jiffy/README.md

Jiffy - JSON NIFs for Erlang

A JSON parser as a NIF. This is a complete rewrite of the work I did in EEP0018 that was based on Yajl. This new version is a hand crafted state machine that does its best to be as quick and efficient as possible while not placing any constraints on the parsed JSON.

Usage

Jiffy's API is a drop in replacement for the EEP0018 application. The JSON representation in Erlang is also exactly the same.

Eshell V5.8.2  (abort with ^G)
1> jiffy:decode(<<"{\"foo\": \"bar\"}">>).
{ok,{[{<<"foo">>,<<"bar">>}]}}
2> Doc = {[{foo, [<<"bing">>, 2.3, true]}]}.
{[{foo,[<<"bing">>,2.3,true]}]}
3> jiffy:encode(Doc).
{ok,<<"{\"foo\":[\"bing\",2.2999999999999998224,true]}">>}

Data Format

JSON             ->   Erlang
null             ->   null
true             ->   true
false            ->   false
1                ->   1
1.25             ->   1.25
[]               ->   []
[true, 1.0]      ->   [true, 1.0]
{}               ->   {[]}
{"foo": "bar"}   ->   {[{<<"foo">>, <<"bar">>}]}