util.stanza: Optimisation, remove useless if...then in stanza:children() iterator

[prosody.git] / util / filters.lua

diff --git a/util/filters.lua b/util/filters.lua
index f6a3e77ae36c1bfb6c94c0fd2fbead13908026ab..08e683c16c354ca69c8329a629e30ee6152bb8f5 100644 (file)
--- a/util/filters.lua
+++ b/util/filters.lua
@@ -11,19 +11,22 @@ local t_insert, t_remove = table.insert, table.remove;
 module "filters"
 
 function initialize(session)
-       local filters = {};
-       session.filters = filters;
-       
-       function session.filter(type, data)
-               local filter_list = filters[type];
-               if filter_list then
-                       for i = 1, #filter_list do
-                               data = filter_list[i](data);
-                               if data == nil then break; end
+       if not session.filters then
+               local filters = {};
+               session.filters = filters;
+               
+               function session.filter(type, data)
+                       local filter_list = filters[type];
+                       if filter_list then
+                               for i = 1, #filter_list do
+                                       data = filter_list[i](data);
+                                       if data == nil then break; end
+                               end
                        end
+                       return data;
                end
-               return data;
        end
+       return session.filter;
 end
 
 function add_filter(session, type, callback, priority)
@@ -62,4 +65,4 @@ function remove_filter(session, type, callback)
        end
 end
 
-return _M;
\ No newline at end of file
+return _M;