Message du 22/03/11 20:18 De : "Krzysztof Czainski" <1czajnik@gmail.com> A : boost@lists.boost.org Copie à : Objet : Re: [boost] [inspect] exceptions (FW: [Boost-users] no exceptions)
2011/3/22 Emil Dotchevski
Why use BOOST_THROW_EXCEPTION to throw?
- Typically, there is no need to do anything else to support BOOST_NO_EXCEPTIONS builds;
- Enables boost::exception_ptr, so the exceptions you throw can be transported between threads;
- Enables boost::error_info, so users can attach stuff to exceptions.
- Enables better messages from boost::diagnostic_information.
+1
What about boost/detail/no_exceptions_support.hpp? Could that file be moved to boost/exception for public use? I use it, but don't feel comfortable with it being in the detail directory.
+1 As BOOST_THROW_EXCEPTION is not enough to support BOOST_NO_EXCEPTIONS builds. These macros clearly help to achieve this goal. Best, Vicente Example of use from the file: void foo() { BOOST_TRY { ... } BOOST_CATCH(const std::bad_alloc&) { ... BOOST_RETHROW } BOOST_CATCH(const std::exception& e) { ... } BOOST_CATCH_END } With exception support enabled it will expand into: void foo() { { try { ... } catch (const std::bad_alloc&) { ... throw; } catch (const std::exception& e) { ... } } } With exception support disabled it will expand into: void foo() { { if(true) { ... } else if (false) { ... } else if (false) { ... } } }