Issue 5143 - Convert ElemHideEmulation to C++

lib/elemHideEmulation.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-present 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/>.
  */
 
 "use strict";
 
-/**
- * @fileOverview Element hiding emulation implementation.
- */
+const {ElemHideEmulation} = require("compiled");
 
-const {ElemHide} = require("elemHide");
-const {Filter} = require("filterClasses");
-
-let filters = Object.create(null);
-
-/**
- * Container for element hiding emulation filters
- * @class
- */
-let ElemHideEmulation = {
-  /**
-   * Removes all known filters
-   */
-  clear()
-  {
-    filters = Object.create(null);
-  },
-
-  /**
-   * Add a new element hiding emulation filter
-   * @param {ElemHideEmulationFilter} filter
-   */
-  add(filter)
-  {
-    filters[filter.text] = true;
-  },
-
-  /**
-   * Removes an element hiding emulation filter
-   * @param {ElemHideEmulationFilter} filter
-   */
-  remove(filter)
-  {
-    delete filters[filter.text];
-  },
-
-  /**
-   * Returns a list of all rules active on a particular domain
-   * @param {string} domain
-   * @return {ElemHideEmulationFilter[]}
-   */
-  getRulesForDomain(domain)
-  {
-    let result = [];
-    let keys = Object.getOwnPropertyNames(filters);
-    for (let key of keys)
-    {
-      let filter = Filter.fromText(key);
-      if (filter.isActiveOnDomain(domain) &&
-          !ElemHide.getException(filter, domain))
-      {
-        result.push(filter);
-      }
-    }
-    return result;
-  }
-};
 exports.ElemHideEmulation = ElemHideEmulation;