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+-- C340A02.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 record extension (declared in a package specification) of
+-- a tagged type (declared in a different package specification) may be
+-- passed as a generic formal (tagged) private type to a generic package
+-- declaration. Check that the formal type may be further 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, including
+-- those inherited by the actual from its parent.
+--
+-- TEST DESCRIPTION:
+-- Declare a tagged type and an associated primitive subprogram in a
+-- package specification (foundation code). Declare a record extension
+-- of the tagged type and an associated primitive subprogram in a second
+-- package specification. 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 record extension from the
+-- second package (the "generic" extension should now have inherited
+-- the primitive subprograms of the record extension from the second
+-- package).
+--
+-- In the main program, call the primitive subprograms inherited by the
+-- "generic" extension. There are two: (1) Create_Book, declared for
+-- the root tagged type in the first package (inherited by the record
+-- extension of the second package, and then in turn by the "generic"
+-- extension), and (2) Update_Pages, declared for the record extension
+-- in the second package. Verify the correctness of the components.
+--
+-- TEST FILES:
+-- This test consists of the following files:
+--
+-- F340A000.A
+-- F340A001.A
+-- => C340A02.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 C340A02_0 is -- Extended book abstraction.
+
+
+ type Detailed_Book_Type is new F340A001.Book_Type with record
+ Pages : Natural; -- Record ext.
+ end record; -- of root tagged
+ -- type.
+
+ -- Inherits Create_Book from Book_Type.
+
+ procedure Update_Pages (Book : in out Detailed_Book_Type; -- Primitive op.
+ Pages : in Natural); -- of extension.
+
+
+end C340A02_0;
+
+
+ --==================================================================--
+
+
+package body C340A02_0 is
+
+
+ procedure Update_Pages (Book : in out Detailed_Book_Type;
+ Pages : in Natural) is
+ begin
+ Book.Pages := Pages;
+ end Update_Pages;
+
+
+end C340A02_0;
+
+
+ --==================================================================--
+
+
+with F340A001; -- Book definitions.
+package C340A02_1 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;
+ type Page_Counts is array (Number_Of_Books) of Natural;
+
+ 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"));
+
+ Page_List : Page_Counts := (237, 215, 456);
+
+end C340A02_1;
+
+
+ --==================================================================--
+
+
+-- Library-level instantiation. Actual parameter is record extension.
+
+with C340A02_0; -- Extended book abstraction.
+with F340A000; -- Singly-linked list abstraction.
+package C340A02_2 is new F340A000
+ (Parent_Type => C340A02_0.Detailed_Book_Type);
+
+
+ --==================================================================--
+
+
+with Report;
+
+with C340A02_0; -- Extended book abstraction.
+with C340A02_1; -- Raw book data.
+with C340A02_2; -- Instance.
+
+use C340A02_0; -- Primitive operations of Detailed_Book_Type directly visible.
+use C340A02_2; -- Operations inherited by Node_Type directly visible.
+
+procedure C340A02 is
+
+
+ List_Of_Books : Node_Ptr := null; -- Head of linked list of books.
+
+
+ --========================================================--
+
+
+ procedure Create_List (Title, Author : in C340A02_1.Data_List;
+ Pages : in C340A02_1.Page_Counts;
+ Head : in out Node_Ptr) is
+
+ Book : Node_Type; -- Object of extended type.
+ Book_Ptr : Node_Ptr;
+
+ begin
+ for I in C340A02_1.Number_Of_Books loop
+ Create_Book (Title (I), Author (I), Book); -- Call twice-inherited
+ -- operation.
+ Update_Pages (Book, Pages (I)); -- Call inherited op.
+ 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.Pages /= 456 or
+ List_Of_Books.Next.Title.all /= "Heart of Darkness" or
+ List_Of_Books.Next.Author.all /= "Conrad, Joseph" or
+ List_Of_Books.Next.Pages /= 215 or
+ List_Of_Books.Next.Next.Title.all /= "Wuthering Heights" or
+ List_Of_Books.Next.Next.Author.all /= "Bronte, Emily" or
+ List_Of_Books.Next.Next.Pages /= 237);
+
+ end Bad_List_Contents;
+
+
+ --========================================================--
+
+
+begin -- Main program.
+
+ Report.Test ("C340A02", "Inheritance of primitive operations: record " &
+ "extension of formal tagged private type; actual is " &
+ "a record extension");
+
+ -- Create linked list using inherited operation:
+ Create_List (C340A02_1.Title_List, C340A02_1.Author_List,
+ C340A02_1.Page_List, List_Of_Books);
+
+ -- Verify results:
+ if Bad_List_Contents then
+ Report.Failed ("Wrong values after call to inherited operations");
+ end if;
+
+ Report.Result;
+
+end C340A02;