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From: mheaney@ni.net (Matthew Heaney)
Subject: Re: limited/non-limited in Ada95
Date: 1997/10/18
Message-ID: <mheaney-ya023680001810971645020001@news.ni.net>#1/1
X-Deja-AN: 282348488
References: <3442C2A3.3781@bix.com>
 <mheaney-ya023680001610972221540001@news.ni.net>
 <ufhgaghueo.fsf@synquiry.com>
 <3449390f.142507@SantaClara01.news.InterNex.Net>
Organization: Estormza Software
Newsgroups: comp.lang.ada
Date: 1997-10-18T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <3449390f.142507@SantaClara01.news.InterNex.Net>, tmoran@bix.com
(Tom Moran) wrote:

>>important capabilities of limited types
>The one that bit me most recently was that you can't have access
>values as discriminants of non-limited types.

Yeah, a pain, but will this work?

type DT is ...;
type DT_Access is access all DT;

type T (D : DT_Access) is private;

You can then use Unchecked_Access:

declare
   D : aliased DT;
   O : T (D'Unchecked_Access);
begin

Will that do what you want?

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Matthew Heaney
Software Development Consultant
<mailto:matthew_heaney@acm.org>
(818) 985-1271