* Extending tagged type with a task
@ 2000-11-16 7:37 Vincent Smeets
2000-11-16 0:00 ` Gerald Kasner
0 siblings, 1 reply; 2+ messages in thread
From: Vincent Smeets @ 2000-11-16 7:37 UTC (permalink / raw)
Hello,
How can I extend a non-limited tagged type with an object of a task
type? I can't change the type A.T to a limited type but B.T may be
limited.
Thanks
--::::::::::::::
--a.ads
--::::::::::::::
package A is
type T is tagged null record;
end A;
--::::::::::::::
--b.ads
--::::::::::::::
with A;
package B is
task type B_Task_T;
type T is new A.T with
record
B_Task : B_Task_T;
end record;
end B;
-- Vincent Smeets Competence Center Informatik GmbH
-- Tel. : +49-5931-805461 Postfach 1225
-- Fax : +49-5931-805175 49702 Meppen, Germany
-- EMail: Vincent.Smeets@CCI.de http://www.CCI.de/
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^ permalink raw reply [flat|nested] 2+ messages in thread* Re: Extending tagged type with a task
2000-11-16 7:37 Extending tagged type with a task Vincent Smeets
@ 2000-11-16 0:00 ` Gerald Kasner
0 siblings, 0 replies; 2+ messages in thread
From: Gerald Kasner @ 2000-11-16 0:00 UTC (permalink / raw)
Vincent Smeets schrieb:
>
> Hello,
>
> How can I extend a non-limited tagged type with an object of a task
> type? I can't change the type A.T to a limited type but B.T may be
> limited.
>
> Thanks
>
> --::::::::::::::
> --a.ads
> --::::::::::::::
> package A is
>
> type T is tagged null record;
>
> end A;
> --::::::::::::::
> --b.ads
> --::::::::::::::
> with A;
> package B is
>
> task type B_Task_T;
>
> type T is new A.T with
> record
> B_Task : B_Task_T;
> end record;
>
> end B;
>
> -- Vincent Smeets Competence Center Informatik GmbH
> -- Tel. : +49-5931-805461 Postfach 1225
> -- Fax : +49-5931-805175 49702 Meppen, Germany
> -- EMail: Vincent.Smeets@CCI.de http://www.CCI.de/
> -- PGP fingerprint: 53 1C 3B 6F B6 9A EB 83 B4 7E 25 08 78 BD 5C 2C
I would use a pointer to the task:
with A;
package B is
task type B_Task_T;
type b_task_ptr is access B_Task_T;
type T is new A.T with
record
B_Task : B_Task_ptr;
end record;
end B;
Gerald
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