blob: ea2c88ff9e15e267d781a5a5a02caf1c112e914c [file] [log] [blame]
--[[
Licensed according to the included 'LICENSE' document
Author: Thomas Harning Jr <harningt@gmail.com>
]]
local tostring = tostring
local assert = assert
local jsonutil = require("json.util")
local util_merge = require("json.util").merge
local type = type
module("json.encode.others")
-- Shortcut that works
encodeBoolean = tostring
local defaultOptions = {
allowUndefined = true,
null = jsonutil.null,
undefined = jsonutil.undefined
}
default = nil -- Let the buildCapture optimization take place
strict = {
allowUndefined = false
}
function getEncoder(options)
options = options and util_merge({}, defaultOptions, options) or defaultOptions
local function encodeOthers(value, state)
if value == options.null then
return 'null'
elseif value == options.undefined then
assert(options.allowUndefined, "Invalid value: Unsupported 'Undefined' parameter")
return 'undefined'
else
return false
end
end
local function encodeBoolean(value, state)
return value and 'true' or 'false'
end
local nullType = type(options.null)
local undefinedType = options.undefined and type(options.undefined)
-- Make sure that all of the types handled here are handled
local ret = {
boolean = encodeBoolean,
['nil'] = function() return 'null' end,
[nullType] = encodeOthers
}
if undefinedType then
ret[undefinedType] = encodeOthers
end
return ret
end