foundryvtt-swade-fr/tools/luajson/json/encode/number.lua

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2022-05-28 09:30:19 +02:00
--[[
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 huge = require("math").huge
local _ENV = nil
local defaultOptions = {
nan = true,
inf = true
}
local modeOptions = {}
modeOptions.strict = {
nan = false,
inf = false
}
local function mergeOptions(options, mode)
jsonutil.doOptionMerge(options, false, 'number', defaultOptions, mode and modeOptions[mode])
end
local function encodeNumber(number, options)
if number ~= number then
assert(options.nan, "Invalid number: NaN not enabled")
return "NaN"
end
if number == huge then
assert(options.inf, "Invalid number: Infinity not enabled")
return "Infinity"
end
if number == -huge then
assert(options.inf, "Invalid number: Infinity not enabled")
return "-Infinity"
end
return tostring(number)
end
local function getEncoder(options)
options = options and jsonutil.merge({}, defaultOptions, options) or defaultOptions
return {
number = function(number, state)
return encodeNumber(number, options)
end
}
end
local number = {
mergeOptions = mergeOptions,
getEncoder = getEncoder
}
return number