sstrict.lua
Super Strict is a pure Lua library that finds undeclared variables and other minor mistakes in your source code through static analysis. You do not need to execute any code to find your mistakes because Super Strict will check the code during loading. Just require the "sstrict.lua" file and any subsequent calls to "require","dofile","loadfile" or "loadstring" will be checked through Super Strict.
require('sstrict.lua')
To exclude a specific Lua file from the being checked place the "--!strict" line at the top of your source code.
Contents
Undefined and unused variables
function foo()
a = 5 -- undefined variable 'a'
end
function bar(a, b)
local c = a + b -- unused variable 'c'
return a + b
end
Redefinition of variable names
for i = 1, 10 do
for i = 1, 10 do
-- variable name 'i' redefinition
end
end
Empty and unnecessary code blocks
for i = 1, 3 do
-- empty code block error
end
function baz()
local n = 5
n = n - 1 -- unnecessary code block error
end
Constant conditions
if 5+5 > 11 then
-- constant condition error in if/else statement
end
Too many values in assignment
a = 1, 2 -- too many values on the right-hand side in assignment
Duplicate variables, arguments and table fields
t =
{
['a'] = 100,
a = 100 -- duplicate field 'a' in table constructor
}
for b, b in pairs(t) do
-- duplicate lvariable 'b'
end
c, c = 1, 2 -- duplicate variable 'c'
function foo(d, d)
-- duplicate argument 'd'
end