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-- C3900053.AM

--

--                             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:

--      Check that a private tagged type declared in a package specification

--      may be extended with a private extension in a different package

--      specification, and that this private extension may in turn be extended

--      by a private extension in a third package.

--

--      Check that each derivative inherits the user-defined primitive

--      subprograms of its parent (including those that its parent inherited),

--      that it may override these inherited primitive subprograms, and that it

--      may also declare its own primitive subprograms.

--

--      Check that type conversion is defined from a type extension to its

--      parent, and that this parent itself may be a type extension.

--

-- TEST DESCRIPTION:

--      Declare a root tagged private type and two associated primitive

--      subprograms in a package specification. Declare operations to verify

--      the correctness of the components. Declare operations which return

--      values of the type's private components, and which will be

--      inherited by later derivatives.

--

--      Extend the root type with a private extension in a second package

--      specification. Declare a new primitive subprogram for the extension,

--      and override one of the two inherited subprograms. Within the

--      overriding subprogram, utilize type conversion to call the parent's

--      implementation of the same subprogram. Also within the overriding

--      subprogram, call the new primitive subprogram and each inherited

--      subprogram. Declare operations of the private extension which

--      override the verification operations of its parent. Declare operations

--      of the private extension which return values of the extension's

--      private components, and which will be inherited by later derivatives.

--

--      Extend the extension with a private extension in a third package

--      specification. Declare a new primitive subprogram for this private

--      extension, and override one of the three inherited subprograms.

--      Within the overriding subprogram, utilize type conversion to call the

--      parent's implementation of the same subprogram. Also within the

--      overriding subprogram, call the new primitive subprogram and each

--      inherited subprogram. Declare operations of the private extension

--      which override the verification operations of its parent.

--

--      In the main program, declare objects of the root tagged type and

--      the two type extensions. For each object, call the overriding

--      subprogram, and verify the correctness of the components by calling

--      the verification operations.

--

-- TEST FILES:

--      This test consists of the following files:

--

--         C3900050.A

--         C3900051.A

--         C3900052.A

--      => C3900053.AM

--

--

-- CHANGE HISTORY:

--      06 Dec 94   SAIC    ACVC 2.0

--      15 May 96   SAIC    ACVC 2.1: Modified prologue.

--

--!

with Report;

with C3900050; -- Basic alert abstraction.

with C3900051; -- Extended alert abstraction.

with C3900052; -- Further extended alert abstraction.

use  C3900050; -- Primitive operations of Alert_Type directly visible.

procedure C3900053 is

begin

   Report.Test ("C390005", "Primitive operation inheritance by type " &

                "extensions: root type is private; all extensions are " &

                "private and declared in different packages");

   ALERT_SUBTEST: -------------------------------------------------------------

      declare

         Alarm : C3900050.Alert_Type;     -- Root tagged private type.

      begin

         if not Initial_Values_Okay (Alarm) then

            Report.Failed ("Wrong initial values for Alert_Type");

         end if;

         Handle (Alarm);

         if Bad_Final_Values (Alarm) then

            Report.Failed ("Wrong values for Alert_Type after Handle");

         end if;

      end Alert_Subtest;

   -- Check intermediate display counts:

   if C3900050.Display_Count_For (Null_Device) /= 1 or

      C3900050.Display_Count_For (Teletype)    /= 0 or

      C3900050.Display_Count_For (Console)     /= 0 or

      C3900050.Display_Count_For (Big_Screen)  /= 0

   then

      Report.Failed ("Wrong display counts after Alert_Type");

   end if;

   LOW_ALERT_SUBTEST: ---------------------------------------------------------

      declare

         Low_Alarm : C3900051.Low_Alert_Type; -- Priv. ext. of tagged type.

         use C3900051; -- Primitive operations of extension directly visible.

      begin

         if not Initial_Values_Okay (Low_Alarm) then

            Report.Failed ("Wrong initial values for Low_Alert_Type");

         end if;

         Handle (Low_Alarm);

         if Bad_Final_Values (Low_Alarm) then

            Report.Failed ("Wrong values for Low_Alert_Type after Handle");

         end if;

      end Low_Alert_Subtest;

   -- Check intermediate display counts:

   if C3900050.Display_Count_For /= (Null_Device => 2,

                                     Teletype    => 1,

                                     Console     => 0,

                                     Big_Screen  => 0)

   then

      Report.Failed ("Wrong display counts after Low_Alert_Type");

   end if;

   MEDIUM_ALERT_SUBTEST: ------------------------------------------------------

      declare

         Medium_Alarm : C3900052.Medium_Alert_Type; -- Priv. ext. of extension.

         use C3900052; -- Primitive operations of extension directly visible.

      begin

         if not Initial_Values_Okay (Medium_Alarm) then

            Report.Failed ("Wrong initial values for Medium_Alert_Type");

         end if;

         Handle (Medium_Alarm);

         if Bad_Final_Values (Medium_Alarm) then

            Report.Failed ("Wrong values for Medium_Alert_Type after Handle");

         end if;

      end Medium_Alert_Subtest;

   -- Check final display counts:

   if C3900050.Display_Count_For /= (Null_Device => 3,

                                     Teletype    => 2,

                                     Console     => 1,

                                     Big_Screen  => 0)

   then

      Report.Failed ("Wrong display counts after Medium_Alert_Type");

   end if;

   Report.Result;

end C3900053;