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-- C340A01.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:
-- Check that a tagged type declared in a package specification
-- may be passed as a generic formal (tagged) private type to a generic
-- package declaration. Check that the formal type may be extended with
-- a record extension in the generic package.
--
-- Check that, in the instance, the record extension inherits the
-- user-defined primitive subprograms of the tagged actual.
--
-- TEST DESCRIPTION:
-- Declare a tagged type and an associated primitive subprogram in a
-- package specification (foundation code). Declare a generic package
-- which takes a tagged type as a formal parameter, and then extends
-- it with a record extension (foundation code).
--
-- Instantiate the generic package with the tagged type from the first
-- package (the "generic" extension should now have inherited
-- the primitive subprogram of the tagged type from the first
-- package).
--
-- In the main program, call the primitive subprogram inherited by the
-- "generic" extension, and verify the correctness of the components.
--
-- TEST FILES:
-- This test consists of the following files:
--
-- F340A000.A
-- F340A001.A
-- => C340A01.A
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 12 Jun 96 SAIC ACVC 2.1: Modified prologue. Removed extraneous
-- comments.
--
--!
with F340A001; -- Book definitions.
package C340A01_0 is -- Raw data to be used in creating book elements.
Book_Count : constant := 3;
subtype Number_Of_Books is Integer range 1 .. Book_Count;
type Data_List is array (Number_Of_Books) of F340A001.Text_Ptr;
Title_List : Data_List := (new String'("Wuthering Heights"),
new String'("Heart of Darkness"),
new String'("Ulysses"));
Author_List : Data_List := (new String'("Bronte, Emily"),
new String'("Conrad, Joseph"),
new String'("Joyce, James"));
end C340A01_0;
--==================================================================--
-- Library-level instantiation. Actual parameter is tagged record.
with F340A001; -- Book definitions.
with F340A000; -- Singly-linked list abstraction.
package C340A01_1 is new F340A000 (Parent_Type => F340A001.Book_Type);
--==================================================================--
with Report;
with F340A001; -- Book definitions.
with C340A01_0; -- Raw book data.
with C340A01_1; -- Instance.
use F340A001; -- Primitive operations of Book_Type directly visible.
use C340A01_1; -- Operations inherited by Node_Type directly visible.
procedure C340A01 is
List_Of_Books : Node_Ptr := null; -- Head of linked list of books.
--========================================================--
procedure Create_List (Title, Author : in C340A01_0.Data_List;
Head : in out Node_Ptr) is
Book : Node_Type; -- Object of extended type.
Book_Ptr : Node_Ptr;
begin
for I in C340A01_0.Number_Of_Books loop
Create_Book (Title (I), Author (I), Book); -- Call inherited
-- operation.
Book_Ptr := new Node_Type'(Book);
Add (Book_Ptr, Head);
end loop;
end Create_List;
--========================================================--
function Bad_List_Contents return Boolean is
begin
return (List_Of_Books.Title.all /= "Ulysses" or
List_Of_Books.Author.all /= "Joyce, James" or
List_Of_Books.Next.Title.all /= "Heart of Darkness" or
List_Of_Books.Next.Author.all /= "Conrad, Joseph" or
List_Of_Books.Next.Next.Title.all /= "Wuthering Heights" or
List_Of_Books.Next.Next.Author.all /= "Bronte, Emily");
end Bad_List_Contents;
--========================================================--
begin -- Main program.
Report.Test ("C340A01", "Inheritance of primitive operations: record " &
"extension of formal tagged private type; actual is " &
"an ultimate ancestor type");
-- Create linked list using inherited operation:
Create_List (C340A01_0.Title_List, C340A01_0.Author_List, List_Of_Books);
-- Verify results:
if Bad_List_Contents then
Report.Failed ("Wrong values after call to inherited operation");
end if;
Report.Result;
end C340A01;
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