C++ and Ada.

[Daniel Lundqvist]

Robert Dewar wrote:
> Daniel Lundqvist wrote:
> 
>> Hi,
>>
>> I've been toying around with Ada lately. Trying to add Ada bindings to 
>> a C++ library. Almost everything works perfect except one thing.
>> I can't seem to import classes without virtual tables.
>>
>> Pragma CPP_Constructor seem to require tagged types. And if I mark the 
>> type tagged Pragma CPP_Class needs it to have a Vtable_Ptr field. But 
>> then gnats idea of how class looks like isn't correct.
> 
> Right, with the current implementation, you can't import a class without
> a virtual table as a tagged type (you could of course import it as a
> normal Ada record).

If I import it as a normal ADA record I can't use constructors,right?

And there is no way of using CPP_Constructor with a non tagged type?

> As it turns out, we are starting to take another look at the whole
> CPP pragma support, with an eye also on the new Interfaces feature
> of Ada 95. We are preparing an initial discussion document on an
> implementation approach for Interfaces, which we will post on this
> list for discussion when it is ready. Our initial thought is to try
> to make the implementation of Interfaces as compatible as possible
> with the g++ MI model.

Any timeline on this?

With this new pragma support will there be any work to eliminate the 
need for manually specifying C++ mangled symbol names? If that is possible.

Is this document available anywhere? Would be interesting to read of 
what will come.

Thanks in advance,
Daniel.