Antony Polukhin wrote:
template <typename T> inline std::string type_name() { #ifndef BOOST_NO_TYPEID return type_name_detail::demangle_impl<T>::apply(); #else return BOOST_CURRENT_FUNCTION; #endif }
When RTTI disabled, you are returning whole function name, not just the required type T. In your case you`ll get somethihg like ‘std::string boost::type_name() [with T = const int&, std::string = std::basic_string<char>]’ instead of 'const int&'.
On VC++ with /GR option, we can still use `typeid` (though we cannot use it to obtain the dynamic type of polymorphic types). But, yeah, we get the whole function names if BOOST_CURRENT_FUNCTION is used. Now I understand what you're trying to do and I'm definitely interested in it! If there is a reliable way to extract type names from BOOST_CURRENT_FUNCTION, this is very useful. Clang-3.1 has gcc-like __PRETTY_FUNCTION__. But, on clang-3.0 and the prior versions, __PRETTY_FUNCTION__ is less usefull. It does not contain type names of template arguments for function templates. So we have to extract type names from function arguments: template <typename T> const char * f() { return BOOST_CURRENT_FUNCTION; } template <typename T> const char * g(const T&) { return BOOST_CURRENT_FUNCTION; } f<int>() --> const char *f() g(0) --> const char *g(const int &) Thanks for interesting stuff, Antony! Regards, Michel