E.unsafeToEncoding "\"wednesday\""
2099+toEncodingDayOfWeek Thursday = E.unsafeToEncoding "\"thursday\""
2100+toEncodingDayOfWeek Friday = E.unsafeToEncoding "\"friday\""
2101+toEncodingDayOfWeek Saturday = E.unsafeToEncoding "\"saturday\""
2102+toEncodingDayOfWeek Sunday = E.unsafeToEncoding "\"sunday\""
2103+
2104+instance ToJSONKey DayOfWeek where
2105+ toJSONKey = toJSONKeyTextEnc toEncodingDayOfWeek
2106+
20332107-------------------------------------------------------------------------------
20342108-- base Monoid/Semigroup
20352109-------------------------------------------------------------------------------
20362110
2037−instance ToJSON1 Dual where
2038− liftToJSON t _ = t . getDual
2111+instance ToJSON1 Monoid.Dual where
2112+ liftToJSON t _ = t . Monoid.getDual
2113+ {-# INLINE liftToJSON #-}
2114+
2115+ liftToEncoding t _ = t . Monoid.getDual
2116+ {-# INLINE liftToEncoding #-}
2117+
2118+instance ToJSON a => ToJSON (Monoid.Dual a) where
2119+ toJSON = toJSON1
2120+ {-# INLINE toJSON #-}
2121+
2122+ toEncoding = toEncoding1
2123+ {-# INLINE toEncoding #-}
2124+
2125+
2126+instance ToJSON1 Monoid.First where
2127+ liftToJSON t to' = liftToJSON t to' . Monoid.getFirst
2128+ {-# INLINE liftToJSON #-}
2129+
2130+ liftToEncoding t to' = liftToEncoding t to' . Monoid.getFirst
2131+ {-# INLINE liftToEncoding #-}
2132+
2133+instance ToJSON a => ToJSON (Monoid.First a) where
2134+ toJSON = toJSON1
2135+ {-# INLINE toJSON #-}
2136+
2137+ toEncoding = toEncoding1
2138+ {-# INLINE toEncoding #-}
2139+
2140+
2141+instance ToJSON1 Monoid.Last where
2142+ liftToJSON t to' = liftToJSON t to' . Monoid.getLast
20392143 {-# INLINE liftToJSON #-}
20402144
2041− liftToEncoding t _ = t . getDual
2145+ liftToEncoding t to' = liftToEncoding t to' . Monoid.getLast
20422146 {-# INLINE liftToEncoding #-}
20432147
2044−instance ToJSON a => ToJSON (Dual a) where
2148+instance ToJSON a => ToJSON (Monoid.Last a) where
20452149 toJSON = toJSON1
20462150 {-# INLINE toJSON #-}
20472151
@@ -2049,14 +2153,14 @@ instance ToJSON a => ToJSON (Dual a) where
20492153 {-# INLINE toEncoding #-}
20502154
20512155
2052−instance ToJSON1 First where
2053− liftToJSON t to' = liftToJSON t to' . getFirst
2156+instance ToJSON1 Semigroup.Min where
2157+ liftToJSON t _ (Semigroup.Min x) = t x
20542158 {-# INLINE liftToJSON #-}
20552159
2056− liftToEncoding t to' = liftToEncoding t to' . getFirst
2160+ liftToEncoding t _ (Semigroup.Min x) = t x
20572161 {-# INLINE liftToEncoding #-}
20582162
2059−instance ToJSON a => ToJSON (First a) where
2163+instance ToJSON a => ToJSON (Semigroup.Min a) where
20602164 toJSON = toJSON1
20612165 {-# INLINE toJSON #-}
20622166
@@ -2064,14 +2168,73 @@ instance ToJSON a => ToJSON (First a) where
20642168 {-# INLINE toEncoding #-}
20652169
20662170
2067−instance ToJSON1 Last where
2068− liftToJSON t to' = liftToJSON t to' . getLast
2171+instance ToJSON1 Semigroup.Max where
2172+ liftToJSON t _ (Semigroup.Max x) = t x
20692173 {-# INLINE liftToJSON #-}
20702174
2071− liftToEncoding t to' = liftToEncoding t to' . getLast
2175+ liftToEncoding t _ (Semigroup.Max x) = t x
20722176 {-# INLINE liftToEncoding #-}
20732177
2074−instance ToJSON a => ToJSON (Last a) where
2178+instance ToJSON a => ToJSON (Semigroup.Max a) where
2179+ toJSON = toJSON1
2180+ {-# INLINE toJSON #-}
2181+
2182+ toEncoding = toEncoding1
2183+ {-# INLINE toEncoding #-}
2184+
2185+instance ToJSON1 Semigroup.First where
2186+ liftToJSON t _ (Semigroup.First x) = t x
2187+ {-# INLINE liftToJSON #-}
2188+
2189+ liftToEncoding t _ (Semigroup.First x) = t x
2190+ {-# INLINE liftToEncoding #-}
2191+
2192+instance ToJSON a => ToJSON (Semigroup.First a) where
2193+ toJSON = toJSON1
2194+ {-# INLINE toJSON #-}
2195+
2196+ toEncoding = toEncoding1
2197+ {-# INLINE toEncoding #-}
2198+
2199+
2200+instance ToJSON1 Semigroup.Last where
2201+ liftToJSON t _ (Semigroup.Last x) = t x
2202+ {-# INLINE liftToJSON #-}
2203+
2204+ liftToEncoding t _ (Semigroup.Last x) = t x
2205+ {-# INLINE liftToEncoding #-}
2206+
2207+instance ToJSON a => ToJSON (Semigroup.Last a) where
2208+ toJSON = toJSON1
2209+ {-# INLINE toJSON #-}
2210+
2211+ toEncoding = toEncoding1
2212+ {-# INLINE toEncoding #-}
2213+
2214+
2215+instance ToJSON1 Semigroup.WrappedMonoid where
2216+ liftToJSON t _ (Semigroup.WrapMonoid x) = t x
2217+ {-# INLINE liftToJSON #-}
2218+
2219+ liftToEncoding t _ (Semigroup.WrapMonoid x) = t x
2220+ {-# INLINE liftToEncoding #-}
2221+
2222+instance ToJSON a => ToJSON (Semigroup.WrappedMonoid a) where
2223+ toJSON = toJSON1
2224+ {-# INLINE toJSON #-}
2225+
2226+ toEncoding = toEncoding1
2227+ {-# INLINE toEncoding #-}
2228+
2229+
2230+instance ToJSON1 Semigroup.Option where
2231+ liftToJSON t to' = liftToJSON t to' . Semigroup.getOption
2232+ {-# INLINE liftToJSON #-}
2233+
2234+ liftToEncoding t to' = liftToEncoding t to' . Semigroup.getOption
2235+ {-# INLINE liftToEncoding #-}
2236+
2237+instance ToJSON a => ToJSON (Semigroup.Option a) where
20752238 toJSON = toJSON1
20762239 {-# INLINE toJSON #-}
20772240
@@ -2082,6 +2245,13 @@ instance ToJSON a => ToJSON (Last a) where
20822245-- tagged
20832246-------------------------------------------------------------------------------
20842247
2248+instance ToJSON1 Proxy where
2249+ liftToJSON _ _ _ = Null
2250+ {-# INLINE liftToJSON #-}
2251+
2252+ liftToEncoding _ _ _ = E.null_
2253+ {-# INLINE liftToEncoding #-}
2254+
20852255instance ToJSON (Proxy a) where
20862256 toJSON _ = Null
20872257 {-# INLINE toJSON #-}
@@ -2090,6 +2260,13 @@ instance ToJSON (Proxy a) where
20902260 {-# INLINE toEncoding #-}
20912261
20922262
2263+instance ToJSON2 Tagged where
2264+ liftToJSON2 _ _ t _ (Tagged x) = t x
2265+ {-# INLINE liftToJSON2 #-}
2266+
2267+ liftToEncoding2 _ _ t _ (Tagged x) = t x
2268+ {-# INLINE liftToEncoding2 #-}
2269+
20932270instance ToJSON1 (Tagged a) where
20942271 liftToJSON t _ (Tagged x) = t x
20952272 {-# INLINE liftToJSON #-}
@@ -2104,7 +2281,6 @@ instance ToJSON b => ToJSON (Tagged a b) where
21042281 toEncoding = toEncoding1
21052282 {-# INLINE toEncoding #-}
21062283
2107−
21082284instance ToJSONKey b => ToJSONKey (Tagged a b) where
21092285 toJSONKey = contramapToJSONKeyFunction unTagged toJSONKey
21102286 toJSONKeyList = contramapToJSONKeyFunction (fmap unTagged) toJSONKeyList
@@ -2125,7 +2301,7 @@ instance (ToJSONKey a, ToJSON a) => ToJSONKey [a] where
21252301 toJSONKey = toJSONKeyList
21262302
21272303-------------------------------------------------------------------------------
2128−-- Tuple instances, see tuple-instances-to.hs
2304+-- Tuple instances
21292305-------------------------------------------------------------------------------
21302306
21312307instance ToJSON2 (,) where
@@ -2136,9 +2312,7 @@ instance ToJSON2 (,) where
21362312 return mv
21372313 {-# INLINE liftToJSON2 #-}
21382314
2139− liftToEncoding2 toA _ toB _ (a, b) = tuple $
2140− toA a >*<
2141− toB b
2315+ liftToEncoding2 toA _ toB _ (a, b) = E.list id [toA a, toB b]
21422316 {-# INLINE liftToEncoding2 #-}
21432317
21442318instance (ToJSON a) => ToJSON1 ((,) a) where
@@ -2162,10 +2336,11 @@ instance (ToJSON a) => ToJSON2 ((,,) a) where
21622336 return mv
21632337 {-# INLINE liftToJSON2 #-}
21642338
2165− liftToEncoding2 toB _ toC _ (a, b, c) = tuple $
2166− toEncoding a >*<
2167− toB b >*<
2168− toC c
2339+ liftToEncoding2 toB _ toC _ (a, b, c) = E.list id
2340+ [ toEncoding a
2341+ , toB b
2342+ , toC c
2343+ ]
21692344 {-# INLINE liftToEncoding2 #-}
21702345
21712346instance (ToJSON a, ToJSON b) => ToJSON1 ((,,) a b) where
@@ -2190,11 +2365,12 @@ instance (ToJSON a, ToJSON b) => ToJSON2 ((,,,) a b) where
21902365 return mv
21912366 {-# INLINE liftToJSON2 #-}
21922367
2193− liftToEncoding2 toC _ toD _ (a, b, c, d) = tuple $
2194− toEncoding a >*<
2195− toEncoding b >*<
2196− toC c >*<
2197− toD d
2368+ liftToEncoding2 toC _ toD _ (a, b, c, d) = E.list id
2369+ [ toEncoding a
2370+ , toEncoding b
2371+ , toC c
2372+ , toD d
2373+ ]
21982374 {-# INLINE liftToEncoding2 #-}
21992375
22002376instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON1 ((,,,) a b c) where
@@ -2220,12 +2396,13 @@ instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON2 ((,,,,) a b c) where
22202396 return mv
22212397 {-# INLINE liftToJSON2 #-}
22222398
2223− liftToEncoding2 toD _ toE _ (a, b, c, d, e) = tuple $
2224− toEncoding a >*<
2225− toEncoding b >*<
2226− toEncoding c >*<
2227− toD d >*<
2228− toE e
2399+ liftToEncoding2 toD _ toE _ (a, b, c, d, e) = E.list id
2400+ [ toEncoding a
2401+ , toEncoding b
2402+ , toEncoding c
2403+ , toD d
2404+ , toE e
2405+ ]
22292406 {-# INLINE liftToEncoding2 #-}
22302407
22312408instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON1 ((,,,,) a b c d) where
@@ -2252,13 +2429,14 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON2 ((,,,,,) a b c d) w
22522429 return mv
22532430 {-# INLINE liftToJSON2 #-}
22542431
2255− liftToEncoding2 toE _ toF _ (a, b, c, d, e, f) = tuple $
2256− toEncoding a >*<
2257− toEncoding b >*<
2258− toEncoding c >*<
2259− toEncoding d >*<
2260− toE e >*<
2261− toF f
2432+ liftToEncoding2 toE _ toF _ (a, b, c, d, e, f) = E.list id
2433+ [ toEncoding a
2434+ , toEncoding b
2435+ , toEncoding c
2436+ , toEncoding d
2437+ , toE e
2438+ , toF f
2439+ ]
22622440 {-# INLINE liftToEncoding2 #-}
22632441
22642442instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON1 ((,,,,,) a b c d e) where
@@ -2286,14 +2464,15 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON2 ((,,,,,,)
22862464 return mv
22872465 {-# INLINE liftToJSON2 #-}
22882466
2289− liftToEncoding2 toF _ toG _ (a, b, c, d, e, f, g) = tuple $
2290− toEncoding a >*<
2291− toEncoding b >*<
2292− toEncoding c >*<
2293− toEncoding d >*<
2294− toEncoding e >*<
2295− toF f >*<
2296− toG g
2467+ liftToEncoding2 toF _ toG _ (a, b, c, d, e, f, g) = E.list id
2468+ [ toEncoding a
2469+ , toEncoding b
2470+ , toEncoding c
2471+ , toEncoding d
2472+ , toEncoding e
2473+ , toF f
2474+ , toG g
2475+ ]
22972476 {-# INLINE liftToEncoding2 #-}
22982477
22992478instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON1 ((,,,,,,) a b c d e f) where
@@ -2322,15 +2501,16 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON2
23222501 return mv
23232502 {-# INLINE liftToJSON2 #-}
23242503
2325− liftToEncoding2 toG _ toH _ (a, b, c, d, e, f, g, h) = tuple $
2326− toEncoding a >*<
2327− toEncoding b >*<
2328− toEncoding c >*<
2329− toEncoding d >*<
2330− toEncoding e >*<
2331− toEncoding f >*<
2332− toG g >*<
2333− toH h
2504+ liftToEncoding2 toG _ toH _ (a, b, c, d, e, f, g, h) = E.list id
2505+ [ toEncoding a
2506+ , toEncoding b
2507+ , toEncoding c
2508+ , toEncoding d
2509+ , toEncoding e
2510+ , toEncoding f
2511+ , toG g
2512+ , toH h
2513+ ]
23342514 {-# INLINE liftToEncoding2 #-}
23352515
23362516instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g) => ToJSON1 ((,,,,,,,) a b c d e f g) where
@@ -2360,16 +2540,17 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g)
23602540 return mv
23612541 {-# INLINE liftToJSON2 #-}
23622542
2363− liftToEncoding2 toH _ toI _ (a, b, c, d, e, f, g, h, i) = tuple $
2364− toEncoding a >*<
2365− toEncoding b >*<
2366− toEncoding c >*<
2367− toEncoding d >*<
2368− toEncoding e >*<
2369− toEncoding f >*<
2370− toEncoding g >*<
2371− toH h >*<
2372− toI i
2543+ liftToEncoding2 toH _ toI _ (a, b, c, d, e, f, g, h, i) = E.list id
2544+ [ toEncoding a
2545+ , toEncoding b
2546+ , toEncoding c
2547+ , toEncoding d
2548+ , toEncoding e
2549+ , toEncoding f
2550+ , toEncoding g
2551+ , toH h
2552+ , toI i
2553+ ]
23732554 {-# INLINE liftToEncoding2 #-}
23742555
23752556instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h) => ToJSON1 ((,,,,,,,,) a b c d e f g h) where
@@ -2400,17 +2581,18 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
24002581 return mv
24012582 {-# INLINE liftToJSON2 #-}
24022583
2403− liftToEncoding2 toI _ toJ _ (a, b, c, d, e, f, g, h, i, j) = tuple $
2404− toEncoding a >*<
2405− toEncoding b >*<
2406− toEncoding c >*<
2407− toEncoding d >*<
2408− toEncoding e >*<
2409− toEncoding f >*<
2410− toEncoding g >*<
2411− toEncoding h >*<
2412− toI i >*<
2413− toJ j
2584+ liftToEncoding2 toI _ toJ _ (a, b, c, d, e, f, g, h, i, j) = E.list id
2585+ [ toEncoding a
2586+ , toEncoding b
2587+ , toEncoding c
2588+ , toEncoding d
2589+ , toEncoding e
2590+ , toEncoding f
2591+ , toEncoding g
2592+ , toEncoding h
2593+ , toI i
2594+ , toJ j
2595+ ]
24142596 {-# INLINE liftToEncoding2 #-}
24152597
24162598instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i) => ToJSON1 ((,,,,,,,,,) a b c d e f g h i) where
@@ -2442,18 +2624,19 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
24422624 return mv
24432625 {-# INLINE liftToJSON2 #-}
24442626
2445− liftToEncoding2 toJ _ toK _ (a, b, c, d, e, f, g, h, i, j, k) = tuple $
2446− toEncoding a >*<
2447− toEncoding b >*<
2448− toEncoding c >*<
2449− toEncoding d >*<
2450− toEncoding e >*<
2451− toEncoding f >*<
2452− toEncoding g >*<
2453− toEncoding h >*<
2454− toEncoding i >*<
2455− toJ j >*<
2456− toK k
2627+ liftToEncoding2 toJ _ toK _ (a, b, c, d, e, f, g, h, i, j, k) = E.list id
2628+ [ toEncoding a
2629+ , toEncoding b
2630+ , toEncoding c
2631+ , toEncoding d
2632+ , toEncoding e
2633+ , toEncoding f
2634+ , toEncoding g
2635+ , toEncoding h
2636+ , toEncoding i
2637+ , toJ j
2638+ , toK k
2639+ ]
24572640 {-# INLINE liftToEncoding2 #-}
24582641
24592642instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j) => ToJSON1 ((,,,,,,,,,,) a b c d e f g h i j) where
@@ -2486,19 +2669,20 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
24862669 return mv
24872670 {-# INLINE liftToJSON2 #-}
24882671
2489− liftToEncoding2 toK _ toL _ (a, b, c, d, e, f, g, h, i, j, k, l) = tuple $
2490− toEncoding a >*<
2491− toEncoding b >*<
2492− toEncoding c >*<
2493− toEncoding d >*<
2494− toEncoding e >*<
2495− toEncoding f >*<
2496− toEncoding g >*<
2497− toEncoding h >*<
2498− toEncoding i >*<
2499− toEncoding j >*<
2500− toK k >*<
2501− toL l
2672+ liftToEncoding2 toK _ toL _ (a, b, c, d, e, f, g, h, i, j, k, l) = E.list id
2673+ [ toEncoding a
2674+ , toEncoding b
2675+ , toEncoding c
2676+ , toEncoding d
2677+ , toEncoding e
2678+ , toEncoding f
2679+ , toEncoding g
2680+ , toEncoding h
2681+ , toEncoding i
2682+ , toEncoding j
2683+ , toK k
2684+ , toL l
2685+ ]
25022686 {-# INLINE liftToEncoding2 #-}
25032687
25042688instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k) => ToJSON1 ((,,,,,,,,,,,) a b c d e f g h i j k) where
@@ -2532,20 +2716,21 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
25322716 return mv
25332717 {-# INLINE liftToJSON2 #-}
25342718
2535− liftToEncoding2 toL _ toM _ (a, b, c, d, e, f, g, h, i, j, k, l, m) = tuple $
2536− toEncoding a >*<
2537− toEncoding b >*<
2538− toEncoding c >*<
2539− toEncoding d >*<
2540− toEncoding e >*<
2541− toEncoding f >*<
2542− toEncoding g >*<
2543− toEncoding h >*<
2544− toEncoding i >*<
2545− toEncoding j >*<
2546− toEncoding k >*<
2547− toL l >*<
2548− toM m
2719+ liftToEncoding2 toL _ toM _ (a, b, c, d, e, f, g, h, i, j, k, l, m) = E.list id
2720+ [ toEncoding a
2721+ , toEncoding b
2722+ , toEncoding c
2723+ , toEncoding d
2724+ , toEncoding e
2725+ , toEncoding f
2726+ , toEncoding g
2727+ , toEncoding h
2728+ , toEncoding i
2729+ , toEncoding j
2730+ , toEncoding k
2731+ , toL l
2732+ , toM m
2733+ ]
25492734 {-# INLINE liftToEncoding2 #-}
25502735
25512736instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l) => ToJSON1 ((,,,,,,,,,,,,) a b c d e f g h i j k l) where
@@ -2580,21 +2765,22 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
25802765 return mv
25812766 {-# INLINE liftToJSON2 #-}
25822767
2583− liftToEncoding2 toM _ toN _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n) = tuple $
2584− toEncoding a >*<
2585− toEncoding b >*<
2586− toEncoding c >*<
2587− toEncoding d >*<
2588− toEncoding e >*<
2589− toEncoding f >*<
2590− toEncoding g >*<
2591− toEncoding h >*<
2592− toEncoding i >*<
2593− toEncoding j >*<
2594− toEncoding k >*<
2595− toEncoding l >*<
2596− toM m >*<
2597− toN n
2768+ liftToEncoding2 toM _ toN _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n) = E.list id
2769+ [ toEncoding a
2770+ , toEncoding b
2771+ , toEncoding c
2772+ , toEncoding d
2773+ , toEncoding e
2774+ , toEncoding f
2775+ , toEncoding g
2776+ , toEncoding h
2777+ , toEncoding i
2778+ , toEncoding j
2779+ , toEncoding k
2780+ , toEncoding l
2781+ , toM m
2782+ , toN n
2783+ ]
25982784 {-# INLINE liftToEncoding2 #-}
25992785
26002786instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l, ToJSON m) => ToJSON1 ((,,,,,,,,,,,,,) a b c d e f g h i j k l m) where
@@ -2630,22 +2816,23 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
26302816 return mv
26312817 {-# INLINE liftToJSON2 #-}
26322818
2633− liftToEncoding2 toN _ toO _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) = tuple $
2634− toEncoding a >*<
2635− toEncoding b >*<
2636− toEncoding c >*<
2637− toEncoding d >*<
2638− toEncoding e >*<
2639− toEncoding f >*<
2640− toEncoding g >*<
2641− toEncoding h >*<
2642− toEncoding i >*<
2643− toEncoding j >*<
2644− toEncoding k >*<
2645− toEncoding l >*<
2646− toEncoding m >*<
2647− toN n >*<
2648− toO o
2819+ liftToEncoding2 toN _ toO _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) = E.list id
2820+ [ toEncoding a
2821+ , toEncoding b
2822+ , toEncoding c
2823+ , toEncoding d
2824+ , toEncoding e
2825+ , toEncoding f
2826+ , toEncoding g
2827+ , toEncoding h
2828+ , toEncoding i
2829+ , toEncoding j
2830+ , toEncoding k
2831+ , toEncoding l
2832+ , toEncoding m
2833+ , toN n
2834+ , toO o
2835+ ]
26492836 {-# INLINE liftToEncoding2 #-}
26502837
26512838instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g, ToJSON h, ToJSON i, ToJSON j, ToJSON k, ToJSON l, ToJSON m, ToJSON n) => ToJSON1 ((,,,,,,,,,,,,,,) a b c d e f g h i j k l m n) where
@@ -2660,27 +2847,26 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
26602847 toEncoding = toEncoding2
26612848 {-# INLINE toEncoding #-}
26622849
2663−-------------------------------------------------------------------------------
2664−-- pre-bytestring-0.10 compatibility
2665−-------------------------------------------------------------------------------
2850+--------------------------------------------------------------------------------
26662851
2667−{-# INLINE lazyToStrictByteString #-}
2668−lazyToStrictByteString :: L.ByteString -> S.ByteString
2669−#if MIN_VERSION_bytestring(0,10,0)
2670−lazyToStrictByteString = L.toStrict
2671−#else
2672−lazyToStrictByteString = packChunks
2852+-- | Wrap a list of pairs as an object.
2853+class Monoid pairs => FromPairs enc pairs | enc -> pairs where
2854+ fromPairs :: pairs -> enc
26732855
2674−-- packChunks is taken from the blaze-builder package.
2856+instance (a ~ Value) => FromPairs (Encoding' a) Series where
2857+ fromPairs = E.pairs
26752858
2676−-- | Pack the chunks of a lazy bytestring into a single strict bytestring.
2677−packChunks :: L.ByteString -> S.ByteString
2678−packChunks lbs = do
2679− S.unsafeCreate (fromIntegral $ L.length lbs) (copyChunks lbs)
2680− where
2681− copyChunks !L.Empty !_pf = return ()
2682− copyChunks !(L.Chunk (S.PS fpbuf o l) lbs') !pf = do
2683− withForeignPtr fpbuf $ \pbuf ->
2684− copyBytes pf (pbuf `plusPtr` o) l
2685− copyChunks lbs' (pf `plusPtr` l)
2686−#endif
2859+instance FromPairs Value (DList Pair) where
2860+ fromPairs = object . toList
2861+
2862+-- | Like 'KeyValue' but the value is already converted to JSON
2863+-- ('Value' or 'Encoding'), and the result actually represents lists of pairs
2864+-- so it can be readily concatenated.
2865+class Monoid kv => KeyValuePair v kv where
2866+ pair :: String -> v -> kv
2867+
2868+instance (v ~ Value) => KeyValuePair v (DList Pair) where
2869+ pair k v = DList.singleton (pack k .= v)
2870+
2871+instance (e ~ Encoding) => KeyValuePair e Series where
2872+ pair = E.pairStr