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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Subject: Re: Howto read line from a stream
Newsgroups: comp.lang.ada
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Date: Sun, 31 May 2009 18:07:12 +0200
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On Sun, 31 May 2009 08:38:57 -0700 (PDT), sjw wrote:

> On May 31, 12:34�pm, "Dmitry A. Kazakov" <mail...@dmitry-kazakov.de>
> wrote:
> 
>> One potential problem with using Streams as an interface to sockets is that
>> there is nothing in the Ada standard that mandates Stream_Element to be an
>> octet of bits, as socket I/O demands.
> 
> Can't imagine what reason an implementer would have to make a stream
> element anything other than an octet! (for any general-purpose
> processor you'd actually be likely to come across).

This is a question you should better address to the designers of the Ada
standard. For some reasons they didn't take the responsibility to mandate
that Stream_Element'Size = 8.

I am not a language lawyer, but I remember a DSP processor with
sizeof(char)=4.

I suggest that it should be difficult quite there to have:

   type Stream_Element_Array is
        array(Stream_Element_Offset range <>) of aliased Stream_Element;

(note *aliased*), with 8 bit Stream_Element and packed
Stream_Element_Array.

Honestly, I have no idea how socket library should function there (I don;t
remember if it had any). Probably it extended and truncated each octet.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de