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27 lines
428 B
27 lines
428 B
3 years ago
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local strict = {}
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strict.defined = {}
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-- used to define a global variable
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function global(t)
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for k, v in pairs(t) do
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strict.defined[k] = true
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rawset(_G, k, v)
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end
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end
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function strict.__newindex(t, k, v)
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error("cannot set undefined variable: " .. k, 2)
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end
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function strict.__index(t, k)
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if not strict.defined[k] then
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error("cannot get undefined variable: " .. k, 2)
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end
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end
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setmetatable(_G, strict)
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