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-- C393011.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.
--*
--
-- TEST OBJECTIVE:
-- Check that an abstract extended type can be derived from an abstract
-- type, and that a a non-abstract type may then be derived from the
-- second abstract type.
--
-- TEST DESCRIPTION:
-- Define an abstract type with three primitive operations, two of them
-- abstract. Derive an extended type from it, inheriting the non-
-- abstract operation, overriding one of the abstract operations with
-- a non-abstract operation, and overriding the other abstract operation
-- with an abstract operation. The extended type is therefore abstract;
-- derive an extended type from it. Override the abstract operation with
-- a non-abstract operation; inherit one operation from the original
-- abstract type, and inherit one operation from the intermediate
-- abstract type.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
--
--!
Package C393011_0 is
-- Definitions
type Status_Enum is (None, Unhandled, Pending, Handled);
type Serial_Type is new Integer range 0 .. Integer'Last;
subtype Priority_Type is Integer range 0..10;
type Display_Enum is (Bit_Bucket, TTY, Console, Big_Screen);
Next : Serial_Type := 1;
Display_Device : Display_Enum := Bit_Bucket;
end C393011_0;
-- Definitions;
--=======================================================================--
with C393011_0;
-- Definitions
Package C393011_1 is
-- Alert
package Definitions renames C393011_0;
type Alert_Type is abstract tagged record
Status : Definitions.Status_Enum := Definitions.None;
Serial_Num : Definitions.Serial_Type := 0;
Priority : Definitions.Priority_Type;
end record;
-- Alert_Type is an abstract type with
-- two operations to be overridden
procedure Set_Status ( A : in out Alert_Type; -- not abstract
To : Definitions.Status_Enum);
procedure Set_Serial ( A : in out Alert_Type) is abstract;
procedure Display ( A : Alert_Type) is abstract;
end C393011_1;
-- Alert
--=======================================================================--
with C393011_0;
package body C393011_1 is
-- Alert
procedure Set_Status ( A : in out Alert_Type;
To : Definitions.Status_Enum) is
begin
A.Status := To;
end Set_Status;
end C393011_1;
-- Alert;
--=======================================================================--
with C393011_0,
-- Definitions,
C393011_1,
-- Alert,
Calendar;
Package C393011_3 is
-- New_Alert
type New_Alert_Type is abstract new C393011_1.Alert_Type with record
Display_Dev : C393011_0.Display_Enum := C393011_0.TTY;
end record;
-- procedure Set_Status is inherited
procedure Set_Serial ( A : in out New_Alert_Type); -- override/see body
procedure Display ( A : New_Alert_Type) is abstract;
-- override is abstract
-- still can't declare objects of New_Alert_Type
end C393011_3;
-- New_Alert
--=======================================================================--
with C393011_0;
Package Body C393011_3 is
-- New_Alert
package Definitions renames C393011_0;
procedure Set_Serial (A : in out New_Alert_Type) is
use type Definitions.Serial_Type;
begin
A.Serial_Num := Definitions.Next;
Definitions.Next := Definitions."+"( Definitions.Next, 1);
end Set_Serial;
End C393011_3;
-- New_Alert;
--=======================================================================--
with C393011_0,
-- Definitions
C393011_3;
-- New_Alert -- package Alert is not visible
package C393011_4 is
package New_Alert renames C393011_3;
package Definitions renames C393011_0;
type Final_Alert_Type is new New_Alert.New_Alert_Type with null record;
-- inherits Set_Status including body
-- inherits Set_Serial including body
-- must override Display since inherited Display is abstract
procedure Display(FA : in Final_Alert_Type);
procedure Handle (FA : in out Final_Alert_Type);
end C393011_4;
package body C393011_4 is
procedure Display (FA : in Final_Alert_Type) is
begin
Definitions.Display_Device := FA.Display_Dev;
end Display;
procedure Handle (FA : in out Final_Alert_Type) is
begin
Set_Status (FA, Definitions.Handled);
Set_Serial (FA);
Display (FA);
end Handle;
end C393011_4;
with C393011_0,
-- Definitions
C393011_3;
-- New_Alert -- package Alert is not visible
with C393011_4;
with Report;
procedure C393011 is
use C393011_4;
use Definitions;
FA : Final_Alert_Type;
begin
Report.Test ("C393011", "Check that an extended type can be derived " &
"from an abstract type");
if (Definitions.Display_Device /= Definitions.Bit_Bucket)
or (Definitions.Next /= 1)
or (FA.Status /= Definitions.None)
or (FA.Serial_Num /= 0)
or (FA.Display_Dev /= TTY) then
Report.Failed ("Incorrect initial conditions");
end if;
Handle (FA);
if (Definitions.Display_Device /= Definitions.TTY)
or (Definitions.Next /= 2)
or (FA.Status /= Definitions.Handled)
or (FA.Serial_Num /= 1)
or (FA.Display_Dev /= TTY) then
Report.Failed ("Incorrect results from Handle");
end if;
Report.Result;
end C393011;
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