On 7/20/06, Oleg Abrosimov <beholder@gorodok.net> wrote:
//in application_exception_handler.hpp struct my_exception_handler { void operator()(std::string& sError); //Note here void operator()(std::exception& oError); void operator()(std::logic_error& oError); void operator()(void); };
//in application.cpp typedef boost::mpl::vector<std::logic_error, std::exception> exceptions; //Note here
int main() try { throw std::logic_error("testing"); } catch(...) { catcher<exceptions>(my_exception_handler()); //Note here }
with this transformation one can use one my_exception_handler class with many reduced exceptions typelists. It also eliminates the duplication problem. Duplication still exists but is intensional.
I have considered doing that, but I haven't yet had the time to actually get it done. I would like to use a provided exception list and, if one is not provided, look for a nested exceptions type. By the way, I don't know if I have said this yet or not, but one of my primary motivations for tinkering around with this in the first place is sheer laziness. I don't like to write more than one catch block if I can absolutely help it. Jeremy