@@ -1,29 +1,27 @@
1−{-# LANGUAGE CPP #-}
2−{-# LANGUAGE DataKinds #-}
3−{-# LANGUAGE DefaultSignatures #-}
4−{-# LANGUAGE FlexibleContexts #-}
5−{-# LANGUAGE FlexibleInstances #-}
6−{-# LANGUAGE GADTs #-}
7−{-# LANGUAGE MultiParamTypeClasses #-}
8−{-# LANGUAGE NamedFieldPuns #-}
9−{-# LANGUAGE OverloadedStrings #-}
10−{-# LANGUAGE PatternGuards #-}
11−{-# LANGUAGE RecordWildCards #-}
12−{-# LANGUAGE ScopedTypeVariables #-}
13−{-# LANGUAGE TypeOperators #-}
14−{-# LANGUAGE TypeSynonymInstances #-}
15−{-# LANGUAGE UndecidableInstances #-}
16−
17−#if __GLASGOW_HASKELL__ >= 706
18−{-# LANGUAGE PolyKinds #-}
19−#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 #-}
2016
2117#include "overlapping-compat.h"
18+#include "incoherent-compat.h"
2219
2320-- TODO: Drop this when we remove support for Data.Attoparsec.Number
2421{-# OPTIONS_GHC -fno-warn-deprecations #-}
2522
26−module Data.Aeson.Types.ToJSON (
23+module Data.Aeson.Types.ToJSON
24+ (
2725 -- * Core JSON classes
2826 ToJSON(..)
2927 -- * Liftings to unary and binary type constructors
@@ -35,7 +33,7 @@ module Data.Aeson.Types.ToJSON (
3533 , toEncoding2
3634 -- * Generic JSON classes
3735 , GToJSON(..)
38− , GToEncoding(..)
36+ , ToArgs(..)
3937 , genericToJSON
4038 , genericToEncoding
4139 , genericLiftToJSON
@@ -43,84 +41,107 @@ module Data.Aeson.Types.ToJSON (
4341 -- * Classes and types for map keys
4442 , ToJSONKey(..)
4543 , ToJSONKeyFunction(..)
44+ , toJSONKeyText
4645 , contramapToJSONKeyFunction
46+
47+ , GToJSONKey()
48+ , genericToJSONKey
49+
4750 -- * Object key-value pairs
4851 , KeyValue(..)
52+ , KeyValuePair(..)
53+ , FromPairs(..)
4954 -- * Functions needed for documentation
5055 -- * Encoding functions
5156 , listEncoding
5257 , listValue
5358 ) where
5459
55−import Prelude ()
5660import Prelude.Compat
5761
58−import Data.Aeson.Encoding.Internal (Encoding (..), Series, dict, emptyArray_,
59− tuple, (>*<))
60−import Data.Aeson.Functions (mapHashKeyVal, mapKeyVal)
61−import Data.Aeson.Types.Generic
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 ((>*<))
66+import Data.Aeson.Internal.Functions (mapHashKeyVal, mapKeyVal)
67+import Data.Aeson.Types.Generic (AllNullary, False, IsRecord, One, ProductSize, Tagged2(..), True, Zero, productSize)
6268import Data.Aeson.Types.Internal
63−
64−-- We need internal here for generic deriving
65−import qualified Data.Aeson.Encoding.Internal as E
66−
67−import Control.Applicative (Const (..))
68−import Control.Monad.ST (ST)
69−import Data.Attoparsec.Number (Number (..))
70−import Data.Bits (unsafeShiftR)
71−import Data.DList (DList)
72−import Data.Fixed (Fixed, HasResolution)
73−import Data.Foldable (toList)
74−import Data.Functor.Identity (Identity (..))
75−import Data.Int (Int16, Int32, Int64, Int8)
76−import Data.List (intersperse)
77−import Data.List.NonEmpty (NonEmpty (..))
78−import Data.Monoid (Dual (..), First (..), Last (..), (<>))
79−import Data.Proxy (Proxy (..))
80−import Data.Ratio (Ratio, denominator, numerator)
81−import Data.Scientific (Scientific)
82−import Data.Tagged (Tagged (..))
83−import Data.Text (Text, pack)
84−import Data.Time (Day, LocalTime, NominalDiffTime, TimeOfDay,
85− UTCTime, ZonedTime)
86−import Data.Time.Format (FormatTime, formatTime)
87−import Data.Time.Locale.Compat (defaultTimeLocale)
88−import Data.Vector (Vector)
89−import Data.Version (Version, showVersion)
90−import Data.Word (Word16, Word32, Word64, Word8)
91−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 (..))
9299import GHC.Generics
93−import Numeric.Natural (Natural)
94−
95−import qualified Data.ByteString.Builder as B (toLazyByteString)
96−import qualified Data.ByteString.Lazy as L
97−import qualified Data.DList as DList
98−import qualified Data.HashMap.Strict as H
99−import qualified Data.HashSet as HashSet
100−import qualified Data.IntMap as IntMap
101−import qualified Data.IntSet as IntSet
102−import qualified Data.List.NonEmpty as NE
103−import qualified Data.Map as M
104−import qualified Data.Scientific as Scientific
105−import qualified Data.Sequence as Seq
106−import qualified Data.Set as Set
107−import qualified Data.Text as T
108−import qualified Data.Text.Encoding as T
109−import qualified Data.Text.Lazy as LT
110−import qualified Data.Tree as Tree
111−import qualified Data.Vector as V
112−import qualified Data.Vector.Generic as VG
113−import qualified Data.Vector.Mutable as VM
114−import qualified Data.Vector.Primitive as VP
115−import qualified Data.Vector.Storable as VS
116−import qualified Data.Vector.Unboxed as VU
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
124+import qualified Data.Vector.Primitive as VP
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
130+
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
135+
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
141+#endif
117142
118143toJSONPair :: (a -> Value) -> (b -> Value) -> (a, b) -> Value
119−toJSONPair keySerialiser valSerializer (a, b) = Array $ V.create $ do
120− mv <- VM.unsafeNew 2
121− VM.unsafeWrite mv 0 (keySerialiser a)
122− VM.unsafeWrite mv 1 (valSerializer b)
123− return mv
144+toJSONPair a b = liftToJSON2 a (listValue a) b (listValue b)
124145{-# INLINE toJSONPair #-}
125146
126147realFloatToJSON :: RealFloat a => a -> Value
@@ -135,51 +156,53 @@ realFloatToJSON d
135156
136157-- | Class of generic representation types that can be converted to
137158-- JSON.
138−class GToJSON arity f where
159+class GToJSON enc arity f where
139160 -- | This method (applied to 'defaultOptions') is used as the
140− -- default generic implementation of 'toJSON' (if the @arity@ is 'Zero')
141− -- or 'liftToJSON' (if the @arity@ is 'One').
142− gToJSON :: Options -> Proxy arity
143− -> (a -> Value) -> ([a] -> Value) -> f a -> Value
144−
145−-- | Class of generic representation types that can be converted to
146−-- a JSON 'Encoding'.
147−class GToEncoding arity f where
148− -- | This method (applied to 'defaultOptions') can be used as the
149− -- default generic implementation of 'toEncoding' (if the @arity@ is 'Zero')
150− -- or 'liftToEncoding' (if the @arity@ is 'One').
151− gToEncoding :: Options -> Proxy arity
152− -> (a -> Encoding) -> ([a] -> Encoding) -> 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
169+
170+-- | A 'ToArgs' value either stores nothing (for 'ToJSON') or it stores the two
171+-- function arguments that encode occurrences of the type parameter (for
172+-- 'ToJSON1').
173+data ToArgs res arity a where
174+ NoToArgs :: ToArgs res Zero a
175+ To1Args :: (a -> res) -> ([a] -> res) -> ToArgs res One a
153176
154177-- | A configurable generic JSON creator. This function applied to
155178-- 'defaultOptions' is used as the default for 'toJSON' when the type
156179-- is an instance of 'Generic'.
157−genericToJSON :: (Generic a, GToJSON Zero (Rep a))
180+genericToJSON :: (Generic a, GToJSON Value Zero (Rep a))
158181 => Options -> a -> Value
159−genericToJSON opts = gToJSON opts proxyZero undefined undefined . from
182+genericToJSON opts = gToJSON opts NoToArgs . from
160183
161184-- | A configurable generic JSON creator. This function applied to
162185-- 'defaultOptions' is used as the default for 'liftToJSON' when the type
163186-- is an instance of 'Generic1'.
164−genericLiftToJSON :: (Generic1 f, GToJSON One (Rep1 f))
187+genericLiftToJSON :: (Generic1 f, GToJSON Value One (Rep1 f))
165188 => Options -> (a -> Value) -> ([a] -> Value)
166189 -> f a -> Value
167−genericLiftToJSON opts tj tjl = gToJSON opts proxyOne tj tjl . from1
190+genericLiftToJSON opts tj tjl = gToJSON opts (To1Args tj tjl) . from1
168191
169192-- | A configurable generic JSON encoder. This function applied to
170193-- 'defaultOptions' is used as the default for 'toEncoding' when the type
171194-- is an instance of 'Generic'.
172−genericToEncoding :: (Generic a, GToEncoding Zero (Rep a))
195+genericToEncoding :: (Generic a, GToJSON Encoding Zero (Rep a))
173196 => Options -> a -> Encoding
174−genericToEncoding opts = gToEncoding opts proxyZero undefined undefined . from
197+genericToEncoding opts = gToJSON opts NoToArgs . from
175198
176199-- | A configurable generic JSON encoder. This function applied to
177200-- 'defaultOptions' is used as the default for 'liftToEncoding' when the type
178201-- is an instance of 'Generic1'.
179−genericLiftToEncoding :: (Generic1 f, GToEncoding One (Rep1 f))
202+genericLiftToEncoding :: (Generic1 f, GToJSON Encoding One (Rep1 f))
180203 => Options -> (a -> Encoding) -> ([a] -> Encoding)
181204 -> f a -> Encoding
182−genericLiftToEncoding opts te tel = gToEncoding opts proxyOne te tel . from1
205+genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
183206
184207-------------------------------------------------------------------------------
185208-- Class
@@ -187,6 +210,9 @@ genericLiftToEncoding opts te tel = gToEncoding opts proxyOne te tel . from1
187210
188211-- | A type that can be converted to JSON.
189212--
213+-- Instances in general /must/ specify 'toJSON' and /should/ (but don't need
214+-- to) specify 'toEncoding'.
215+--
190216-- An example type and instance:
191217--
192218-- @
@@ -195,10 +221,10 @@ genericLiftToEncoding opts te tel = gToEncoding opts proxyOne te tel . from1
195221--
196222-- data Coord = Coord { x :: Double, y :: Double }
197223--
198−-- instance ToJSON Coord where
199−-- toJSON (Coord x y) = 'object' [\"x\" '.=' x, \"y\" '.=' y]
224+-- instance 'ToJSON' Coord where
225+-- 'toJSON' (Coord x y) = 'object' [\"x\" '.=' x, \"y\" '.=' y]
200226--
201−-- toEncoding (Coord x y) = 'pairs' (\"x\" '.=' x '<>' \"y\" '.=' y)
227+-- 'toEncoding' (Coord x y) = 'pairs' (\"x\" '.=' x '<>' \"y\" '.=' y)
202228-- @
203229--
204230-- Instead of manually writing your 'ToJSON' instance, there are two options
@@ -206,17 +232,15 @@ genericLiftToEncoding opts te tel = gToEncoding opts proxyOne te tel . from1
206232--
207233-- * "Data.Aeson.TH" provides Template Haskell functions which will derive an
208234-- instance at compile time. The generated instance is optimized for your type
209−-- so will probably be more efficient than the following two options:
235+-- so it will probably be more efficient than the following option.
210236--
211237-- * The compiler can provide a default generic implementation for
212238-- 'toJSON'.
213239--
214240-- To use the second, simply add a @deriving 'Generic'@ clause to your
215−-- datatype and declare a 'ToJSON' instance for your datatype without giving
216−-- definitions for 'toJSON' or 'toEncoding'.
217−--
218−-- For example, the previous example can be simplified to a more
219−-- 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):
220244--
221245-- @
222246-- {-\# LANGUAGE DeriveGeneric \#-}
@@ -225,35 +249,46 @@ genericLiftToEncoding opts te tel = gToEncoding opts proxyOne te tel . from1
225249--
226250-- data Coord = Coord { x :: Double, y :: Double } deriving 'Generic'
227251--
228−-- instance ToJSON Coord where
229−-- toEncoding = 'genericToEncoding' 'defaultOptions'
252+-- instance 'ToJSON' Coord where
253+-- 'toEncoding' = 'genericToEncoding' 'defaultOptions'
230254-- @
231255--
232−-- Why do we provide an implementation for 'toEncoding' here? The
233−-- 'toEncoding' function is a relatively new addition to this class.
234−-- To allow users of older versions of this library to upgrade without
235−-- having to edit all of their instances or encounter surprising
236−-- incompatibilities, the default implementation of 'toEncoding' uses
237−-- 'toJSON'. This produces correct results, but since it performs an
238−-- intermediate conversion to a 'Value', it will be less efficient
239−-- than directly emitting an 'Encoding'. Our one-liner definition of
240−-- 'toEncoding' above bypasses the intermediate 'Value'.
241−--
242−-- If @DefaultSignatures@ doesn't give exactly the results you want,
243−-- you can customize the generic encoding with only a tiny amount of
244−-- effort, using 'genericToJSON' and 'genericToEncoding' with your
245−-- preferred 'Options':
256+-- If on the other hand you wish to customize the generic decoding, you have
257+-- to implement both methods:
246258--
247259-- @
248−-- instance ToJSON Coord where
249−-- toJSON = 'genericToJSON' 'defaultOptions'
250−-- 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
251267-- @
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.)
252287class ToJSON a where
253288 -- | Convert a Haskell value to a JSON-friendly intermediate type.
254289 toJSON :: a -> Value
255290
256− default toJSON :: (Generic a, GToJSON Zero (Rep a)) => a -> Value
291+ default toJSON :: (Generic a, GToJSON Value Zero (Rep a)) => a -> Value
257292 toJSON = genericToJSON defaultOptions
258293
259294 -- | Encode a Haskell value as JSON.
@@ -270,8 +305,8 @@ class ToJSON a where
270305 -- extension, and then have GHC generate a method body as follows.
271306 --
272307 -- @
273− -- instance ToJSON Coord where
274− -- toEncoding = 'genericToEncoding' 'defaultOptions'
308+ -- instance 'ToJSON' Coord where
309+ -- 'toEncoding' = 'genericToEncoding' 'defaultOptions'
275310 -- @
276311
277312 toEncoding :: a -> Encoding
@@ -303,26 +338,206 @@ instance KeyValue Pair where
303338 name .= value = (name, toJSON value)
304339 {-# INLINE (.=) #-}
305340
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+
306348-------------------------------------------------------------------------------
307349-- Classes and types for map keys
308350-------------------------------------------------------------------------------
309351
352+-- | Typeclass for types that can be used as the key of a map-like container
353+-- (like 'Map' or 'HashMap'). For example, since 'Text' has a 'ToJSONKey'
354+-- instance and 'Char' has a 'ToJSON' instance, we can encode a value of
355+-- type 'Map' 'Text' 'Char':
356+--
357+-- >>> LBC8.putStrLn $ encode $ Map.fromList [("foo" :: Text, 'a')]
358+-- {"foo":"a"}
359+--
360+-- Since 'Int' also has a 'ToJSONKey' instance, we can similarly write:
361+--
362+-- >>> LBC8.putStrLn $ encode $ Map.fromList [(5 :: Int, 'a')]
363+-- {"5":"a"}
364+--
365+-- JSON documents only accept strings as object keys. For any type
366+-- from @base@ that has a natural textual representation, it can be
367+-- expected that its 'ToJSONKey' instance will choose that representation.
368+--
369+-- For data types that lack a natural textual representation, an alternative
370+-- is provided. The map-like container is represented as a JSON array
371+-- instead of a JSON object. Each value in the array is an array with
372+-- exactly two values. The first is the key and the second is the value.
373+--
374+-- For example, values of type '[Text]' cannot be encoded to a
375+-- string, so a 'Map' with keys of type '[Text]' is encoded as follows:
376+--
377+-- >>> LBC8.putStrLn $ encode $ Map.fromList [(["foo","bar","baz" :: Text], 'a')]
378+-- [[["foo","bar","baz"],"a"]]
379+--
380+-- The default implementation of 'ToJSONKey' chooses this method of
381+-- encoding a key, using the 'ToJSON' instance of the type.
382+--
383+-- To use your own data type as the key in a map, all that is needed
384+-- is to write a 'ToJSONKey' (and possibly a 'FromJSONKey') instance
385+-- for it. If the type cannot be trivially converted to and from 'Text',
386+-- it is recommended that 'ToJSONKeyValue' is used. Since the default
387+-- implementations of the typeclass methods can build this from a
388+-- 'ToJSON' instance, there is nothing that needs to be written:
389+--
390+-- > data Foo = Foo { fooAge :: Int, fooName :: Text }
391+-- > deriving (Eq,Ord,Generic)
392+-- > instance ToJSON Foo
393+-- > instance ToJSONKey Foo
394+--
395+-- That's it. We can now write:
396+--
397+-- >>> let m = Map.fromList [(Foo 4 "bar",'a'),(Foo 6 "arg",'b')]
398+-- >>> LBC8.putStrLn $ encode m
399+-- [[{"fooName":"bar","fooAge":4},"a"],[{"fooName":"arg","fooAge":6},"b"]]
400+--
401+-- The next case to consider is if we have a type that is a
402+-- newtype wrapper around 'Text'. The recommended approach is to use
403+-- generalized newtype deriving:
404+--
405+-- > newtype RecordId = RecordId { getRecordId :: Text }
406+-- > deriving (Eq,Ord,ToJSONKey)
407+--
408+-- Then we may write:
409+--
410+-- >>> LBC8.putStrLn $ encode $ Map.fromList [(RecordId "abc",'a')]
411+-- {"abc":"a"}
412+--
413+-- Simple sum types are a final case worth considering. Suppose we have:
414+--
415+-- > data Color = Red | Green | Blue
416+-- > deriving (Show,Read,Eq,Ord)
417+--
418+-- It is possible to get the 'ToJSONKey' instance for free as we did
419+-- with 'Foo'. However, in this case, we have a natural way to go to
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+--
432+-- The 'Show' instance can be used to help write 'ToJSONKey':
433+--
434+-- > instance ToJSONKey Color where
435+-- > toJSONKey = ToJSONKeyText f g
436+-- > where f = Text.pack . show
437+-- > g = text . Text.pack . show
438+-- > -- text function is from Data.Aeson.Encoding
439+--
440+-- The situation of needing to turning function @a -> Text@ into
441+-- a 'ToJSONKeyFunction' is common enough that a special combinator
442+-- is provided for it. The above instance can be rewritten as:
443+--
444+-- > instance ToJSONKey Color where
445+-- > toJSONKey = toJSONKeyText (Text.pack . show)
446+--
447+-- The performance of the above instance can be improved by
448+-- not using 'String' as an intermediate step when converting to
449+-- 'Text'. One option for improving performance would be to use
450+-- template haskell machinery from the @text-show@ package. However,
451+-- even with the approach, the 'Encoding' (a wrapper around a bytestring
452+-- builder) is generated by encoding the 'Text' to a 'ByteString',
453+-- an intermediate step that could be avoided. The fastest possible
454+-- implementation would be:
455+--
456+-- > -- Assuming that OverloadedStrings is enabled
457+-- > instance ToJSONKey Color where
458+-- > toJSONKey = ToJSONKeyText f g
459+-- > where f x = case x of {Red -> "Red";Green ->"Green";Blue -> "Blue"}
460+-- > g x = case x of {Red -> text "Red";Green -> text "Green";Blue -> text "Blue"}
461+-- > -- text function is from Data.Aeson.Encoding
462+--
463+-- This works because GHC can lift the encoded values out of the case
464+-- statements, which means that they are only evaluated once. This
465+-- approach should only be used when there is a serious need to
466+-- maximize performance.
467+
310468class ToJSONKey a where
469+ -- | Strategy for rendering the key for a map-like container.
311470 toJSONKey :: ToJSONKeyFunction a
312471 default toJSONKey :: ToJSON a => ToJSONKeyFunction a
313− toJSONKey = ToJSONKeyValue (toJSON, toEncoding)
472+ toJSONKey = ToJSONKeyValue toJSON toEncoding
473+
474+ -- | This is similar in spirit to the 'showsList' method of 'Show'.
475+ -- It makes it possible to give 'String' keys special treatment
476+ -- without using @OverlappingInstances@. End users should always
477+ -- be able to use the default implementation of this method.
314478 toJSONKeyList :: ToJSONKeyFunction [a]
315479 default toJSONKeyList :: ToJSON a => ToJSONKeyFunction [a]
316− toJSONKeyList = ToJSONKeyValue (toJSON, toEncoding)
480+ toJSONKeyList = ToJSONKeyValue toJSON toEncoding
317481
318482data ToJSONKeyFunction a
319− = ToJSONKeyText (a -> Text, a -> Encoding)
320− | ToJSONKeyValue (a -> Value, a -> Encoding)
483+ = ToJSONKeyText !(a -> Text) !(a -> Encoding' Text)
484+ -- ^ key is encoded to string, produces object
485+ | ToJSONKeyValue !(a -> Value) !(a -> Encoding)
486+ -- ^ key is encoded to value, produces array
487+
488+-- | Helper for creating textual keys.
489+--
490+-- @
491+-- instance 'ToJSONKey' MyKey where
492+-- 'toJSONKey' = 'toJSONKeyText' myKeyToText
493+-- where
494+-- myKeyToText = Text.pack . show -- or showt from text-show
495+-- @
496+toJSONKeyText :: (a -> Text) -> ToJSONKeyFunction a
497+toJSONKeyText f = ToJSONKeyText f (E.text . f)
321498
499+-- | TODO: should this be exported?
500+toJSONKeyTextEnc :: (a -> Encoding' Text) -> ToJSONKeyFunction a
501+toJSONKeyTextEnc e = ToJSONKeyText tot e
502+ where
503+ -- TODO: dropAround is also used in stringEncoding, which is unfortunate atm
504+ tot = T.dropAround (== '"')
505+ . T.decodeLatin1
506+ . L.toStrict
507+ . E.encodingToLazyByteString
508+ . e
509+
510+instance Contravariant ToJSONKeyFunction where
511+ contramap = contramapToJSONKeyFunction
512+
513+-- | Contravariant map, as 'ToJSONKeyFunction' is a contravariant functor.
322514contramapToJSONKeyFunction :: (b -> a) -> ToJSONKeyFunction a -> ToJSONKeyFunction b
323515contramapToJSONKeyFunction h x = case x of
324− ToJSONKeyText (f,g) -> ToJSONKeyText (f . h, g . h)
325− ToJSONKeyValue (f,g) -> ToJSONKeyValue (f . h, g . h)
516+ ToJSONKeyText f g -> ToJSONKeyText (f . h) (g . h)
517+ ToJSONKeyValue f g -> ToJSONKeyValue (f . h) (g . h)
518+
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
326541
327542-------------------------------------------------------------------------------
328543-- Lifings of FromJSON and ToJSON to unary and binary type constructors
@@ -336,7 +551,7 @@ contramapToJSONKeyFunction h x = case x of
336551--
337552-- * "Data.Aeson.TH" provides Template Haskell functions which will derive an
338553-- instance at compile time. The generated instance is optimized for your type
339−-- so will probably be more efficient than the following two options:
554+-- so it will probably be more efficient than the following option.
340555--
341556-- * The compiler can provide a default generic implementation for
342557-- 'toJSON1'.
@@ -354,23 +569,29 @@ contramapToJSONKeyFunction h x = case x of
354569--
355570-- data Pair = Pair { pairFst :: a, pairSnd :: b } deriving 'Generic1'
356571--
357−-- instance ToJSON a => ToJSON1 (Pair a)
572+-- instance 'ToJSON' a => 'ToJSON1' (Pair a)
358573-- @
359574--
360−-- If @DefaultSignatures@ doesn't give exactly the results you want,
575+-- If the default implementation doesn't give exactly the results you want,
361576-- you can customize the generic encoding with only a tiny amount of
362577-- effort, using 'genericLiftToJSON' and 'genericLiftToEncoding' with
363578-- your preferred 'Options':
364579--
365580-- @
366−-- instance ToJSON a => ToJSON1 (Pair a) where
367−-- liftToJSON = 'genericLiftToJSON' 'defaultOptions'
368−-- 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
369588-- @
589+--
590+-- See also 'ToJSON'.
370591class ToJSON1 f where
371592 liftToJSON :: (a -> Value) -> ([a] -> Value) -> f a -> Value
372593
373− default liftToJSON :: (Generic1 f, GToJSON One (Rep1 f))
594+ default liftToJSON :: (Generic1 f, GToJSON Value One (Rep1 f))
374595 => (a -> Value) -> ([a] -> Value) -> f a -> Value
375596 liftToJSON = genericLiftToJSON defaultOptions
376597
@@ -379,7 +600,7 @@ class ToJSON1 f where
379600
380601 liftToEncoding :: (a -> Encoding) -> ([a] -> Encoding) -> f a -> Encoding
381602
382− default liftToEncoding :: (Generic1 f, GToEncoding One (Rep1 f))
603+ default liftToEncoding :: (Generic1 f, GToJSON Encoding One (Rep1 f))
383604 => (a -> Encoding) -> ([a] -> Encoding)
384605 -> f a -> Encoding
385606 liftToEncoding = genericLiftToEncoding defaultOptions
@@ -427,9 +648,25 @@ toEncoding2 = liftToEncoding2 toEncoding toEncodingList toEncoding toEncodingLis
427648-- Encoding functions
428649-------------------------------------------------------------------------------
429650
651+-- | Helper function to use with 'liftToEncoding'.
652+-- Useful when writing own 'ToJSON1' instances.
653+--
654+-- @
655+-- newtype F a = F [a]
656+--
657+-- -- This instance encodes 'String' as an array of chars
658+-- instance 'ToJSON1' F where
659+-- 'liftToJSON' tj _ (F xs) = 'liftToJSON' tj ('listValue' tj) xs
660+-- 'liftToEncoding' te _ (F xs) = 'liftToEncoding' te ('listEncoding' te) xs
661+--
662+-- instance 'Data.Aeson.FromJSON.FromJSON1' F where
663+-- 'Data.Aeson.FromJSON.liftParseJSON' p _ v = F \<$\> 'Data.Aeson.FromJSON.liftParseJSON' p ('Data.Aeson.FromJSON.listParser' p) v
664+-- @
430665listEncoding :: (a -> Encoding) -> [a] -> Encoding
431666listEncoding = E.list
667+{-# INLINE listEncoding #-}
432668
669+-- | Helper function to use with 'liftToJSON', see 'listEncoding'.
433670listValue :: (a -> Value) -> [a] -> Value
434671listValue f = Array . V.fromList . map f
435672{-# INLINE listValue #-}
@@ -448,6 +685,11 @@ instance ToJSON1 [] where
448685 {-# INLINE liftToEncoding #-}
449686
450687instance (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+
451693 toJSON = toJSON1
452694 {-# INLINE toJSON #-}
453695
@@ -458,283 +700,260 @@ instance (ToJSON a) => ToJSON [a] where
458700-- Generic toJSON / toEncoding
459701-------------------------------------------------------------------------------
460702
703+instance OVERLAPPABLE_ (GToJSON enc arity a) => GToJSON enc arity (M1 i c a) where
704+ -- Meta-information, which is not handled elsewhere, is ignored:
705+ gToJSON opts targs = gToJSON opts targs . unM1
706+ {-# INLINE gToJSON #-}
707+
708+instance GToJSON enc One Par1 where
709+ -- Direct occurrences of the last type parameter are encoded with the
710+ -- function passed in as an argument:
711+ 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 #-}
732+
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+
461744--------------------------------------------------------------------------------
462745-- Generic toJSON
463746
464−instance OVERLAPPABLE_ (GToJSON arity a) => GToJSON arity (M1 i c a) where
465− -- Meta-information, which is not handled elsewhere, is ignored:
466− gToJSON opts pa tj tjl = gToJSON opts pa tj tjl . unM1
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.
467750
468−instance (ToJSON a) => GToJSON arity (K1 i a) where
469− -- Constant values are encoded using their ToJSON instance:
470− gToJSON _opts _ _ _ = toJSON . unK1
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 #-}
471756
472−instance GToJSON One Par1 where
473− -- Direct occurrences of the last type parameter are encoded with the
474− -- function passed in as an argument:
475− gToJSON _opts _ tj _ = tj . unPar1
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 #-}
476761
477−instance (ToJSON1 f) => GToJSON One (Rec1 f) where
762+instance ToJSON1 f => GToJSON Value One (Rec1 f) where
478763 -- Recursive occurrences of the last type parameter are encoded using their
479764 -- ToJSON1 instance:
480− gToJSON _opts _ tj tjl = liftToJSON tj tjl . unRec1
765+ gToJSON _opts (To1Args tj tjl) = liftToJSON tj tjl . unRec1
766+ {-# INLINE gToJSON #-}
481767
482−instance GToJSON arity U1 where
768+instance GToJSON Value arity U1 where
483769 -- Empty constructors are encoded to an empty array:
484− gToJSON _opts _ _ _ _ = emptyArray
485−
486−instance (ConsToJSON arity a) => GToJSON arity (C1 c a) where
487− -- Constructors need to be encoded differently depending on whether they're
488− -- a record or not. This distinction is made by 'consToJSON':
489− gToJSON opts pa tj tjl = consToJSON opts pa tj tjl . unM1
770+ gToJSON _opts _ _ = emptyArray
771+ {-# INLINE gToJSON #-}
490772
491773instance ( WriteProduct arity a, WriteProduct arity b
492774 , ProductSize a, ProductSize b
493− ) => GToJSON arity (a :*: b) where
775+ ) => GToJSON Value arity (a :*: b)
776+ where
494777 -- Products are encoded to an array. Here we allocate a mutable vector of
495778 -- the same size as the product and write the product's elements to it using
496779 -- 'writeProduct':
497− gToJSON opts pa tj tjl p =
780+ gToJSON opts targs p =
498781 Array $ V.create $ do
499782 mv <- VM.unsafeNew lenProduct
500− writeProduct opts pa mv 0 lenProduct tj tjl p
783+ writeProduct opts targs mv 0 lenProduct p
501784 return mv
502785 where
503786 lenProduct = (unTagged2 :: Tagged2 (a :*: b) Int -> Int)
504787 productSize
788+ {-# INLINE gToJSON #-}
505789
506−instance ( AllNullary (a :+: b) allNullary
507− , SumToJSON arity (a :+: b) allNullary
508− ) => GToJSON arity (a :+: b) where
509− -- If all constructors of a sum datatype are nullary and the
510− -- 'allNullaryToStringTag' option is set they are encoded to
511− -- strings. This distinction is made by 'sumToJSON':
512− gToJSON opts pa tj tjl = (unTagged :: Tagged allNullary Value -> Value)
513− . sumToJSON opts pa tj tjl
514−
515−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
516794 -- If an occurrence of the last type parameter is nested inside two
517795 -- composed types, it is encoded by using the outermost type's ToJSON1
518796 -- instance to generically encode the innermost type:
519− gToJSON opts pa tj tjl =
520− let gtj = gToJSON opts pa tj tjl in
797+ gToJSON opts targs =
798+ let gtj = gToJSON opts targs in
521799 liftToJSON gtj (listValue gtj) . unComp1
800+ {-# INLINE gToJSON #-}
522801
523802--------------------------------------------------------------------------------
524803-- Generic toEncoding
525804
526−instance OVERLAPPABLE_ (GToEncoding arity a) => GToEncoding arity (M1 i c a) where
527− -- Meta-information, which is not handled elsewhere, is ignored:
528− gToEncoding opts pa te tel = gToEncoding opts pa te tel . unM1
529−
530−instance (ToJSON a) => GToEncoding arity (K1 i a) where
805+instance ToJSON a => GToJSON Encoding arity (K1 i a) where
531806 -- Constant values are encoded using their ToJSON instance:
532− gToEncoding _opts _ _ _ = toEncoding . unK1
533−
534−instance GToEncoding One Par1 where
535− -- Direct occurrences of the last type parameter are encoded with the
536− -- function passed in as an argument:
537− gToEncoding _opts _ te _ = te . unPar1
807+ gToJSON _opts _ = toEncoding . unK1
808+ {-# INLINE gToJSON #-}
538809
539−instance (ToJSON1 f) => GToEncoding One (Rec1 f) where
810+instance ToJSON1 f => GToJSON Encoding One (Rec1 f) where
540811 -- Recursive occurrences of the last type parameter are encoded using their
541812 -- ToEncoding1 instance:
542− gToEncoding _opts _ te tel = liftToEncoding te tel . unRec1
813+ gToJSON _opts (To1Args te tel) = liftToEncoding te tel . unRec1
814+ {-# INLINE gToJSON #-}
543815
544−instance GToEncoding arity U1 where
816+instance GToJSON Encoding arity U1 where
545817 -- Empty constructors are encoded to an empty array:
546− gToEncoding _opts _ _ _ _ = E.emptyArray_
547−
548−instance (ConsToEncoding arity a) => GToEncoding arity (C1 c a) where
549− -- Constructors need to be encoded differently depending on whether they're
550− -- a record or not. This distinction is made by 'consToEncoding':
551− gToEncoding opts pa te tel = consToEncoding opts pa te tel . unM1
818+ gToJSON _opts _ _ = E.emptyArray_
819+ {-# INLINE gToJSON #-}
552820
553821instance ( EncodeProduct arity a
554822 , EncodeProduct arity b
555− ) => GToEncoding arity (a :*: b) where
823+ ) => GToJSON Encoding arity (a :*: b)
824+ where
556825 -- Products are encoded to an array. Here we allocate a mutable vector of
557826 -- the same size as the product and write the product's elements to it using
558827 -- 'encodeProduct':
559− gToEncoding opts pa te tel p = E.tuple $ encodeProduct opts pa te tel p
560−
561−instance ( AllNullary (a :+: b) allNullary
562− , SumToEncoding arity (a :+: b) allNullary
563− ) => GToEncoding arity (a :+: b) where
564− -- If all constructors of a sum datatype are nullary and the
565− -- 'allNullaryToStringTag' option is set they are encoded to
566− -- strings. This distinction is made by 'sumToEncoding':
567− gToEncoding opts pa te tel
568− = (unTagged :: Tagged allNullary Encoding -> Encoding)
569− . sumToEncoding opts pa te tel
828+ gToJSON opts targs p = E.list E.retagEncoding [encodeProduct opts targs p]
829+ {-# INLINE gToJSON #-}
570830
571−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
572835 -- If an occurrence of the last type parameter is nested inside two
573836 -- composed types, it is encoded by using the outermost type's ToJSON1
574837 -- instance to generically encode the innermost type:
575− gToEncoding opts pa te tel =
576− let gte = gToEncoding opts pa te tel in
838+ gToJSON opts targs =
839+ let gte = gToJSON opts targs in
577840 liftToEncoding gte (listEncoding gte) . unComp1
841+ {-# INLINE gToJSON #-}
578842
579843--------------------------------------------------------------------------------
580844
581−class SumToJSON arity f allNullary where
582− sumToJSON :: Options -> Proxy arity
583− -> (a -> Value) -> ([a] -> Value)
584− -> f a -> Tagged allNullary Value
585−
586−instance ( GetConName f
587− , TaggedObjectPairs arity f
588− , ObjectWithSingleFieldObj arity f
589− , TwoElemArrayObj arity f
590− ) => SumToJSON arity f True where
591− sumToJSON opts pa tj tjl
592− | allNullaryToStringTag opts = Tagged . String . pack
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
857+ sumToJSON opts targs
858+ | allNullaryToStringTag opts = Tagged . fromString
593859 . constructorTagModifier opts . getConName
594− | otherwise = Tagged . nonAllNullarySumToJSON opts pa tj tjl
595−
596−instance ( TwoElemArrayObj arity f
597− , TaggedObjectPairs arity f
598− , ObjectWithSingleFieldObj arity f
599− ) => SumToJSON arity f False where
600− sumToJSON opts pa tj tjl = Tagged . nonAllNullarySumToJSON opts pa tj tjl
601−
602−nonAllNullarySumToJSON :: ( TwoElemArrayObj arity f
603− , TaggedObjectPairs arity f
604− , ObjectWithSingleFieldObj arity f
605− ) => Options -> Proxy arity
606− -> (a -> Value) -> ([a] -> Value)
607− -> f a -> Value
608−nonAllNullarySumToJSON opts pa tj tjl =
860+ | otherwise = Tagged . nonAllNullarySumToJSON opts targs
861+
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
868+ sumToJSON opts targs = Tagged . nonAllNullarySumToJSON opts targs
869+
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
876+nonAllNullarySumToJSON opts targs =
609877 case sumEncoding opts of
610− TaggedObject{..} ->
611− object . taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl
612− ObjectWithSingleField -> Object . objectWithSingleFieldObj opts pa tj tjl
613− TwoElemArray -> Array . twoElemArrayObj opts pa tj tjl
614−
615−--------------------------------------------------------------------------------
616878
617−class SumToEncoding arity f allNullary where
618− sumToEncoding :: Options -> Proxy arity
619− -> (a -> Encoding) -> ([a] -> Encoding)
620− -> f a -> Tagged allNullary Encoding
621−
622−instance ( GetConName f
623− , TaggedObjectEnc arity f
624− , ObjectWithSingleFieldEnc arity f
625− , TwoElemArrayEnc arity f
626− ) => SumToEncoding arity f True where
627− sumToEncoding opts pa te tel
628− | allNullaryToStringTag opts = Tagged . toEncoding .
629− constructorTagModifier opts . getConName
630− | otherwise = Tagged . nonAllNullarySumToEncoding opts pa te tel
631−
632−instance ( TwoElemArrayEnc arity f
633− , TaggedObjectEnc arity f
634− , ObjectWithSingleFieldEnc arity f
635− ) => SumToEncoding arity f False where
636− sumToEncoding opts pa te tel = Tagged . nonAllNullarySumToEncoding opts pa te tel
637−
638−nonAllNullarySumToEncoding :: ( TwoElemArrayEnc arity f
639− , TaggedObjectEnc arity f
640− , ObjectWithSingleFieldEnc arity f
641− ) => Options -> Proxy arity
642− -> (a -> Encoding) -> ([a] -> Encoding)
643− -> f a -> Encoding
644−nonAllNullarySumToEncoding opts pa te tel =
645− case sumEncoding opts of
646879 TaggedObject{..} ->
647− taggedObjectEnc opts pa tagFieldName contentsFieldName te tel
648− ObjectWithSingleField -> objectWithSingleFieldEnc opts pa te tel
649− TwoElemArray -> twoElemArrayEnc opts pa te tel
880+ taggedObject opts targs tagFieldName contentsFieldName
650881
651−--------------------------------------------------------------------------------
882+ ObjectWithSingleField ->
883+ (unTagged :: Tagged ObjectWithSingleField enc -> enc)
884+ . sumToJSON' opts targs
652885
653−class TaggedObjectPairs arity f where
654− taggedObjectPairs :: Options -> Proxy arity
655− -> String -> String
656− -> (a -> Value) -> ([a] -> Value)
657− -> f a -> [Pair]
658−
659−instance ( TaggedObjectPairs arity a
660− , TaggedObjectPairs arity b
661− ) => TaggedObjectPairs arity (a :+: b) where
662− taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl (L1 x) =
663− taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl x
664− taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl (R1 x) =
665− taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl x
666−
667−instance ( IsRecord a isRecord
668− , TaggedObjectPairs' arity a isRecord
669− , Constructor c
670− ) => TaggedObjectPairs arity (C1 c a) where
671− taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl =
672− (pack tagFieldName .= constructorTagModifier opts
673− (conName (undefined :: t c a p)) :) .
674− (unTagged :: Tagged isRecord [Pair] -> [Pair]) .
675− taggedObjectPairs' opts pa contentsFieldName tj tjl . unM1
886+ TwoElemArray ->
887+ (unTagged :: Tagged TwoElemArray enc -> enc)
888+ . sumToJSON' opts targs
676889
677−class TaggedObjectPairs' arity f isRecord where
678− taggedObjectPairs' :: Options -> Proxy arity
679− -> String -> (a -> Value) -> ([a] -> Value)
680− -> f a -> Tagged isRecord [Pair]
890+ UntaggedValue ->
891+ (unTagged :: Tagged UntaggedValue enc -> enc)
892+ . sumToJSON' opts targs
681893
682−instance OVERLAPPING_ TaggedObjectPairs' arity U1 False where
683− taggedObjectPairs' _ _ _ _ _ _ = Tagged []
894+--------------------------------------------------------------------------------
895+
896+class FromString enc where
897+ fromString :: String -> enc
684898
685−instance (RecordToPairs arity f) => TaggedObjectPairs' arity f True where
686− taggedObjectPairs' opts pa _ tj tjl =
687− Tagged . toList . recordToPairs opts pa tj tjl
899+instance FromString Encoding where
900+ fromString = toEncoding
688901
689−instance (GToJSON arity f) => TaggedObjectPairs' arity f False where
690− taggedObjectPairs' opts pa contentsFieldName tj tjl =
691− Tagged . (:[]) . (pack contentsFieldName .=) . gToJSON opts pa tj tjl
902+instance FromString Value where
903+ fromString = String . pack
692904
693905--------------------------------------------------------------------------------
694906
695−class TaggedObjectEnc arity f where
696− taggedObjectEnc :: Options -> Proxy arity
697− -> String -> String
698− -> (a -> Encoding) -> ([a] -> Encoding)
699− -> f a -> Encoding
700−
701−instance ( TaggedObjectEnc arity a
702− , TaggedObjectEnc arity b
703− ) => TaggedObjectEnc arity (a :+: b) where
704− taggedObjectEnc opts pa tagFieldName contentsFieldName te tel (L1 x) =
705− taggedObjectEnc opts pa tagFieldName contentsFieldName te tel x
706− taggedObjectEnc opts pa tagFieldName contentsFieldName te tel (R1 x) =
707− taggedObjectEnc opts pa tagFieldName contentsFieldName te tel x
708−
709−instance ( IsRecord a isRecord
710− , 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
711926 , Constructor c
712− ) => TaggedObjectEnc arity (C1 c a) where
713− taggedObjectEnc opts pa tagFieldName contentsFieldName te tel v =
714− E.openCurly <>
715− (toEncoding tagFieldName <>
716− E.colon <>
717− toEncoding (constructorTagModifier opts (conName (undefined :: t c a p)))) <>
718− ((unTagged :: Tagged isRecord Encoding -> Encoding) .
719− taggedObjectEnc' opts pa contentsFieldName te tel . unM1 $ v) <>
720− E.closeCurly
721−
722−class TaggedObjectEnc' arity f isRecord where
723− taggedObjectEnc' :: Options -> Proxy arity
724− -> String -> (a -> Encoding) -> ([a] -> Encoding)
725− -> f a -> Tagged isRecord Encoding
726−
727−instance OVERLAPPING_ TaggedObjectEnc' arity U1 False where
728− taggedObjectEnc' _ _ _ _ _ _ = Tagged mempty
729−
730−instance (RecordToEncoding arity f) => TaggedObjectEnc' arity f True where
731− taggedObjectEnc' opts pa _ te tel = Tagged . (E.comma <>) . fst
732− . recordToEncoding opts pa te tel
733−
734−instance (GToEncoding arity f) => TaggedObjectEnc' arity f False where
735− taggedObjectEnc' opts pa contentsFieldName te tel =
736− Tagged . (\z -> E.comma <> toEncoding contentsFieldName <> E.colon <> z) .
737− gToEncoding opts pa te tel
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
738957
739958--------------------------------------------------------------------------------
740959
@@ -749,283 +968,242 @@ instance (GetConName a, GetConName b) => GetConName (a :+: b) where
749968instance (Constructor c) => GetConName (C1 c a) where
750969 getConName = conName
751970
971+-- For genericToJSONKey
972+instance GetConName a => GetConName (D1 d a) where
973+ getConName (M1 x) = getConName x
974+
752975--------------------------------------------------------------------------------
753976
754−class TwoElemArrayObj arity f where
755− twoElemArrayObj :: Options -> Proxy arity
756− -> (a -> Value) -> ([a] -> Value)
757− -> f a -> V.Vector Value
977+-- Reflection of SumEncoding variants
758978
759−instance ( TwoElemArrayObj arity a
760− , TwoElemArrayObj arity b
761− ) => TwoElemArrayObj arity (a :+: b) where
762− twoElemArrayObj opts pa tj tjl (L1 x) = twoElemArrayObj opts pa tj tjl x
763− twoElemArrayObj opts pa tj tjl (R1 x) = twoElemArrayObj opts pa tj tjl x
979+data ObjectWithSingleField
980+data TwoElemArray
981+data UntaggedValue
764982
765−instance ( GToJSON arity a
766− , 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
7671000 , Constructor c
768− ) => TwoElemArrayObj arity (C1 c a) where
769− twoElemArrayObj opts pa tj tjl x = V.create $ do
1001+ ) => SumToJSON' TwoElemArray Value arity (C1 c a) where
1002+ sumToJSON' opts targs x = Tagged $ Array $ V.create $ do
7701003 mv <- VM.unsafeNew 2
7711004 VM.unsafeWrite mv 0 $ String $ pack $ constructorTagModifier opts
7721005 $ conName (undefined :: t c a p)
773− VM.unsafeWrite mv 1 $ gToJSON opts pa tj tjl x
1006+ VM.unsafeWrite mv 1 $ gToJSON opts targs x
7741007 return mv
7751008
7761009--------------------------------------------------------------------------------
7771010
778−class TwoElemArrayEnc arity f where
779− twoElemArrayEnc :: Options -> Proxy arity
780− -> (a -> Encoding) -> ([a] -> Encoding)
781− -> f a -> Encoding
782−
783−instance ( TwoElemArrayEnc arity a
784− , TwoElemArrayEnc arity b
785− ) => TwoElemArrayEnc arity (a :+: b) where
786− twoElemArrayEnc opts pa te tel (L1 x) = twoElemArrayEnc opts pa te tel x
787− twoElemArrayEnc opts pa te tel (R1 x) = twoElemArrayEnc opts pa te tel x
788−
789−instance ( GToEncoding arity a
790− , ConsToEncoding arity a
1011+instance ( GToJSON Encoding arity a
1012+ , ConsToJSON Encoding arity a
7911013 , Constructor c
792− ) => TwoElemArrayEnc arity (C1 c a) where
793− twoElemArrayEnc opts pa te tel x = E.tuple $
794− toEncoding (constructorTagModifier opts (conName (undefined :: t c a p))) >*<
795− gToEncoding opts pa te tel x
796−
797−--------------------------------------------------------------------------------
798−
799−class ConsToJSON arity f where
800− consToJSON :: Options -> Proxy arity
801− -> (a -> Value) -> ([a] -> Value)
802− -> f a -> Value
803−
804−class ConsToJSON' arity f isRecord where
805− consToJSON' :: Options -> Proxy arity
806− -> Bool -- ^ Are we a record with one field?
807− -> (a -> Value) -> ([a] -> Value)
808− -> f a -> Tagged isRecord Value
809−
810−instance ( IsRecord f isRecord
811− , ConsToJSON' arity f isRecord
812− ) => ConsToJSON arity f where
813− consToJSON opts pa tj tjl =
814− (unTagged :: Tagged isRecord Value -> Value)
815− . consToJSON' opts pa (isUnary (undefined :: f a)) tj tjl
816−
817−instance (RecordToPairs arity f) => ConsToJSON' arity f True where
818− consToJSON' opts pa isUn tj tjl f = let
819− vals = toList $ recordToPairs opts pa tj tjl f
820− in case (unwrapUnaryRecords opts,isUn,vals) of
821− (True,True,[(_,val)]) -> Tagged val
822− _ -> Tagged $ object vals
823−
824−instance GToJSON arity f => ConsToJSON' arity f False where
825− consToJSON' opts pa _ tj tjl = Tagged . gToJSON opts pa tj tjl
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+ ]
8261020
8271021--------------------------------------------------------------------------------
8281022
829−class ConsToEncoding arity f where
830− consToEncoding :: Options -> Proxy arity
831− -> (a -> Encoding) -> ([a] -> Encoding)
832− -> f a -> Encoding
1023+class ConsToJSON enc arity f where
1024+ consToJSON :: Options -> ToArgs enc arity a
1025+ -> f a -> enc
8331026
834−class ConsToEncoding' arity f isRecord where
835− consToEncoding' :: Options -> Proxy arity
836− -> Bool -- ^ Are we a record with one field?
837− -> (a -> Encoding) -> ([a] -> Encoding)
838− -> f a -> Tagged isRecord Encoding
1027+class ConsToJSON' enc arity f isRecord where
1028+ consToJSON' :: Options -> ToArgs enc arity a
1029+ -> f a -> Tagged isRecord enc
8391030
8401031instance ( IsRecord f isRecord
841− , ConsToEncoding' arity f isRecord
842− ) => ConsToEncoding arity f where
843− consToEncoding opts pa te tel =
844− (unTagged :: Tagged isRecord Encoding -> Encoding)
845− . consToEncoding' opts pa (isUnary (undefined :: f a)) te tel
846−
847−instance (RecordToEncoding arity f) => ConsToEncoding' arity f True where
848− consToEncoding' opts pa isUn te tel x =
849− let (enc, mbVal) = recordToEncoding opts pa te tel x
850− in case (unwrapUnaryRecords opts, isUn, mbVal) of
851− (True, True, Just val) -> Tagged val
852− _ -> Tagged $ E.wrapObject enc
853−
854−instance GToEncoding arity f => ConsToEncoding' arity f False where
855− consToEncoding' opts pa _ te tel = Tagged . gToEncoding opts pa te tel
1032+ , ConsToJSON' enc arity f isRecord
1033+ ) => ConsToJSON enc arity f
1034+ where
1035+ consToJSON opts targs =
1036+ (unTagged :: Tagged isRecord enc -> enc)
1037+ . consToJSON' opts targs
1038+ {-# INLINE consToJSON #-}
1039+
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' #-}
1057+
1058+instance GToJSON enc arity f => ConsToJSON' enc arity f False where
1059+ consToJSON' opts targs = Tagged . gToJSON opts targs
1060+ {-# INLINE consToJSON' #-}
8561061
8571062--------------------------------------------------------------------------------
8581063
859−class RecordToPairs arity f where
860− recordToPairs :: Options -> Proxy arity
861− -> (a -> Value) -> ([a] -> Value)
862− -> f a -> DList Pair
863−
864−instance ( RecordToPairs arity a
865− , RecordToPairs arity b
866− ) => RecordToPairs arity (a :*: b) where
867− recordToPairs opts pa tj tjl (a :*: b) = recordToPairs opts pa tj tjl a <>
868− recordToPairs opts pa tj tjl b
869−
870−instance (Selector s, GToJSON arity a) => RecordToPairs arity (S1 s a) where
871− recordToPairs = fieldToPair
872−
873−instance OVERLAPPING_ (Selector s, ToJSON a) =>
874− RecordToPairs arity (S1 s (K1 i (Maybe a))) where
875− recordToPairs opts _ _ _ (M1 k1) | omitNothingFields opts
876− , K1 Nothing <- k1 = DList.empty
877− recordToPairs opts pa tj tjl m1 = fieldToPair opts pa tj tjl m1
878−
879−fieldToPair :: (Selector s, GToJSON arity a)
880− => Options -> Proxy arity
881− -> (p -> Value) -> ([p] -> Value)
882− -> S1 s a p -> DList Pair
883−fieldToPair opts pa tj tjl m1 = pure ( pack $ fieldLabelModifier opts $ selName m1
884− , gToJSON opts pa tj tjl (unM1 m1)
885− )
886−
887−--------------------------------------------------------------------------------
888−
889−class RecordToEncoding arity f where
1064+class RecordToPairs enc pairs arity f where
8901065 -- 1st element: whole thing
8911066 -- 2nd element: in case the record has only 1 field, just the value
8921067 -- of the field (without the key); 'Nothing' otherwise
893− recordToEncoding :: Options -> Proxy arity
894− -> (a -> Encoding) -> ([a] -> Encoding)
895− -> f a -> (Encoding, Maybe Encoding)
896−
897−instance ( RecordToEncoding arity a
898− , RecordToEncoding arity b
899− ) => RecordToEncoding arity (a :*: b) where
900− recordToEncoding opts pa te tel (a :*: b) | omitNothingFields opts =
901− (mconcat $ intersperse E.comma $
902− filter (not . E.nullEncoding)
903− [ fst (recordToEncoding opts pa te tel a)
904− , fst (recordToEncoding opts pa te tel b) ]
905− , Nothing)
906− recordToEncoding opts pa te tel (a :*: b) =
907− (fst (recordToEncoding opts pa te tel a) <> E.comma <>
908− fst (recordToEncoding opts pa te tel b),
909− Nothing)
910−
911−instance (Selector s, GToEncoding arity a) => RecordToEncoding arity (S1 s a) where
912− recordToEncoding = fieldToEncoding
913−
914−instance OVERLAPPING_ (Selector s, ToJSON a) =>
915− RecordToEncoding arity (S1 s (K1 i (Maybe a))) where
916− recordToEncoding opts _ _ _ (M1 k1) | omitNothingFields opts
917− , K1 Nothing <- k1 = (mempty, Nothing)
918− recordToEncoding opts pa te tel m1 = fieldToEncoding opts pa te tel m1
919−
920−fieldToEncoding :: (Selector s, GToEncoding arity a)
921− => Options -> Proxy arity
922− -> (p -> Encoding) -> ([p] -> Encoding)
923− -> S1 s a p -> (Encoding, Maybe Encoding)
924−fieldToEncoding opts pa te tel m1 =
925− let keyBuilder = toEncoding (fieldLabelModifier opts $ selName m1)
926− valueBuilder = gToEncoding opts pa te tel (unM1 m1)
927− in (keyBuilder <> E.colon <> valueBuilder, Just valueBuilder)
1068+ recordToPairs :: Options -> ToArgs enc arity a
1069+ -> f a -> pairs
1070+
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
1088+ recordToPairs = fieldToPair
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
1098+ recordToPairs opts _ (M1 k1) | omitNothingFields opts
1099+ , K1 Nothing <- k1 = mempty
1100+ recordToPairs opts targs m1 = fieldToPair opts targs m1
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 #-}
9281126
9291127--------------------------------------------------------------------------------
9301128
9311129class WriteProduct arity f where
9321130 writeProduct :: Options
933− -> Proxy arity
1131+ -> ToArgs Value arity a
9341132 -> VM.MVector s Value
9351133 -> Int -- ^ index
9361134 -> Int -- ^ length
937− -> (a -> Value)
938− -> ([a] -> Value)
9391135 -> f a
9401136 -> ST s ()
9411137
9421138instance ( WriteProduct arity a
9431139 , WriteProduct arity b
9441140 ) => WriteProduct arity (a :*: b) where
945− writeProduct opts pa mv ix len tj tjl (a :*: b) = do
946− writeProduct opts pa mv ix lenL tj tjl a
947− writeProduct opts pa mv ixR lenR tj tjl b
1141+ writeProduct opts targs mv ix len (a :*: b) = do
1142+ writeProduct opts targs mv ix lenL a
1143+ writeProduct opts targs mv ixR lenR b
9481144 where
9491145 lenL = len `unsafeShiftR` 1
9501146 lenR = len - lenL
9511147 ixR = ix + lenL
1148+ {-# INLINE writeProduct #-}
9521149
953−instance OVERLAPPABLE_ (GToJSON arity a) => WriteProduct arity a where
954− writeProduct opts pa mv ix _ tj tjl =
955− VM.unsafeWrite mv ix . gToJSON opts pa tj tjl
1150+instance OVERLAPPABLE_ (GToJSON Value arity a) => WriteProduct arity a where
1151+ writeProduct opts targs mv ix _ =
1152+ VM.unsafeWrite mv ix . gToJSON opts targs
1153+ {-# INLINE writeProduct #-}
9561154
9571155--------------------------------------------------------------------------------
9581156
9591157class EncodeProduct arity f where
960− encodeProduct :: Options -> Proxy arity
961− -> (a -> Encoding) -> ([a] -> Encoding)
962− -> f a -> Encoding
1158+ encodeProduct :: Options -> ToArgs Encoding arity a
1159+ -> f a -> Encoding' E.InArray
9631160
9641161instance ( EncodeProduct arity a
9651162 , EncodeProduct arity b
9661163 ) => EncodeProduct arity (a :*: b) where
967− encodeProduct opts pa te tel (a :*: b) | omitNothingFields opts =
968− mconcat $ intersperse E.comma $
1164+ encodeProduct opts targs (a :*: b) | omitNothingFields opts =
1165+ E.econcat $ intersperse E.comma $
9691166 filter (not . E.nullEncoding)
970− [encodeProduct opts pa te tel a, encodeProduct opts pa te tel b]
971− encodeProduct opts pa te tel (a :*: b) = encodeProduct opts pa te tel a <>
972− E.comma <>
973− encodeProduct opts pa te tel b
1167+ [encodeProduct opts targs a, encodeProduct opts targs b]
1168+ encodeProduct opts targs (a :*: b) =
1169+ encodeProduct opts targs a >*<
1170+ encodeProduct opts targs b
1171+ {-# INLINE encodeProduct #-}
9741172
975−instance OVERLAPPABLE_ (GToEncoding arity a) => EncodeProduct arity a where
976− encodeProduct opts = gToEncoding opts
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 #-}
9771176
9781177--------------------------------------------------------------------------------
9791178
980−class ObjectWithSingleFieldObj arity f where
981− objectWithSingleFieldObj :: Options -> Proxy arity
982− -> (a -> Value) -> ([a] -> Value)
983− -> f a -> Object
984−
985−instance ( ObjectWithSingleFieldObj arity a
986− , ObjectWithSingleFieldObj arity b
987− ) => ObjectWithSingleFieldObj arity (a :+: b) where
988− objectWithSingleFieldObj opts pa tj tjl (L1 x) =
989− objectWithSingleFieldObj opts pa tj tjl x
990− objectWithSingleFieldObj opts pa tj tjl (R1 x) =
991− objectWithSingleFieldObj opts pa tj tjl x
992−
993−instance ( GToJSON arity a
994− , ConsToJSON arity a
1179+instance ( GToJSON enc arity a
1180+ , ConsToJSON enc arity a
1181+ , FromPairs enc pairs
1182+ , KeyValuePair enc pairs
9951183 , Constructor c
996− ) => ObjectWithSingleFieldObj arity (C1 c a) where
997− objectWithSingleFieldObj opts pa tj tjl = H.singleton typ . gToJSON opts pa tj tjl
1184+ ) => SumToJSON' ObjectWithSingleField enc arity (C1 c a)
1185+ where
1186+ sumToJSON' opts targs =
1187+ Tagged . fromPairs . (typ `pair`) . gToJSON opts targs
9981188 where
999− typ = pack $ constructorTagModifier opts $
1189+ typ = constructorTagModifier opts $
10001190 conName (undefined :: t c a p)
10011191
10021192--------------------------------------------------------------------------------
10031193
1004−class ObjectWithSingleFieldEnc arity f where
1005− objectWithSingleFieldEnc :: Options -> Proxy arity
1006− -> (a -> Encoding) -> ([a] -> Encoding)
1007− -> f a -> Encoding
1008−
1009−instance ( ObjectWithSingleFieldEnc arity a
1010− , ObjectWithSingleFieldEnc arity b
1011− ) => ObjectWithSingleFieldEnc arity (a :+: b) where
1012− objectWithSingleFieldEnc opts pa te tel (L1 x) =
1013− objectWithSingleFieldEnc opts pa te tel x
1014− objectWithSingleFieldEnc opts pa te tel (R1 x) =
1015− objectWithSingleFieldEnc opts pa te tel x
1016−
1017−instance ( GToEncoding arity a
1018− , ConsToEncoding arity a
1019− , Constructor c
1020− ) => ObjectWithSingleFieldEnc arity (C1 c a) where
1021− objectWithSingleFieldEnc opts pa te tel v =
1022− E.openCurly <>
1023− toEncoding
1024− (constructorTagModifier opts
1025− (conName (undefined :: t c a p))) <>
1026− E.colon <>
1027− gToEncoding opts pa te tel v <>
1028− E.closeCurly
1194+instance OVERLAPPABLE_
1195+ ( ConsToJSON enc arity a
1196+ ) => SumToJSON' UntaggedValue enc arity (C1 c a)
1197+ where
1198+ sumToJSON' opts targs = Tagged . gToJSON opts targs
1199+
1200+instance OVERLAPPING_
1201+ ( Constructor c
1202+ , FromString enc
1203+ ) => SumToJSON' UntaggedValue enc arity (C1 c U1)
1204+ where
1205+ sumToJSON' opts _ _ = Tagged . fromString $
1206+ constructorTagModifier opts $ conName (undefined :: t c U1 p)
10291207
10301208-------------------------------------------------------------------------------
10311209-- Instances
@@ -1035,21 +1213,6 @@ instance ( GToEncoding arity a
10351213-- base
10361214-------------------------------------------------------------------------------
10371215
1038−instance ToJSON1 Identity where
1039− liftToJSON t _ (Identity a) = t a
1040− {-# INLINE liftToJSON #-}
1041−
1042− liftToEncoding t _ (Identity a) = t a
1043− {-# INLINE liftToEncoding #-}
1044−
1045−instance (ToJSON a) => ToJSON (Identity a) where
1046− toJSON = toJSON1
1047− {-# INLINE toJSON #-}
1048−
1049− toEncoding = toEncoding1
1050− {-# INLINE toEncoding #-}
1051−
1052−
10531216instance ToJSON2 Const where
10541217 liftToJSON2 t _ _ _ (Const x) = t x
10551218 {-# INLINE liftToJSON2 #-}
@@ -1090,8 +1253,8 @@ instance (ToJSON a) => ToJSON (Maybe a) where
10901253
10911254
10921255instance ToJSON2 Either where
1093− liftToJSON2 toA _ _toB _ (Left a) = Object $ H.singleton left (toA a)
1094− liftToJSON2 _toA _ toB _ (Right b) = Object $ H.singleton right (toB b)
1256+ liftToJSON2 toA _ _toB _ (Left a) = Object $ H.singleton "Left" (toA a)
1257+ liftToJSON2 _toA _ toB _ (Right b) = Object $ H.singleton "Right" (toB b)
10951258 {-# INLINE liftToJSON2 #-}
10961259
10971260 liftToEncoding2 toA _ _toB _ (Left a) = E.pairs $ E.pair "Left" $ toA a
@@ -1113,9 +1276,12 @@ instance (ToJSON a, ToJSON b) => ToJSON (Either a b) where
11131276 toEncoding = toEncoding2
11141277 {-# INLINE toEncoding #-}
11151278
1116−left, right :: Text
1117−left = "Left"
1118−right = "Right"
1279+instance ToJSON Void where
1280+ toJSON = absurd
1281+ {-# INLINE toJSON #-}
1282+
1283+ toEncoding = absurd
1284+ {-# INLINE toEncoding #-}
11191285
11201286
11211287instance ToJSON Bool where
@@ -1126,10 +1292,7 @@ instance ToJSON Bool where
11261292 {-# INLINE toEncoding #-}
11271293
11281294instance ToJSONKey Bool where
1129− toJSONKey = ToJSONKeyText
1130− ( (\x -> if x then "true" else "false")
1131− , (\x -> toEncoding $ if x then ("true" :: Text) else "false")
1132− )
1295+ toJSONKey = toJSONKeyText $ \x -> if x then "true" else "false"
11331296
11341297
11351298instance ToJSON Ordering where
@@ -1305,7 +1468,6 @@ instance ToJSONKey Int64 where
13051468 toJSONKey = toJSONKeyTextEnc E.int64Text
13061469 {-# INLINE toJSONKey #-}
13071470
1308−
13091471instance ToJSON Word where
13101472 toJSON = Number . fromIntegral
13111473 {-# INLINE toJSON #-}
@@ -1365,6 +1527,12 @@ instance ToJSONKey Word64 where
13651527 toJSONKey = toJSONKeyTextEnc E.word64Text
13661528 {-# INLINE toJSONKey #-}
13671529
1530+instance ToJSON CTime where
1531+ toJSON (CTime i) = toJSON i
1532+ {-# INLINE toJSON #-}
1533+
1534+ toEncoding (CTime i) = toEncoding i
1535+ {-# INLINE toEncoding #-}
13681536
13691537instance ToJSON Text where
13701538 toJSON = String
@@ -1374,9 +1542,10 @@ instance ToJSON Text where
13741542 {-# INLINE toEncoding #-}
13751543
13761544instance ToJSONKey Text where
1377− toJSONKey = ToJSONKeyText (id, toEncoding)
1545+ toJSONKey = toJSONKeyText id
13781546 {-# INLINE toJSONKey #-}
13791547
1548+
13801549instance ToJSON LT.Text where
13811550 toJSON = String . LT.toStrict
13821551 {-# INLINE toJSON #-}
@@ -1384,6 +1553,10 @@ instance ToJSON LT.Text where
13841553 toEncoding = E.lazyText
13851554 {-# INLINE toEncoding #-}
13861555
1556+instance ToJSONKey LT.Text where
1557+ toJSONKey = toJSONKeyText LT.toStrict
1558+
1559+
13871560instance ToJSON Version where
13881561 toJSON = toJSON . showVersion
13891562 {-# INLINE toJSON #-}
@@ -1391,6 +1564,9 @@ instance ToJSON Version where
13911564 toEncoding = toEncoding . showVersion
13921565 {-# INLINE toEncoding #-}
13931566
1567+instance ToJSONKey Version where
1568+ toJSONKey = toJSONKeyText (T.pack . showVersion)
1569+
13941570-------------------------------------------------------------------------------
13951571-- semigroups NonEmpty
13961572-------------------------------------------------------------------------------
@@ -1441,6 +1617,116 @@ instance (ToJSON a) => ToJSON (DList.DList a) where
14411617 toEncoding = toEncoding1
14421618 {-# INLINE toEncoding #-}
14431619
1620+-------------------------------------------------------------------------------
1621+-- transformers - Functors
1622+-------------------------------------------------------------------------------
1623+
1624+instance ToJSON1 Identity where
1625+ liftToJSON t _ (Identity a) = t a
1626+ {-# INLINE liftToJSON #-}
1627+
1628+ liftToJSONList _ tl xs = tl (map runIdentity xs)
1629+ {-# INLINE liftToJSONList #-}
1630+
1631+ liftToEncoding t _ (Identity a) = t a
1632+ {-# INLINE liftToEncoding #-}
1633+
1634+ liftToEncodingList _ tl xs = tl (map runIdentity xs)
1635+ {-# INLINE liftToEncodingList #-}
1636+
1637+instance (ToJSON a) => ToJSON (Identity a) where
1638+ toJSON = toJSON1
1639+ {-# INLINE toJSON #-}
1640+
1641+ toJSONList = liftToJSONList toJSON toJSONList
1642+ {-# INLINE toJSONList #-}
1643+
1644+ toEncoding = toEncoding1
1645+ {-# INLINE toEncoding #-}
1646+
1647+ toEncodingList = liftToEncodingList toEncoding toEncodingList
1648+ {-# INLINE toEncodingList #-}
1649+
1650+instance (ToJSONKey a) => ToJSONKey (Identity a) where
1651+ toJSONKey = contramapToJSONKeyFunction runIdentity toJSONKey
1652+ toJSONKeyList = contramapToJSONKeyFunction (map runIdentity) toJSONKeyList
1653+
1654+
1655+instance (ToJSON1 f, ToJSON1 g) => ToJSON1 (Compose f g) where
1656+ liftToJSON tv tvl (Compose x) = liftToJSON g gl x
1657+ where
1658+ g = liftToJSON tv tvl
1659+ gl = liftToJSONList tv tvl
1660+ {-# INLINE liftToJSON #-}
1661+
1662+ liftToJSONList te tel xs = liftToJSONList g gl (map getCompose xs)
1663+ where
1664+ g = liftToJSON te tel
1665+ gl = liftToJSONList te tel
1666+ {-# INLINE liftToJSONList #-}
1667+
1668+ liftToEncoding te tel (Compose x) = liftToEncoding g gl x
1669+ where
1670+ g = liftToEncoding te tel
1671+ gl = liftToEncodingList te tel
1672+ {-# INLINE liftToEncoding #-}
1673+
1674+ liftToEncodingList te tel xs = liftToEncodingList g gl (map getCompose xs)
1675+ where
1676+ g = liftToEncoding te tel
1677+ gl = liftToEncodingList te tel
1678+ {-# INLINE liftToEncodingList #-}
1679+
1680+instance (ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (Compose f g a) where
1681+ toJSON = toJSON1
1682+ {-# INLINE toJSON #-}
1683+
1684+ toJSONList = liftToJSONList toJSON toJSONList
1685+ {-# INLINE toJSONList #-}
1686+
1687+ toEncoding = toEncoding1
1688+ {-# INLINE toEncoding #-}
1689+
1690+ toEncodingList = liftToEncodingList toEncoding toEncodingList
1691+ {-# INLINE toEncodingList #-}
1692+
1693+
1694+instance (ToJSON1 f, ToJSON1 g) => ToJSON1 (Product f g) where
1695+ liftToJSON tv tvl (Pair x y) = liftToJSON2 tx txl ty tyl (x, y)
1696+ where
1697+ tx = liftToJSON tv tvl
1698+ txl = liftToJSONList tv tvl
1699+ ty = liftToJSON tv tvl
1700+ tyl = liftToJSONList tv tvl
1701+
1702+ liftToEncoding te tel (Pair x y) = liftToEncoding2 tx txl ty tyl (x, y)
1703+ where
1704+ tx = liftToEncoding te tel
1705+ txl = liftToEncodingList te tel
1706+ ty = liftToEncoding te tel
1707+ tyl = liftToEncodingList te tel
1708+
1709+instance (ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (Product f g a) where
1710+ toJSON = toJSON1
1711+ {-# INLINE toJSON #-}
1712+
1713+ toEncoding = toEncoding1
1714+ {-# INLINE toEncoding #-}
1715+
1716+instance (ToJSON1 f, ToJSON1 g) => ToJSON1 (Sum f g) where
1717+ liftToJSON tv tvl (InL x) = Object $ H.singleton "InL" (liftToJSON tv tvl x)
1718+ liftToJSON tv tvl (InR y) = Object $ H.singleton "InR" (liftToJSON tv tvl y)
1719+
1720+ liftToEncoding te tel (InL x) = E.pairs $ E.pair "InL" $ liftToEncoding te tel x
1721+ liftToEncoding te tel (InR y) = E.pairs $ E.pair "InR" $ liftToEncoding te tel y
1722+
1723+instance (ToJSON1 f, ToJSON1 g, ToJSON a) => ToJSON (Sum f g a) where
1724+ toJSON = toJSON1
1725+ {-# INLINE toJSON #-}
1726+
1727+ toEncoding = toEncoding1
1728+ {-# INLINE toEncoding #-}
1729+
14441730-------------------------------------------------------------------------------
14451731-- containers
14461732-------------------------------------------------------------------------------
@@ -1506,17 +1792,15 @@ instance ToJSON a => ToJSON (IntMap.IntMap a) where
15061792
15071793instance ToJSONKey k => ToJSON1 (M.Map k) where
15081794 liftToJSON g _ = case toJSONKey of
1509− ToJSONKeyText (f,_) -> Object . mapHashKeyVal f g
1510− ToJSONKeyValue (f,_) -> Array . V.fromList . map (toJSONPair f g) . M.toList
1795+ ToJSONKeyText f _ -> Object . mapHashKeyVal f g
1796+ ToJSONKeyValue f _ -> Array . V.fromList . map (toJSONPair f g) . M.toList
15111797 {-# INLINE liftToJSON #-}
15121798
1513− -- liftToEncoding :: forall a. (a -> Encoding) -> ([a] -> Encoding) -> M.Map k a -> Encoding
15141799 liftToEncoding g _ = case toJSONKey of
1515− ToJSONKeyText (_,f) -> dict f g M.foldrWithKey
1516− ToJSONKeyValue (_,f) -> listEncoding (pairEncoding f) . M.toList
1800+ ToJSONKeyText _ f -> dict f g M.foldrWithKey
1801+ ToJSONKeyValue _ f -> listEncoding (pairEncoding f) . M.toList
15171802 where
1518− -- pairEncoding :: (k -> Encoding) -> (k, a) -> Encoding
1519− pairEncoding f (a, b) = tuple $ f a >*< g b
1803+ pairEncoding f (a, b) = E.list id [f a, g b]
15201804 {-# INLINE liftToEncoding #-}
15211805
15221806
@@ -1554,6 +1838,17 @@ instance (ToJSON v) => ToJSON (Tree.Tree v) where
15541838 toEncoding = toEncoding1
15551839 {-# INLINE toEncoding #-}
15561840
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
15571852
15581853-------------------------------------------------------------------------------
15591854-- vector
@@ -1567,10 +1862,12 @@ instance ToJSON1 Vector where
15671862 {-# INLINE liftToEncoding #-}
15681863
15691864instance (ToJSON a) => ToJSON (Vector a) where
1570− toJSON = Array . V.map toJSON
1865+ {-# SPECIALIZE instance ToJSON Array #-}
1866+
1867+ toJSON = toJSON1
15711868 {-# INLINE toJSON #-}
15721869
1573− toEncoding = encodeVector
1870+ toEncoding = toEncoding1
15741871 {-# INLINE toEncoding #-}
15751872
15761873encodeVector :: (ToJSON a, VG.Vector v a) => v a -> Encoding
@@ -1625,20 +1922,21 @@ instance (ToJSON a) => ToJSON (HashSet.HashSet a) where
16251922
16261923instance ToJSONKey k => ToJSON1 (H.HashMap k) where
16271924 liftToJSON g _ = case toJSONKey of
1628− ToJSONKeyText (f,_) -> Object . mapKeyVal f g
1629− ToJSONKeyValue (f,_) -> Array . V.fromList . map (toJSONPair f g) . H.toList
1925+ ToJSONKeyText f _ -> Object . mapKeyVal f g
1926+ ToJSONKeyValue f _ -> Array . V.fromList . map (toJSONPair f g) . H.toList
16301927 {-# INLINE liftToJSON #-}
16311928
16321929 -- liftToEncoding :: forall a. (a -> Encoding) -> ([a] -> Encoding) -> H.HashMap k a -> Encoding
16331930 liftToEncoding g _ = case toJSONKey of
1634− ToJSONKeyText (_,f) -> dict f g H.foldrWithKey
1635− ToJSONKeyValue (_,f) -> listEncoding (pairEncoding f) . H.toList
1931+ ToJSONKeyText _ f -> dict f g H.foldrWithKey
1932+ ToJSONKeyValue _ f -> listEncoding (pairEncoding f) . H.toList
16361933 where
1637− -- pairEncoding :: (k -> Encoding) -> (k, a) -> Encoding
1638− pairEncoding f (a, b) = tuple $ f a >*< g b
1934+ pairEncoding f (a, b) = E.list id [f a, g b]
16391935 {-# INLINE liftToEncoding #-}
16401936
16411937instance (ToJSON v, ToJSONKey k) => ToJSON (H.HashMap k v) where
1938+ {-# SPECIALIZE instance ToJSON Object #-}
1939+
16421940 toJSON = toJSON1
16431941 {-# INLINE toJSON #-}
16441942
@@ -1668,6 +1966,32 @@ dotNetTime (DotNetTime t) = secs ++ formatMillis t ++ ")/"
16681966formatMillis :: (FormatTime t) => t -> String
16691967formatMillis = take 3 . formatTime defaultTimeLocale "%q"
16701968
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+
16711995-------------------------------------------------------------------------------
16721996-- time
16731997-------------------------------------------------------------------------------
@@ -1712,15 +2036,15 @@ instance ToJSONKey UTCTime where
17122036 toJSONKey = toJSONKeyTextEnc E.utcTime
17132037
17142038-- | Encode something t a JSON string.
1715−stringEncoding :: Encoding -> Value
2039+stringEncoding :: Encoding' Text -> Value
17162040stringEncoding = String
17172041 . T.dropAround (== '"')
17182042 . T.decodeLatin1
17192043 . L.toStrict
1720− . B.toLazyByteString
1721− . fromEncoding
2044+ . E.encodingToLazyByteString
17222045{-# INLINE stringEncoding #-}
17232046
2047+
17242048instance ToJSON NominalDiffTime where
17252049 toJSON = Number . realToFrac
17262050 {-# INLINE toJSON #-}
@@ -1728,18 +2052,70 @@ instance ToJSON NominalDiffTime where
17282052 toEncoding = E.scientific . realToFrac
17292053 {-# INLINE toEncoding #-}
17302054
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+
17312107-------------------------------------------------------------------------------
17322108-- base Monoid/Semigroup
17332109-------------------------------------------------------------------------------
17342110
1735−instance ToJSON1 Dual where
1736− liftToJSON t _ = t . getDual
2111+instance ToJSON1 Monoid.Dual where
2112+ liftToJSON t _ = t . Monoid.getDual
17372113 {-# INLINE liftToJSON #-}
17382114
1739− liftToEncoding t _ = t . getDual
2115+ liftToEncoding t _ = t . Monoid.getDual
17402116 {-# INLINE liftToEncoding #-}
17412117
1742−instance ToJSON a => ToJSON (Dual a) where
2118+instance ToJSON a => ToJSON (Monoid.Dual a) where
17432119 toJSON = toJSON1
17442120 {-# INLINE toJSON #-}
17452121
@@ -1747,14 +2123,14 @@ instance ToJSON a => ToJSON (Dual a) where
17472123 {-# INLINE toEncoding #-}
17482124
17492125
1750−instance ToJSON1 First where
1751− liftToJSON t to' = liftToJSON t to' . getFirst
2126+instance ToJSON1 Monoid.First where
2127+ liftToJSON t to' = liftToJSON t to' . Monoid.getFirst
17522128 {-# INLINE liftToJSON #-}
17532129
1754− liftToEncoding t to' = liftToEncoding t to' . getFirst
2130+ liftToEncoding t to' = liftToEncoding t to' . Monoid.getFirst
17552131 {-# INLINE liftToEncoding #-}
17562132
1757−instance ToJSON a => ToJSON (First a) where
2133+instance ToJSON a => ToJSON (Monoid.First a) where
17582134 toJSON = toJSON1
17592135 {-# INLINE toJSON #-}
17602136
@@ -1762,14 +2138,103 @@ instance ToJSON a => ToJSON (First a) where
17622138 {-# INLINE toEncoding #-}
17632139
17642140
1765−instance ToJSON1 Last where
1766− liftToJSON t to' = liftToJSON t to' . getLast
2141+instance ToJSON1 Monoid.Last where
2142+ liftToJSON t to' = liftToJSON t to' . Monoid.getLast
17672143 {-# INLINE liftToJSON #-}
17682144
1769− liftToEncoding t to' = liftToEncoding t to' . getLast
2145+ liftToEncoding t to' = liftToEncoding t to' . Monoid.getLast
17702146 {-# INLINE liftToEncoding #-}
17712147
1772−instance ToJSON a => ToJSON (Last a) where
2148+instance ToJSON a => ToJSON (Monoid.Last a) where
2149+ toJSON = toJSON1
2150+ {-# INLINE toJSON #-}
2151+
2152+ toEncoding = toEncoding1
2153+ {-# INLINE toEncoding #-}
2154+
2155+
2156+instance ToJSON1 Semigroup.Min where
2157+ liftToJSON t _ (Semigroup.Min x) = t x
2158+ {-# INLINE liftToJSON #-}
2159+
2160+ liftToEncoding t _ (Semigroup.Min x) = t x
2161+ {-# INLINE liftToEncoding #-}
2162+
2163+instance ToJSON a => ToJSON (Semigroup.Min a) where
2164+ toJSON = toJSON1
2165+ {-# INLINE toJSON #-}
2166+
2167+ toEncoding = toEncoding1
2168+ {-# INLINE toEncoding #-}
2169+
2170+
2171+instance ToJSON1 Semigroup.Max where
2172+ liftToJSON t _ (Semigroup.Max x) = t x
2173+ {-# INLINE liftToJSON #-}
2174+
2175+ liftToEncoding t _ (Semigroup.Max x) = t x
2176+ {-# INLINE liftToEncoding #-}
2177+
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
17732238 toJSON = toJSON1
17742239 {-# INLINE toJSON #-}
17752240
@@ -1780,6 +2245,13 @@ instance ToJSON a => ToJSON (Last a) where
17802245-- tagged
17812246-------------------------------------------------------------------------------
17822247
2248+instance ToJSON1 Proxy where
2249+ liftToJSON _ _ _ = Null
2250+ {-# INLINE liftToJSON #-}
2251+
2252+ liftToEncoding _ _ _ = E.null_
2253+ {-# INLINE liftToEncoding #-}
2254+
17832255instance ToJSON (Proxy a) where
17842256 toJSON _ = Null
17852257 {-# INLINE toJSON #-}
@@ -1788,6 +2260,13 @@ instance ToJSON (Proxy a) where
17882260 {-# INLINE toEncoding #-}
17892261
17902262
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+
17912270instance ToJSON1 (Tagged a) where
17922271 liftToJSON t _ (Tagged x) = t x
17932272 {-# INLINE liftToJSON #-}
@@ -1802,7 +2281,6 @@ instance ToJSON b => ToJSON (Tagged a b) where
18022281 toEncoding = toEncoding1
18032282 {-# INLINE toEncoding #-}
18042283
1805−
18062284instance ToJSONKey b => ToJSONKey (Tagged a b) where
18072285 toJSONKey = contramapToJSONKeyFunction unTagged toJSONKey
18082286 toJSONKeyList = contramapToJSONKeyFunction (fmap unTagged) toJSONKeyList
@@ -1811,34 +2289,22 @@ instance ToJSONKey b => ToJSONKey (Tagged a b) where
18112289-- Instances for converting t map keys
18122290-------------------------------------------------------------------------------
18132291
1814−-- | TODO: Move ToJSONKEyFunction to .Types(.Internal),
1815−-- export and document this function from there
1816−toJSONKeyTextEnc :: (a -> Encoding) -> ToJSONKeyFunction a
1817−toJSONKeyTextEnc e = ToJSONKeyText
1818− -- TODO: dropAround is also used in stringEncoding, which is unfortunate atm
1819− ( T.dropAround (== '"') . T.decodeLatin1 . L.toStrict . B.toLazyByteString . fromEncoding . e
1820− , e
1821− )
1822−
18232292instance (ToJSON a, ToJSON b) => ToJSONKey (a,b)
18242293instance (ToJSON a, ToJSON b, ToJSON c) => ToJSONKey (a,b,c)
18252294instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSONKey (a,b,c,d)
18262295
18272296instance ToJSONKey Char where
1828− toJSONKey = ToJSONKeyText (T.singleton, toEncoding)
1829− toJSONKeyList = ToJSONKeyText (T.pack, toEncoding . T.pack)
2297+ toJSONKey = ToJSONKeyText T.singleton (E.string . (:[]))
2298+ toJSONKeyList = toJSONKeyText T.pack
18302299
18312300instance (ToJSONKey a, ToJSON a) => ToJSONKey [a] where
18322301 toJSONKey = toJSONKeyList
18332302
1834−instance (ToJSONKey a, ToJSON a) => ToJSONKey (Identity a) where
1835− toJSONKey = contramapToJSONKeyFunction runIdentity toJSONKey
1836−
18372303-------------------------------------------------------------------------------
1838−-- Tuple instances, see tuple-instances-to.hs
2304+-- Tuple instances
18392305-------------------------------------------------------------------------------
18402306
1841−instance ToJSON2 ((,) ) where
2307+instance ToJSON2 (,) where
18422308 liftToJSON2 toA _ toB _ (a, b) = Array $ V.create $ do
18432309 mv <- VM.unsafeNew 2
18442310 VM.unsafeWrite mv 0 (toA a)
@@ -1846,9 +2312,7 @@ instance ToJSON2 ((,) ) where
18462312 return mv
18472313 {-# INLINE liftToJSON2 #-}
18482314
1849− liftToEncoding2 toA _ toB _ (a, b) = tuple $
1850− toA a >*<
1851− toB b
2315+ liftToEncoding2 toA _ toB _ (a, b) = E.list id [toA a, toB b]
18522316 {-# INLINE liftToEncoding2 #-}
18532317
18542318instance (ToJSON a) => ToJSON1 ((,) a) where
@@ -1872,10 +2336,11 @@ instance (ToJSON a) => ToJSON2 ((,,) a) where
18722336 return mv
18732337 {-# INLINE liftToJSON2 #-}
18742338
1875− liftToEncoding2 toB _ toC _ (a, b, c) = tuple $
1876− toEncoding a >*<
1877− toB b >*<
1878− toC c
2339+ liftToEncoding2 toB _ toC _ (a, b, c) = E.list id
2340+ [ toEncoding a
2341+ , toB b
2342+ , toC c
2343+ ]
18792344 {-# INLINE liftToEncoding2 #-}
18802345
18812346instance (ToJSON a, ToJSON b) => ToJSON1 ((,,) a b) where
@@ -1900,11 +2365,12 @@ instance (ToJSON a, ToJSON b) => ToJSON2 ((,,,) a b) where
19002365 return mv
19012366 {-# INLINE liftToJSON2 #-}
19022367
1903− liftToEncoding2 toC _ toD _ (a, b, c, d) = tuple $
1904− toEncoding a >*<
1905− toEncoding b >*<
1906− toC c >*<
1907− 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+ ]
19082374 {-# INLINE liftToEncoding2 #-}
19092375
19102376instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON1 ((,,,) a b c) where
@@ -1930,12 +2396,13 @@ instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON2 ((,,,,) a b c) where
19302396 return mv
19312397 {-# INLINE liftToJSON2 #-}
19322398
1933− liftToEncoding2 toD _ toE _ (a, b, c, d, e) = tuple $
1934− toEncoding a >*<
1935− toEncoding b >*<
1936− toEncoding c >*<
1937− toD d >*<
1938− 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+ ]
19392406 {-# INLINE liftToEncoding2 #-}
19402407
19412408instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON1 ((,,,,) a b c d) where
@@ -1962,13 +2429,14 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON2 ((,,,,,) a b c d) w
19622429 return mv
19632430 {-# INLINE liftToJSON2 #-}
19642431
1965− liftToEncoding2 toE _ toF _ (a, b, c, d, e, f) = tuple $
1966− toEncoding a >*<
1967− toEncoding b >*<
1968− toEncoding c >*<
1969− toEncoding d >*<
1970− toE e >*<
1971− 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+ ]
19722440 {-# INLINE liftToEncoding2 #-}
19732441
19742442instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON1 ((,,,,,) a b c d e) where
@@ -1996,14 +2464,15 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON2 ((,,,,,,)
19962464 return mv
19972465 {-# INLINE liftToJSON2 #-}
19982466
1999− liftToEncoding2 toF _ toG _ (a, b, c, d, e, f, g) = tuple $
2000− toEncoding a >*<
2001− toEncoding b >*<
2002− toEncoding c >*<
2003− toEncoding d >*<
2004− toEncoding e >*<
2005− toF f >*<
2006− 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+ ]
20072476 {-# INLINE liftToEncoding2 #-}
20082477
20092478instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON1 ((,,,,,,) a b c d e f) where
@@ -2032,15 +2501,16 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON2
20322501 return mv
20332502 {-# INLINE liftToJSON2 #-}
20342503
2035− liftToEncoding2 toG _ toH _ (a, b, c, d, e, f, g, h) = tuple $
2036− toEncoding a >*<
2037− toEncoding b >*<
2038− toEncoding c >*<
2039− toEncoding d >*<
2040− toEncoding e >*<
2041− toEncoding f >*<
2042− toG g >*<
2043− 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+ ]
20442514 {-# INLINE liftToEncoding2 #-}
20452515
20462516instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g) => ToJSON1 ((,,,,,,,) a b c d e f g) where
@@ -2070,16 +2540,17 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g)
20702540 return mv
20712541 {-# INLINE liftToJSON2 #-}
20722542
2073− liftToEncoding2 toH _ toI _ (a, b, c, d, e, f, g, h, i) = tuple $
2074− toEncoding a >*<
2075− toEncoding b >*<
2076− toEncoding c >*<
2077− toEncoding d >*<
2078− toEncoding e >*<
2079− toEncoding f >*<
2080− toEncoding g >*<
2081− toH h >*<
2082− 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+ ]
20832554 {-# INLINE liftToEncoding2 #-}
20842555
20852556instance (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
@@ -2110,17 +2581,18 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
21102581 return mv
21112582 {-# INLINE liftToJSON2 #-}
21122583
2113− liftToEncoding2 toI _ toJ _ (a, b, c, d, e, f, g, h, i, j) = tuple $
2114− toEncoding a >*<
2115− toEncoding b >*<
2116− toEncoding c >*<
2117− toEncoding d >*<
2118− toEncoding e >*<
2119− toEncoding f >*<
2120− toEncoding g >*<
2121− toEncoding h >*<
2122− toI i >*<
2123− 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+ ]
21242596 {-# INLINE liftToEncoding2 #-}
21252597
21262598instance (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
@@ -2152,18 +2624,19 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
21522624 return mv
21532625 {-# INLINE liftToJSON2 #-}
21542626
2155− liftToEncoding2 toJ _ toK _ (a, b, c, d, e, f, g, h, i, j, k) = tuple $
2156− toEncoding a >*<
2157− toEncoding b >*<
2158− toEncoding c >*<
2159− toEncoding d >*<
2160− toEncoding e >*<
2161− toEncoding f >*<
2162− toEncoding g >*<
2163− toEncoding h >*<
2164− toEncoding i >*<
2165− toJ j >*<
2166− 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+ ]
21672640 {-# INLINE liftToEncoding2 #-}
21682641
21692642instance (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
@@ -2196,19 +2669,20 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
21962669 return mv
21972670 {-# INLINE liftToJSON2 #-}
21982671
2199− liftToEncoding2 toK _ toL _ (a, b, c, d, e, f, g, h, i, j, k, l) = tuple $
2200− toEncoding a >*<
2201− toEncoding b >*<
2202− toEncoding c >*<
2203− toEncoding d >*<
2204− toEncoding e >*<
2205− toEncoding f >*<
2206− toEncoding g >*<
2207− toEncoding h >*<
2208− toEncoding i >*<
2209− toEncoding j >*<
2210− toK k >*<
2211− 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+ ]
22122686 {-# INLINE liftToEncoding2 #-}
22132687
22142688instance (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
@@ -2242,20 +2716,21 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
22422716 return mv
22432717 {-# INLINE liftToJSON2 #-}
22442718
2245− liftToEncoding2 toL _ toM _ (a, b, c, d, e, f, g, h, i, j, k, l, m) = tuple $
2246− toEncoding a >*<
2247− toEncoding b >*<
2248− toEncoding c >*<
2249− toEncoding d >*<
2250− toEncoding e >*<
2251− toEncoding f >*<
2252− toEncoding g >*<
2253− toEncoding h >*<
2254− toEncoding i >*<
2255− toEncoding j >*<
2256− toEncoding k >*<
2257− toL l >*<
2258− 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+ ]
22592734 {-# INLINE liftToEncoding2 #-}
22602735
22612736instance (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
@@ -2290,21 +2765,22 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
22902765 return mv
22912766 {-# INLINE liftToJSON2 #-}
22922767
2293− liftToEncoding2 toM _ toN _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n) = tuple $
2294− toEncoding a >*<
2295− toEncoding b >*<
2296− toEncoding c >*<
2297− toEncoding d >*<
2298− toEncoding e >*<
2299− toEncoding f >*<
2300− toEncoding g >*<
2301− toEncoding h >*<
2302− toEncoding i >*<
2303− toEncoding j >*<
2304− toEncoding k >*<
2305− toEncoding l >*<
2306− toM m >*<
2307− 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+ ]
23082784 {-# INLINE liftToEncoding2 #-}
23092785
23102786instance (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
@@ -2340,22 +2816,23 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
23402816 return mv
23412817 {-# INLINE liftToJSON2 #-}
23422818
2343− liftToEncoding2 toN _ toO _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) = tuple $
2344− toEncoding a >*<
2345− toEncoding b >*<
2346− toEncoding c >*<
2347− toEncoding d >*<
2348− toEncoding e >*<
2349− toEncoding f >*<
2350− toEncoding g >*<
2351− toEncoding h >*<
2352− toEncoding i >*<
2353− toEncoding j >*<
2354− toEncoding k >*<
2355− toEncoding l >*<
2356− toEncoding m >*<
2357− toN n >*<
2358− 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+ ]
23592836 {-# INLINE liftToEncoding2 #-}
23602837
23612838instance (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
@@ -2369,3 +2846,27 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
23692846 {-# INLINE toJSON #-}
23702847 toEncoding = toEncoding2
23712848 {-# INLINE toEncoding #-}
2849+
2850+--------------------------------------------------------------------------------
2851+
2852+-- | Wrap a list of pairs as an object.
2853+class Monoid pairs => FromPairs enc pairs | enc -> pairs where
2854+ fromPairs :: pairs -> enc
2855+
2856+instance (a ~ Value) => FromPairs (Encoding' a) Series where
2857+ fromPairs = E.pairs
2858+
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