@@ -1,27 +1,29 @@
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 #-}
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
1620
1721#include "overlapping-compat.h"
18−#include "incoherent-compat.h"
1922
2023-- TODO: Drop this when we remove support for Data.Attoparsec.Number
2124{-# OPTIONS_GHC -fno-warn-deprecations #-}
2225
23−module Data.Aeson.Types.ToJSON
24− (
26+module Data.Aeson.Types.ToJSON (
2527 -- * Core JSON classes
2628 ToJSON(..)
2729 -- * Liftings to unary and binary type constructors
@@ -33,7 +35,7 @@ module Data.Aeson.Types.ToJSON
3335 , toEncoding2
3436 -- * Generic JSON classes
3537 , GToJSON(..)
36− , ToArgs(..)
38+ , GToEncoding(..)
3739 , genericToJSON
3840 , genericToEncoding
3941 , genericLiftToJSON
@@ -41,107 +43,89 @@ module Data.Aeson.Types.ToJSON
4143 -- * Classes and types for map keys
4244 , ToJSONKey(..)
4345 , ToJSONKeyFunction(..)
44− , toJSONKeyText
4546 , contramapToJSONKeyFunction
46−
47− , GToJSONKey()
48− , genericToJSONKey
49−
5047 -- * Object key-value pairs
5148 , KeyValue(..)
52− , KeyValuePair(..)
53− , FromPairs(..)
5449 -- * Functions needed for documentation
5550 -- * Encoding functions
5651 , listEncoding
5752 , listValue
5853 ) where
5954
55+import Prelude ()
6056import Prelude.Compat
6157
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)
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
6862import Data.Aeson.Types.Internal
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 (..))
63+
64+import qualified Data.Aeson.Encode.Builder as EB
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)
9992import GHC.Generics
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
93+import Numeric.Natural (Natural)
94+
95+import qualified Data.ByteString.Builder as B
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.Text.Lazy.Builder as LTB
111+import qualified Data.Text.Lazy.Builder.Int as LTBI
112+import qualified Data.Tree as Tree
113+import qualified Data.Vector as V
114+import qualified Data.Vector.Generic as VG
115+import qualified Data.Vector.Mutable as VM
116+import qualified Data.Vector.Primitive as VP
117+import qualified Data.Vector.Storable as VS
118+import qualified Data.Vector.Unboxed as VU
119+
120+builder :: ToJSON a => a -> B.Builder
121+builder = fromEncoding . toEncoding
142122
143123toJSONPair :: (a -> Value) -> (b -> Value) -> (a, b) -> Value
144−toJSONPair a b = liftToJSON2 a (listValue a) b (listValue b)
124+toJSONPair keySerialiser valSerializer (a, b) = Array $ V.create $ do
125+ mv <- VM.unsafeNew 2
126+ VM.unsafeWrite mv 0 (keySerialiser a)
127+ VM.unsafeWrite mv 1 (valSerializer b)
128+ return mv
145129{-# INLINE toJSONPair #-}
146130
147131realFloatToJSON :: RealFloat a => a -> Value
@@ -150,59 +134,63 @@ realFloatToJSON d
150134 | otherwise = Number $ Scientific.fromFloatDigits d
151135{-# INLINE realFloatToJSON #-}
152136
137+realFloatToEncoding :: RealFloat a => a -> Encoding
138+realFloatToEncoding d
139+ | isNaN d || isInfinite d = Encoding EB.null_
140+ | otherwise = toEncoding (Scientific.fromFloatDigits d)
141+{-# INLINE realFloatToEncoding #-}
142+
153143-------------------------------------------------------------------------------
154144-- Generics
155145-------------------------------------------------------------------------------
156146
157147-- | Class of generic representation types that can be converted to
158148-- JSON.
159−class GToJSON enc arity f where
149+class GToJSON arity f where
160150 -- | This method (applied to 'defaultOptions') is used as the
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
151+ -- default generic implementation of 'toJSON' (if the @arity@ is 'Zero')
152+ -- or 'liftToJSON' (if the @arity@ is 'One').
153+ gToJSON :: Options -> Proxy arity
154+ -> (a -> Value) -> ([a] -> Value) -> f a -> Value
155+
156+-- | Class of generic representation types that can be converted to
157+-- a JSON 'Encoding'.
158+class GToEncoding arity f where
159+ -- | This method (applied to 'defaultOptions') can be used as the
160+ -- default generic implementation of 'toEncoding' (if the @arity@ is 'Zero')
161+ -- or 'liftToEncoding' (if the @arity@ is 'One').
162+ gToEncoding :: Options -> Proxy arity
163+ -> (a -> Encoding) -> ([a] -> Encoding) -> f a -> Encoding
176164
177165-- | A configurable generic JSON creator. This function applied to
178166-- 'defaultOptions' is used as the default for 'toJSON' when the type
179167-- is an instance of 'Generic'.
180−genericToJSON :: (Generic a, GToJSON Value Zero (Rep a))
168+genericToJSON :: (Generic a, GToJSON Zero (Rep a))
181169 => Options -> a -> Value
182−genericToJSON opts = gToJSON opts NoToArgs . from
170+genericToJSON opts = gToJSON opts proxyZero undefined undefined . from
183171
184172-- | A configurable generic JSON creator. This function applied to
185173-- 'defaultOptions' is used as the default for 'liftToJSON' when the type
186174-- is an instance of 'Generic1'.
187−genericLiftToJSON :: (Generic1 f, GToJSON Value One (Rep1 f))
175+genericLiftToJSON :: (Generic1 f, GToJSON One (Rep1 f))
188176 => Options -> (a -> Value) -> ([a] -> Value)
189177 -> f a -> Value
190−genericLiftToJSON opts tj tjl = gToJSON opts (To1Args tj tjl) . from1
178+genericLiftToJSON opts tj tjl = gToJSON opts proxyOne tj tjl . from1
191179
192180-- | A configurable generic JSON encoder. This function applied to
193181-- 'defaultOptions' is used as the default for 'toEncoding' when the type
194182-- is an instance of 'Generic'.
195−genericToEncoding :: (Generic a, GToJSON Encoding Zero (Rep a))
183+genericToEncoding :: (Generic a, GToEncoding Zero (Rep a))
196184 => Options -> a -> Encoding
197−genericToEncoding opts = gToJSON opts NoToArgs . from
185+genericToEncoding opts = gToEncoding opts proxyZero undefined undefined . from
198186
199187-- | A configurable generic JSON encoder. This function applied to
200188-- 'defaultOptions' is used as the default for 'liftToEncoding' when the type
201189-- is an instance of 'Generic1'.
202−genericLiftToEncoding :: (Generic1 f, GToJSON Encoding One (Rep1 f))
190+genericLiftToEncoding :: (Generic1 f, GToEncoding One (Rep1 f))
203191 => Options -> (a -> Encoding) -> ([a] -> Encoding)
204192 -> f a -> Encoding
205−genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
193+genericLiftToEncoding opts te tel = gToEncoding opts proxyOne te tel . from1
206194
207195-------------------------------------------------------------------------------
208196-- Class
@@ -210,9 +198,6 @@ genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
210198
211199-- | A type that can be converted to JSON.
212200--
213−-- Instances in general /must/ specify 'toJSON' and /should/ (but don't need
214−-- to) specify 'toEncoding'.
215−--
216201-- An example type and instance:
217202--
218203-- @
@@ -221,10 +206,10 @@ genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
221206--
222207-- data Coord = Coord { x :: Double, y :: Double }
223208--
224−-- instance 'ToJSON' Coord where
225−-- 'toJSON' (Coord x y) = 'object' [\"x\" '.=' x, \"y\" '.=' y]
209+-- instance ToJSON Coord where
210+-- toJSON (Coord x y) = 'object' [\"x\" '.=' x, \"y\" '.=' y]
226211--
227−-- 'toEncoding' (Coord x y) = 'pairs' (\"x\" '.=' x '<>' \"y\" '.=' y)
212+-- toEncoding (Coord x y) = 'pairs' (\"x\" '.=' x '<>' \"y\" '.=' y)
228213-- @
229214--
230215-- Instead of manually writing your 'ToJSON' instance, there are two options
@@ -232,15 +217,17 @@ genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
232217--
233218-- * "Data.Aeson.TH" provides Template Haskell functions which will derive an
234219-- instance at compile time. The generated instance is optimized for your type
235−-- so it will probably be more efficient than the following option.
220+-- so will probably be more efficient than the following two options:
236221--
237222-- * The compiler can provide a default generic implementation for
238223-- 'toJSON'.
239224--
240225-- To use the second, simply add a @deriving 'Generic'@ clause to your
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):
226+-- datatype and declare a 'ToJSON' instance for your datatype without giving
227+-- definitions for 'toJSON' or 'toEncoding'.
228+--
229+-- For example, the previous example can be simplified to a more
230+-- minimal instance:
244231--
245232-- @
246233-- {-\# LANGUAGE DeriveGeneric \#-}
@@ -249,46 +236,35 @@ genericLiftToEncoding opts te tel = gToJSON opts (To1Args te tel) . from1
249236--
250237-- data Coord = Coord { x :: Double, y :: Double } deriving 'Generic'
251238--
252−-- instance 'ToJSON' Coord where
253−-- 'toEncoding' = 'genericToEncoding' 'defaultOptions'
239+-- instance ToJSON Coord where
240+-- toEncoding = 'genericToEncoding' 'defaultOptions'
254241-- @
255242--
256−-- If on the other hand you wish to customize the generic decoding, you have
257−-- to implement both methods:
243+-- Why do we provide an implementation for 'toEncoding' here? The
244+-- 'toEncoding' function is a relatively new addition to this class.
245+-- To allow users of older versions of this library to upgrade without
246+-- having to edit all of their instances or encounter surprising
247+-- incompatibilities, the default implementation of 'toEncoding' uses
248+-- 'toJSON'. This produces correct results, but since it performs an
249+-- intermediate conversion to a 'Value', it will be less efficient
250+-- than directly emitting an 'Encoding'. Our one-liner definition of
251+-- 'toEncoding' above bypasses the intermediate 'Value'.
252+--
253+-- If @DefaultSignatures@ doesn't give exactly the results you want,
254+-- you can customize the generic encoding with only a tiny amount of
255+-- effort, using 'genericToJSON' and 'genericToEncoding' with your
256+-- preferred 'Options':
258257--
259258-- @
260−-- customOptions = 'defaultOptions'
261−-- { 'fieldLabelModifier' = 'map' 'Data.Char.toUpper'
262−-- }
263−--
264−-- instance 'ToJSON' Coord where
265−-- 'toJSON' = 'genericToJSON' customOptions
266−-- 'toEncoding' = 'genericToEncoding' customOptions
259+-- instance ToJSON Coord where
260+-- toJSON = 'genericToJSON' 'defaultOptions'
261+-- toEncoding = 'genericToEncoding' 'defaultOptions'
267262-- @
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.)
287263class ToJSON a where
288264 -- | Convert a Haskell value to a JSON-friendly intermediate type.
289265 toJSON :: a -> Value
290266
291− default toJSON :: (Generic a, GToJSON Value Zero (Rep a)) => a -> Value
267+ default toJSON :: (Generic a, GToJSON Zero (Rep a)) => a -> Value
292268 toJSON = genericToJSON defaultOptions
293269
294270 -- | Encode a Haskell value as JSON.
@@ -305,12 +281,12 @@ class ToJSON a where
305281 -- extension, and then have GHC generate a method body as follows.
306282 --
307283 -- @
308− -- instance 'ToJSON' Coord where
309− -- 'toEncoding' = 'genericToEncoding' 'defaultOptions'
284+ -- instance ToJSON Coord where
285+ -- toEncoding = 'genericToEncoding' 'defaultOptions'
310286 -- @
311287
312288 toEncoding :: a -> Encoding
313− toEncoding = E.value . toJSON
289+ toEncoding = E.Encoding . EB.encodeToBuilder . toJSON
314290 {-# INLINE toEncoding #-}
315291
316292 toJSONList :: [a] -> Value
@@ -331,213 +307,33 @@ class KeyValue kv where
331307 infixr 8 .=
332308
333309instance KeyValue Series where
334− name .= value = E.pair name (toEncoding value)
310+ name .= value = E.Value $ E.text name <> E.colon <> toEncoding value
335311 {-# INLINE (.=) #-}
336312
337313instance KeyValue Pair where
338314 name .= value = (name, toJSON value)
339315 {-# INLINE (.=) #-}
340316
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−
348317-------------------------------------------------------------------------------
349318-- Classes and types for map keys
350319-------------------------------------------------------------------------------
351320
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−
468321class ToJSONKey a where
469− -- | Strategy for rendering the key for a map-like container.
470322 toJSONKey :: ToJSONKeyFunction a
471323 default toJSONKey :: ToJSON a => ToJSONKeyFunction a
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.
324+ toJSONKey = ToJSONKeyValue (toJSON, toEncoding)
478325 toJSONKeyList :: ToJSONKeyFunction [a]
479326 default toJSONKeyList :: ToJSON a => ToJSONKeyFunction [a]
480− toJSONKeyList = ToJSONKeyValue toJSON toEncoding
327+ toJSONKeyList = ToJSONKeyValue (toJSON, toEncoding)
481328
482329data ToJSONKeyFunction a
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
330+ = ToJSONKeyText (a -> Text, a -> Encoding)
331+ | ToJSONKeyValue (a -> Value, a -> Encoding)
487332
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)
498−
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.
514333contramapToJSONKeyFunction :: (b -> a) -> ToJSONKeyFunction a -> ToJSONKeyFunction b
515334contramapToJSONKeyFunction h x = case x of
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
335+ ToJSONKeyText (f,g) -> ToJSONKeyText (f . h, g . h)
336+ ToJSONKeyValue (f,g) -> ToJSONKeyValue (f . h, g . h)
541337
542338-------------------------------------------------------------------------------
543339-- Lifings of FromJSON and ToJSON to unary and binary type constructors
@@ -551,7 +347,7 @@ instance GetConName f => GToJSONKey f
551347--
552348-- * "Data.Aeson.TH" provides Template Haskell functions which will derive an
553349-- instance at compile time. The generated instance is optimized for your type
554−-- so it will probably be more efficient than the following option.
350+-- so will probably be more efficient than the following two options:
555351--
556352-- * The compiler can provide a default generic implementation for
557353-- 'toJSON1'.
@@ -569,29 +365,23 @@ instance GetConName f => GToJSONKey f
569365--
570366-- data Pair = Pair { pairFst :: a, pairSnd :: b } deriving 'Generic1'
571367--
572−-- instance 'ToJSON' a => 'ToJSON1' (Pair a)
368+-- instance ToJSON a => ToJSON1 (Pair a)
573369-- @
574370--
575−-- If the default implementation doesn't give exactly the results you want,
371+-- If @DefaultSignatures@ doesn't give exactly the results you want,
576372-- you can customize the generic encoding with only a tiny amount of
577373-- effort, using 'genericLiftToJSON' and 'genericLiftToEncoding' with
578374-- your preferred 'Options':
579375--
580376-- @
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
377+-- instance ToJSON a => ToJSON1 (Pair a) where
378+-- liftToJSON = 'genericLiftToJSON' 'defaultOptions'
379+-- liftToEncoding = 'genericLiftToEncoding' 'defaultOptions'
588380-- @
589−--
590−-- See also 'ToJSON'.
591381class ToJSON1 f where
592382 liftToJSON :: (a -> Value) -> ([a] -> Value) -> f a -> Value
593383
594− default liftToJSON :: (Generic1 f, GToJSON Value One (Rep1 f))
384+ default liftToJSON :: (Generic1 f, GToJSON One (Rep1 f))
595385 => (a -> Value) -> ([a] -> Value) -> f a -> Value
596386 liftToJSON = genericLiftToJSON defaultOptions
597387
@@ -600,7 +390,7 @@ class ToJSON1 f where
600390
601391 liftToEncoding :: (a -> Encoding) -> ([a] -> Encoding) -> f a -> Encoding
602392
603− default liftToEncoding :: (Generic1 f, GToJSON Encoding One (Rep1 f))
393+ default liftToEncoding :: (Generic1 f, GToEncoding One (Rep1 f))
604394 => (a -> Encoding) -> ([a] -> Encoding)
605395 -> f a -> Encoding
606396 liftToEncoding = genericLiftToEncoding defaultOptions
@@ -648,25 +438,9 @@ toEncoding2 = liftToEncoding2 toEncoding toEncodingList toEncoding toEncodingLis
648438-- Encoding functions
649439-------------------------------------------------------------------------------
650440
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−-- @
665441listEncoding :: (a -> Encoding) -> [a] -> Encoding
666442listEncoding = E.list
667−{-# INLINE listEncoding #-}
668443
669−-- | Helper function to use with 'liftToJSON', see 'listEncoding'.
670444listValue :: (a -> Value) -> [a] -> Value
671445listValue f = Array . V.fromList . map f
672446{-# INLINE listValue #-}
@@ -685,11 +459,6 @@ instance ToJSON1 [] where
685459 {-# INLINE liftToEncoding #-}
686460
687461instance (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−
693462 toJSON = toJSON1
694463 {-# INLINE toJSON #-}
695464
@@ -700,260 +469,283 @@ instance (ToJSON a) => ToJSON [a] where
700469-- Generic toJSON / toEncoding
701470-------------------------------------------------------------------------------
702471
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−
744472--------------------------------------------------------------------------------
745473-- Generic toJSON
746474
747−-- Note: Refactoring 'ToJSON a' to 'ToJSON enc a' (and 'ToJSON1' similarly) is
748−-- possible but makes error messages a bit harder to understand for missing
749−-- instances.
750−
751−instance GToJSON Value arity V1 where
752− -- Empty values do not exist, which makes the job of formatting them
753− -- rather easy:
754− gToJSON _ _ x = x `seq` error "case: V1"
755− {-# INLINE gToJSON #-}
475+instance OVERLAPPABLE_ (GToJSON arity a) => GToJSON arity (M1 i c a) where
476+ -- Meta-information, which is not handled elsewhere, is ignored:
477+ gToJSON opts pa tj tjl = gToJSON opts pa tj tjl . unM1
756478
757−instance ToJSON a => GToJSON Value arity (K1 i a) where
479+instance (ToJSON a) => GToJSON arity (K1 i a) where
758480 -- Constant values are encoded using their ToJSON instance:
759− gToJSON _opts _ = toJSON . unK1
760− {-# INLINE gToJSON #-}
481+ gToJSON _opts _ _ _ = toJSON . unK1
482+
483+instance GToJSON One Par1 where
484+ -- Direct occurrences of the last type parameter are encoded with the
485+ -- function passed in as an argument:
486+ gToJSON _opts _ tj _ = tj . unPar1
761487
762−instance ToJSON1 f => GToJSON Value One (Rec1 f) where
488+instance (ToJSON1 f) => GToJSON One (Rec1 f) where
763489 -- Recursive occurrences of the last type parameter are encoded using their
764490 -- ToJSON1 instance:
765− gToJSON _opts (To1Args tj tjl) = liftToJSON tj tjl . unRec1
766− {-# INLINE gToJSON #-}
491+ gToJSON _opts _ tj tjl = liftToJSON tj tjl . unRec1
767492
768−instance GToJSON Value arity U1 where
493+instance GToJSON arity U1 where
769494 -- Empty constructors are encoded to an empty array:
770− gToJSON _opts _ _ = emptyArray
771− {-# INLINE gToJSON #-}
495+ gToJSON _opts _ _ _ _ = emptyArray
496+
497+instance (ConsToJSON arity a) => GToJSON arity (C1 c a) where
498+ -- Constructors need to be encoded differently depending on whether they're
499+ -- a record or not. This distinction is made by 'consToJSON':
500+ gToJSON opts pa tj tjl = consToJSON opts pa tj tjl . unM1
772501
773502instance ( WriteProduct arity a, WriteProduct arity b
774503 , ProductSize a, ProductSize b
775− ) => GToJSON Value arity (a :*: b)
776− where
504+ ) => GToJSON arity (a :*: b) where
777505 -- Products are encoded to an array. Here we allocate a mutable vector of
778506 -- the same size as the product and write the product's elements to it using
779507 -- 'writeProduct':
780− gToJSON opts targs p =
508+ gToJSON opts pa tj tjl p =
781509 Array $ V.create $ do
782510 mv <- VM.unsafeNew lenProduct
783− writeProduct opts targs mv 0 lenProduct p
511+ writeProduct opts pa mv 0 lenProduct tj tjl p
784512 return mv
785513 where
786514 lenProduct = (unTagged2 :: Tagged2 (a :*: b) Int -> Int)
787515 productSize
788− {-# INLINE gToJSON #-}
789516
790−instance ( ToJSON1 f
791− , GToJSON Value One g
792− ) => GToJSON Value One (f :.: g)
793− where
517+instance ( AllNullary (a :+: b) allNullary
518+ , SumToJSON arity (a :+: b) allNullary
519+ ) => GToJSON arity (a :+: b) where
520+ -- If all constructors of a sum datatype are nullary and the
521+ -- 'allNullaryToStringTag' option is set they are encoded to
522+ -- strings. This distinction is made by 'sumToJSON':
523+ gToJSON opts pa tj tjl = (unTagged :: Tagged allNullary Value -> Value)
524+ . sumToJSON opts pa tj tjl
525+
526+instance (ToJSON1 f, GToJSON One g) => GToJSON One (f :.: g) where
794527 -- If an occurrence of the last type parameter is nested inside two
795528 -- composed types, it is encoded by using the outermost type's ToJSON1
796529 -- instance to generically encode the innermost type:
797− gToJSON opts targs =
798− let gtj = gToJSON opts targs in
530+ gToJSON opts pa tj tjl =
531+ let gtj = gToJSON opts pa tj tjl in
799532 liftToJSON gtj (listValue gtj) . unComp1
800− {-# INLINE gToJSON #-}
801533
802534--------------------------------------------------------------------------------
803535-- Generic toEncoding
804536
805−instance ToJSON a => GToJSON Encoding arity (K1 i a) where
537+instance OVERLAPPABLE_ (GToEncoding arity a) => GToEncoding arity (M1 i c a) where
538+ -- Meta-information, which is not handled elsewhere, is ignored:
539+ gToEncoding opts pa te tel = gToEncoding opts pa te tel . unM1
540+
541+instance (ToJSON a) => GToEncoding arity (K1 i a) where
806542 -- Constant values are encoded using their ToJSON instance:
807− gToJSON _opts _ = toEncoding . unK1
808− {-# INLINE gToJSON #-}
543+ gToEncoding _opts _ _ _ = toEncoding . unK1
544+
545+instance GToEncoding One Par1 where
546+ -- Direct occurrences of the last type parameter are encoded with the
547+ -- function passed in as an argument:
548+ gToEncoding _opts _ te _ = te . unPar1
809549
810−instance ToJSON1 f => GToJSON Encoding One (Rec1 f) where
550+instance (ToJSON1 f) => GToEncoding One (Rec1 f) where
811551 -- Recursive occurrences of the last type parameter are encoded using their
812552 -- ToEncoding1 instance:
813− gToJSON _opts (To1Args te tel) = liftToEncoding te tel . unRec1
814− {-# INLINE gToJSON #-}
553+ gToEncoding _opts _ te tel = liftToEncoding te tel . unRec1
815554
816−instance GToJSON Encoding arity U1 where
555+instance GToEncoding arity U1 where
817556 -- Empty constructors are encoded to an empty array:
818− gToJSON _opts _ _ = E.emptyArray_
819− {-# INLINE gToJSON #-}
557+ gToEncoding _opts _ _ _ _ = E.emptyArray_
558+
559+instance (ConsToEncoding arity a) => GToEncoding arity (C1 c a) where
560+ -- Constructors need to be encoded differently depending on whether they're
561+ -- a record or not. This distinction is made by 'consToEncoding':
562+ gToEncoding opts pa te tel = consToEncoding opts pa te tel . unM1
820563
821564instance ( EncodeProduct arity a
822565 , EncodeProduct arity b
823− ) => GToJSON Encoding arity (a :*: b)
824− where
566+ ) => GToEncoding arity (a :*: b) where
825567 -- Products are encoded to an array. Here we allocate a mutable vector of
826568 -- the same size as the product and write the product's elements to it using
827569 -- 'encodeProduct':
828− gToJSON opts targs p = E.list E.retagEncoding [encodeProduct opts targs p]
829− {-# INLINE gToJSON #-}
570+ gToEncoding opts pa te tel p = E.tuple $ encodeProduct opts pa te tel p
571+
572+instance ( AllNullary (a :+: b) allNullary
573+ , SumToEncoding arity (a :+: b) allNullary
574+ ) => GToEncoding arity (a :+: b) where
575+ -- If all constructors of a sum datatype are nullary and the
576+ -- 'allNullaryToStringTag' option is set they are encoded to
577+ -- strings. This distinction is made by 'sumToEncoding':
578+ gToEncoding opts pa te tel
579+ = (unTagged :: Tagged allNullary Encoding -> Encoding)
580+ . sumToEncoding opts pa te tel
830581
831−instance ( ToJSON1 f
832− , GToJSON Encoding One g
833− ) => GToJSON Encoding One (f :.: g)
834− where
582+instance (ToJSON1 f, GToEncoding One g) => GToEncoding One (f :.: g) where
835583 -- If an occurrence of the last type parameter is nested inside two
836584 -- composed types, it is encoded by using the outermost type's ToJSON1
837585 -- instance to generically encode the innermost type:
838− gToJSON opts targs =
839− let gte = gToJSON opts targs in
586+ gToEncoding opts pa te tel =
587+ let gte = gToEncoding opts pa te tel in
840588 liftToEncoding gte (listEncoding gte) . unComp1
841− {-# INLINE gToJSON #-}
842589
843590--------------------------------------------------------------------------------
844591
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
592+class SumToJSON arity f allNullary where
593+ sumToJSON :: Options -> Proxy arity
594+ -> (a -> Value) -> ([a] -> Value)
595+ -> f a -> Tagged allNullary Value
596+
597+instance ( GetConName f
598+ , TaggedObjectPairs arity f
599+ , ObjectWithSingleFieldObj arity f
600+ , TwoElemArrayObj arity f
601+ ) => SumToJSON arity f True where
602+ sumToJSON opts pa tj tjl
603+ | allNullaryToStringTag opts = Tagged . String . pack
859604 . constructorTagModifier opts . getConName
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 =
605+ | otherwise = Tagged . nonAllNullarySumToJSON opts pa tj tjl
606+
607+instance ( TwoElemArrayObj arity f
608+ , TaggedObjectPairs arity f
609+ , ObjectWithSingleFieldObj arity f
610+ ) => SumToJSON arity f False where
611+ sumToJSON opts pa tj tjl = Tagged . nonAllNullarySumToJSON opts pa tj tjl
612+
613+nonAllNullarySumToJSON :: ( TwoElemArrayObj arity f
614+ , TaggedObjectPairs arity f
615+ , ObjectWithSingleFieldObj arity f
616+ ) => Options -> Proxy arity
617+ -> (a -> Value) -> ([a] -> Value)
618+ -> f a -> Value
619+nonAllNullarySumToJSON opts pa tj tjl =
877620 case sumEncoding opts of
878−
879621 TaggedObject{..} ->
880− taggedObject opts targs tagFieldName contentsFieldName
622+ object . taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl
623+ ObjectWithSingleField -> Object . objectWithSingleFieldObj opts pa tj tjl
624+ TwoElemArray -> Array . twoElemArrayObj opts pa tj tjl
881625
882− ObjectWithSingleField ->
883− (unTagged :: Tagged ObjectWithSingleField enc -> enc)
884− . sumToJSON' opts targs
885−
886− TwoElemArray ->
887− (unTagged :: Tagged TwoElemArray enc -> enc)
888− . sumToJSON' opts targs
626+--------------------------------------------------------------------------------
889627
890− UntaggedValue ->
891− (unTagged :: Tagged UntaggedValue enc -> enc)
892− . sumToJSON' opts targs
628+class SumToEncoding arity f allNullary where
629+ sumToEncoding :: Options -> Proxy arity
630+ -> (a -> Encoding) -> ([a] -> Encoding)
631+ -> f a -> Tagged allNullary Encoding
632+
633+instance ( GetConName f
634+ , TaggedObjectEnc arity f
635+ , ObjectWithSingleFieldEnc arity f
636+ , TwoElemArrayEnc arity f
637+ ) => SumToEncoding arity f True where
638+ sumToEncoding opts pa te tel
639+ | allNullaryToStringTag opts = Tagged . toEncoding .
640+ constructorTagModifier opts . getConName
641+ | otherwise = Tagged . nonAllNullarySumToEncoding opts pa te tel
642+
643+instance ( TwoElemArrayEnc arity f
644+ , TaggedObjectEnc arity f
645+ , ObjectWithSingleFieldEnc arity f
646+ ) => SumToEncoding arity f False where
647+ sumToEncoding opts pa te tel = Tagged . nonAllNullarySumToEncoding opts pa te tel
648+
649+nonAllNullarySumToEncoding :: ( TwoElemArrayEnc arity f
650+ , TaggedObjectEnc arity f
651+ , ObjectWithSingleFieldEnc arity f
652+ ) => Options -> Proxy arity
653+ -> (a -> Encoding) -> ([a] -> Encoding)
654+ -> f a -> Encoding
655+nonAllNullarySumToEncoding opts pa te tel =
656+ case sumEncoding opts of
657+ TaggedObject{..} ->
658+ taggedObjectEnc opts pa tagFieldName contentsFieldName te tel
659+ ObjectWithSingleField -> objectWithSingleFieldEnc opts pa te tel
660+ TwoElemArray -> twoElemArrayEnc opts pa te tel
893661
894662--------------------------------------------------------------------------------
895663
896−class FromString enc where
897− fromString :: String -> enc
664+class TaggedObjectPairs arity f where
665+ taggedObjectPairs :: Options -> Proxy arity
666+ -> String -> String
667+ -> (a -> Value) -> ([a] -> Value)
668+ -> f a -> [Pair]
669+
670+instance ( TaggedObjectPairs arity a
671+ , TaggedObjectPairs arity b
672+ ) => TaggedObjectPairs arity (a :+: b) where
673+ taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl (L1 x) =
674+ taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl x
675+ taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl (R1 x) =
676+ taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl x
677+
678+instance ( IsRecord a isRecord
679+ , TaggedObjectPairs' arity a isRecord
680+ , Constructor c
681+ ) => TaggedObjectPairs arity (C1 c a) where
682+ taggedObjectPairs opts pa tagFieldName contentsFieldName tj tjl =
683+ (pack tagFieldName .= constructorTagModifier opts
684+ (conName (undefined :: t c a p)) :) .
685+ (unTagged :: Tagged isRecord [Pair] -> [Pair]) .
686+ taggedObjectPairs' opts pa contentsFieldName tj tjl . unM1
687+
688+class TaggedObjectPairs' arity f isRecord where
689+ taggedObjectPairs' :: Options -> Proxy arity
690+ -> String -> (a -> Value) -> ([a] -> Value)
691+ -> f a -> Tagged isRecord [Pair]
898692
899−instance FromString Encoding where
900− fromString = toEncoding
693+instance OVERLAPPING_ TaggedObjectPairs' arity U1 False where
694+ taggedObjectPairs' _ _ _ _ _ _ = Tagged []
901695
902−instance FromString Value where
903− fromString = String . pack
696+instance (RecordToPairs arity f) => TaggedObjectPairs' arity f True where
697+ taggedObjectPairs' opts pa _ tj tjl =
698+ Tagged . toList . recordToPairs opts pa tj tjl
699+
700+instance (GToJSON arity f) => TaggedObjectPairs' arity f False where
701+ taggedObjectPairs' opts pa contentsFieldName tj tjl =
702+ Tagged . (:[]) . (pack contentsFieldName .=) . gToJSON opts pa tj tjl
904703
905704--------------------------------------------------------------------------------
906705
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
706+class TaggedObjectEnc arity f where
707+ taggedObjectEnc :: Options -> Proxy arity
708+ -> String -> String
709+ -> (a -> Encoding) -> ([a] -> Encoding)
710+ -> f a -> Encoding
711+
712+instance ( TaggedObjectEnc arity a
713+ , TaggedObjectEnc arity b
714+ ) => TaggedObjectEnc arity (a :+: b) where
715+ taggedObjectEnc opts pa tagFieldName contentsFieldName te tel (L1 x) =
716+ taggedObjectEnc opts pa tagFieldName contentsFieldName te tel x
717+ taggedObjectEnc opts pa tagFieldName contentsFieldName te tel (R1 x) =
718+ taggedObjectEnc opts pa tagFieldName contentsFieldName te tel x
719+
720+instance ( IsRecord a isRecord
721+ , TaggedObjectEnc' arity a isRecord
926722 , Constructor c
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
723+ ) => TaggedObjectEnc arity (C1 c a) where
724+ taggedObjectEnc opts pa tagFieldName contentsFieldName te tel v =
725+ E.openCurly <>
726+ (toEncoding tagFieldName <>
727+ E.colon <>
728+ toEncoding (constructorTagModifier opts (conName (undefined :: t c a p)))) <>
729+ ((unTagged :: Tagged isRecord Encoding -> Encoding) .
730+ taggedObjectEnc' opts pa contentsFieldName te tel . unM1 $ v) <>
731+ E.closeCurly
732+
733+class TaggedObjectEnc' arity f isRecord where
734+ taggedObjectEnc' :: Options -> Proxy arity
735+ -> String -> (a -> Encoding) -> ([a] -> Encoding)
736+ -> f a -> Tagged isRecord Encoding
737+
738+instance OVERLAPPING_ TaggedObjectEnc' arity U1 False where
739+ taggedObjectEnc' _ _ _ _ _ _ = Tagged mempty
740+
741+instance (RecordToEncoding arity f) => TaggedObjectEnc' arity f True where
742+ taggedObjectEnc' opts pa _ te tel = Tagged . (E.comma <>) . fst
743+ . recordToEncoding opts pa te tel
744+
745+instance (GToEncoding arity f) => TaggedObjectEnc' arity f False where
746+ taggedObjectEnc' opts pa contentsFieldName te tel =
747+ Tagged . (\z -> E.comma <> toEncoding contentsFieldName <> E.colon <> z) .
748+ gToEncoding opts pa te tel
957749
958750--------------------------------------------------------------------------------
959751
@@ -968,242 +760,283 @@ instance (GetConName a, GetConName b) => GetConName (a :+: b) where
968760instance (Constructor c) => GetConName (C1 c a) where
969761 getConName = conName
970762
971−-- For genericToJSONKey
972−instance GetConName a => GetConName (D1 d a) where
973− getConName (M1 x) = getConName x
974−
975763--------------------------------------------------------------------------------
976764
977−-- Reflection of SumEncoding variants
978−
979−data ObjectWithSingleField
980−data TwoElemArray
981−data UntaggedValue
982−
983−--------------------------------------------------------------------------------
765+class TwoElemArrayObj arity f where
766+ twoElemArrayObj :: Options -> Proxy arity
767+ -> (a -> Value) -> ([a] -> Value)
768+ -> f a -> V.Vector Value
984769
985−class SumToJSON' s enc arity f where
986− sumToJSON' :: Options -> ToArgs enc arity a
987− -> f a -> Tagged s enc
770+instance ( TwoElemArrayObj arity a
771+ , TwoElemArrayObj arity b
772+ ) => TwoElemArrayObj arity (a :+: b) where
773+ twoElemArrayObj opts pa tj tjl (L1 x) = twoElemArrayObj opts pa tj tjl x
774+ twoElemArrayObj opts pa tj tjl (R1 x) = twoElemArrayObj opts pa tj tjl x
988775
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
776+instance ( GToJSON arity a
777+ , ConsToJSON arity a
1000778 , Constructor c
1001− ) => SumToJSON' TwoElemArray Value arity (C1 c a) where
1002− sumToJSON' opts targs x = Tagged $ Array $ V.create $ do
779+ ) => TwoElemArrayObj arity (C1 c a) where
780+ twoElemArrayObj opts pa tj tjl x = V.create $ do
1003781 mv <- VM.unsafeNew 2
1004782 VM.unsafeWrite mv 0 $ String $ pack $ constructorTagModifier opts
1005783 $ conName (undefined :: t c a p)
1006− VM.unsafeWrite mv 1 $ gToJSON opts targs x
784+ VM.unsafeWrite mv 1 $ gToJSON opts pa tj tjl x
1007785 return mv
1008786
1009787--------------------------------------------------------------------------------
1010788
1011−instance ( GToJSON Encoding arity a
1012− , ConsToJSON Encoding arity a
789+class TwoElemArrayEnc arity f where
790+ twoElemArrayEnc :: Options -> Proxy arity
791+ -> (a -> Encoding) -> ([a] -> Encoding)
792+ -> f a -> Encoding
793+
794+instance ( TwoElemArrayEnc arity a
795+ , TwoElemArrayEnc arity b
796+ ) => TwoElemArrayEnc arity (a :+: b) where
797+ twoElemArrayEnc opts pa te tel (L1 x) = twoElemArrayEnc opts pa te tel x
798+ twoElemArrayEnc opts pa te tel (R1 x) = twoElemArrayEnc opts pa te tel x
799+
800+instance ( GToEncoding arity a
801+ , ConsToEncoding arity a
1013802 , Constructor c
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− ]
803+ ) => TwoElemArrayEnc arity (C1 c a) where
804+ twoElemArrayEnc opts pa te tel x = E.tuple $
805+ toEncoding (constructorTagModifier opts (conName (undefined :: t c a p))) >*<
806+ gToEncoding opts pa te tel x
807+
808+--------------------------------------------------------------------------------
809+
810+class ConsToJSON arity f where
811+ consToJSON :: Options -> Proxy arity
812+ -> (a -> Value) -> ([a] -> Value)
813+ -> f a -> Value
814+
815+class ConsToJSON' arity f isRecord where
816+ consToJSON' :: Options -> Proxy arity
817+ -> Bool -- ^ Are we a record with one field?
818+ -> (a -> Value) -> ([a] -> Value)
819+ -> f a -> Tagged isRecord Value
820+
821+instance ( IsRecord f isRecord
822+ , ConsToJSON' arity f isRecord
823+ ) => ConsToJSON arity f where
824+ consToJSON opts pa tj tjl =
825+ (unTagged :: Tagged isRecord Value -> Value)
826+ . consToJSON' opts pa (isUnary (undefined :: f a)) tj tjl
827+
828+instance (RecordToPairs arity f) => ConsToJSON' arity f True where
829+ consToJSON' opts pa isUn tj tjl f = let
830+ vals = toList $ recordToPairs opts pa tj tjl f
831+ in case (unwrapUnaryRecords opts,isUn,vals) of
832+ (True,True,[(_,val)]) -> Tagged val
833+ _ -> Tagged $ object vals
834+
835+instance GToJSON arity f => ConsToJSON' arity f False where
836+ consToJSON' opts pa _ tj tjl = Tagged . gToJSON opts pa tj tjl
1020837
1021838--------------------------------------------------------------------------------
1022839
1023−class ConsToJSON enc arity f where
1024− consToJSON :: Options -> ToArgs enc arity a
1025− -> f a -> enc
840+class ConsToEncoding arity f where
841+ consToEncoding :: Options -> Proxy arity
842+ -> (a -> Encoding) -> ([a] -> Encoding)
843+ -> f a -> Encoding
1026844
1027−class ConsToJSON' enc arity f isRecord where
1028− consToJSON' :: Options -> ToArgs enc arity a
1029− -> f a -> Tagged isRecord enc
845+class ConsToEncoding' arity f isRecord where
846+ consToEncoding' :: Options -> Proxy arity
847+ -> Bool -- ^ Are we a record with one field?
848+ -> (a -> Encoding) -> ([a] -> Encoding)
849+ -> f a -> Tagged isRecord Encoding
1030850
1031851instance ( IsRecord f isRecord
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' #-}
852+ , ConsToEncoding' arity f isRecord
853+ ) => ConsToEncoding arity f where
854+ consToEncoding opts pa te tel =
855+ (unTagged :: Tagged isRecord Encoding -> Encoding)
856+ . consToEncoding' opts pa (isUnary (undefined :: f a)) te tel
857+
858+instance (RecordToEncoding arity f) => ConsToEncoding' arity f True where
859+ consToEncoding' opts pa isUn te tel x =
860+ let (enc, mbVal) = recordToEncoding opts pa te tel x
861+ in case (unwrapUnaryRecords opts, isUn, mbVal) of
862+ (True, True, Just val) -> Tagged val
863+ _ -> Tagged $ E.wrapObject enc
864+
865+instance GToEncoding arity f => ConsToEncoding' arity f False where
866+ consToEncoding' opts pa _ te tel = Tagged . gToEncoding opts pa te tel
1061867
1062868--------------------------------------------------------------------------------
1063869
1064−class RecordToPairs enc pairs arity f where
870+class RecordToPairs arity f where
871+ recordToPairs :: Options -> Proxy arity
872+ -> (a -> Value) -> ([a] -> Value)
873+ -> f a -> DList Pair
874+
875+instance ( RecordToPairs arity a
876+ , RecordToPairs arity b
877+ ) => RecordToPairs arity (a :*: b) where
878+ recordToPairs opts pa tj tjl (a :*: b) = recordToPairs opts pa tj tjl a <>
879+ recordToPairs opts pa tj tjl b
880+
881+instance (Selector s, GToJSON arity a) => RecordToPairs arity (S1 s a) where
882+ recordToPairs = fieldToPair
883+
884+instance OVERLAPPING_ (Selector s, ToJSON a) =>
885+ RecordToPairs arity (S1 s (K1 i (Maybe a))) where
886+ recordToPairs opts _ _ _ (M1 k1) | omitNothingFields opts
887+ , K1 Nothing <- k1 = DList.empty
888+ recordToPairs opts pa tj tjl m1 = fieldToPair opts pa tj tjl m1
889+
890+fieldToPair :: (Selector s, GToJSON arity a)
891+ => Options -> Proxy arity
892+ -> (p -> Value) -> ([p] -> Value)
893+ -> S1 s a p -> DList Pair
894+fieldToPair opts pa tj tjl m1 = pure ( pack $ fieldLabelModifier opts $ selName m1
895+ , gToJSON opts pa tj tjl (unM1 m1)
896+ )
897+
898+--------------------------------------------------------------------------------
899+
900+class RecordToEncoding arity f where
1065901 -- 1st element: whole thing
1066902 -- 2nd element: in case the record has only 1 field, just the value
1067903 -- of the field (without the key); 'Nothing' otherwise
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 #-}
904+ recordToEncoding :: Options -> Proxy arity
905+ -> (a -> Encoding) -> ([a] -> Encoding)
906+ -> f a -> (Encoding, Maybe Encoding)
907+
908+instance ( RecordToEncoding arity a
909+ , RecordToEncoding arity b
910+ ) => RecordToEncoding arity (a :*: b) where
911+ recordToEncoding opts pa te tel (a :*: b) | omitNothingFields opts =
912+ (mconcat $ intersperse E.comma $
913+ filter (not . E.nullEncoding)
914+ [ fst (recordToEncoding opts pa te tel a)
915+ , fst (recordToEncoding opts pa te tel b) ]
916+ , Nothing)
917+ recordToEncoding opts pa te tel (a :*: b) =
918+ (fst (recordToEncoding opts pa te tel a) <> E.comma <>
919+ fst (recordToEncoding opts pa te tel b),
920+ Nothing)
921+
922+instance (Selector s, GToEncoding arity a) => RecordToEncoding arity (S1 s a) where
923+ recordToEncoding = fieldToEncoding
924+
925+instance OVERLAPPING_ (Selector s, ToJSON a) =>
926+ RecordToEncoding arity (S1 s (K1 i (Maybe a))) where
927+ recordToEncoding opts _ _ _ (M1 k1) | omitNothingFields opts
928+ , K1 Nothing <- k1 = (mempty, Nothing)
929+ recordToEncoding opts pa te tel m1 = fieldToEncoding opts pa te tel m1
930+
931+fieldToEncoding :: (Selector s, GToEncoding arity a)
932+ => Options -> Proxy arity
933+ -> (p -> Encoding) -> ([p] -> Encoding)
934+ -> S1 s a p -> (Encoding, Maybe Encoding)
935+fieldToEncoding opts pa te tel m1 =
936+ let keyBuilder = toEncoding (fieldLabelModifier opts $ selName m1)
937+ valueBuilder = gToEncoding opts pa te tel (unM1 m1)
938+ in (keyBuilder <> E.colon <> valueBuilder, Just valueBuilder)
1126939
1127940--------------------------------------------------------------------------------
1128941
1129942class WriteProduct arity f where
1130943 writeProduct :: Options
1131− -> ToArgs Value arity a
944+ -> Proxy arity
1132945 -> VM.MVector s Value
1133946 -> Int -- ^ index
1134947 -> Int -- ^ length
948+ -> (a -> Value)
949+ -> ([a] -> Value)
1135950 -> f a
1136951 -> ST s ()
1137952
1138953instance ( WriteProduct arity a
1139954 , WriteProduct arity b
1140955 ) => WriteProduct arity (a :*: b) where
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
956+ writeProduct opts pa mv ix len tj tjl (a :*: b) = do
957+ writeProduct opts pa mv ix lenL tj tjl a
958+ writeProduct opts pa mv ixR lenR tj tjl b
1144959 where
1145960 lenL = len `unsafeShiftR` 1
1146961 lenR = len - lenL
1147962 ixR = ix + lenL
1148− {-# INLINE writeProduct #-}
1149963
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 #-}
964+instance OVERLAPPABLE_ (GToJSON arity a) => WriteProduct arity a where
965+ writeProduct opts pa mv ix _ tj tjl =
966+ VM.unsafeWrite mv ix . gToJSON opts pa tj tjl
1154967
1155968--------------------------------------------------------------------------------
1156969
1157970class EncodeProduct arity f where
1158− encodeProduct :: Options -> ToArgs Encoding arity a
1159− -> f a -> Encoding' E.InArray
971+ encodeProduct :: Options -> Proxy arity
972+ -> (a -> Encoding) -> ([a] -> Encoding)
973+ -> f a -> Encoding
1160974
1161975instance ( EncodeProduct arity a
1162976 , EncodeProduct arity b
1163977 ) => EncodeProduct arity (a :*: b) where
1164− encodeProduct opts targs (a :*: b) | omitNothingFields opts =
1165− E.econcat $ intersperse E.comma $
978+ encodeProduct opts pa te tel (a :*: b) | omitNothingFields opts =
979+ mconcat $ intersperse E.comma $
1166980 filter (not . E.nullEncoding)
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 #-}
981+ [encodeProduct opts pa te tel a, encodeProduct opts pa te tel b]
982+ encodeProduct opts pa te tel (a :*: b) = encodeProduct opts pa te tel a <>
983+ E.comma <>
984+ encodeProduct opts pa te tel b
1172985
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 #-}
986+instance OVERLAPPABLE_ (GToEncoding arity a) => EncodeProduct arity a where
987+ encodeProduct opts = gToEncoding opts
1176988
1177989--------------------------------------------------------------------------------
1178990
1179−instance ( GToJSON enc arity a
1180− , ConsToJSON enc arity a
1181− , FromPairs enc pairs
1182− , KeyValuePair enc pairs
991+class ObjectWithSingleFieldObj arity f where
992+ objectWithSingleFieldObj :: Options -> Proxy arity
993+ -> (a -> Value) -> ([a] -> Value)
994+ -> f a -> Object
995+
996+instance ( ObjectWithSingleFieldObj arity a
997+ , ObjectWithSingleFieldObj arity b
998+ ) => ObjectWithSingleFieldObj arity (a :+: b) where
999+ objectWithSingleFieldObj opts pa tj tjl (L1 x) =
1000+ objectWithSingleFieldObj opts pa tj tjl x
1001+ objectWithSingleFieldObj opts pa tj tjl (R1 x) =
1002+ objectWithSingleFieldObj opts pa tj tjl x
1003+
1004+instance ( GToJSON arity a
1005+ , ConsToJSON arity a
11831006 , Constructor c
1184− ) => SumToJSON' ObjectWithSingleField enc arity (C1 c a)
1185− where
1186− sumToJSON' opts targs =
1187− Tagged . fromPairs . (typ `pair`) . gToJSON opts targs
1007+ ) => ObjectWithSingleFieldObj arity (C1 c a) where
1008+ objectWithSingleFieldObj opts pa tj tjl = H.singleton typ . gToJSON opts pa tj tjl
11881009 where
1189− typ = constructorTagModifier opts $
1010+ typ = pack $ constructorTagModifier opts $
11901011 conName (undefined :: t c a p)
11911012
11921013--------------------------------------------------------------------------------
11931014
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)
1015+class ObjectWithSingleFieldEnc arity f where
1016+ objectWithSingleFieldEnc :: Options -> Proxy arity
1017+ -> (a -> Encoding) -> ([a] -> Encoding)
1018+ -> f a -> Encoding
1019+
1020+instance ( ObjectWithSingleFieldEnc arity a
1021+ , ObjectWithSingleFieldEnc arity b
1022+ ) => ObjectWithSingleFieldEnc arity (a :+: b) where
1023+ objectWithSingleFieldEnc opts pa te tel (L1 x) =
1024+ objectWithSingleFieldEnc opts pa te tel x
1025+ objectWithSingleFieldEnc opts pa te tel (R1 x) =
1026+ objectWithSingleFieldEnc opts pa te tel x
1027+
1028+instance ( GToEncoding arity a
1029+ , ConsToEncoding arity a
1030+ , Constructor c
1031+ ) => ObjectWithSingleFieldEnc arity (C1 c a) where
1032+ objectWithSingleFieldEnc opts pa te tel v =
1033+ E.openCurly <>
1034+ toEncoding
1035+ (constructorTagModifier opts
1036+ (conName (undefined :: t c a p))) <>
1037+ E.colon <>
1038+ gToEncoding opts pa te tel v <>
1039+ E.closeCurly
12071040
12081041-------------------------------------------------------------------------------
12091042-- Instances
@@ -1213,6 +1046,21 @@ instance OVERLAPPING_
12131046-- base
12141047-------------------------------------------------------------------------------
12151048
1049+instance ToJSON1 Identity where
1050+ liftToJSON t _ (Identity a) = t a
1051+ {-# INLINE liftToJSON #-}
1052+
1053+ liftToEncoding t _ (Identity a) = t a
1054+ {-# INLINE liftToEncoding #-}
1055+
1056+instance (ToJSON a) => ToJSON (Identity a) where
1057+ toJSON = toJSON1
1058+ {-# INLINE toJSON #-}
1059+
1060+ toEncoding = toEncoding1
1061+ {-# INLINE toEncoding #-}
1062+
1063+
12161064instance ToJSON2 Const where
12171065 liftToJSON2 t _ _ _ (Const x) = t x
12181066 {-# INLINE liftToJSON2 #-}
@@ -1241,7 +1089,7 @@ instance ToJSON1 Maybe where
12411089 {-# INLINE liftToJSON #-}
12421090
12431091 liftToEncoding t _ (Just a) = t a
1244− liftToEncoding _ _ Nothing = E.null_
1092+ liftToEncoding _ _ Nothing = Encoding EB.null_
12451093 {-# INLINE liftToEncoding #-}
12461094
12471095instance (ToJSON a) => ToJSON (Maybe a) where
@@ -1253,13 +1101,19 @@ instance (ToJSON a) => ToJSON (Maybe a) where
12531101
12541102
12551103instance ToJSON2 Either where
1256− liftToJSON2 toA _ _toB _ (Left a) = Object $ H.singleton "Left" (toA a)
1257− liftToJSON2 _toA _ toB _ (Right b) = Object $ H.singleton "Right" (toB b)
1104+ liftToJSON2 toA _ _toB _ (Left a) = Object $ H.singleton left (toA a)
1105+ liftToJSON2 _toA _ toB _ (Right b) = Object $ H.singleton right (toB b)
12581106 {-# INLINE liftToJSON2 #-}
12591107
1260− liftToEncoding2 toA _ _toB _ (Left a) = E.pairs $ E.pair "Left" $ toA a
1108+ liftToEncoding2 toA _ _toB _ (Left a) =
1109+ Encoding (B.shortByteString "{\"Left\":")
1110+ <> toA a
1111+ <> Encoding (B.char7 '}')
12611112
1262− liftToEncoding2 _toA _ toB _ (Right b) = E.pairs $ E.pair "Right" $ toB b
1113+ liftToEncoding2 _toA _ toB _ (Right b) =
1114+ Encoding (B.shortByteString "{\"Right\":")
1115+ <> toB b
1116+ <> Encoding (B.char7 '}')
12631117 {-# INLINE liftToEncoding2 #-}
12641118
12651119instance (ToJSON a) => ToJSON1 (Either a) where
@@ -1276,24 +1130,18 @@ instance (ToJSON a, ToJSON b) => ToJSON (Either a b) where
12761130 toEncoding = toEncoding2
12771131 {-# INLINE toEncoding #-}
12781132
1279−instance ToJSON Void where
1280− toJSON = absurd
1281− {-# INLINE toJSON #-}
1282−
1283− toEncoding = absurd
1284− {-# INLINE toEncoding #-}
1133+left, right :: Text
1134+left = "Left"
1135+right = "Right"
12851136
12861137
12871138instance ToJSON Bool where
12881139 toJSON = Bool
12891140 {-# INLINE toJSON #-}
12901141
1291− toEncoding = E.bool
1142+ toEncoding = Encoding . EB.bool
12921143 {-# INLINE toEncoding #-}
12931144
1294−instance ToJSONKey Bool where
1295− toJSONKey = toJSONKeyText $ \x -> if x then "true" else "false"
1296−
12971145
12981146instance ToJSON Ordering where
12991147 toJSON = toJSON . orderingToText
@@ -1320,10 +1168,10 @@ instance ToJSON Char where
13201168 toJSONList = String . T.pack
13211169 {-# INLINE toJSONList #-}
13221170
1323− toEncoding = E.string . (:[])
1171+ toEncoding = Encoding . EB.string . (:[])
13241172 {-# INLINE toEncoding #-}
13251173
1326− toEncodingList = E.string
1174+ toEncodingList = Encoding . EB.string
13271175 {-# INLINE toEncodingList #-}
13281176
13291177
@@ -1331,13 +1179,9 @@ instance ToJSON Double where
13311179 toJSON = realFloatToJSON
13321180 {-# INLINE toJSON #-}
13331181
1334− toEncoding = E.double
1182+ toEncoding = realFloatToEncoding
13351183 {-# INLINE toEncoding #-}
13361184
1337−instance ToJSONKey Double where
1338− toJSONKey = toJSONKeyTextEnc E.doubleText
1339− {-# INLINE toJSONKey #-}
1340−
13411185
13421186instance ToJSON Number where
13431187 toJSON (D d) = toJSON d
@@ -1353,23 +1197,20 @@ instance ToJSON Float where
13531197 toJSON = realFloatToJSON
13541198 {-# INLINE toJSON #-}
13551199
1356− toEncoding = E.float
1200+ toEncoding = realFloatToEncoding
13571201 {-# INLINE toEncoding #-}
13581202
1359−instance ToJSONKey Float where
1360− toJSONKey = toJSONKeyTextEnc E.floatText
1361− {-# INLINE toJSONKey #-}
1362−
13631203
1364−instance (ToJSON a, Integral a) => ToJSON (Ratio a) where
1204+instance ToJSON (Ratio Integer) where
13651205 toJSON r = object [ "numerator" .= numerator r
13661206 , "denominator" .= denominator r
13671207 ]
13681208 {-# INLINE toJSON #-}
13691209
1370− toEncoding r = E.pairs $
1371− "numerator" .= numerator r <>
1372− "denominator" .= denominator r
1210+ toEncoding r = Encoding $
1211+ B.shortByteString "{\"numerator\":" <> builder (numerator r) <>
1212+ B.shortByteString ",\"denominator\":" <> builder (denominator r) <>
1213+ B.char7 '}'
13731214 {-# INLINE toEncoding #-}
13741215
13751216
@@ -1377,37 +1218,24 @@ instance HasResolution a => ToJSON (Fixed a) where
13771218 toJSON = Number . realToFrac
13781219 {-# INLINE toJSON #-}
13791220
1380− toEncoding = E.scientific . realToFrac
1221+ toEncoding = Encoding . EB.number . realToFrac
13811222 {-# INLINE toEncoding #-}
13821223
1383−instance HasResolution a => ToJSONKey (Fixed a) where
1384− toJSONKey = toJSONKeyTextEnc (E.scientificText . realToFrac)
1385− {-# INLINE toJSONKey #-}
1386−
13871224
13881225instance ToJSON Int where
13891226 toJSON = Number . fromIntegral
13901227 {-# INLINE toJSON #-}
13911228
1392− toEncoding = E.int
1229+ toEncoding = Encoding . B.intDec
13931230 {-# INLINE toEncoding #-}
13941231
1395−instance ToJSONKey Int where
1396− toJSONKey = toJSONKeyTextEnc E.intText
1397− {-# INLINE toJSONKey #-}
1398−
1399−
14001232instance ToJSON Integer where
14011233 toJSON = Number . fromInteger
14021234 {-# INLINE toJSON #-}
14031235
1404− toEncoding = E.integer
1236+ toEncoding = Encoding . B.integerDec
14051237 {-# INLINE toEncoding #-}
14061238
1407−instance ToJSONKey Integer where
1408− toJSONKey = toJSONKeyTextEnc E.integerText
1409− {-# INLINE toJSONKey #-}
1410−
14111239
14121240instance ToJSON Natural where
14131241 toJSON = toJSON . toInteger
@@ -1416,147 +1244,93 @@ instance ToJSON Natural where
14161244 toEncoding = toEncoding . toInteger
14171245 {-# INLINE toEncoding #-}
14181246
1419−instance ToJSONKey Natural where
1420− toJSONKey = toJSONKeyTextEnc (E.integerText . toInteger)
1421− {-# INLINE toJSONKey #-}
1422−
14231247
14241248instance ToJSON Int8 where
14251249 toJSON = Number . fromIntegral
14261250 {-# INLINE toJSON #-}
14271251
1428− toEncoding = E.int8
1252+ toEncoding = Encoding . B.int8Dec
14291253 {-# INLINE toEncoding #-}
14301254
1431−instance ToJSONKey Int8 where
1432− toJSONKey = toJSONKeyTextEnc E.int8Text
1433− {-# INLINE toJSONKey #-}
1434−
14351255
14361256instance ToJSON Int16 where
14371257 toJSON = Number . fromIntegral
14381258 {-# INLINE toJSON #-}
14391259
1440− toEncoding = E.int16
1260+ toEncoding = Encoding . B.int16Dec
14411261 {-# INLINE toEncoding #-}
14421262
1443−instance ToJSONKey Int16 where
1444− toJSONKey = toJSONKeyTextEnc E.int16Text
1445− {-# INLINE toJSONKey #-}
1446−
14471263
14481264instance ToJSON Int32 where
14491265 toJSON = Number . fromIntegral
14501266 {-# INLINE toJSON #-}
14511267
1452− toEncoding = E.int32
1268+ toEncoding = Encoding . B.int32Dec
14531269 {-# INLINE toEncoding #-}
14541270
1455−instance ToJSONKey Int32 where
1456− toJSONKey = toJSONKeyTextEnc E.int32Text
1457− {-# INLINE toJSONKey #-}
1458−
14591271
14601272instance ToJSON Int64 where
14611273 toJSON = Number . fromIntegral
14621274 {-# INLINE toJSON #-}
14631275
1464− toEncoding = E.int64
1276+ toEncoding = Encoding . B.int64Dec
14651277 {-# INLINE toEncoding #-}
14661278
1467−instance ToJSONKey Int64 where
1468− toJSONKey = toJSONKeyTextEnc E.int64Text
1469− {-# INLINE toJSONKey #-}
14701279
14711280instance ToJSON Word where
14721281 toJSON = Number . fromIntegral
14731282 {-# INLINE toJSON #-}
14741283
1475− toEncoding = E.word
1284+ toEncoding = Encoding . B.wordDec
14761285 {-# INLINE toEncoding #-}
14771286
1478−instance ToJSONKey Word where
1479− toJSONKey = toJSONKeyTextEnc E.wordText
1480− {-# INLINE toJSONKey #-}
1481−
14821287
14831288instance ToJSON Word8 where
14841289 toJSON = Number . fromIntegral
14851290 {-# INLINE toJSON #-}
14861291
1487− toEncoding = E.word8
1292+ toEncoding = Encoding . B.word8Dec
14881293 {-# INLINE toEncoding #-}
14891294
1490−instance ToJSONKey Word8 where
1491− toJSONKey = toJSONKeyTextEnc E.word8Text
1492− {-# INLINE toJSONKey #-}
1493−
14941295
14951296instance ToJSON Word16 where
14961297 toJSON = Number . fromIntegral
14971298 {-# INLINE toJSON #-}
14981299
1499− toEncoding = E.word16
1300+ toEncoding = Encoding . B.word16Dec
15001301 {-# INLINE toEncoding #-}
15011302
1502−instance ToJSONKey Word16 where
1503− toJSONKey = toJSONKeyTextEnc E.word16Text
1504− {-# INLINE toJSONKey #-}
1505−
15061303
15071304instance ToJSON Word32 where
15081305 toJSON = Number . fromIntegral
15091306 {-# INLINE toJSON #-}
15101307
1511− toEncoding = E.word32
1308+ toEncoding = Encoding . B.word32Dec
15121309 {-# INLINE toEncoding #-}
15131310
1514−instance ToJSONKey Word32 where
1515− toJSONKey = toJSONKeyTextEnc E.word32Text
1516− {-# INLINE toJSONKey #-}
1517−
1518−
15191311instance ToJSON Word64 where
15201312 toJSON = Number . fromIntegral
15211313 {-# INLINE toJSON #-}
15221314
1523− toEncoding = E.word64
1524− {-# INLINE toEncoding #-}
1525−
1526−instance ToJSONKey Word64 where
1527− toJSONKey = toJSONKeyTextEnc E.word64Text
1528− {-# INLINE toJSONKey #-}
1529−
1530−instance ToJSON CTime where
1531− toJSON (CTime i) = toJSON i
1532− {-# INLINE toJSON #-}
1533−
1534− toEncoding (CTime i) = toEncoding i
1315+ toEncoding = Encoding . B.word64Dec
15351316 {-# INLINE toEncoding #-}
15361317
15371318instance ToJSON Text where
15381319 toJSON = String
15391320 {-# INLINE toJSON #-}
15401321
1541− toEncoding = E.text
1322+ toEncoding = Encoding . EB.text
15421323 {-# INLINE toEncoding #-}
15431324
1544−instance ToJSONKey Text where
1545− toJSONKey = toJSONKeyText id
1546− {-# INLINE toJSONKey #-}
1547−
1548−
15491325instance ToJSON LT.Text where
15501326 toJSON = String . LT.toStrict
15511327 {-# INLINE toJSON #-}
15521328
1553− toEncoding = E.lazyText
1329+ toEncoding t = Encoding $
1330+ B.char7 '"' <>
1331+ LT.foldrChunks (\x xs -> EB.unquoted x <> xs) (B.char7 '"') t
15541332 {-# INLINE toEncoding #-}
15551333
1556−instance ToJSONKey LT.Text where
1557− toJSONKey = toJSONKeyText LT.toStrict
1558−
1559−
15601334instance ToJSON Version where
15611335 toJSON = toJSON . showVersion
15621336 {-# INLINE toJSON #-}
@@ -1564,8 +1338,6 @@ instance ToJSON Version where
15641338 toEncoding = toEncoding . showVersion
15651339 {-# INLINE toEncoding #-}
15661340
1567−instance ToJSONKey Version where
1568− toJSONKey = toJSONKeyText (T.pack . showVersion)
15691341
15701342-------------------------------------------------------------------------------
15711343-- semigroups NonEmpty
@@ -1593,12 +1365,9 @@ instance ToJSON Scientific where
15931365 toJSON = Number
15941366 {-# INLINE toJSON #-}
15951367
1596− toEncoding = E.scientific
1368+ toEncoding = Encoding . EB.number
15971369 {-# INLINE toEncoding #-}
15981370
1599−instance ToJSONKey Scientific where
1600− toJSONKey = toJSONKeyTextEnc E.scientificText
1601−
16021371-------------------------------------------------------------------------------
16031372-- DList
16041373-------------------------------------------------------------------------------
@@ -1617,116 +1386,6 @@ instance (ToJSON a) => ToJSON (DList.DList a) where
16171386 toEncoding = toEncoding1
16181387 {-# INLINE toEncoding #-}
16191388
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−
17301389-------------------------------------------------------------------------------
17311390-- containers
17321391-------------------------------------------------------------------------------
@@ -1792,15 +1451,17 @@ instance ToJSON a => ToJSON (IntMap.IntMap a) where
17921451
17931452instance ToJSONKey k => ToJSON1 (M.Map k) where
17941453 liftToJSON g _ = case toJSONKey of
1795− ToJSONKeyText f _ -> Object . mapHashKeyVal f g
1796− ToJSONKeyValue f _ -> Array . V.fromList . map (toJSONPair f g) . M.toList
1454+ ToJSONKeyText (f,_) -> Object . mapHashKeyVal f g
1455+ ToJSONKeyValue (f,_) -> Array . V.fromList . map (toJSONPair f g) . M.toList
17971456 {-# INLINE liftToJSON #-}
17981457
1458+ -- liftToEncoding :: forall a. (a -> Encoding) -> ([a] -> Encoding) -> M.Map k a -> Encoding
17991459 liftToEncoding g _ = case toJSONKey of
1800− ToJSONKeyText _ f -> dict f g M.foldrWithKey
1801− ToJSONKeyValue _ f -> listEncoding (pairEncoding f) . M.toList
1460+ ToJSONKeyText (_,f) -> dict f g M.foldrWithKey
1461+ ToJSONKeyValue (_,f) -> listEncoding (pairEncoding f) . M.toList
18021462 where
1803− pairEncoding f (a, b) = E.list id [f a, g b]
1463+ -- pairEncoding :: (k -> Encoding) -> (k, a) -> Encoding
1464+ pairEncoding f (a, b) = tuple $ f a >*< g b
18041465 {-# INLINE liftToEncoding #-}
18051466
18061467
@@ -1838,17 +1499,6 @@ instance (ToJSON v) => ToJSON (Tree.Tree v) where
18381499 toEncoding = toEncoding1
18391500 {-# INLINE toEncoding #-}
18401501
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
18521502
18531503-------------------------------------------------------------------------------
18541504-- vector
@@ -1858,20 +1508,29 @@ instance ToJSON1 Vector where
18581508 liftToJSON t _ = Array . V.map t
18591509 {-# INLINE liftToJSON #-}
18601510
1861− liftToEncoding t _ = listEncoding t . V.toList
1511+ liftToEncoding t _ xs
1512+ | V.null xs = emptyArray_
1513+ | otherwise = Encoding $
1514+ B.char7 '[' <> fromEncoding (t (V.unsafeHead xs)) <>
1515+ V.foldr go (B.char7 ']') (V.unsafeTail xs)
1516+ where
1517+ go v b = B.char7 ',' <> fromEncoding (t v) <> b
18621518 {-# INLINE liftToEncoding #-}
18631519
18641520instance (ToJSON a) => ToJSON (Vector a) where
1865− {-# SPECIALIZE instance ToJSON Array #-}
1866−
1867− toJSON = toJSON1
1521+ toJSON = Array . V.map toJSON
18681522 {-# INLINE toJSON #-}
18691523
1870− toEncoding = toEncoding1
1524+ toEncoding = encodeVector
18711525 {-# INLINE toEncoding #-}
18721526
18731527encodeVector :: (ToJSON a, VG.Vector v a) => v a -> Encoding
1874−encodeVector = listEncoding toEncoding . VG.toList
1528+encodeVector xs
1529+ | VG.null xs = emptyArray_
1530+ | otherwise = Encoding $
1531+ B.char7 '[' <> builder (VG.unsafeHead xs) <>
1532+ VG.foldr go (B.char7 ']') (VG.unsafeTail xs)
1533+ where go v b = B.char7 ',' <> builder v <> b
18751534{-# INLINE encodeVector #-}
18761535
18771536vectorToJSON :: (VG.Vector v a, ToJSON a) => v a -> Value
@@ -1922,21 +1581,20 @@ instance (ToJSON a) => ToJSON (HashSet.HashSet a) where
19221581
19231582instance ToJSONKey k => ToJSON1 (H.HashMap k) where
19241583 liftToJSON g _ = case toJSONKey of
1925− ToJSONKeyText f _ -> Object . mapKeyVal f g
1926− ToJSONKeyValue f _ -> Array . V.fromList . map (toJSONPair f g) . H.toList
1584+ ToJSONKeyText (f,_) -> Object . mapKeyVal f g
1585+ ToJSONKeyValue (f,_) -> Array . V.fromList . map (toJSONPair f g) . H.toList
19271586 {-# INLINE liftToJSON #-}
19281587
19291588 -- liftToEncoding :: forall a. (a -> Encoding) -> ([a] -> Encoding) -> H.HashMap k a -> Encoding
19301589 liftToEncoding g _ = case toJSONKey of
1931− ToJSONKeyText _ f -> dict f g H.foldrWithKey
1932− ToJSONKeyValue _ f -> listEncoding (pairEncoding f) . H.toList
1590+ ToJSONKeyText (_,f) -> dict f g H.foldrWithKey
1591+ ToJSONKeyValue (_,f) -> listEncoding (pairEncoding f) . H.toList
19331592 where
1934− pairEncoding f (a, b) = E.list id [f a, g b]
1593+ -- pairEncoding :: (k -> Encoding) -> (k, a) -> Encoding
1594+ pairEncoding f (a, b) = tuple $ f a >*< g b
19351595 {-# INLINE liftToEncoding #-}
19361596
19371597instance (ToJSON v, ToJSONKey k) => ToJSON (H.HashMap k v) where
1938− {-# SPECIALIZE instance ToJSON Object #-}
1939−
19401598 toJSON = toJSON1
19411599 {-# INLINE toJSON #-}
19421600
@@ -1951,7 +1609,7 @@ instance ToJSON Value where
19511609 toJSON a = a
19521610 {-# INLINE toJSON #-}
19531611
1954− toEncoding = E.value
1612+ toEncoding = Encoding . EB.encodeToBuilder
19551613 {-# INLINE toEncoding #-}
19561614
19571615instance ToJSON DotNetTime where
@@ -1963,189 +1621,69 @@ dotNetTime :: DotNetTime -> String
19631621dotNetTime (DotNetTime t) = secs ++ formatMillis t ++ ")/"
19641622 where secs = formatTime defaultTimeLocale "/Date(%s" t
19651623
1966−formatMillis :: (FormatTime t) => t -> String
1967−formatMillis = take 3 . formatTime defaultTimeLocale "%q"
1968−
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−
19951624-------------------------------------------------------------------------------
19961625-- time
19971626-------------------------------------------------------------------------------
19981627
19991628instance ToJSON Day where
2000− toJSON = stringEncoding . E.day
2001− toEncoding = E.day
2002−
2003−instance ToJSONKey Day where
2004− toJSONKey = toJSONKeyTextEnc E.day
1629+ toJSON = stringEncoding
1630+ toEncoding z = Encoding (EB.quote $ EB.day z)
20051631
20061632
20071633instance ToJSON TimeOfDay where
2008− toJSON = stringEncoding . E.timeOfDay
2009− toEncoding = E.timeOfDay
2010−
2011−instance ToJSONKey TimeOfDay where
2012− toJSONKey = toJSONKeyTextEnc E.timeOfDay
1634+ toJSON = stringEncoding
1635+ toEncoding z = Encoding (EB.quote $ EB.timeOfDay z)
20131636
20141637
20151638instance ToJSON LocalTime where
2016− toJSON = stringEncoding . E.localTime
2017− toEncoding = E.localTime
2018−
2019−instance ToJSONKey LocalTime where
2020− toJSONKey = toJSONKeyTextEnc E.localTime
2021−
1639+ toJSON = stringEncoding
1640+ toEncoding z = Encoding (EB.quote $ EB.localTime z)
20221641
20231642instance ToJSON ZonedTime where
2024− toJSON = stringEncoding . E.zonedTime
2025− toEncoding = E.zonedTime
1643+ toJSON = stringEncoding
20261644
2027−instance ToJSONKey ZonedTime where
2028− toJSONKey = toJSONKeyTextEnc E.zonedTime
1645+ toEncoding z = Encoding (EB.quote $ EB.zonedTime z)
20291646
1647+formatMillis :: (FormatTime t) => t -> String
1648+formatMillis = take 3 . formatTime defaultTimeLocale "%q"
20301649
20311650instance ToJSON UTCTime where
2032− toJSON = stringEncoding . E.utcTime
2033− toEncoding = E.utcTime
1651+ toJSON = stringEncoding
20341652
2035−instance ToJSONKey UTCTime where
2036− toJSONKey = toJSONKeyTextEnc E.utcTime
1653+ toEncoding t = Encoding (EB.quote $ EB.utcTime t)
20371654
20381655-- | Encode something t a JSON string.
2039−stringEncoding :: Encoding' Text -> Value
1656+--
1657+-- TODO: remove me, this is a hack
1658+stringEncoding :: (ToJSON a) => a -> Value
20401659stringEncoding = String
20411660 . T.dropAround (== '"')
20421661 . T.decodeLatin1
20431662 . L.toStrict
2044− . E.encodingToLazyByteString
1663+ . B.toLazyByteString
1664+ . fromEncoding
1665+ . toEncoding
20451666{-# INLINE stringEncoding #-}
20461667
2047−
20481668instance ToJSON NominalDiffTime where
20491669 toJSON = Number . realToFrac
20501670 {-# INLINE toJSON #-}
20511671
2052− toEncoding = E.scientific . realToFrac
1672+ toEncoding = Encoding . EB.number . realToFrac
20531673 {-# INLINE toEncoding #-}
20541674
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−
21071675-------------------------------------------------------------------------------
21081676-- base Monoid/Semigroup
21091677-------------------------------------------------------------------------------
21101678
2111−instance ToJSON1 Monoid.Dual where
2112− liftToJSON t _ = t . Monoid.getDual
2113− {-# INLINE liftToJSON #-}
2114−
2115− liftToEncoding t _ = t . Monoid.getDual
2116− {-# INLINE liftToEncoding #-}
2117−
2118−instance ToJSON a => ToJSON (Monoid.Dual a) where
2119− toJSON = toJSON1
2120− {-# INLINE toJSON #-}
2121−
2122− toEncoding = toEncoding1
2123− {-# INLINE toEncoding #-}
2124−
2125−
2126−instance ToJSON1 Monoid.First where
2127− liftToJSON t to' = liftToJSON t to' . Monoid.getFirst
2128− {-# INLINE liftToJSON #-}
2129−
2130− liftToEncoding t to' = liftToEncoding t to' . Monoid.getFirst
2131− {-# INLINE liftToEncoding #-}
2132−
2133−instance ToJSON a => ToJSON (Monoid.First a) where
2134− toJSON = toJSON1
2135− {-# INLINE toJSON #-}
2136−
2137− toEncoding = toEncoding1
2138− {-# INLINE toEncoding #-}
2139−
2140−
2141−instance ToJSON1 Monoid.Last where
2142− liftToJSON t to' = liftToJSON t to' . Monoid.getLast
1679+instance ToJSON1 Dual where
1680+ liftToJSON t _ = t . getDual
21431681 {-# INLINE liftToJSON #-}
21441682
2145− liftToEncoding t to' = liftToEncoding t to' . Monoid.getLast
1683+ liftToEncoding t _ = t . getDual
21461684 {-# INLINE liftToEncoding #-}
21471685
2148−instance ToJSON a => ToJSON (Monoid.Last a) where
1686+instance ToJSON a => ToJSON (Dual a) where
21491687 toJSON = toJSON1
21501688 {-# INLINE toJSON #-}
21511689
@@ -2153,14 +1691,14 @@ instance ToJSON a => ToJSON (Monoid.Last a) where
21531691 {-# INLINE toEncoding #-}
21541692
21551693
2156−instance ToJSON1 Semigroup.Min where
2157− liftToJSON t _ (Semigroup.Min x) = t x
1694+instance ToJSON1 First where
1695+ liftToJSON t to' = liftToJSON t to' . getFirst
21581696 {-# INLINE liftToJSON #-}
21591697
2160− liftToEncoding t _ (Semigroup.Min x) = t x
1698+ liftToEncoding t to' = liftToEncoding t to' . getFirst
21611699 {-# INLINE liftToEncoding #-}
21621700
2163−instance ToJSON a => ToJSON (Semigroup.Min a) where
1701+instance ToJSON a => ToJSON (First a) where
21641702 toJSON = toJSON1
21651703 {-# INLINE toJSON #-}
21661704
@@ -2168,73 +1706,14 @@ instance ToJSON a => ToJSON (Semigroup.Min a) where
21681706 {-# INLINE toEncoding #-}
21691707
21701708
2171−instance ToJSON1 Semigroup.Max where
2172− liftToJSON t _ (Semigroup.Max x) = t x
1709+instance ToJSON1 Last where
1710+ liftToJSON t to' = liftToJSON t to' . getLast
21731711 {-# INLINE liftToJSON #-}
21741712
2175− liftToEncoding t _ (Semigroup.Max x) = t x
1713+ liftToEncoding t to' = liftToEncoding t to' . getLast
21761714 {-# INLINE liftToEncoding #-}
21771715
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
1716+instance ToJSON a => ToJSON (Last a) where
22381717 toJSON = toJSON1
22391718 {-# INLINE toJSON #-}
22401719
@@ -2245,28 +1724,14 @@ instance ToJSON a => ToJSON (Semigroup.Option a) where
22451724-- tagged
22461725-------------------------------------------------------------------------------
22471726
2248−instance ToJSON1 Proxy where
2249− liftToJSON _ _ _ = Null
2250− {-# INLINE liftToJSON #-}
2251−
2252− liftToEncoding _ _ _ = E.null_
2253− {-# INLINE liftToEncoding #-}
2254−
22551727instance ToJSON (Proxy a) where
22561728 toJSON _ = Null
22571729 {-# INLINE toJSON #-}
22581730
2259− toEncoding _ = E.null_
1731+ toEncoding _ = Encoding EB.null_
22601732 {-# INLINE toEncoding #-}
22611733
22621734
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−
22701735instance ToJSON1 (Tagged a) where
22711736 liftToJSON t _ (Tagged x) = t x
22721737 {-# INLINE liftToJSON #-}
@@ -2281,6 +1746,7 @@ instance ToJSON b => ToJSON (Tagged a b) where
22811746 toEncoding = toEncoding1
22821747 {-# INLINE toEncoding #-}
22831748
1749+
22841750instance ToJSONKey b => ToJSONKey (Tagged a b) where
22851751 toJSONKey = contramapToJSONKeyFunction unTagged toJSONKey
22861752 toJSONKeyList = contramapToJSONKeyFunction (fmap unTagged) toJSONKeyList
@@ -2289,22 +1755,41 @@ instance ToJSONKey b => ToJSONKey (Tagged a b) where
22891755-- Instances for converting t map keys
22901756-------------------------------------------------------------------------------
22911757
1758+instance ToJSONKey Text where
1759+ toJSONKey = ToJSONKeyText (id,toEncoding)
1760+
1761+
1762+instance ToJSONKey Bool where
1763+ toJSONKey = ToJSONKeyText
1764+ ( (\x -> if x then "true" else "false")
1765+ , (\x -> Encoding $ if x then "\"true\"" else "\"false\"")
1766+ )
1767+
1768+instance ToJSONKey Int where
1769+ toJSONKey = ToJSONKeyText
1770+ ( LT.toStrict . LTB.toLazyText . LTBI.decimal
1771+ , \x -> Encoding $ B.char7 '"' <> fromEncoding (toEncoding x) <> B.char7 '"'
1772+ )
1773+
22921774instance (ToJSON a, ToJSON b) => ToJSONKey (a,b)
22931775instance (ToJSON a, ToJSON b, ToJSON c) => ToJSONKey (a,b,c)
22941776instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSONKey (a,b,c,d)
22951777
22961778instance ToJSONKey Char where
2297− toJSONKey = ToJSONKeyText T.singleton (E.string . (:[]))
2298− toJSONKeyList = toJSONKeyText T.pack
1779+ toJSONKey = ToJSONKeyText (T.singleton, toEncoding)
1780+ toJSONKeyList = ToJSONKeyText (T.pack, toEncoding . T.pack)
22991781
23001782instance (ToJSONKey a, ToJSON a) => ToJSONKey [a] where
23011783 toJSONKey = toJSONKeyList
23021784
1785+instance (ToJSONKey a, ToJSON a) => ToJSONKey (Identity a) where
1786+ toJSONKey = contramapToJSONKeyFunction runIdentity toJSONKey
1787+
23031788-------------------------------------------------------------------------------
2304−-- Tuple instances
1789+-- Tuple instances, see tuple-instances-to.hs
23051790-------------------------------------------------------------------------------
23061791
2307−instance ToJSON2 (,) where
1792+instance ToJSON2 ((,) ) where
23081793 liftToJSON2 toA _ toB _ (a, b) = Array $ V.create $ do
23091794 mv <- VM.unsafeNew 2
23101795 VM.unsafeWrite mv 0 (toA a)
@@ -2312,7 +1797,9 @@ instance ToJSON2 (,) where
23121797 return mv
23131798 {-# INLINE liftToJSON2 #-}
23141799
2315− liftToEncoding2 toA _ toB _ (a, b) = E.list id [toA a, toB b]
1800+ liftToEncoding2 toA _ toB _ (a, b) = tuple $
1801+ toA a >*<
1802+ toB b
23161803 {-# INLINE liftToEncoding2 #-}
23171804
23181805instance (ToJSON a) => ToJSON1 ((,) a) where
@@ -2336,11 +1823,10 @@ instance (ToJSON a) => ToJSON2 ((,,) a) where
23361823 return mv
23371824 {-# INLINE liftToJSON2 #-}
23381825
2339− liftToEncoding2 toB _ toC _ (a, b, c) = E.list id
2340− [ toEncoding a
2341− , toB b
2342− , toC c
2343− ]
1826+ liftToEncoding2 toB _ toC _ (a, b, c) = tuple $
1827+ toEncoding a >*<
1828+ toB b >*<
1829+ toC c
23441830 {-# INLINE liftToEncoding2 #-}
23451831
23461832instance (ToJSON a, ToJSON b) => ToJSON1 ((,,) a b) where
@@ -2365,12 +1851,11 @@ instance (ToJSON a, ToJSON b) => ToJSON2 ((,,,) a b) where
23651851 return mv
23661852 {-# INLINE liftToJSON2 #-}
23671853
2368− liftToEncoding2 toC _ toD _ (a, b, c, d) = E.list id
2369− [ toEncoding a
2370− , toEncoding b
2371− , toC c
2372− , toD d
2373− ]
1854+ liftToEncoding2 toC _ toD _ (a, b, c, d) = tuple $
1855+ toEncoding a >*<
1856+ toEncoding b >*<
1857+ toC c >*<
1858+ toD d
23741859 {-# INLINE liftToEncoding2 #-}
23751860
23761861instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON1 ((,,,) a b c) where
@@ -2396,13 +1881,12 @@ instance (ToJSON a, ToJSON b, ToJSON c) => ToJSON2 ((,,,,) a b c) where
23961881 return mv
23971882 {-# INLINE liftToJSON2 #-}
23981883
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− ]
1884+ liftToEncoding2 toD _ toE _ (a, b, c, d, e) = tuple $
1885+ toEncoding a >*<
1886+ toEncoding b >*<
1887+ toEncoding c >*<
1888+ toD d >*<
1889+ toE e
24061890 {-# INLINE liftToEncoding2 #-}
24071891
24081892instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON1 ((,,,,) a b c d) where
@@ -2429,14 +1913,13 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d) => ToJSON2 ((,,,,,) a b c d) w
24291913 return mv
24301914 {-# INLINE liftToJSON2 #-}
24311915
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− ]
1916+ liftToEncoding2 toE _ toF _ (a, b, c, d, e, f) = tuple $
1917+ toEncoding a >*<
1918+ toEncoding b >*<
1919+ toEncoding c >*<
1920+ toEncoding d >*<
1921+ toE e >*<
1922+ toF f
24401923 {-# INLINE liftToEncoding2 #-}
24411924
24421925instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON1 ((,,,,,) a b c d e) where
@@ -2464,15 +1947,14 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e) => ToJSON2 ((,,,,,,)
24641947 return mv
24651948 {-# INLINE liftToJSON2 #-}
24661949
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− ]
1950+ liftToEncoding2 toF _ toG _ (a, b, c, d, e, f, g) = tuple $
1951+ toEncoding a >*<
1952+ toEncoding b >*<
1953+ toEncoding c >*<
1954+ toEncoding d >*<
1955+ toEncoding e >*<
1956+ toF f >*<
1957+ toG g
24761958 {-# INLINE liftToEncoding2 #-}
24771959
24781960instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON1 ((,,,,,,) a b c d e f) where
@@ -2501,16 +1983,15 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f) => ToJSON2
25011983 return mv
25021984 {-# INLINE liftToJSON2 #-}
25031985
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− ]
1986+ liftToEncoding2 toG _ toH _ (a, b, c, d, e, f, g, h) = tuple $
1987+ toEncoding a >*<
1988+ toEncoding b >*<
1989+ toEncoding c >*<
1990+ toEncoding d >*<
1991+ toEncoding e >*<
1992+ toEncoding f >*<
1993+ toG g >*<
1994+ toH h
25141995 {-# INLINE liftToEncoding2 #-}
25151996
25161997instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g) => ToJSON1 ((,,,,,,,) a b c d e f g) where
@@ -2540,17 +2021,16 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g)
25402021 return mv
25412022 {-# INLINE liftToJSON2 #-}
25422023
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− ]
2024+ liftToEncoding2 toH _ toI _ (a, b, c, d, e, f, g, h, i) = tuple $
2025+ toEncoding a >*<
2026+ toEncoding b >*<
2027+ toEncoding c >*<
2028+ toEncoding d >*<
2029+ toEncoding e >*<
2030+ toEncoding f >*<
2031+ toEncoding g >*<
2032+ toH h >*<
2033+ toI i
25542034 {-# INLINE liftToEncoding2 #-}
25552035
25562036instance (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
@@ -2581,18 +2061,17 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
25812061 return mv
25822062 {-# INLINE liftToJSON2 #-}
25832063
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− ]
2064+ liftToEncoding2 toI _ toJ _ (a, b, c, d, e, f, g, h, i, j) = tuple $
2065+ toEncoding a >*<
2066+ toEncoding b >*<
2067+ toEncoding c >*<
2068+ toEncoding d >*<
2069+ toEncoding e >*<
2070+ toEncoding f >*<
2071+ toEncoding g >*<
2072+ toEncoding h >*<
2073+ toI i >*<
2074+ toJ j
25962075 {-# INLINE liftToEncoding2 #-}
25972076
25982077instance (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
@@ -2624,19 +2103,18 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
26242103 return mv
26252104 {-# INLINE liftToJSON2 #-}
26262105
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− ]
2106+ liftToEncoding2 toJ _ toK _ (a, b, c, d, e, f, g, h, i, j, k) = tuple $
2107+ toEncoding a >*<
2108+ toEncoding b >*<
2109+ toEncoding c >*<
2110+ toEncoding d >*<
2111+ toEncoding e >*<
2112+ toEncoding f >*<
2113+ toEncoding g >*<
2114+ toEncoding h >*<
2115+ toEncoding i >*<
2116+ toJ j >*<
2117+ toK k
26402118 {-# INLINE liftToEncoding2 #-}
26412119
26422120instance (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
@@ -2669,20 +2147,19 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
26692147 return mv
26702148 {-# INLINE liftToJSON2 #-}
26712149
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− ]
2150+ liftToEncoding2 toK _ toL _ (a, b, c, d, e, f, g, h, i, j, k, l) = tuple $
2151+ toEncoding a >*<
2152+ toEncoding b >*<
2153+ toEncoding c >*<
2154+ toEncoding d >*<
2155+ toEncoding e >*<
2156+ toEncoding f >*<
2157+ toEncoding g >*<
2158+ toEncoding h >*<
2159+ toEncoding i >*<
2160+ toEncoding j >*<
2161+ toK k >*<
2162+ toL l
26862163 {-# INLINE liftToEncoding2 #-}
26872164
26882165instance (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
@@ -2716,21 +2193,20 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
27162193 return mv
27172194 {-# INLINE liftToJSON2 #-}
27182195
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− ]
2196+ liftToEncoding2 toL _ toM _ (a, b, c, d, e, f, g, h, i, j, k, l, m) = tuple $
2197+ toEncoding a >*<
2198+ toEncoding b >*<
2199+ toEncoding c >*<
2200+ toEncoding d >*<
2201+ toEncoding e >*<
2202+ toEncoding f >*<
2203+ toEncoding g >*<
2204+ toEncoding h >*<
2205+ toEncoding i >*<
2206+ toEncoding j >*<
2207+ toEncoding k >*<
2208+ toL l >*<
2209+ toM m
27342210 {-# INLINE liftToEncoding2 #-}
27352211
27362212instance (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
@@ -2765,22 +2241,21 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
27652241 return mv
27662242 {-# INLINE liftToJSON2 #-}
27672243
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− ]
2244+ liftToEncoding2 toM _ toN _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n) = tuple $
2245+ toEncoding a >*<
2246+ toEncoding b >*<
2247+ toEncoding c >*<
2248+ toEncoding d >*<
2249+ toEncoding e >*<
2250+ toEncoding f >*<
2251+ toEncoding g >*<
2252+ toEncoding h >*<
2253+ toEncoding i >*<
2254+ toEncoding j >*<
2255+ toEncoding k >*<
2256+ toEncoding l >*<
2257+ toM m >*<
2258+ toN n
27842259 {-# INLINE liftToEncoding2 #-}
27852260
27862261instance (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
@@ -2816,23 +2291,22 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
28162291 return mv
28172292 {-# INLINE liftToJSON2 #-}
28182293
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− ]
2294+ liftToEncoding2 toN _ toO _ (a, b, c, d, e, f, g, h, i, j, k, l, m, n, o) = tuple $
2295+ toEncoding a >*<
2296+ toEncoding b >*<
2297+ toEncoding c >*<
2298+ toEncoding d >*<
2299+ toEncoding e >*<
2300+ toEncoding f >*<
2301+ toEncoding g >*<
2302+ toEncoding h >*<
2303+ toEncoding i >*<
2304+ toEncoding j >*<
2305+ toEncoding k >*<
2306+ toEncoding l >*<
2307+ toEncoding m >*<
2308+ toN n >*<
2309+ toO o
28362310 {-# INLINE liftToEncoding2 #-}
28372311
28382312instance (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
@@ -2846,27 +2320,3 @@ instance (ToJSON a, ToJSON b, ToJSON c, ToJSON d, ToJSON e, ToJSON f, ToJSON g,
28462320 {-# INLINE toJSON #-}
28472321 toEncoding = toEncoding2
28482322 {-# 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