Issue 5201 - [emscripten] Replace EM_ASM calls by a custom JavaScript library

compiled/filter/RegExpFilter.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 <cctype>
 #include <climits>
 #include <cstdio>
 #include <string>
 
-#include <emscripten.h>
-
 #include "RegExpFilter.h"
+#include "../library.h"
 #include "../StringScanner.h"
 #include "../StringMap.h"
-
-extern "C"
-{
-  int GenerateRegExp(const String& regexp, bool matchCase);
-  void DeleteRegExp(int id);
-  bool TestRegExp(int id, const String& str);
-}
 
 namespace
 {
   enum
   {
     TYPE_OTHER = 0x1,
     TYPE_SCRIPT = 0x2,
     TYPE_IMAGE = 0x4,
     TYPE_STYLESHEET = 0x8,
     TYPE_OBJECT = 0x10,
@@ skipping 351 matching lines @@
     return false;
   }
 
   if (!mData.RegExpParsingDone())
   {
     const OwnedString pattern(mData.GetRegExpSource(mText));
     mData.SetRegExp(GenerateRegExp(RegExpFromSource(pattern), mData.mMatchCase));
   }
   return TestRegExp(mData.mRegexpId, location);
 }