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

compiled/debug.h

+#pragma once
+
+#include <emscripten.h>
+#include <emscripten/trace.h>
+
+#if defined(assert)
+#undef assert
+#endif
+
+class String;
+
+struct console_type
+{
+  static void log(const String& str)
+  {
+    EM_ASM_ARGS(console.log(getStringData($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(getStringData($0)).stack), &str);
+  }
+};
+
+static console_type console;
+
+inline void assert(bool condition, const String& str)
+{
+#if defined(DEBUG)
+  if (!condition)
+    console.error(str);
+#endif
+}

[sergei, 2016/02/23 15:45:57]

BTW, I would #define `assert` to nothing when DEBUG is not defined. In this case
its arguments definitely won't be evaluated, otherwise it can have a huge
performance influence.

[Wladimir Palant, 2016/02/23 21:35:01]

Done.

+
+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
+}