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=-0.3 required=5.0 tests=BAYES_00, REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,ad06d2d7cb045687 X-Google-NewGroupId: yes X-Google-Attributes: gida07f3367d7,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII Received: by 10.68.238.198 with SMTP id vm6mr4570526pbc.3.1328267392437; Fri, 03 Feb 2012 03:09:52 -0800 (PST) Path: lh20ni255552pbb.0!nntp.google.com!news1.google.com!goblin3!goblin.stu.neva.ru!usenet.pasdenom.info!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: Silly and stupid post-condition or not ? Date: Fri, 3 Feb 2012 12:09:10 +0100 Organization: cbb software GmbH Message-ID: References: <82wr86fzos.fsf@stephe-leake.org> <5af407fc-2868-44ca-84d2-c51a2a64104d@o4g2000pbc.googlegroups.com> <82k445fu9n.fsf@stephe-leake.org> <1q29nqwr7e7u4.1qrz4gd6twxim.dlg@40tude.net> Reply-To: mailbox@dmitry-kazakov.de NNTP-Posting-Host: FbOMkhMtVLVmu7IwBnt1tw.user.speranza.aioe.org Mime-Version: 1.0 X-Complaints-To: abuse@aioe.org User-Agent: 40tude_Dialog/2.0.15.1 X-Notice: Filtered by postfilter v. 0.8.2 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 8bit Date: 2012-02-03T12:09:10+01:00 List-Id: On Fri, 03 Feb 2012 10:48:34 +0100, Yannick Duch�ne (Hibou57) wrote: > Le Fri, 03 Feb 2012 10:12:25 +0100, Dmitry A. Kazakov > a �crit: >> In the OP example, >> Format_Error of unspecified semantics is to be used heavily. > > Format_Error as a specified semantic: Error. Which turns to disallow any > access to any parsed Instance. If that is *the semantics* then the prostcondition is Result.Status = Format_Error => Result.Instance raise Constraint_Error which is of Ada's variant record type. Are you designing compiler tests? -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de