1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
|
-- CC51D02.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, in an instance, each implicit declaration of a user-defined
-- subprogram of a formal private extension declares a view of the
-- corresponding primitive subprogram of the ancestor, and that if the
-- tag in a call is statically determined to be that of the formal type,
-- the body executed will be that corresponding to the actual type.
--
-- Check subprograms declared within a generic formal package. Check for
-- the case where the actual type passed to the formal private extension
-- is a class-wide type. Check for several types in the same class.
--
--
-- TEST DESCRIPTION:
-- Declare a list abstraction in a generic package which manages lists of
-- elements of any nonlimited type (foundation code). Declare a package
-- which declares a tagged type and a derivative. Declare an operation
-- for the root tagged type and override it for the derivative. Declare
-- a generic subprogram which operates on lists of elements of tagged
-- types. Provide the generic subprogram with two formal parameters: (1)
-- a formal derived tagged type which represents a list element type, and
-- (2) a generic formal package with the list abstraction package as
-- template. Use the formal derived type as the generic formal actual
-- part for the formal package. Within the generic subprogram, call the
-- operation of the root tagged type. In the main program, instantiate
-- the generic list package and the generic subprogram with the class-wide
-- type for the root tagged type.
--
-- TEST FILES:
-- The following files comprise this test:
--
-- FC51D00.A
-- -> CC51D02.A
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 05 Jan 95 SAIC Changed types of TC_Expected_1 and TC_Expected_2
-- from specific to class-wide. Eliminated (illegal)
-- assignment step prior to comparison of
-- TC_Expected_X with item on stack.
--
--!
package CC51D02_0 is -- This package simulates support for a personnel
-- database.
type SSN_Type is new String (1 .. 9);
type Blind_ID_Type is tagged record -- Root type of
SSN : SSN_Type; -- class.
-- ... Other components.
end record;
procedure Update_ID (Item : in out Blind_ID_Type); -- Parent operation.
-- ... Other operations.
type Name_Type is new String (1 .. 9);
type Named_ID_Type is new Blind_ID_Type with record -- Direct derivative
Name : Name_Type := "Doe "; -- of root type.
-- ... Other components.
end record;
-- Inherits Update_ID from parent.
procedure Update_ID (Item : in out Named_ID_Type); -- Overrides parent's
-- implementation.
end CC51D02_0;
--==================================================================--
package body CC51D02_0 is
-- The implementations of Update_ID are purely artificial; the validity of
-- their implementations in the context of the abstraction is irrelevant to
-- the feature being tested.
procedure Update_ID (Item : in out Blind_ID_Type) is
begin
Item.SSN := "111223333";
end Update_ID;
procedure Update_ID (Item : in out Named_ID_Type) is
begin
Item.SSN := "444556666";
-- ... Other stuff.
end Update_ID;
end CC51D02_0;
--==================================================================--
-- --
-- Formal package used here. --
-- --
with FC51D00; -- Generic list abstraction.
with CC51D02_0; -- Tagged type declarations.
generic -- This procedure simulates a generic operation for types
-- in the class rooted at Blind_ID_Type.
type Elem_Type (<>) is new CC51D02_0.Blind_ID_Type with private;
with package List_Mgr is new FC51D00 (Elem_Type);
procedure CC51D02_1 (L : in out List_Mgr.List_Type; E : in Elem_Type);
--==================================================================--
-- The implementation of CC51D02_1 is purely artificial; the validity
-- of its implementation in the context of the abstraction is irrelevant
-- to the feature being tested.
--
-- The expected behavior here is as follows: for each actual type corresponding
-- to Elem_Type, the call to Update_ID should invoke the actual type's
-- implementation (based on the tag of the actual), which updates the object's
-- SSN field. Write_Element then adds the object to the list.
procedure CC51D02_1 (L : in out List_Mgr.List_Type; E : in Elem_Type) is
Element : Elem_Type := E; -- Can't update IN parameter.
-- Initialization of unconstrained variable.
begin
Update_ID (Element); -- Executes actual type's version
-- (for this test, this will be a
-- dispatching call).
List_Mgr.Write_Element (1, L, Element); -- Executes actual type's version
-- (for this test, this will be a
-- class-wide operation).
end CC51D02_1;
--==================================================================--
with FC51D00; -- Generic list abstraction.
with CC51D02_0; -- Tagged type declarations.
with CC51D02_1; -- Generic operation.
with Report;
procedure CC51D02 is
use CC51D02_0; -- All types & ops
-- directly visible.
-- Begin test code declarations: -----------------------
TC_Expected_1 : Blind_ID_Type'Class :=
Blind_ID_Type'(SSN => "111223333");
TC_Expected_2 : Blind_ID_Type'Class :=
Named_ID_Type'("444556666", "Doe ");
TC_Initial_1 : Blind_ID_Type := (SSN => "777889999");
TC_Initial_2 : Named_ID_Type := ("777889999", "Doe ");
TC_Initial_3 : Blind_ID_Type'Class := TC_Initial_2;
-- End test code declarations. -------------------------
package ID_Class_Lists is new FC51D00 (Blind_ID_Type'Class);
procedure Update_and_Write is new CC51D02_1 (Blind_ID_Type'Class,
ID_Class_Lists);
Blind_List : ID_Class_Lists.List_Type;
Named_List : ID_Class_Lists.List_Type;
Maimed_List : ID_Class_Lists.List_Type;
begin
Report.Test ("CC51D02", "Formal private extension, class-wide actual: " &
"body of primitive subprogram executed is that of actual " &
"type. Check for subprograms declared in formal package");
Update_and_Write (Blind_List, TC_Initial_1); -- Test root type actual.
if (ID_Class_Lists.View_Element (1, Blind_List) not in Blind_ID_Type) then
Report.Failed ("Result for root type actual is not in proper class");
elsif (ID_Class_Lists.View_Element (1, Blind_List) /= TC_Expected_1) then
Report.Failed ("Wrong result for root type actual");
end if;
Update_and_Write (Named_List, TC_Initial_2); -- Test derived type actual.
if (ID_Class_Lists.View_Element (1, Named_List) not in Named_ID_Type) then
Report.Failed ("Result for derived type actual is not in proper class");
elsif (ID_Class_Lists.View_Element (1, Named_List)/= TC_Expected_2) then
Report.Failed ("Wrong result for derived type actual");
end if;
-- In the subtest below, an object of a class-wide type (TC_Initial_3) is
-- passed to Update_and_Write. It has been initialized with an object of
-- type Named_ID_Type, so the result should be identical to
-- that of the Named_ID_Type subtest (namely TC_Expected_2). Note that
-- a new list of Named IDs is used (Maimed_List). This is to assure test
-- validity, since Named_List has already been updated by a previous
-- subtest.
Update_and_Write (Maimed_List, TC_Initial_3); -- Test class-wide actual.
if (ID_Class_Lists.View_Element (1, Maimed_List) not in Named_ID_Type) then
Report.Failed ("Result for class-wide actual is not in proper class");
elsif (ID_Class_Lists.View_Element (1, Maimed_List) /= TC_Expected_2) then
Report.Failed ("Wrong result for class-wide actual");
end if;
Report.Result;
end CC51D02;
|
