modules/policy: optimize postrules

I've never seen anyone use postrules.

diff --git a/modules/policy/policy.lua b/modules/policy/policy.lua
index cf6a0b73859f8c45f9888a39aae50f8acd7727de..d78e0f0ac0fb629d6152c7214fcb33c32960cea9 100644 (file)
--- a/modules/policy/policy.lua
+++ b/modules/policy/policy.lua
@@ -591,6 +591,8 @@ policy.layer = {
                       state
        end,
        finish = function(state, req)
+               -- Optimization for the typical case
+               if #policy.postrules == 0 then return state end
                -- Don't act on "resolved" cases.
                if bit.band(state, bit.bor(kres.FAIL, kres.DONE)) ~= 0 then return state end
                return policy.evaluate(policy.postrules, req, req:current(), state) or state