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From: amado.alves@gmail.com
Newsgroups: comp.lang.ada
Subject: Re: Self pointer in limited record
Date: Mon, 10 Sep 2007 16:27:50 -0000
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Date: 2007-09-10T16:27:50+00:00
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> > > ... I wish this were
> > > possible myself. Or more simply:
>
> > > type T is -- limited or not
> > >    Self : access T := T'Unchecked_Access;
> > >    ...
> > > end; (Marius)
>
> > T cannot be non-limited, because otherwise passing it by copy would make
> > rubbish out of Self. In any case it would make little sense if not access
> > T'Class. (Kasakov)
>
> Sure it can... (Randy)

Yes, now the compiler is accepting this (and letting me copy objects,
and, yes, getting rubbish in Self). I have no idea why it was not
compiling before. It just wasn't. And the messages indicated trouble
in the type. So, and because I know that Ada is a very sensitive lady,
I jumped to the (wrong) conclusion that the thing was illegal.

/*
FWIW, the problem was the following. I am writing a library. I wanted
to provide a function to the user to allow him to specify the parent
of an object in a simple way e.g.
  Parent_Object : Object := Lookup (Name = "foo foo");
  Object : Object := Create (Name => "bla bla", Parent =>
Parent_Object);

The idea was to have a clean profile like
   Create (Name : String; Parent : Object);
instead of
   Create (Name : String; Parent : access Object);

Inside the function there is code like
   New_Object.Parent := Parent.Self; -- (clean profile)
or
   New_Object.Parent := Parent; -- ('dirty' profile)

I am kind of redesigning the library now so these issues are yet in
flux.
*/