Aeson.ValueParser

A parser DSL for the "aeson" model of the JSON tree.

Documentation

data Value a

A JSON Value parser.

Instances

Monad Value

Functor Value

Applicative Value

Alternative Value

MonadPlus Value

run :: Value a -> Value -> Either (Maybe Text) a

Value parsers

object :: Object a -> Value a

array :: Array a -> Value a

nullable :: Value a -> Value (Maybe a)

string :: Value Text

number :: Value Scientific

bool :: Value Bool

fromJSON :: FromJSON a => Value a

Object parsers

data Object a

A JSON Object parser.

Instances

Monad Object

Functor Object

Applicative Object

Alternative Object

MonadPlus Object

field :: Text -> Value a -> Object a

fieldsMap :: Value a -> Object (HashMap Text a)

foldlFields :: (a -> (Text, b) -> a) -> a -> Value b -> Object a

Array parsers

data Array a

A JSON Array parser.

Instances

Monad Array

Functor Array

Applicative Array

Alternative Array

MonadPlus Array

element :: Int -> Value a -> Array a

elementsVector :: Value a -> Array (Vector a)

foldlElements :: (a -> b -> a) -> a -> Value b -> Array a

foldlElements1 :: (a -> a -> a) -> Value a -> Array a

foldrElements :: (b -> a -> a) -> a -> Value b -> Array a