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=-1.3 required=5.0 tests=BAYES_00,INVALID_MSGID autolearn=no autolearn_force=no version=3.4.4 X-Google-Language: ENGLISH,ASCII-7-bit X-Google-Thread: 103376,989d8fbfea6cca1b X-Google-Attributes: gid103376,public From: castroto@remus.rutgers.edu (Fabrizio Castrotorres) Subject: Re: Passing a function "pointer" Date: 1998/05/26 Message-ID: <6kf2fc$aqg$1@remus.rutgers.edu>#1/1 X-Deja-AN: 356711031 References: <3567CBEB.3098@mpce.mq.edu.au> Organization: Rutgers University LCSR Newsgroups: comp.lang.ada Date: 1998-05-26T00:00:00+00:00 List-Id: Could you not use a function that takes as an argument a generic function ? If this is all you need to do a generic function argument should do the trick. matthew_heaney@acm.org (Matthew Heaney) writes: >In article <3567CBEB.3098@mpce.mq.edu.au>, Brendan Reville > wrote: >>I need to pass a "pointer" (access type?) to a procedure, to another >>procedure. The second procedure will then call the first using this >>pointer. How exactly can I do this? Do I need to create an access type >>to a procedure?? (I'm mainly not sure about the syntax...) >Ada is described in terms in BNF in the RM; you may have learned how to >learn BNF in your compiler class or something. >Follow the syntax as it appears in the RM. The description of access types >is in section 3.10. >Here are a couple of examples: >type Procedure_Access is access procedure (I : in Integer); >type Function_Access is access function (I : Integer) return Float; >>Actually, I also need to do this, not for a normal procedure, but for a >>task's entry point. Can I pass a "pointer" to a task's entry point? >>Again, exactly how? >I'm not sure you can do that. You may have to call a wrapper procedure, >that in turn calls the task entry. >>Thanks heaps. I'm doing Ada for an honours course, and just wasn't sure >>how to do these things. >You need to read the RM. Copies are available on-line if you don't have a >hard-copy. >