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

compiled/debug.h

-#ifndef ADBLOCK_PLUS_DEBUG_H
-#define ADBLOCK_PLUS_DEBUG_H
-
-#include <string>
+#pragma once
 
 #include <emscripten.h>
+#include <emscripten/trace.h>
+
+#if defined(assert)
+#undef assert
+#endif
+
+class String;
 
 struct console_type
 {
-  static void log(const std::u16string& str)
+  static void log(const String& str)
   {
-    EM_ASM_ARGS(console.log(getStringData($0)), &str);
+    EM_ASM_ARGS(console.log(readString($0)), &str);
   }
 
   static void log(int i)
   {
     EM_ASM_ARGS(console.log($0), i);
   }
 
   static void log(void* ptr)
   {
     EM_ASM_ARGS(console.log($0), ptr);
   }
+
+  static void error(const String& str)
+  {
+    EM_ASM_ARGS(console.error(new Error(readString($0)).stack), &str);
+  }
 };
 
 static console_type console;
 
+#if defined(DEBUG)
+inline void assert(bool condition, const String& str)
+{
+  if (!condition)
+    console.error(str);
+}
+#else
+#define assert(condition, str)
 #endif
+
+inline void annotate_address(void* address, const char* name)
+{
+#if defined(__EMSCRIPTEN_TRACING__)
+  emscripten_trace_annotate_address_type(address, name);
+#endif
+}
+
+inline void enter_context(const char* context)
+{
+#if defined(__EMSCRIPTEN_TRACING__)
+  emscripten_trace_enter_context(context);
+#endif
+}
+
+inline void exit_context()
+{
+#if defined(__EMSCRIPTEN_TRACING__)
+  emscripten_trace_exit_context();
+#endif
+}