From: Robert A Duff <bobduff@world.std.com>
Subject: Re: scripting/extension language for Ada (we have an opportunity here)
Date: 2000/02/16
Date: 2000-02-16T00:00:00+00:00 [thread overview]
Message-ID: <wccputwc1ft.fsf@world.std.com> (raw)
In-Reply-To: 38AAF0C1.C3F82C40@Raytheon.com
"Samuel T. Harris" <samuel_t_harris@Raytheon.com> writes:
>... So I don't need syntax non-terminals
> such as function_call_or_array_index_or_qualified_aggregate
> with all the complexity involved. The semantics
> still have to verify the appropriate nature of
> the element.
>
> Given this, I believe you would agree that the substitution
> of () for [] and {} would now be trivial.
Yes.
But the simplification of the grammar is fairly minor, when compared
with the complexity of overload resolution.
There may be good and bad things about "[", but I wouldn't say "["
greatly simplifies the compiler/interpreter, as you've defined it.
By the way, aggregates (qualified or not) can be syntactically
distinguished from function calls and whatnot. The aggregate issue is
the potential confusion between a parenthesized expression and a
one-element positional aggregate. (I consider it a design flaw in Ada
that there are no one-element and zero-element positional aggregates.
But with you're "trivial substitution" model, you can't solve that
problem.)
- Bob
next prev parent reply other threads:[~2000-02-16 0:00 UTC|newest]
Thread overview: 80+ messages / expand[flat|nested] mbox.gz Atom feed top
2000-01-27 0:00 tagged types extensions - language design question Vladimir Olensky
2000-01-27 0:00 ` Fraser
2000-01-27 0:00 ` Laurent Guerby
2000-01-28 0:00 ` Vladimir Olensky
2000-01-28 0:00 ` Andy
2000-01-28 0:00 ` Vladimir Olensky
2000-01-29 0:00 ` Andy
2000-01-31 0:00 ` Vladimir Olensky
2000-01-27 0:00 ` Matthew Heaney
2000-01-27 0:00 ` Charles Hixson
2000-01-28 0:00 ` Vladimir Olensky
2000-01-28 0:00 ` Matthew Heaney
2000-01-28 0:00 ` Charles Hixson
2000-01-28 0:00 ` Matthew Heaney
2000-02-01 0:00 ` Charles Hixson
2000-02-01 0:00 ` Matthew Heaney
2000-01-29 0:00 ` Vladimir Olensky
2000-01-29 0:00 ` Matthew Heaney
2000-01-31 0:00 ` Vladimir Olensky
2000-01-31 0:00 ` Matthew Heaney
2000-01-31 0:00 ` Vladimir Olensky
2000-01-29 0:00 ` Matthew Heaney
2000-01-28 0:00 ` Tucker Taft
2000-01-31 0:00 ` Vladimir Olensky
2000-02-01 0:00 ` Charles Hixson
2000-02-01 0:00 ` Matthew Heaney
2000-02-01 0:00 ` Brian Rogoff
2000-02-03 0:00 ` scripting/extension language for Ada (was : Re: tagged types extensions) root
2000-02-03 0:00 ` Brian Rogoff
2000-02-04 0:00 ` Ray Blaak
2000-02-04 0:00 ` Stanley R. Allen
2000-02-04 0:00 ` Samuel T. Harris
2000-02-05 0:00 ` Lionel Draghi
2000-02-05 0:00 ` Samuel T. Harris
2000-02-06 0:00 ` Bryce Bardin
2000-02-08 0:00 ` Samuel T. Harris
2000-02-06 0:00 ` Lionel Draghi
2000-02-05 0:00 ` Lionel Draghi
2000-02-05 0:00 ` Ray Blaak
2000-02-04 0:00 ` Robert A Duff
2000-02-05 0:00 ` Ehud Lamm
2000-02-05 0:00 ` blaak
2000-02-05 0:00 ` Brian Rogoff
2000-02-09 0:00 ` Robert A Duff
2000-02-09 0:00 ` Ted Dennison
2000-02-10 0:00 ` Samuel T. Harris
2000-02-10 0:00 ` Pascal Martin
2000-02-10 0:00 ` Ray Blaak
2000-02-11 0:00 ` scripting/extension language for Ada (we have an opportunity here) Tarjei T. Jensen
2000-02-11 0:00 ` Robert I. Eachus
2000-02-12 0:00 ` Pascal Martin
2000-02-13 0:00 ` Robert I. Eachus
2000-02-16 0:00 ` scripting/extension ... [off topic] Nick Roberts
2000-02-16 0:00 ` Ray Blaak
2000-02-12 0:00 ` scripting/extension language for Ada (we have an opportunity here) Tarjei Tj�stheim Jensen
2000-02-12 0:00 ` Samuel T. Harris
2000-02-14 0:00 ` Robert A Duff
2000-02-15 0:00 ` Samuel T. Harris
2000-02-16 0:00 ` Robert A Duff
2000-02-16 0:00 ` Samuel T. Harris
2000-02-16 0:00 ` Robert A Duff [this message]
2000-02-17 0:00 ` Samuel T. Harris
2000-02-12 0:00 ` root
2000-02-12 0:00 ` Samuel T. Harris
2000-02-12 0:00 ` blaak
2000-02-11 0:00 ` scripting/extension language for Ada (was : Re: tagged types extensions) David Starner
2000-02-12 0:00 ` blaak
2000-02-15 0:00 ` Brian Rogoff
2000-02-12 0:00 ` Pascal Martin
2000-02-14 0:00 ` Robert A Duff
2000-02-05 0:00 ` scripting/extension language for Ada (was : Re: tagged typesextensions) Lionel Draghi
2000-02-05 0:00 ` scripting/extension language for Ada (was : Re: tagged types extensions) Ehud Lamm
2000-02-06 0:00 ` Lionel Draghi
2000-02-06 0:00 ` Ehud Lamm
2000-02-06 0:00 ` scripting/extension language for Ada Terry Westley
2000-02-09 0:00 ` scripting/extension language for Ada (was : Re: tagged types extensions) Robert A Duff
2000-01-31 0:00 ` tagged types extensions - language design question Mark Lundquist
2000-02-01 0:00 ` Vladimir Olensky
2000-02-01 0:00 ` Simon Wright
2000-02-01 0:00 ` Ehud Lamm
replies disabled
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox