Custom exceptions with default behaviour
I've been pondering which of these 2 approaches would make for the best interface for a library: Defining custom exceptions with specific names for different error scenarios but with standard behaviour, or simply using the predefined exceptions from the STL.
This is my current approach:
Code:
namespace rpp
{
class ConnectionError : public std::exception
{
public:
ConnectionError(const std::string &p_err);
const char* what() const throw();
private:
std::string m_err;
};
class AuthenticationError : public std::exception
{
public:
AuthenticationError(const std::string &p_err);
const char* what() const throw();
private:
std::string m_err;
};
class ParsingError : public std::exception
{
public:
ParsingError(const std::string &p_err);
const char* what() const throw();
private:
std::string m_err;
};
class Error : public std::exception
{
public:
Error(const std::string &p_err);
const char* what() const throw();
private:
std::string m_err;
};
}
This seems to make for more descriptive code but it adds no functionality and the implementations are completely identical, which seems "off" to me, somehow.
