Module:UtilsVar

This module allows for data to be shared between invocations of a module on a given page, using Extension:VariablesLua. Use cases for this include counters and previewing Cargo storage.

Not to be confused with Module:UtilsArg.

---

local p = {}

local binser = require("binser")

function p.set(name, val)
	local var = binser.serialize(val)
	mw.getCurrentFrame():callParserFunction("#vardefine", name, var)
end

function p.get(name)
	local var = mw.getCurrentFrame():callParserFunction("#var", name)
	local val = binser.deserialize(var)[1]
	return val
end

function p.counter(name)
	name = name or ""
	return {
		increment = function()
			local val = p.get(name) or 0
			val = val + 1
			p.set(name, val)
		end,
		value = function()
			return p.get(name) or 0
		end
	}
end

return p