JsonLogic.Json

Documentation

data Json

Json is a collection of possible Json values.

Constructors

JsonNull

JsonBool Bool

JsonNumber Double

JsonString String

JsonArray [Json]

JsonObject JsonObject

Instances

Eq Json

Defined in JsonLogic.Json

Methods

(==) :: Json -> Json -> Bool

(/=) :: Json -> Json -> Bool

Read Json

Defined in JsonLogic.Json

Methods

readsPrec :: Int -> ReadS Json

readList :: ReadS [Json]

readPrec :: ReadPrec Json

readListPrec :: ReadPrec [Json]

Show Json

Defined in JsonLogic.Json

Methods

showsPrec :: Int -> Json -> ShowS

show :: Json -> String

showList :: [Json] -> ShowS

type JsonObject = Map String Json

A Json object is a map of string-Json pairs.

type Rule = Json

A rule can be any kind of Json value, but objects and arrays will be evaluated.

type Data = Json

Data can be any kind of Json value.

prettyShow :: Json -> String

A pretty formatted show for the Json, with identation and depth Use putStr so the newline characters will be interpreted in console

>>> putStr $ prettyShow JsonNull
null

>>> putStr $ prettyShow $ JsonNumber 3.0
3.0

>>> prettyShow (JsonArray [JsonNumber 1, JsonNumber 2])
"[\n  1.0,\n  2.0\n]"

>>> putStr $ prettyShow (JsonArray [JsonNumber 1, JsonBool True])
[
  1.0,
  true
]

stringify :: Json -> String

Convert Json to string, used in string operations See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/toString for more information.

isTruthy :: Json -> Bool

Truthy test for Json See https://developer.mozilla.org/en-US/docs/Glossary/Truthy for more information.

isFalsy :: Json -> Bool

The opposite of isTruthy

parseFloat :: Json -> Double

Convert Json to a numeric value, including NaN Same as the Parsefloat function in JS Parsefloat source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/parseFloat NaN source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN