Issue 4125 - [emscripten] Convert filter classes to C++

lib/filterClassesNew.js

 "use strict";
 
-let compiled = require("./compiled");
-let {
-  createClass, wrapCall, stringArg, stringResult, defineProperty, defineMethod,
-  defineStringProperty,
-  _CreatePointer, _DeletePointer,
-  _Filter_GetType, _Filter_GetText, _Filter_FromText, _Filter_Normalize,
-  _InvalidFilter_GetReason,
-  _ActiveFilter_GetDisabled, _ActiveFilter_SetDisabled,
-  _ActiveFilter_GetHitCount, _ActiveFilter_SetHitCount,
-  _ActiveFilter_GetLastHit, _ActiveFilter_SetLastHit,
-  _RegExpFilter_Matches
-} = compiled;
-
-let constructors = Object.create(null);
-
-function createFilterClass(superclass, type, typeId)
+let compiled = require("compiled");
+for (let cls of ["Filter", "InvalidFilter", "CommentFilter", "ActiveFilter",
+    "RegExpFilter", "BlockingFilter", "WhitelistFilter", "ElemHideBase",
+    "ElemHideFilter", "ElemHideException", "CSSPropertyFilter"])
 {
-  let result = createClass(superclass);
-  if (type)
-    Object.defineProperty(result.prototype, "type", {get: () => type, enumerable: true});
-  if (typeId)
-    constructors[typeId] = result;
-  return result;
+  exports[cls] = compiled[cls];
 }
-
-function filterResult(call)
-{
-  return function()
-  {
-    let pointer = _CreatePointer();
-    try
-    {
-      let params = Array.slice(arguments);
-      params.unshift(pointer);
-
-      call.apply(this, params);
-      let type = _Filter_GetType(pointer);
-      if (type in constructors)
-        return new (constructors[type])(pointer);
-      else
-        throw new Error("Unexpected filter type " + type);
-    }
-    catch (e)
-    {
-      _DeletePointer(pointer);
-      throw e;
-    }
-  };
-}
-
-exports.Filter = createFilterClass();
-exports.Filter.fromText = wrapCall(stringArg(0, filterResult(_Filter_FromText)));
-exports.Filter.normalize = wrapCall(stringArg(0, stringResult(_Filter_Normalize)));
-defineStringProperty(exports.Filter, "text", _Filter_GetText);
-
-exports.InvalidFilter = createFilterClass(exports.Filter, "invalid", 1);
-defineStringProperty(exports.InvalidFilter, "reason", _InvalidFilter_GetReason);
-
-exports.CommentFilter = createFilterClass(exports.Filter, "comment", 2);
-
-exports.ActiveFilter = createFilterClass(exports.Filter);
-defineProperty(exports.ActiveFilter, "disabled", _ActiveFilter_GetDisabled, _ActiveFilter_SetDisabled);
-defineProperty(exports.ActiveFilter, "hitCount", _ActiveFilter_GetHitCount, _ActiveFilter_SetHitCount);
-defineProperty(exports.ActiveFilter, "lastHit", _ActiveFilter_GetLastHit, _ActiveFilter_SetLastHit);
-
-exports.RegExpFilter = createFilterClass(exports.ActiveFilter, "blocking", 3);
-defineMethod(exports.RegExpFilter, "matches", stringArg(1, _RegExpFilter_Matches));
-
-exports.WhiteListFilter = createFilterClass(exports.RegExpFilter, "whitelist", 4);
-exports.ElemHideBase = createFilterClass(exports.ActiveFilter);
-exports.ElemHideFilter = createFilterClass(exports.ElemHideBase, "elemhide", 5);
-exports.ElemHideException = createFilterClass(exports.ElemHideBase, "elemhideexception", 6);
-exports.CSSPropertyFilter = createFilterClass(exports.ElemHideBase, "cssproperty", 7);