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=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!aioe.org!.POSTED!not-for-mail From: "Dmitry A. Kazakov" Newsgroups: comp.lang.ada Subject: Re: changing rules for anonymous access types to named ones Date: Tue, 3 Apr 2018 10:41:10 +0200 Organization: Aioe.org NNTP Server Message-ID: References: NNTP-Posting-Host: MyFhHs417jM9AgzRpXn7yg.user.gioia.aioe.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit X-Complaints-To: abuse@aioe.org User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0 X-Notice: Filtered by postfilter v. 0.8.3 Content-Language: en-US Xref: reader02.eternal-september.org comp.lang.ada:51313 Date: 2018-04-03T10:41:10+02:00 List-Id: On 02/04/2018 23:09, Jean-Claude Rostaing wrote: >> general access type to solve the compilation error: > Yeah, but it's ugly and I won't write "access all" if if I'm not really gonna use a pointer on the stack... > I think it's a compiler issue, as like I said, I found no rules about access types, in the interface issue. Also, the interface are said to be pretty much equivalent to "type blablabla is abstract tagged null record".... Interface = abstract type - representation - bodies of operations There should have been none in this form, just abstract types + multiple inheritance. P.S. Interfaces should be anonymous, e.g. T'Interface, the interface of the type T. So that you could derive from T dropping its representation and implementations of all operations. For example: type My_Custom_Integer is new Integer'Interface with record -- Whatever I see appropriate to represent integer end record; -- overriding all operations, since they are inherited abstract -- Regards, Dmitry A. Kazakov http://www.dmitry-kazakov.de