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From: dewar@cs.nyu.edu (Robert Dewar)
Newsgroups: comp.lang.ada
Subject: Re: SGI inheriting C++ classes ...
Date: 19 Nov 1994 02:12:28 -0500
Organization: Courant Institute of Mathematical Sciences
Message-ID: <3ak8gs$uh@gnat.cs.nyu.edu>
References: <2ECBCF25@SMTPGATE2.STRATCOM.AF.MIL>
NNTP-Posting-Host: gnat.cs.nyu.edu
Date: 1994-11-19T02:12:28-05:00
List-Id: <comp.lang.ada>

"Did SGI demonstrate ..."

GNAT supports fully interoperable dispatching and inheritance between GNAT
Ada and C++. FOr example, you can import a C++ class, then extend it on
the Ada side, using dynamic dispatching with it, and then reexport the
extended version back to C++. THe interface is procedurable allowing
customization for all C++ compilers we know about.

SGI has written an automatic binding generator that uses the GNAT features
(consisting of a set of specialized pragmas) to generate Ada bindings from
C++.

The demo at Tri-Ada involved the semi-automatic translation of some 40,000
lines of C++ headers from the inventor toolset. The actual demo was a 200
line main program, driving, via about 30,000 lines of generated CAda
bindings, an existing C++ code to implement the Puck game.

It's all in a quite preliminary stage, and this was definitely a demo, but
GI fully intends to develop this capabality.

P.S. the invenrot demo was completed in a period of 4 days.