lua: remove some compatibility code

NEWS

@@ -3,11 +3,10 @@ Knot Resolver 1.4.0 (2017-0x-yy)
 
 Incompatible changes
 --------------------
-
 - lua: query flag-sets are no longer represented as plain integers.
-  Using bit operations directly on kres.query.* no longer works,
-  but other use cases should work as before.  Still, it is recommended
-  to instead write code like qry.flags.NO_0X20 = true.
+  kres.query.* no longer works, and kr_query_t lost trivial methods
+  'hasflag' and 'resolved'.
+  You can instead write code like qry.flags.NO_0X20 = true.
 
 
 Knot Resolver 1.3.2 (2017-07-28)

daemon/lua/kres.lua.in

@@ -252,16 +252,8 @@ local kr_query_t = ffi.typeof('struct kr_query')
 ffi.metatype( kr_query_t, {
 	__index = {
 		name = function(qry) return ffi.string(qry.sname, knot.knot_dname_size(qry.sname)) end,
-		-- legacy functions
-		hasflag = function(qry, flag) -- Note: `flag` is now a string - flag name.
-			return qry.flags[flag]
-		end,
-		resolved = function(qry)
-			return qry.flags.RESOLVED
-		end,
-
 		final = function(qry)
-			return qry:resolved() and (qry.parent == nil)
+			return qry.flags.RESOLVED and (qry.parent == nil)
 		end,
 		nslist = function(qry, list)
 			assert(#list <= 4, 'maximum of 4 addresses can be evaluated for each query')
@@ -350,8 +342,7 @@ kres = {
 	-- Create a struct kr_qflags from a single flag name or a list of names.
 	mk_qflags = function (names)
 		local kr_qflags = ffi.typeof('struct kr_qflags')
-		-- compat. hacks
-		if names == 0 or names == nil then
+		if names == 0 or names == nil then -- compatibility: nil is common in lua
 			names = {}
 		elseif type(names) == 'string' then
 			names = {names}
@@ -365,9 +356,6 @@ kres = {
 		end
 		return fs
 	end,
-	-- Don't use anymore - compat. hack: :hasflag() etc. now accept string names
-	-- but bit operations won't work.
-	query = setmetatable({}, { __index = function (t, name) return name end }),
 
 	CONSUME = 1, PRODUCE = 2, DONE = 4, FAIL = 8, YIELD = 16,
 	-- Metatypes.  Beware that any pointer will be cast silently...

modules/dns64/dns64.lua

@@ -17,7 +17,7 @@ mod.layer = {
 		req = kres.request_t(req)
 		qry = req:current()
 		-- Observe only authoritative answers
-		if mod.proxy == nil or not qry:resolved() then
+		if mod.proxy == nil or not qry.flags.RESOLVED then
 			return state
 		end
 		-- Synthetic AAAA from marked A responses