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-- 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;
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