Module:No globals: Difference between revisions

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metawikimedia>DiBabelYurikBot
m Copying one change by Mainframe98: "From Module:No globals/sandbox, per Topic:Uyr5gphaxbpe5k4h" from mw:Module:No globals. (docs, translate)
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Line 2: Line 2:
function mt.__index (t, k)
function mt.__index (t, k)
if k ~= 'arg' then
if k ~= 'arg' then
-- perf optimization here and below: do not load Module:TNT unless there is an error
error('Tried to view nil global ' .. tostring(k), 2)
error(require('Module:TNT').format('I18n/No globals', 'err-read', tostring(k)), 2)
end
end
return nil
return nil
Line 9: Line 8:
function mt.__newindex(t, k, v)
function mt.__newindex(t, k, v)
if k ~= 'arg' then
if k ~= 'arg' then
error(require('Module:TNT').format('I18n/No globals', 'err-write', tostring(k)), 2)
error('Tried to write global ' .. tostring(k), 2)
end
end
rawset(t, k, v)
rawset(t, k, v)
end
end
setmetatable(_G, mt)
setmetatable(_G, mt)

Revision as of 01:08, 31 May 2019

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 view 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)
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