gistfile1.cpp

class FixedPrecisionDecimal
{
	const int number;  // 1234.5678

	FixedPrecisionDecimal(float)
	{

	}
	FixedPrecisionDecimal(double)
	{

	}

	float getFloat()
	{
		return processAsFloat(number);
	}
	double getDouble()
	{
		return processAsDouble(number);
	}
};

// Unified message
class Message {

	enum MessageType {
		Authorize,
		FillGas,
	};

	private MessageType msgType;

	auto getType() const {
		return msgType;
	}
};

// Unified message
class AuthorizeMsg : Message
{
	auto getPumpId()
	{
		return 1;
	}

	auto getStationId()
	{
		return 1023;
	}
};

class TatsunoHandler : QThread
{
	public slots:
		// This slots gets called whenever there's a new message from POS
		void newMessage(Message * msg)
		{
			//
			switch(msg->getType()){
				case Authorize:
					auto authorizeMsg = dynamic_cast< AuthorizeMsg * >msg;
					// do Tatsuno "authorize" processing here
					break;
			}			
		}

		// "tatsuno, authorize, 5.00"
		// "tatsun, authorize, 5.00"
		void newMessage(QString const msg)
		{

		}

		def newMessage(msg):

};