From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,LOTS_OF_MONEY
	autolearn=ham autolearn_force=no version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,18a1da27baade824
X-Google-Attributes: gid103376,public
X-Google-ArrivalTime: 2001-10-16 18:14:16 PST
Path: 
 archiver1.google.com!news1.google.com!sn-xit-02!sn-post-02!sn-post-01!supernews.com!corp.supernews.com!not-for-mail
From: "David Botton" <David@Botton.com>
Newsgroups: comp.lang.ada
Subject: Re: A copy question....
Date: Tue, 16 Oct 2001 21:14:11 -0400
Organization: Posted via Supernews, http://www.supernews.com
Message-ID: <tspmr59b61e391@corp.supernews.com>
References: <2d87db3f.0110160209.4c6f55c2@posting.google.com>
 <t74z7.24114$gT6.15011939@news1.rdc1.sfba.home.com>
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 5.50.4807.1700
X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4807.1700
X-Complaints-To: newsabuse@supernews.com
Xref: archiver1.google.com comp.lang.ada:14767
Date: 2001-10-16T21:14:11-04:00
List-Id: <comp.lang.ada>

I was showing my "favorite" method. The use of the 'Img was part of the test
driver. It is a convenience that I am surprised has not been adopted by
other vendors.

I admit that since most of my Ada programming is with GNAT, I get lazy about
portability to other compilers.

Here is a more universal version:

with Ada.Text_IO; use Ada.Text_IO;

with System.Address_To_Access_Conversions;
with System;

with Interfaces;

procedure Block is

   type My_Array is array (Integer range <>) of Interfaces.Unsigned_32;

   Stuff_In_Memory : My_Array (1 .. 200) := (others => 999);

   Address     : System.Address := Stuff_In_Memory (1)'Address;
   Data_Length : Natural := Stuff_In_Memory'Length;
   -- Assuming of Unsigned_32s

   type The_Array is new My_Array (1 .. Data_Length);
   pragma Pack (The_Array);

   package Array_Copier is
      new System.Address_To_Access_Conversions (The_Array);

   Copied_Array : The_Array := Array_Copier.To_Pointer (Address).all;
begin
   for N in Copied_Array'Range loop
      Put_Line (Interfaces.Unsigned_32'Image (Copied_Array (N)));
   end loop;
end Block;




<tmoran@acm.org> wrote in message
news:t74z7.24114$gT6.15011939@news1.rdc1.sfba.home.com...
>   Speaking of portability,
> >  function To_Pointer_To_The_Array is
> >     new Ada.Unchecked_Conversion (System.Address, Pointer_To_The_Array);
> is not portable, while
> package System.Address_To_Access_Conversions
> is specifically designed to do what you want.
> > Put_Line (Copied_Array (N)'Img);
>   The 'Img attribute is a "vendor special", 'Image would be portable.