Module:No globals: Difference between revisions

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m>Jackmcbarn
←Created page with 'local mt = getmetatable(_G) or {} local oldIndex = mt.__index or function() return nil end mt.__index = function(t, k) if k ~= 'name' and k ~= 'arg' then erro...'
 
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local mt = getmetatable(_G) or {}
local mt = getmetatable(_G) or {}
local oldIndex = mt.__index or function() return nil end
function mt.__index (t, k)
mt.__index = function(t, k)
if k ~= 'arg' then
if k ~= 'name' and k ~= 'arg' then
-- perf optimization here and below: do not load Module:TNT unless there is an error
error('Tried to read nil global ' .. tostring(k), 2)
error(require('Module:TNT').format('I18n/No globals', 'err-read', tostring(k)), 2)
end
end
return oldIndex(t, k)
return nil
end
end
local oldNewindex = mt.__newindex or rawset
function mt.__newindex(t, k, v)
function mt.__newindex(t, k, v)
if k ~= 'name' and k ~= 'arg' then
if k ~= 'arg' then
error('Tried to write global ' .. tostring(k), 2)
error(require('Module:TNT').format('I18n/No globals', 'err-write', tostring(k)), 2)
end
end
oldNewindex(t, k, v)
rawset(t, k, v)
end
end
setmetatable(_G, mt)
setmetatable(_G, mt)
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