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-- F390A00.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 file declares the root type and primitive subprograms of an

--      alert system abstraction, to be used for tests covering tagged

--      types and type extensions.

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--      04 Jun 96   SAIC    ACVC 2.1: Added pragma Elaborate for Ada.Calendar.

--

--!

with Ada.Calendar;

pragma Elaborate (Ada.Calendar);

package F390A00 is  -- Alert system abstraction.

   -- Declarations used by component Display_On and procedure Display.

   type Device_Enum      is (Null_Device, Teletype, Console, Big_Screen);

   type Display_Counters is array (Device_Enum) of Natural;

   Display_Count_For : Display_Counters := (others => 0);

   -- Declarations used by component Arrival_Time.

   Default_Time : constant Ada.Calendar.Time :=

                    Ada.Calendar.Time_Of (1901, 1, 1);

   Alert_Time   : constant Ada.Calendar.Time :=

                    Ada.Calendar.Time_Of (1991, 6, 15);

   type Alert_Type is tagged record                   -- Root tagged type.

      Arrival_Time : Ada.Calendar.Time := Default_Time;

      Display_On   : Device_Enum   := Null_Device;

   end record;

   procedure Display (A : in Alert_Type);             -- To be inherited by

                                                      -- all derivatives.

   procedure Handle (A : in out Alert_Type);          -- To be overridden by

                                                      -- all derivatives.

end F390A00;

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

package body F390A00 is  -- Alert system abstraction.

   procedure Display (A : in Alert_Type) is

   begin

      Display_Count_For (A.Display_On) := Display_Count_For (A.Display_On) + 1;

   end Display;

   procedure Handle (A : in out Alert_Type) is

   begin

      A.Arrival_Time := Alert_Time;

      Display (A);

   end Handle;

end F390A00;