3 -- Grant of Unlimited Rights
5 -- Under contracts F33600-87-D-0337, F33600-84-D-0280, MDA903-79-C-0687,
6 -- F08630-91-C-0015, and DCA100-97-D-0025, the U.S. Government obtained
7 -- unlimited rights in the software and documentation contained herein.
8 -- Unlimited rights are defined in DFAR 252.227-7013(a)(19). By making
9 -- this public release, the Government intends to confer upon all
10 -- recipients unlimited rights equal to those held by the Government.
11 -- These rights include rights to use, duplicate, release or disclose the
12 -- released technical data and computer software in whole or in part, in
13 -- any manner and for any purpose whatsoever, and to have or permit others
18 -- ALL MATERIALS OR INFORMATION HEREIN RELEASED, MADE AVAILABLE OR
19 -- DISCLOSED ARE AS IS. THE GOVERNMENT MAKES NO EXPRESS OR IMPLIED
20 -- WARRANTY AS TO ANY MATTER WHATSOEVER, INCLUDING THE CONDITIONS OF THE
21 -- SOFTWARE, DOCUMENTATION OR OTHER INFORMATION RELEASED, MADE AVAILABLE
22 -- OR DISCLOSED, OR THE OWNERSHIP, MERCHANTABILITY, OR FITNESS FOR A
23 -- PARTICULAR PURPOSE OF SAID MATERIAL.
27 -- Check that a record extension (declared in a package specification) of
28 -- a tagged type (declared in a different package specification) may be
29 -- passed as a generic formal (tagged) private type to a generic package
30 -- declaration. Check that the formal type may be further extended with a
31 -- record extension in the generic package.
33 -- Check that, in the instance, the record extension inherits the
34 -- user-defined primitive subprograms of the tagged actual, including
35 -- those inherited by the actual from its parent.
38 -- Declare a tagged type and an associated primitive subprogram in a
39 -- package specification (foundation code). Declare a record extension
40 -- of the tagged type and an associated primitive subprogram in a second
41 -- package specification. Declare a generic package which takes a tagged
42 -- type as a formal parameter, and then extends it with a record
43 -- extension (foundation code).
45 -- Instantiate the generic package with the record extension from the
46 -- second package (the "generic" extension should now have inherited
47 -- the primitive subprograms of the record extension from the second
50 -- In the main program, call the primitive subprograms inherited by the
51 -- "generic" extension. There are two: (1) Create_Book, declared for
52 -- the root tagged type in the first package (inherited by the record
53 -- extension of the second package, and then in turn by the "generic"
54 -- extension), and (2) Update_Pages, declared for the record extension
55 -- in the second package. Verify the correctness of the components.
58 -- This test consists of the following files:
66 -- 06 Dec 94 SAIC ACVC 2.0
67 -- 12 Jun 96 SAIC ACVC 2.1: Modified prologue. Removed extraneous
72 with F340A001
; -- Book definitions.
73 package C340A02_0
is -- Extended book abstraction.
76 type Detailed_Book_Type
is new F340A001
.Book_Type
with record
77 Pages
: Natural; -- Record ext.
78 end record; -- of root tagged
81 -- Inherits Create_Book from Book_Type.
83 procedure Update_Pages
(Book
: in out Detailed_Book_Type
; -- Primitive op.
84 Pages
: in Natural); -- of extension.
90 --==================================================================--
93 package body C340A02_0
is
96 procedure Update_Pages
(Book
: in out Detailed_Book_Type
;
97 Pages
: in Natural) is
106 --==================================================================--
109 with F340A001
; -- Book definitions.
110 package C340A02_1
is -- Raw data to be used in creating book elements.
113 Book_Count
: constant := 3;
115 subtype Number_Of_Books
is Integer range 1 .. Book_Count
;
117 type Data_List
is array (Number_Of_Books
) of F340A001
.Text_Ptr
;
118 type Page_Counts
is array (Number_Of_Books
) of Natural;
120 Title_List
: Data_List
:= (new String'("Wuthering Heights"),
121 new String'("Heart of Darkness"),
122 new String'("Ulysses"));
124 Author_List : Data_List := (new String'("Bronte, Emily"),
125 new String'("Conrad, Joseph"),
126 new String'("Joyce, James"));
128 Page_List
: Page_Counts
:= (237, 215, 456);
133 --==================================================================--
136 -- Library-level instantiation. Actual parameter is record extension.
138 with C340A02_0
; -- Extended book abstraction.
139 with F340A000
; -- Singly-linked list abstraction.
140 package C340A02_2
is new F340A000
141 (Parent_Type
=> C340A02_0
.Detailed_Book_Type
);
144 --==================================================================--
149 with C340A02_0
; -- Extended book abstraction.
150 with C340A02_1
; -- Raw book data.
151 with C340A02_2
; -- Instance.
153 use C340A02_0
; -- Primitive operations of Detailed_Book_Type directly visible.
154 use C340A02_2
; -- Operations inherited by Node_Type directly visible.
159 List_Of_Books
: Node_Ptr
:= null; -- Head of linked list of books.
162 --========================================================--
165 procedure Create_List
(Title
, Author
: in C340A02_1
.Data_List
;
166 Pages
: in C340A02_1
.Page_Counts
;
167 Head
: in out Node_Ptr
) is
169 Book
: Node_Type
; -- Object of extended type.
173 for I
in C340A02_1
.Number_Of_Books
loop
174 Create_Book
(Title
(I
), Author
(I
), Book
); -- Call twice-inherited
176 Update_Pages
(Book
, Pages
(I
)); -- Call inherited op.
177 Book_Ptr
:= new Node_Type
'(Book);
178 Add (Book_Ptr, Head);
183 --========================================================--
186 function Bad_List_Contents return Boolean is
188 return (List_Of_Books.Title.all /= "Ulysses" or
189 List_Of_Books.Author.all /= "Joyce, James" or
190 List_Of_Books.Pages /= 456 or
191 List_Of_Books.Next.Title.all /= "Heart of Darkness" or
192 List_Of_Books.Next.Author.all /= "Conrad, Joseph" or
193 List_Of_Books.Next.Pages /= 215 or
194 List_Of_Books.Next.Next.Title.all /= "Wuthering Heights" or
195 List_Of_Books.Next.Next.Author.all /= "Bronte, Emily" or
196 List_Of_Books.Next.Next.Pages /= 237);
198 end Bad_List_Contents;
201 --========================================================--
204 begin -- Main program.
206 Report.Test ("C340A02", "Inheritance of primitive operations: record " &
207 "extension of formal tagged private type; actual is " &
208 "a record extension");
210 -- Create linked list using inherited operation:
211 Create_List (C340A02_1.Title_List, C340A02_1.Author_List,
212 C340A02_1.Page_List, List_Of_Books);
215 if Bad_List_Contents then
216 Report.Failed ("Wrong values after call to inherited operations");