Re: A copy question....

["David Botton" <David@Botton.com>]

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.