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-- C3900063.AM

--

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--     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

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--     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 record 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 which return values of the extension's private components,

--      and which will be inherited by later derivatives.

--

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

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

--      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 record 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:

--

--         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.

--

--!

with Report;

with C3900060; -- Basic alert abstraction.

with C3900062; -- Further extended alert abstraction.

use  C3900060; -- Primitive operations of Alert_Type directly visible.

procedure C3900063 is

begin

   Report.Test ("C390006", "Primitive operation inheritance by type " &

                "extensions: all extensions declared in different " &

                "packages; root type and 1st extension are private, " &

                "2nd extension is record extension");

   -- The cases for type C3900060.Alert_Type and C3900061.Low_Alert_Type

   -- are tested in C390005. Those subtests are not repeated here.

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

      declare

         Medium_Alarm : C3900062.Medium_Alert_Type; -- Rec. ext. of extension.

         use C3900062; -- 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 C3900060.Display_Count_For /= (Null_Device => 1,

                                     Teletype    => 1,

                                     Console     => 1,

                                     Big_Screen  => 0)

   then

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

   end if;

   Report.Result;

end C3900063;