| -- C3900060.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. |
| --* |
| -- |
| -- OBJECTIVE: |
| -- See C3900063.AM. |
| -- |
| -- TEST DESCRIPTION: |
| -- See C3900063.AM. |
| -- |
| -- TEST FILES: |
| -- This test consists of the following files: |
| -- |
| -- => C3900060.A |
| -- C3900061.A |
| -- C3900062.A |
| -- C3900063.AM |
| -- |
| -- |
| -- CHANGE HISTORY: |
| -- 06 Dec 94 SAIC ACVC 2.0 |
| -- 04 Jun 96 SAIC ACVC 2.1: Modified prologue. Added pragma Elaborate |
| -- for Ada.Calendar. |
| -- |
| --! |
| |
| with Ada.Calendar; |
| pragma Elaborate (Ada.Calendar); |
| |
| package C3900060 is -- Alert system abstraction. |
| |
| |
| -- 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); |
| |
| |
| -- 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); |
| |
| |
| |
| type Alert_Type is tagged private; -- Root tagged type. |
| |
| procedure Set_Display (A : in out Alert_Type; -- To be inherited by |
| D : in Device_Enum); -- all derivatives. |
| |
| 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. |
| |
| |
| -- The following functions are needed to verify the values of the |
| -- root tagged type's private components. |
| |
| function Get_Time (A: Alert_Type) return Ada.Calendar.Time; |
| |
| function Get_Display (A: Alert_Type) return Device_Enum; |
| |
| function Initial_Values_Okay (A : in Alert_Type) |
| return Boolean; |
| |
| function Bad_Final_Values (A : in Alert_Type) |
| return Boolean; |
| |
| private |
| |
| type Alert_Type is tagged record -- Root tagged type. |
| Arrival_Time : Ada.Calendar.Time := Default_Time; |
| Display_On : Device_Enum := Null_Device; |
| end record; |
| |
| |
| end C3900060; |
| |
| |
| --==================================================================-- |
| |
| |
| package body C3900060 is |
| |
| |
| procedure Set_Display (A : in out Alert_Type; |
| D : in Device_Enum) is |
| begin |
| A.Display_On := D; |
| end Set_Display; |
| |
| |
| 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; |
| |
| |
| function Get_Time (A: Alert_Type) return Ada.Calendar.Time is |
| begin |
| return A.Arrival_Time; |
| end Get_Time; |
| |
| |
| function Get_Display (A: Alert_Type) return Device_Enum is |
| begin |
| return A.Display_On; |
| end Get_Display; |
| |
| |
| function Initial_Values_Okay (A : in Alert_Type) return Boolean is |
| begin |
| return (A = (Arrival_Time => Default_Time, -- Check "=" operator |
| Display_On => Null_Device)); -- availability. |
| end Initial_Values_Okay; -- Aggregate with |
| -- named associations. |
| |
| function Bad_Final_Values (A : in Alert_Type) return Boolean is |
| begin |
| return (A /= (Alert_Time, Null_Device)); -- Check "/=" operator |
| -- availability. |
| end Bad_Final_Values; -- Aggregate with |
| -- positional assoc. |
| |
| end C3900060; |