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-- FC51C00.A

--

--                             Grant of Unlimited Rights

--

--     Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,

--     F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained

--     unlimited rights in the software and documentation contained herein.

--     Unlimited rights are defined in DFAR 252.227-7013(a)(19).  By making

--     this public release, the Government intends to confer upon all

--     recipients unlimited rights  equal to those held by the Government.

--     These rights include rights to use, duplicate, release or disclose the

--     released technical data and computer software in whole or in part, in

--     any manner and for any purpose whatsoever, and to have or permit others

--     to do so.

--

--                                    DISCLAIMER

--

--     ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR

--     DISCLOSED ARE AS IS.  THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED

--     WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE

--     SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE

--     OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A

--     PARTICULAR PURPOSE OF SAID MATERIAL.

--*

--

-- FOUNDATION DESCRIPTION:

--      This foundation declares a hierarchy of tagged types, which includes

--      both abstract and non-abstract types, and which have both abstract

--      and non-abstract primitive subprograms.

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--      03 Nov 95   SAIC    ACVC 2.0.1 fixes: Deleted primitive operation Proc

--                          of Concrete_Root.

--      11 Aug 96   SAIC    ACVC 2.1: Changed procedure bodies to update

--                          actual parameters.

--

--!

package FC51C00 is

--

-- Non-abstract ultimate ancestor type:

--

   type Concrete_Root is tagged null record;

   function Func (P: Concrete_Root) return Concrete_Root;    -- Abstract when

                                                             -- inherited.

--

-- Abstract descendant of non-abstract ultimate ancestor:

--

   type Abstract_Child is abstract new Concrete_Root with null record;

   -- Inherits:

   -- function Func (P: Abstract_Child) return Abstract_Child is abstract;

   procedure Proc (P: in out Abstract_Child) is abstract;    -- Abstract.

   procedure New_Proc (P : out Abstract_Child) is abstract;  -- Abstract.

--

-- Non-abstract descendant of abstract descendant:

--

   type Concrete_GrandChild is new Abstract_Child with null record;

   function Func (P: Concrete_GrandChild) return Concrete_GrandChild;

   procedure Proc (P: in out Concrete_GrandChild);

   procedure New_Proc (P : out Concrete_GrandChild);

end FC51C00;

     --===================================================================--

package body FC51C00 is

   Value : Concrete_GrandChild;

   function Func (P: Concrete_Root) return Concrete_Root is

   begin

      return P;

   end Func;

   function Func (P: Concrete_GrandChild) return Concrete_GrandChild is

   begin

      return P;

   end Func;

   procedure Proc (P: in out Concrete_GrandChild) is

   begin

      P := Value;

   end Proc;

   procedure New_Proc (P : out Concrete_GrandChild) is

   begin

      P := Value;

   end New_Proc;

end FC51C00;