Z-Data-0.6.0.0: Array, vector and text
Copyright(c) Dong Han 2019
LicenseBSD
Maintainerwinterland1989@gmail.com
Stabilityexperimental
Portabilitynon-portable
Safe HaskellNone
LanguageHaskell2010

Z.Data.JSON.Builder

Description

This module provides builders for JSON Values, a Haskell JSON representation. These builders are designed to comply with rfc8258. Only control characters are escaped, other unicode codepoints are directly written instead of being escaped.

Synopsis

Value Builders

value :: Value -> Builder () Source #

Encode a Value, you can use this function with toValue to get encodeJSON with a small overhead.

object' :: (a -> Builder ()) -> Vector (Text, a) -> Builder () Source #

array' :: (a -> Builder ()) -> Vector a -> Builder () Source #

string :: Text -> Builder () Source #

Escape text into JSON string and add double quotes, escaping rules:

   '\b':  "\b"
   '\f':  "\f"
   '\n':  "\n"
   '\r':  "\r"
   '\t':  "\t"
   '"':  "\""
   '\':  "\\"
   other chars <= 0x1F: "\u00XX"

scientific :: Scientific -> Builder () Source #

This builder try to render integer when (0 <= e < 1024), and scientific notation otherwise.

Builder helpers

kv :: Text -> Builder () -> Builder () Source #

Use : as separator to connect a label(no escape, only add quotes) with field builders.

Don't use chars which need escaped in label.

kv' :: Text -> Builder () -> Builder () Source #

Use : as separator to connect a label(escape the label and add quotes) with field builders.

Re-export Value type

data Value Source #

A JSON value represented as a Haskell value.

The Object's payload is a key-value vector instead of a map, which parsed directly from JSON document. This design choice has following advantages:

  • Allow different strategies handling duplicated keys.
  • Allow different Map type to do further parsing, e.g. FlatMap
  • Roundtrip without touching the original key-value order.
  • Save time if constructing map is not neccessary, e.g. using a linear scan to find a key if only that key is needed.

Instances

Instances details
Eq Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Methods

(==) :: Value -> Value -> Bool #

(/=) :: Value -> Value -> Bool #

Ord Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Methods

compare :: Value -> Value -> Ordering #

(<) :: Value -> Value -> Bool #

(<=) :: Value -> Value -> Bool #

(>) :: Value -> Value -> Bool #

(>=) :: Value -> Value -> Bool #

max :: Value -> Value -> Value #

min :: Value -> Value -> Value #

Show Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Methods

showsPrec :: Int -> Value -> ShowS #

show :: Value -> String #

showList :: [Value] -> ShowS #

Generic Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Associated Types

type Rep Value :: Type -> Type #

Methods

from :: Value -> Rep Value x #

to :: Rep Value x -> Value #

Arbitrary Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Methods

arbitrary :: Gen Value #

shrink :: Value -> [Value] #

NFData Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Methods

rnf :: Value -> () #

Print Value Source # 
Instance details

Defined in Z.Data.JSON.Value

Methods

toUTF8BuilderP :: Int -> Value -> Builder () Source #

JSON Value Source # 
Instance details

Defined in Z.Data.JSON.Base

type Rep Value Source # 
Instance details

Defined in Z.Data.JSON.Value