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

compiled/RegExpFilter.h

Index: compiled/RegExpFilter.h
===================================================================
new file mode 100644
--- /dev/null
+++ b/compiled/RegExpFilter.h
@@ -0,0 +1,32 @@
+#ifndef ADBLOCK_PLUS_REG_EXP_FILTER_H
+#define ADBLOCK_PLUS_REG_EXP_FILTER_H
+
+#include "Filter.h"
+#include "ActiveFilter.h"
+
+class RegExpFilter : public ActiveFilter
+{
+private:
+  enum TrippleState {YES, NO, ANY};
+
+  mutable int mRegexpId;
+  String mRegexpSource;
+  int mContentType;
+  bool mMatchCase;
+  TrippleState mThirdParty;
+  TrippleState mCollapse;
+  void ProcessOption(String& options, int optionStart,
+      int optionEnd, int valueStart, int valueEnd);
+public:
+  explicit RegExpFilter(const String& text,
+      String::size_type patternStart, String::size_type patternEnd);
+  ~RegExpFilter();
+  static Filter* Create(const String& text);
+  EMSCRIPTEN_KEEPALIVE static void InitJSTypes();
+  static String RegExpFromSource(const String& source);
+  Type GetType() const;
+  EMSCRIPTEN_KEEPALIVE bool Matches(const String& location, int typeMask, String& docDomain,
+      bool thirdParty, const String& sitekey) const;
+};
+
+#endif