forked from public/foundryvtt-swade-fr
67 lines
1.5 KiB
Lua
67 lines
1.5 KiB
Lua
--[[
|
|
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 type = type
|
|
|
|
local _ENV = nil
|
|
|
|
-- Shortcut that works
|
|
local encodeBoolean = tostring
|
|
|
|
local defaultOptions = {
|
|
allowUndefined = true,
|
|
null = jsonutil.null,
|
|
undefined = jsonutil.undefined
|
|
}
|
|
|
|
local modeOptions = {}
|
|
|
|
modeOptions.strict = {
|
|
allowUndefined = false
|
|
}
|
|
|
|
local function mergeOptions(options, mode)
|
|
jsonutil.doOptionMerge(options, false, 'others', defaultOptions, mode and modeOptions[mode])
|
|
end
|
|
local function getEncoder(options)
|
|
options = options and jsonutil.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
|
|
|
|
local others = {
|
|
encodeBoolean = encodeBoolean,
|
|
mergeOptions = mergeOptions,
|
|
getEncoder = getEncoder
|
|
}
|
|
|
|
return others
|