modlib/debug.lua

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local function gather_info()
local locals = {}
local index = 1
while true do
local name, value = debug.getlocal(2, index)
if not name then break end
table.insert(locals, {name, value})
index = index + 1
end
local upvalues = {}
local func = debug.getinfo(2).func
local envs = getfenv(func)
index = 1
while true do
local name, value = debug.getupvalue(func, index)
if not name then break end
table.insert(upvalues, {name, value})
index = index + 1
end
return {
locals = locals,
upvalues = upvalues,
[envs == _G and "globals" or "envs"] = envs
}
end
local c = 3
function test()
local a = 1
b = 2
error(gather_info().upvalues[1][1])
end
test()