Module:No globals: Difference between revisions

From Roblox SCP Wiki
Jump to navigation Jump to search
m (7 revisions imported from meta:Module:No_globals)
 
w>MusikAnimal
(Undid revision 948472525 by [[Special:Contributions/w>DiBabelYurikBot|w>DiBabelYurikBot]] ([[User talk:w>DiBabelYurikBot|talk]]))
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 read 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 06:28, 1 April 2020

[[Category:Languages pages{{#translation:}}]]
warning Warning:Do not edit. This page is maintained by an automated tool. All edits should be done at mediawiki.org. (translate this warning)
Please help translate this page.

Usage

Include this module at the top of your code. An error will be raised any time your code tries to read or write to a non-local (undeclared) variable.

Tests

Test Status
Module:No globals success: 1, error: 0, skipped: 0
Module:No globals/sandbox success: 1, error: 0, skipped: 0

[[Category:Modules{{#translation:}}]]


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)