Pre-compile EQL expressions for episode filtering

src/gpodder/gtkui/model.py

@@ -71,6 +71,7 @@ class EpisodeListModel(gtk.ListStore):
         self._sorter = gtk.TreeModelSort(self._filter)
         self._view_mode = self.VIEW_ALL
         self._search_term = None
+        self._search_term_eql = None
         self._filter.set_visible_func(self._filter_visible_func)
 
         # Are we currently showing the "all episodes" view?
@@ -114,8 +115,7 @@ class EpisodeListModel(gtk.ListStore):
                 return False
 
             try:
-                q = query.UserEQL(self._search_term)
-                return q.match(episode)
+                return self._search_term_eql.match(episode)
             except Exception, e:
                 return True
 
@@ -164,6 +164,7 @@ class EpisodeListModel(gtk.ListStore):
     def set_search_term(self, new_term):
         if self._search_term != new_term:
             self._search_term = new_term
+            self._search_term_eql = query.UserEQL(new_term)
             self._filter.refilter()
             self._on_filter_changed(self.has_episodes())
 

src/gpodder/query.py

@@ -130,7 +130,19 @@ class EQL(object):
             a, query, b = match.groups()
             self._query = query.lower()
 
+        # For everything else, compile the expression
+        if not self._regex and not self._string:
+            try:
+                self._query = compile(query, '<eql-string>', 'eval')
+            except Exception, e:
+                print e
+                self._query = None
+
+
     def match(self, episode):
+        if self._query is None:
+            return False
+
         if self._regex:
             return re.search(self._query, episode.title, self._flags) is not None
         elif self._string: