Safe Haskell	None
Language	Haskell2010

Data.Aeson.Encoding

Contents

Encoding
Predicates
Encoding constructors

Description

Functions in this module return well-formed Encoding'. Polymorphic variants, which return Encoding a, return a textual JSON value, so it can be used as both Encoding' Text and Encoding = Encoding' Value.

Synopsis

type Encoding = Encoding' Value
data Encoding' tag
encodingToLazyByteString :: Encoding' a -> ByteString
fromEncoding :: Encoding' tag -> Builder
unsafeToEncoding :: Builder -> Encoding' a
data Series
pairs :: Series -> Encoding
pair :: Text -> Encoding -> Series
pairStr :: String -> Encoding -> Series
pair' :: Encoding' Text -> Encoding -> Series
nullEncoding :: Encoding' a -> Bool
emptyArray_ :: Encoding
emptyObject_ :: Encoding
text :: Text -> Encoding' a
lazyText :: Text -> Encoding' a
string :: String -> Encoding' a
list :: (a -> Encoding) -> [a] -> Encoding
dict :: (k -> Encoding' Text) -> (v -> Encoding) -> (forall a. (k -> v -> a -> a) -> a -> m -> a) -> m -> Encoding
null_ :: Encoding
bool :: Bool -> Encoding
int8 :: Int8 -> Encoding
int16 :: Int16 -> Encoding
int32 :: Int32 -> Encoding
int64 :: Int64 -> Encoding
int :: Int -> Encoding
word8 :: Word8 -> Encoding
word16 :: Word16 -> Encoding
word32 :: Word32 -> Encoding
word64 :: Word64 -> Encoding
word :: Word -> Encoding
integer :: Integer -> Encoding
float :: Float -> Encoding
double :: Double -> Encoding
scientific :: Scientific -> Encoding
int8Text :: Int8 -> Encoding' a
int16Text :: Int16 -> Encoding' a
int32Text :: Int32 -> Encoding' a
int64Text :: Int64 -> Encoding' a
intText :: Int -> Encoding' a
word8Text :: Word8 -> Encoding' a
word16Text :: Word16 -> Encoding' a
word32Text :: Word32 -> Encoding' a
word64Text :: Word64 -> Encoding' a
wordText :: Word -> Encoding' a
integerText :: Integer -> Encoding' a
floatText :: Float -> Encoding' a
doubleText :: Double -> Encoding' a
scientificText :: Scientific -> Encoding' a
day :: Day -> Encoding' a
month :: Month -> Encoding' a
quarter :: Quarter -> Encoding' a
localTime :: LocalTime -> Encoding' a
utcTime :: UTCTime -> Encoding' a
timeOfDay :: TimeOfDay -> Encoding' a
zonedTime :: ZonedTime -> Encoding' a
value :: Value -> Encoding

Encoding

type Encoding = Encoding' Value #

Often used synonym for Encoding'.

data Encoding' tag #

An encoding of a JSON value.

tag represents which kind of JSON the Encoding is encoding to, we reuse Text and Value as tags here.

Instances

Instances details

GToJSON' Encoding arity (U1 :: Type -> Type) #
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding arity a -> U1 a -> Encoding
ToJSON1 f => GToJSON' Encoding One (Rec1 f) #
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding One a -> Rec1 f a -> Encoding
(EncodeProduct arity a, EncodeProduct arity b) => GToJSON' Encoding arity (a :*: b) #
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding arity a0 -> (a :*: b) a0 -> Encoding
ToJSON a => GToJSON' Encoding arity (K1 i a :: Type -> Type) #
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding arity a0 -> K1 i a a0 -> Encoding
(ToJSON1 f, GToJSON' Encoding One g) => GToJSON' Encoding One (f :.: g) #
Instance details Defined in Data.Aeson.Types.ToJSON Methods gToJSON :: Options -> ToArgs Encoding One a -> (f :.: g) a -> Encoding
Eq (Encoding' a) #
Instance details Defined in Data.Aeson.Encoding.Internal Methods (==) :: Encoding' a -> Encoding' a -> Bool # (/=) :: Encoding' a -> Encoding' a -> Bool #
Ord (Encoding' a) #
Instance details Defined in Data.Aeson.Encoding.Internal Methods compare :: Encoding' a -> Encoding' a -> Ordering # (<) :: Encoding' a -> Encoding' a -> Bool # (<=) :: Encoding' a -> Encoding' a -> Bool # (>) :: Encoding' a -> Encoding' a -> Bool # (>=) :: Encoding' a -> Encoding' a -> Bool # max :: Encoding' a -> Encoding' a -> Encoding' a # min :: Encoding' a -> Encoding' a -> Encoding' a #
Show (Encoding' a) #
Instance details Defined in Data.Aeson.Encoding.Internal Methods showsPrec :: Int -> Encoding' a -> ShowS # show :: Encoding' a -> String # showList :: [Encoding' a] -> ShowS #

encodingToLazyByteString :: Encoding' a -> ByteString #

fromEncoding :: Encoding' tag -> Builder #

Acquire the underlying bytestring builder.

unsafeToEncoding :: Builder -> Encoding' a #

Make Encoding from Builder.

Use with care! You have to make sure that the passed Builder is a valid JSON Encoding!

data Series #

A series of values that, when encoded, should be separated by commas. Since 0.11.0.0, the .= operator is overloaded to create either (Text, Value) or Series. You can use Series when encoding directly to a bytestring builder as in the following example:

toEncoding (Person name age) = pairs ("name" .= name <> "age" .= age)

Instances

Instances details

Semigroup Series #
Instance details Defined in Data.Aeson.Encoding.Internal Methods (<>) :: Series -> Series -> Series # sconcat :: NonEmpty Series -> Series # stimes :: Integral b => b -> Series -> Series #
Monoid Series #
Instance details Defined in Data.Aeson.Encoding.Internal Methods mempty :: Series # mappend :: Series -> Series -> Series # mconcat :: [Series] -> Series #
KeyValue Series #
Instance details Defined in Data.Aeson.Types.ToJSON Methods (.=) :: ToJSON v => Text -> v -> Series #

pairs :: Series -> Encoding #

Encode a series of key/value pairs, separated by commas.

pair :: Text -> Encoding -> Series #

pairStr :: String -> Encoding -> Series #

pair' :: Encoding' Text -> Encoding -> Series #

Predicates

nullEncoding :: Encoding' a -> Bool #

Encoding constructors

emptyArray_ :: Encoding #

emptyObject_ :: Encoding #

text :: Text -> Encoding' a #

lazyText :: Text -> Encoding' a #

string :: String -> Encoding' a #

list :: (a -> Encoding) -> [a] -> Encoding #

dict #

Arguments

:: (k -> Encoding' Text)	key encoding
-> (v -> Encoding)	value encoding
-> (forall a. (k -> v -> a -> a) -> a -> m -> a)	`foldrWithKey` - indexed fold
-> m	container
-> Encoding