Difference between revisions of "Module:No globals"

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m (Protected Module:No globals: High-risk Lua module ([Edit=Allow only template editors and admins] (indefinite) [Move=Allow only template editors and admins] (indefinite)))
(rm name exception)
Line 1: Line 1:
 
local mt = getmetatable(_G) or {}
 
local mt = getmetatable(_G) or {}
 
function mt.__index (t, k)
 
function mt.__index (t, k)
if k ~= 'name' and k ~= 'arg' then
+
if k ~= 'arg' then
 
error('Tried to read nil global ' .. tostring(k), 2)
 
error('Tried to read nil global ' .. tostring(k), 2)
 
end
 
end

Revision as of 09:35, 2 May 2014

Documentation for this module may be created at Module:No globals/doc

local mt = getmetatable(_G) or {}
function mt.__index (t, k)
	if k ~= 'arg' then
		error('Tried to read nil global ' .. tostring(k), 2)
	end
	return nil
end
function mt.__newindex(t, k, v)
	if k ~= 'arg' then
		error('Tried to write global ' .. tostring(k), 2)
	end
	rawset(t, k, v)
end
setmetatable(_G, mt)