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-- FC51D00.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 defines a generic list abstraction. List elements can

--      be of any (nonlimited) type. Lists are implemented as arrays of

--      pointers and are only two elements in length.

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--

--!

generic

   type Element_Type (<>) is private;

package FC51D00 is  -- This package simulates a generic list abstraction.

   -- The definition of List_Type below is purely artificial; its validity

   -- in the context of the abstraction is irrelevant to the feature being

   -- tested.

   type Element_Ptr is access Element_Type;

   subtype List_Size is Natural range 1 .. 2;

   type List_Type is array (List_Size) of Element_Ptr;

   function  View_Element (I : List_Size; L : List_Type) return Element_Type;

   procedure Write_Element (I : in     List_Size;

                            L : in out List_Type;

                            E : in     Element_Type);

   -- ... Other list operations for Element_Type.

end FC51D00;

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

package body FC51D00 is

   -- The implementations of the operations below are purely artificial; the

   -- validity of their implementations in the context of the abstraction is

   -- irrelevant to the feature being tested.

   function View_Element (I : List_Size; L : List_Type) return Element_Type is

   begin

      return L(I).all;

   end View_Element;

   procedure Write_Element (I : in     List_Size;

                            L : in out List_Type;

                            E : in     Element_Type) is

   begin

      L(I) := new Element_Type'(E);

   end Write_Element;

end FC51D00;