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Re: PROPOSAL: Objective-C++
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- To: Ziemowit Laski <zlaski at apple dot com>
- Subject: Re: PROPOSAL: Objective-C++
- From: Ovidiu Predescu <ovidiu at cup dot hp dot com>
- Date: Tue, 13 Nov 2001 15:35:33 -0800
- Cc: gcc at gcc dot gnu dot org, discuss-gnustep at gnu dot org,Stan Shebs <shebs at apple dot com>, snaroff at apple dot com
Finally, it's here (well, almost), after all these years! The GNUStep
people have been asking NeXT/Apple for many years to donate the
Objective-C++ front-end to GCC. I'm glad this will eventually happen.
I definitely support this!
Ovidiu Predescu <firstname.lastname@example.org>
http://orion.rgv.hp.com/ (inside HP's firewall only)
http://sourceforge.net/users/ovidiu/ (my SourceForge page)
http://www.geocities.com/SiliconValley/Monitor/7464/ (GNU, Emacs, other stuff)
On Tue, 13 Nov 2001 12:47:00 -0800, Ziemowit Laski <email@example.com> wrote:
> PUTTING OBJECTIVE-C++ INTO GCC 3.x
> As some of you may know, Apple is currently using a customized
> gcc 2.95.2 as its system compiler for Mac OS X. One of the
> Apple additions to its gcc 2.95.2 is a front-end for the
> Objective-C++ language (cc1objplus).
> The Objective-C++ language may be thought of an extension of C++,
> analogously to how Objective-C extends C. The language was
> originally envisioned as an interface technology, enabling users
> to directly invoke Objective-C APIs (such as NeXTStep/GNUStep, or
> Cocoa on Mac OS X) from C++ code -- and vice versa -- without the
> need for C glue code. Needless to say, Objective-C++ is extremely
> useful in this regard, allowing developers to port applications
> to Mac OS X (and other platforms with existing Objective-C
> frameworks) with much more ease.
> To the seasoned programmer :), Objective-C++ provides an opportunity
> to leverage the characteristics of both C++ and Objective-C in the
> same translation unit. The C++ and Objective-C object models
> complement each other quite nicely, allowing programmers to make
> trade-offs between efficiency and type-safety on the one hand, and
> flexibility and dynamism on the other.
> Unfortunately, even though it may be of interest to the outside
> community (e.g., GNUStep users), the existing 2.95.2 version of
> Objective-C++ is not really in a state amenable to integration into
> FSF 2.95.x sources. But . . .
> We are currently working on rolling out gcc 3.x on Mac OS X.
> Obviously, this work will include bringing up the Objective-C++
> 3.x front-end. This time around, however, we would like to
> coordinate its development with the community at large, so
> that the finished (or even evolving) product can become part
> of the FSF tree. Obviously, we will strive to integrate
> Objective-C++ into the FSF tree in such a way that it will
> have minimal impact on those _not_ wishing to use it. :)
> The purpose of this post is twofold. First, we'd like
> to know whether there exists an interest in the community
> for incorporating Objective-C++ capability into FSF gcc 3.x.
> Second, if there _is_ interest, we would like to request
> permission to make one small change to the C++ build
> process _right now_ that would make everyone's life
> easier from then on. The idea is to change gcc/cp/parse.y
> to gcc/cp/cp-parse.in, and then use sed to separate out
> the C++ and Objective-C++ portions of the Yacc file,
> _exactly_ as is presently being done with C and Objective-C.
> The good news about adding Objective-C++ to gcc is that
> very little actual new code will be required! Most of the
> functionality already exists in the cp/ and objc/ folders. :)
> Thanks for reading this. We look forward to hearing from all
> of you.
> Ziemowit Laski Apple Computer, Inc.
> firstname.lastname@example.org 2 Infinite Loop, MS 302-4SN
> +1.408.974.6229 Fax .1344 Cupertino, CA 95014-2085