ARSON

A library-companion to register custom data types that can be encoded and decoded for json.lua.

How to use:

Require it as such: local arson = require("arson")

or if it is nested in a directory: local arson = require("folder.folder.arson")

You can check the main.lua as an example. It has descriptive comments.

Custom Data/Class Prerequisite

Your class or object must have the public field type. This will be used by Arson to determine whether a table stored in the data is to be encoded/decoded

Example:

local my_custom_class = {
	text = "Hello, World!",
	type = "my_custom_class" --IMPORTANT
}

API

• Arson.register - register your own custom data/class that can be encoded and decoded

Example:

--(type_name : string, on_encode : function, on_decode : function)
--returns nothing

arson.register("custom_vec2_class",
	function(data)
		return { x = data.x, y = data.y }
	end,
	function(data)
		return my_custom_vec2_class:new(data.x, data.y)
	end)

---

• Arson.unregister - unregister an already added custom data/class

Example:

--(type_name : string)
--returns nothing

arson.unregister("custom_class") --will error
arson.unregister("custom_vec2_class")

---

• Arson.encode - encode a table

Example:

--(t : table)
--returns custom_encoded_table : table

local data = {
	1, 2, 3, custom_vec2_class(1, 1),
	foo = { 4, 5, 6 },
	bar = custom_vec2_class(2, 2),
}
local custom_data = arson.encode(data)

--[[
returned table:
{
1, 2, 3, { x = 1, y = 1, type = "custom_vec2_class" },
foo = { 4, 5, 6 },
bar = { x = 1, y = 1, type = "custom_vec2_class" }
}
--]]

--the custom_data table can now be used with json.lua
local str_json = json.encode(custom_data)

---

• Arson.decode - decode a table. It will modify the table passed as it will replace custom data with the decoded one

Example:

--(t : table)
--returns nothing

--first let us decode the str_json
local json_decoded = json.decode(str_json)

--then finally decode custom data/class
arson.decode(json_decoded)

---

Why Arson?

It is from RSON, which is derived from Register-JSON. I know it does not make any sense. But is sounds cool.

LICENSE

See MIT License file here