-- Polyfill require function
_G.require = function (module)
    -- Polyfill luv package
    if module == "luv" then
        local module = {}
        local metatable = {
            __index = function(t, i) 
                -- Polyfill gettimeofday
                if i == "gettimeofday" then
                    return function ()
                        local mil = os.epoch()
                        return mil / 1000, mil
                    end
                else
                    print("ERROR: Tell a dev to implement: " .. i)
                    error("ERROR: Tell a dev to implement: " .. i)
                end
             end
        }
        setmetatable(module, metatable)
        return module
    end
    print("ERROR: Tell a dev to implement: " .. module)
    error("ERROR: Tell a dev to implement: " .. module)
end

-- Polyfill bit. see: http://bitop.luajit.org/api.html

-- Already implemented
-- bit.band
-- bit.bnot
-- bit.bor
-- bit.bxor

--

bit.tobit = function(x)
    print("ERROR: Tell a dev to implement: bit.tobi")
    error()
end

bit.tohex = function(x,n)
    print("ERROR: Tell a dev to implement: bit.tohex")
    error()
end

bit.lshift = function(x,n)
    print("ERROR: Tell a dev to implement: bit.lshift")
    error()
end


bit.rshift = function(x,n)
    print("ERROR: Tell a dev to implement: bit.rshift")
    error()
end

bit.arshift = function(x,n)
    -- TODO: this seems to easy.
    return bit.brshift(x,n)
end

bit.rol = function(x,n)
    print("ERROR: Tell a dev to implement: bit.rol")
    error()
end

bit.ror = function(x,n)
    print("ERROR: Tell a dev to implement: bit.ror")
    error()
end

bit.bswap = function(x)
    print("ERROR: Tell a dev to implement: bit.bswap")
    error()
end