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From: "Martin Dowie" <martin.dowie@btopenworld.com>
Newsgroups: comp.lang.ada
Subject: Re: A couple of questions
Date: Sun, 2 May 2004 10:48:19 +0000 (UTC)
Organization: BT Openworld
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Date: 2004-05-02T10:48:19+00:00
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"Georg Bauhaus" <sb463ba@l1-hrz.uni-duisburg.de> wrote in message
news:c72d27$cpo$1@a1-hrz.uni-duisburg.de...
> There is an Ada Issue (288) discussing pragmas Pre_Assert,
> Classwide_Pre_Assert, and Post_Assert for inclusion in the next
> standard. They formalise DbC for future Ada programs.
>
> The names have been changed from Precondition and Postcondition,
> unfortunatly, falling short of customary Ada names' quality in my view.

These are not going to be in the next language revision - they are
"No Action". The "Assert" pragma is however going to make it, so
I guess you could make an arguement that the user can mimic pre
and post conditions them selves, with some disapline, e.g.

procedure Foo is
begin
   pragma Assert (<some_pre_condition>);
   -- whatever Foo does
   pragma Assert (<some_post_condition>);
end Foo;

-- Martin