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=1.0 required=5.0 tests=BAYES_20,FORGED_GMAIL_RCVD,
	FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4
X-Google-Thread: 103376,7b207d193114a9
X-Google-Attributes: gid103376,public,usenet
X-Google-Language: ENGLISH,ASCII-7-bit
Path: 
 g2news1.google.com!postnews.google.com!s13g2000prd.googlegroups.com!not-for-mail
From: Eric Hughes <eric.eh9@gmail.com>
Newsgroups: comp.lang.ada
Subject: Re: Partial type specifications and their ordering
Date: Mon, 17 Mar 2008 16:20:53 -0700 (PDT)
Organization: http://groups.google.com
Message-ID: 
 <69ab5218-3e81-4146-ad88-70ade8eb7059@s13g2000prd.googlegroups.com>
References: 
 <f2c01e91-8795-44af-869c-17c936553907@e10g2000prf.googlegroups.com>
NNTP-Posting-Host: 166.70.57.218
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-Trace: posting.google.com 1205796053 29851 127.0.0.1 (17 Mar 2008 23:20:53
 GMT)
X-Complaints-To: groups-abuse@google.com
NNTP-Posting-Date: Mon, 17 Mar 2008 23:20:53 +0000 (UTC)
Complaints-To: groups-abuse@google.com
Injection-Info: s13g2000prd.googlegroups.com; posting-host=166.70.57.218;
	posting-account=5RIiTwoAAACt_Eu87gmPAJMoMTeMz-rn
User-Agent: G2/1.0
X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
 rv:1.8.1.12)
	Gecko/20080201 Firefox/2.0.0.12,gzip(gfe),gzip(gfe)
Xref: g2news1.google.com comp.lang.ada:20460
Date: 2008-03-17T16:20:53-07:00
List-Id: <comp.lang.ada>

P.S.

To implement this, I'd use two new keywords:
-- "partial", to annotate any non-complete declaration
-- "satisfies", to require that an ordering relationship be present

To forestall some easy questions:
-- All inheritance gives rise to satisfaction relationships.
-- Not all satisfaction relationships are expressible as inheritance.

Eric