1-- C730A01.A
2--
3--                             Grant of Unlimited Rights
4--
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
14--     to do so.
15--
16--                                    DISCLAIMER
17--
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.
24--*
25--
26-- OBJECTIVE:
27--      Check that a tagged type declared in a package specification
28--      may be passed as a generic formal (tagged) private type to a generic
29--      package declaration. Check that the formal type may be extended with
30--      a private extension in the generic package.
31--
32--      Check that, in the instance, the private extension inherits the
33--      user-defined primitive subprograms of the tagged actual.
34--
35-- TEST DESCRIPTION:
36--      Declare a tagged type and an associated primitive subprogram in a
37--      package specification (foundation code). Declare a generic package
38--      which takes a tagged type as a formal parameter, and then extends
39--      it with a private extension (foundation code).
40--
41--      Instantiate the generic package with the tagged type from the first
42--      package (the "generic" extension should now have inherited
43--      the primitive subprogram of the tagged type from the first
44--      package).
45--
46--      In the main program, call the primitive subprogram inherited by the
47--      "generic" extension, and verify the correctness of the components.
48--
49-- TEST FILES:
50--      The following files comprise this test:
51--
52--         F730A000.A
53--         F730A001.A
54--      => C730A01.A
55--
56--
57-- CHANGE HISTORY:
58--      06 Dec 94   SAIC    ACVC 2.0
59--
60--!
61
62
63with F730A001;        -- Book definitions.
64package C730A01_0 is  -- Raw data to be used in creating book elements.
65
66
67   Book_Count : constant := 3;
68
69   subtype Number_Of_Books is Integer range 1 .. Book_Count;
70
71   type Data_List is array (Number_Of_Books) of F730A001.Text_Ptr;
72
73   Title_List  : Data_List := (new String'("Wuthering Heights"),
74                               new String'("Heart of Darkness"),
75                               new String'("Ulysses"));
76
77   Author_List : Data_List := (new String'("Bronte, Emily"),
78                               new String'("Conrad, Joseph"),
79                               new String'("Joyce, James"));
80
81end C730A01_0;
82
83
84     --==================================================================--
85
86
87
88
89     --==================================================================--
90
91
92-- Library-level instantiation. Actual parameter is tagged record.
93
94with F730A001;  -- Book definitions.
95with F730A000;  -- Singly-linked list abstraction.
96package C730A01_1 is new F730A000 (Parent_Type => F730A001.Book_Type);
97
98
99     --==================================================================--
100
101
102with Report;
103
104with F730A001;   -- Book definitions.
105with C730A01_0;  -- Raw book data.
106with C730A01_1;  -- Instance.
107
108use  F730A001;   -- Primitive operations of Book_Type directly visible.
109use  C730A01_1;  -- Operations inherited by Node_Type directly visible.
110
111procedure C730A01 is
112
113
114   List_Of_Books : Priv_Node_Ptr := null;  -- Head of linked list of books.
115
116
117          --========================================================--
118
119
120   procedure Create_List (Title, Author : in     C730A01_0.Data_List;
121                          Head          : in out Priv_Node_Ptr) is
122
123      Book     : Priv_Node_Type;  -- Object of extended type.
124      Book_Ptr : Priv_Node_Ptr;
125
126   begin
127      for I in C730A01_0.Number_Of_Books loop
128         Create_Book (Title (I), Author (I), Book);    -- Call inherited
129                                                       -- operation.
130         Book_Ptr := new Priv_Node_Type'(Book);
131         Add (Book_Ptr, Head);
132      end loop;
133   end Create_List;
134
135
136          --========================================================--
137
138
139   function Bad_List_Contents return Boolean is
140      Book1_Ptr : Priv_Node_Ptr;
141      Book2_Ptr : Priv_Node_Ptr;
142      Book3_Ptr : Priv_Node_Ptr;
143   begin
144      Remove (List_Of_Books, Book1_Ptr);
145      Remove (List_Of_Books, Book2_Ptr);
146      Remove (List_Of_Books, Book3_Ptr);
147      return (Book1_Ptr.Title.all  /= "Ulysses"           or   -- Inherited
148              Book1_Ptr.Author.all /= "Joyce, James"      or   -- components
149              Book2_Ptr.Title.all  /= "Heart of Darkness" or   -- should still
150              Book2_Ptr.Author.all /= "Conrad, Joseph"    or   -- be visible in
151              Book3_Ptr.Title.all  /= "Wuthering Heights" or   -- private
152              Book3_Ptr.Author.all /= "Bronte, Emily");        -- extension.
153
154   end Bad_List_Contents;
155
156
157          --========================================================--
158
159
160begin  -- Main program.
161
162   Report.Test ("C730A01", "Inheritance of primitive operations: private " &
163                "extension of formal tagged private type; actual is " &
164                "an ultimate ancestor type");
165
166   -- Create linked list using inherited operation:
167   Create_List (C730A01_0.Title_List, C730A01_0.Author_List, List_Of_Books);
168
169   -- Verify results:
170   if Bad_List_Contents then
171      Report.Failed ("Wrong values after call to inherited operation");
172   end if;
173
174   Report.Result;
175
176end C730A01;
177