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

compiled/ActiveFilter.h

+#ifndef ADBLOCK_PLUS_ACTIVE_FILTER_H
+#define ADBLOCK_PLUS_ACTIVE_FILTER_H
+
+#include <string>
+#include <unordered_map>
+#include <unordered_set>
+
+#include "Filter.h"
+#include "api.h"
+
+class ActiveFilter : public Filter
+{
+private:
+  bool ignoreTrailingDot;
+protected:
+  std::unordered_map<std::u16string,bool> domains;
+  std::unordered_set<std::u16string> sitekeys;
+  void ParseDomains(const std::u16string& str, char16_t separator);
+public:
+  explicit ActiveFilter(const std::u16string& text,
+      bool ignoreTrailingDot);
+  FILTER_PROPERTY(bool, disabled, GetDisabled, SetDisabled);
+  FILTER_PROPERTY(unsigned int, hitCount, GetHitCount, SetHitCount);
+  FILTER_PROPERTY(unsigned int, lastHit, GetLastHit, SetLastHit);
+  bool IsActiveOnDomain(const std::u16string& docDomain,
+      const std::u16string& sitekey);
+  bool IsActiveOnlyOnDomain(const std::u16string& docDomain);
+  bool IsGeneric();
+  const std::u16string Serialize();
+};
+
+#endif