On Saturday, 27 September 2014 at 09:53:37 UTC, Jacob Carlborg
wrote:
On 2014-09-23 19:37, Andrei Alexandrescu wrote:
We need a libunwind expert to figure out a good approach for
handling
exceptions thrown by C++ code into D.
BTW, are you only interested in handling C++ exception, or are
you interested in handling D exceptions in C++ as well?
Ideally D should just use the same exception mechanism as C++.
I don't think a language change is necessary for this. Changes
in the compiler, yes, but hopefully not in the language.
C++ exception mechanism uses C++ type_info objects. We can
inherit object.Throwable from std::exception (through extern(C++)
interface), override the what() method, but there are no way to
generate C++ type_info for D class now. If we want to do a
compiler support of C++ exceptions, we should implement and
support another one non-standartized feature: type_info. BTW it
allows to do dynamic_cast over C++ classes in D, but I think,
nobody approve this suggestion, because it can be hard).
