Method enumString

src/util/bytefile.hpp:119–128

#pragma GCC diagnostic push 
#pragma GCC diagnostic ignored "-Wreturn-type"
      static std::string enumString(Type t) {
        switch(t) {
        case Type::FileNotOpen:
          return "File not open"; break;
        case Type::ExceptionThrown:
          return "Exception thrown"; break;
        case Type::PastEnd:
          return "Past the end of the file"; break;
        }
      }
#pragma GCC diagnostic pop

      const char* what() const noexcept override {