Module:VarsUtil

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Documentation for this module may be created at Module:VarsUtil/doc

local util_args = require ('Module:ArgsUtil')
--local binser = require('binser')

local p = {}

function p.getVar(var)
	local val = mw.getCurrentFrame():callParserFunction('#var', var)
	if val == '' then
		return nil
	end
	return val
end

function p.getBool(var)
	local val = p.getVar(var)
	return util_args.castAsBool(val)
end

function p.setBool(var, val)
	local bool = util_args.castAsBool(val)
	if bool then
		p.setVar(var, 'Yes')
	else
		p.setVar(var, 'No')
	end
	return bool
end

function p.setVar(var, val)
	mw.getCurrentFrame():callParserFunction('#vardefine:' .. var, val)
	return val
end

function p.setVarOnlyIf(var, val)
	if not val then return end
	p.setVar(var, val)
end

function p.getGlobalIndex(name)
	local val = p.getVar('luaGlobalIndex' .. name)
	return tonumber(val or 0) or 0
end

function p.setGlobalIndex(name)
	local n = p.getGlobalIndex(name) + 1
	p.setVar('luaGlobalIndex' .. name, n)
	return n
end

function p.resetGlobalIndex(name, val)
	val = val or 0
	p.setVar('luaGlobalIndex' .. name, val)
	return val
end

function p.appendToList(name, val, sep)
	-- this is just for helping to debug and shouldn't actually be used ever probably
	sep = sep or ', '
	local old_val = p.getVar(name) or ''
	p.setVar(name, old_val .. sep .. val)
end

function p.log(val)
	p.appendToList('log', tostring(val))
end

function p.logObject(val)
	local tbl = {}
	for k, v in pairs(val) do
		tbl[#tbl+1] = k .. ': ' .. v
	end
	p.appendToList('log', table.concat(tbl,', '))
end

function p.clearAll(tbl)
	for _, v in ipairs(tbl) do
		p.setVar(v, '')
	end
end

function p.setTypedVar(var, val)
	local val_to_store = binser.serialize(val)
	p.setVar(var, val_to_store)
end

function p.getTypedVar(var)
	local val = p.getVar(var)
	if not val then
		return nil
	end
	return binser.deserialize(val)[1]
end

function p.setObject(var, val)
	local val_to_store = binser.serialize(val)
	p.setVar(var, val_to_store)
end

function p.getObject(var)
	local val = p.getVar(var)
	if not val then
		return nil
	end
	return binser.deserialize(val)[1]
end

return p