From: ganesh.ramasivan@gdcanada.com (Ganesh Ramasivan)
Subject: Variant records..
Date: 15 Feb 2004 14:51:30 -0800
Date: 2004-02-15T14:51:30-08:00 [thread overview]
Message-ID: <e8f9995c.0402151451.5bbe03de@posting.google.com> (raw)
In the following example, how would i forbid the user of data type Foo
from specifying the following:
John : Foo(Vehicle => MAN, Power => AUTOMATIC);
ie. is there a way to restrict the user from specifying certain types
as variants?
Thanks for your input.
Ganesh
Example:
procedure Variant is
type Vehicle_Type is (CAR, LEGS, BIKE, PLANE);
type Vehicle_Power is (MANUAL, AUTOMATIC);
type Foo(Vehicle : Vehicle_Type; Power: Vehicle_Power) is
record
case Vehicle is
when CAR =>
null;
when LEGS =>
null;
when BIKE =>
null;
when PLANE =>
null;
when others =>
null;
end case;
end record;
Audi : Foo(Vehicle => CAR, Power => MANUAL);
begin
null;
end Variant;
next reply other threads:[~2004-02-15 22:51 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-02-15 22:51 Ganesh Ramasivan [this message]
2004-02-16 10:57 ` Variant records Preben Randhol
2004-02-16 15:25 ` Ganesh Ramasivan
2004-02-16 15:46 ` Ludovic Brenta
2004-02-16 16:16 ` Preben Randhol
2004-02-17 14:37 ` Ganesh Ramasivan
2004-02-17 15:43 ` Preben Randhol
2004-02-16 16:59 ` Ganesh Ramasivan
2004-02-16 20:14 ` Simon Wright
2004-02-17 14:56 ` Ganesh Ramasivan
2004-02-17 15:31 ` Robert I. Eachus
2004-02-16 23:17 ` tmoran
-- strict thread matches above, loose matches on Subject: below --
1999-09-14 0:00 Variant Records Shawn Barber
1999-09-14 0:00 ` Mark Lundquist
1999-09-14 0:00 ` David C. Hoos, Sr.
1999-09-14 0:00 ` Matthew Heaney
1986-10-31 9:08 variant records Dean Luick
1986-11-03 14:17 ` Bev Sobelman
1986-11-05 16:35 ` stuart
1986-11-06 15:40 ` stt
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