lite-xl/data/core/strict.lua

27 lines
428 B
Lua
Raw Normal View History

2019-12-28 12:16:32 +01:00
local strict = {}
strict.defined = {}
-- used to define a global variable
function global(t)
for k, v in pairs(t) do
strict.defined[k] = true
rawset(_G, k, v)
end
end
function strict.__newindex(t, k, v)
error("cannot set undefined variable: " .. k, 2)
end
function strict.__index(t, k)
if not strict.defined[k] then
error("cannot get undefined variable: " .. k, 2)
end
end
setmetatable(_G, strict)