Glenn Maynard
4564b0d5a2
This is normally statically linked in releases. Lua also needs some patching in Linux x86 to fix performance issues related to alignment, will need patching if we want fine-grained threading, and generally has an odd "build it yourself" design, so let's just add embed this one. (note: disable PCH for these files in VC, and don't add lua.c, luac.c, or print.c to the project)
35 lines
806 B
Lua
35 lines
806 B
Lua
--
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-- strict.lua
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-- checks uses of undeclared global variables
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-- All global variables must be 'declared' through a regular assignment
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-- (even assigning nil will do) in a main chunk before being used
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-- anywhere or assigned to inside a function.
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--
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local mt = getmetatable(_G)
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if mt == nil then
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mt = {}
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setmetatable(_G, mt)
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end
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mt.__declared = {}
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mt.__newindex = function (t, n, v)
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if not mt.__declared[n] then
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local w = debug.getinfo(2, "S").what
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if w ~= "main" and w ~= "C" then
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error("assign to undeclared variable '"..n.."'", 2)
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end
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mt.__declared[n] = true
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end
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rawset(t, n, v)
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end
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mt.__index = function (t, n)
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if not mt.__declared[n] and debug.getinfo(2, "S").what ~= "C" then
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error("variable '"..n.."' is not declared", 2)
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end
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return rawget(t, n)
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end
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