Noissue - add copy and move constructors and assign operators for Filter

include/AdblockPlus/FilterEngine.h

 /*
  * 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
@@ skipping 21 matching lines @@
   typedef std::shared_ptr<FilterEngine> FilterEnginePtr;
 
   /**
    * Wrapper for an Adblock Plus filter object.
    * There are no accessors for most
    * [filter properties](https://adblockplus.org/jsdoc/adblockpluscore/Filter.html),
    * use `GetProperty()` to retrieve them by name.
    */
   class Filter : public JsValue
   {
+    friend class FilterEngine;
   public:
+    Filter(const Filter& src);
+    Filter(Filter&& src);
+    Filter& operator=(const Filter& src);
+    Filter& operator=(Filter&& src);
+
     /**
      * Filter types, see https://adblockplus.org/en/filters.
      */
     enum Type {TYPE_BLOCKING, TYPE_EXCEPTION,
                TYPE_ELEMHIDE, TYPE_ELEMHIDE_EXCEPTION,
                TYPE_COMMENT, TYPE_INVALID};
 
     /**
      * Retrieves the type of this filter.
      * @return Type of this filter.
@@ skipping 11 matching lines @@
      */
     void AddToList();
 
     /**
      * Removes this filter from the list of custom filters.
      */
     void RemoveFromList();
 
     bool operator==(const Filter& filter) const;
 
+  protected:
     /**
      * Creates a wrapper for an existing JavaScript filter object.
      * Normally you shouldn't call this directly, but use
      * FilterEngine::GetFilter() instead.
      * @param value JavaScript filter object.
      */
     Filter(JsValue&& value);
   };
 
   /**
@@ skipping 456 matching lines @@
       const JsValueList& param) const;
     FilterPtr GetWhitelistingFilter(const std::string& url,
       ContentTypeMask contentTypeMask, const std::string& documentUrl) const;
     FilterPtr GetWhitelistingFilter(const std::string& url,
       ContentTypeMask contentTypeMask,
       const std::vector<std::string>& documentUrls) const;
   };
 }
 
 #endif