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From: gpriv@axonx.com
Newsgroups: comp.lang.ada
Subject: Re: Prohibiting dynamic allocation for the given type
Date: Wed, 19 Mar 2008 06:13:16 -0700 (PDT)
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Date: 2008-03-19T06:13:16-07:00
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On Mar 19, 4:24 am, Maciej Sobczak <see.my.homep...@gmail.com> wrote:
> On 19 Mar, 04:06, gp...@axonx.com wrote:
>
> > Ada is high level language
>
> That does not matter.
> Ada is a high level language, but still provides two ways to create an
> object:
>
> X : Type;
> Y : Type_Ptr := new Type;
>
> If these two methods are available, then apparently there is a
> difference between them and this difference is not in *where* objects
> are created, but *how long* they are allowed to live.
>
> The high-level part of Ada can hide the "where" part, but not "how
> long".
>
> For some types I might want to prohibit one of these two ways of
> object creation.
>
> Prohibiting the first one is easy with limited types that have unknown
> discriminants + factory functions that return pointers.
>
> Prohibiting the second one seems to be impossible.
> For me this is a limitation.
>
> > What's wrong with good old comments atop of type declaration.
>
> What's wrong with C with good comments? :-)

Nothing..

>
> > But if you insist you may do run-time check by
> > defining custom Storage_Pool pool for your object
>
> Storage_Pool is a property of the pointer, not the type.

Are you asking for solutions or simply trolling?

>
> --
> Maciej Sobczak *www.msobczak.com*www.inspirel.com