#include <iostream>
#include <source_location>
template<class BaseClass>
struct LoggingClass
{
protected:
template <typename... Ts>
struct FAEWE_LOG_THREAD
{
FAEWE_LOG_THREAD( const char * formatString, Ts &&... logArguments,
const std::source_location & sourceLocation = std::source_location::current() )
{
//////////////////////////////////////////////////////////////
// How to access <getInstrumentsId()> defined in LoggingClass?
//std::cout << "InstrumentsId from LoggingClass:" << ???
//////////////////////////////////////////////////////////////
}
FAEWE_LOG_THREAD( const bool fallbackToServer, const char * formatString, Ts &&... logArguments,
const std::source_location & sourceLocation = std::source_location::current() )
{
}
};
template <typename... Ts>
FAEWE_LOG_THREAD( const char *, Ts &&... ) -> FAEWE_LOG_THREAD<Ts...>;
template <typename... Ts>
FAEWE_LOG_THREAD( const bool, const char *, Ts &&... ) -> FAEWE_LOG_THREAD<Ts...>;
inline auto getInstrumentsId() -> uint
{
return static_cast<BaseClass *>(this)->m_instrumentsId; // 73
}
};
class Faewe : protected LoggingClass<Faewe>
{
friend class LoggingClass;
protected:
uint m_instrumentsId {73};
public:
auto demo() -> void;
};
auto Faewe::demo() -> void
{
FAEWE_LOG_THREAD( "Pi=%.3f", 3.141 );
FAEWE_LOG_THREAD( true, "Euler's=%.3f", 2.718 );
std::cout << "InstrumentsId in LoggingClass=" << this->getInstrumentsId() << std::endl;
}
auto main() -> int
{
Faewe faewe;
faewe.demo();
return 0;
}
