Re: Question of data type

["Steve Doiel" <nospam_steved94@attbi.com>]

"Bigg K" <bigg_k@mailandnews.com> wrote in message
news:3c8ff5df$1_7@news3.uncensored-news.com...
> I'm using Rational Apex 3.2.0b.  (I don't have a choice in the matter.)
>
> My question:
>
> X is a record.  If I want to assign X'Address to Y, what data type
(integer,
> float, etc) does Y have to be?
>

On the odd chance that you're coming to Ada from the C world, there are (at
least) two possible answers for this question.

The first answer:

  You say that X is a record,  assume that record is of type T.

If you want to have a data type that permits you to reference records of
type T, you can define a new type:

  type TA is access all T;

And then declare an access variable (similar to a typed pointer in C)

  taccess : TA;

In order to permit the value in X to be referenced by an access type you
must declare X as aliased:

  X : aliased T;

Then you can do the assignment

  taccess := X'ACCESS;

The second answer:
If you want to get the equivalent to C's void pointer, the type of the
pointer would be System.Address.  That is

  P : System.Address;

  P := X'Address;

I hope this helps,

SteveD

> Thanks for your help...
>
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