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

compiled/Filter.h

Index: compiled/Filter.h
===================================================================
new file mode 100644
--- /dev/null
+++ b/compiled/Filter.h
@@ -0,0 +1,49 @@
+#ifndef ADBLOCK_PLUS_FILTER_H
+#define ADBLOCK_PLUS_FILTER_H
+
+#include <memory>
+#include <string>
+#include <vector>
+
+class Filter;
+
+typedef std::shared_ptr<Filter> FilterPtr;
+
+class Filter
+{
+private:
+  std::wstring text;
+
+public:
+  explicit Filter(const std::wstring& text);
+
+  /* TODO
+  std::vector<Subscription> subscriptions;
+  */
+
+  const std::wstring GetText() const
+  {
+    return text;
+  }
+
+  enum Type
+  {
+    UNKNOWN,
+    INVALID,
+    COMMENT,
+    BLOCKING,
+    WHITELIST,
+    ELEMHIDE,
+    ELEMHIDEEXCEPTION,
+    CSSPROPERTY,
+  };
+
+  virtual Type GetType() const = 0;
+
+  virtual const std::wstring Serialize();
+
+  static FilterPtr FromText(const std::wstring& text);
+  static const std::wstring Normalize(const std::wstring& text);
+};
+
+#endif