Issue 5063 - [emscripten] Make FilterNotifier calls more efficient

compiled/FilterNotifier.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2017 eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with Adblock Plus.  If not, see <http://www.gnu.org/licenses/>.
  */
 
 #include <emscripten.h>
 
 #include "FilterNotifier.h"
 
-namespace
+void FilterNotifier::FilterChange(Topic topic, Filter* filter)
 {
-  enum class ArgType
-  {
-    BOOL = 0,
-    INT = 1,
-    INT64 = 2,
-    STRING = 3,
-  };
-
-  template<typename T>
-  void NotifyPropertyChange(FilterNotifier::Topic topic, void* object,
-      T newValue, T oldValue, ArgType type)
-  {
-    EM_ASM_ARGS({
-      var topic = notifierTopics.get($0);
-      var object = topic.startsWith("subscription.") ?
-          exports.Subscription.fromPointer($1) :
-          exports.Filter.fromPointer($1);
-      var newValue;
-      var oldValue;
-      if ($4 == 0)
-      {
-        newValue = $2 != 0;
-        oldValue = $3 != 0;
-      }
-      else if ($4 == 3)
-      {
-        newValue = readString($2);
-        oldValue = readString($3);
-      }
-      else
-      {
-        newValue = $2;
-        oldValue = $3;
-      }
-      FilterNotifier.triggerListeners(topic, object, newValue, oldValue);
-    }, topic, object, (sizeof(T) <= 4 ? newValue : (double)newValue),
-       (sizeof(T) <= 4 ? oldValue : (double)oldValue), type);
-  }
-
-  template void NotifyPropertyChange<int>(FilterNotifier::Topic, void*,
-      int, int, ArgType);
-
-  template void NotifyPropertyChange<double>(FilterNotifier::Topic, void*,
-      double, double, ArgType);
+  EM_ASM_ARGS({
+    FilterNotifier.triggerListeners(notifierTopics.get($0),
+                                    exports.Filter.fromPointer($1));
+  }, topic, filter);
 }
 
-namespace FilterNotifier
+void FilterNotifier::SubscriptionChange(Topic topic, Subscription* subscription)
 {
-  void PropertyChange(Topic topic, void* object, bool newValue, bool oldValue)
-  {
-    NotifyPropertyChange<int>(topic, object, newValue, oldValue, ArgType::BOOL);
-  }
-
-  void PropertyChange(Topic topic, void* object, int newValue, int oldValue)
-  {
-    NotifyPropertyChange<int>(topic, object, newValue, oldValue, ArgType::INT);
-  }
-
-  void PropertyChange(Topic topic, void* object, unsigned int newValue,
-      unsigned int oldValue)
-  {
-    NotifyPropertyChange<int>(topic, object, newValue, oldValue, ArgType::INT);
-  }
-
-  void PropertyChange(Topic topic, void* object, uint64_t newValue,
-      uint64_t oldValue)
-  {
-    NotifyPropertyChange<uint64_t>(topic, object, newValue, oldValue,
-                                   ArgType::INT64);
-  }
-
-  void PropertyChange(Topic topic, void* object, const String& newValue,
-      const String& oldValue)
-  {
-    NotifyPropertyChange<int>(topic, object, reinterpret_cast<int>(&newValue),
-                              reinterpret_cast<int>(&oldValue), ArgType::STRING);
-  }
+  EM_ASM_ARGS({
+    FilterNotifier.triggerListeners(notifierTopics.get($0),
+                                    exports.Subscription.fromPointer($1));
+  }, topic, subscription);
 }