Remove struct and class from the Boost-generated type_name string

Journal/JournalCppDefs.cc

@@ -24,13 +24,26 @@ namespace Cpp
 {
 
 #ifdef JOURNAL_USE_BOOST
+template <size_t n>
+void erase_start_substring(String& _str, const char (&_substr)[n])
+{
+  if (_str.rfind(_substr, 0) == 0) // is _substr at the start?
+    _str.erase(0, n - 1);
+}
 
 void filter_type_name(String& _type_name)
 {
+  erase_start_substring(_type_name, "struct ");
+  erase_start_substring(_type_name, "class ");
+
+#ifdef _MSC_VER
+  // on MSVC, pointer types contain __ptr64 which is MSVC only, so filter it out
   const char PTR64_STR[] = " __ptr64";
   const auto pos = _type_name.find(PTR64_STR);
   if (pos != String::npos)
     _type_name.erase(pos, sizeof(PTR64_STR) - 1);
+#endif // _MSC_VER
+
 }
 
 #endif

Journal/JournalCppDefs.hh

@@ -34,10 +34,7 @@ void filter_type_name(String& _type_name);
 template <class T> String type_name()
 {
   auto str = boost::core::demangled_name(BOOST_CORE_TYPEID(T));
-#ifdef _MSC_VER
-  // on MSVC, pointer types contain __ptr64 which is MSVC only, so filter it out
-  filter_type_name(str);
-#endif // _MSC_VER
+  filter_type_name(str); // apply some filtering to fix & simplify type names
   return str;
 }