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From: wojtek@power.com.pl (Wojtek Narczynski)
Newsgroups: comp.lang.ada
Subject: Re: Prefix to 'ACCESS must either statically match... But why?
Date: 27 Jan 2003 18:51:20 -0800
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"James S. Rogers" <jimmaureenrogers@worldnet.att.net> wrote in message news:<PriZ9.6187$rq4.561874@bgtnsc05-news.ops.worldnet.att.net>...

> If you want to use a more general access to string try using an access
> to an unbounded string. See the following:

Uhm, I switched to String from Stream_Element_Array because the old
GNAT code example used it. In my project there is something like this:

 subtype Content_Length_Type is 
    Stream_Element_Count range 0 .. 2 ** 16 - 1;
 subtype Padding_Length_Type 
    is Stream_Element_Count range 0 .. 2 ** 8 - 1;

 type Content_Type
    ( Content_Length : Content_Length_Type; 
    Padding_Length : Padding_Length_Type ) 
 is record    
   Content : aliased Stream_Element_Array( 1..Content_Length );
   case Padding_Length is
      when 0 => null;
      when others => Padding : Stream_Element_Array( 1..Padding_Length
);
   end case;       
 end record;


First I read a header with Content_Length and Padding_Length from
socket, then I use declare to read the actual content in another
syscall.

Then I wanted to pass the access to Content to a function that accepts
access Stream_Element_Array as its parameter. Looks like this cannot
be done though.

And in general I find the inablility to declare access type subtypes
in parallel with the subtypes for the designated type obstructive.

Thanks,
Wojtek