Re: Ada grammar

["Samuel T. Harris" <samuel_t_harris@Raytheon.com>]

Pascal Obry wrote:
> 
> Ted Dennison <dennison@telepath.com> a écrit dans le message :
> 8f6lem$acm$1@nnrp1.deja.com...
> > In article <8f6cgt$vuq$1@nnrp1.deja.com>,
> >   Robert Dewar <robert_dewar@my-deja.com> wrote:
> > > In article <004d942d.2e326cd2@usw-ex0104-026.remarq.com>,
> > >   bradders <bradNObrSPAM@england.com.invalid> wrote:
> > > > My company produces a UML based Real-time modelling tool. We
> > > > generate and reverse engineer code for C, C++ and Java and
> > > soon
> > > > we will be supporting Ada 95. Basically I need to be able to
> > > > Parse Ada code to build up a symbol table and populate a class
> > > > model.
> > >
> > > It seems like you would do much better to use ASIS for this
> > > purpose, no?
> >
> > Only if all Ada 95 compilers support that (they don't).
> >
> 
> Sure but ASIS has been designed for that! If more tools were based on ASIS
> it will put the pressure on Ada compiler writers to offer a decent ASIS
> layer :)

ASIS based tools which I have put together to support our
work efforts are becoming so valuable to our development
efforts that ASIS is a stringent requirement for any
development compiler under consideration.

One also must consider that the requirements for a development
environment are separate from the requirements for a target
compiler. A development environment needs many bells and
whistles for aid the developer where-as a target compiler
need only produce efficient code in a reasonable amount
of time with adequate debugging support.

Here, our development environment is Rational Apex and
our target compiler is VADS. I only need ASIS for Apex.
I don't need it for VADS.

Indeed, I used to work on a project using a Rational R1000
for development and two separate target compilers (Alsys
for PCs and VADS for ATT 3B2s).

So, if your target compilers does not support ASIS, then
why not bring in one which does. Since GNAT with ASIS can
be used at no cost, it seems an appropriate vehicle to
gain the ASIS support you need. Once you get used to the
delineation between development work and target work then
it really is not the problem such a separation may appear
to involve.

> 
> Pascal.
> 

-- 
Samuel T. Harris, Principal Engineer
Raytheon, Aerospace Engineering Services
"If you can make it, We can fake it!"