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
|
-- C393012.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 non-abstract subprogram of an abstract type can be
-- called with a controlling operand that is a type conversion to
-- the abstract type.
--
-- Check that converting to the class-wide type of an abstract type
-- inside an operation of that type causes a "redispatch" of the
-- called operation.
--
-- TEST DESCRIPTION:
-- This test defines an abstract type, and further derives types from it.
-- The key feature of this test is in the "Display" procedures where
-- the bodies of these procedures convert an object to the class-wide
-- type of the root abstract type, causing a "redispatch".
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 16 Dec 94 SAIC Add allocation to the object initializations
--
--!
package C393012_0 is
subtype Row_Number is Positive range 1..120;
subtype Seat_Letter is Character range 'A'..'M';
type Ticket is abstract tagged
record
Flight : Natural;
Row : Row_Number;
Seat : Seat_Letter;
end record;
function Display( T: Ticket ) return String;
function Service( T: Ticket ) return String is abstract;
end C393012_0;
with TCTouch;
package body C393012_0 is
function Display( T: Ticket ) return String is
begin
TCTouch.Touch('T'); --------------------------------------------------- T
return "Fl:" & Natural'Image(T.Flight)
& Service( Ticket'Class( T ) )
& " Seat:" & Row_Number'Image(T.Row) & T.Seat;
end Display;
end C393012_0;
with C393012_0;
package C393012_1 is
type Economy is new C393012_0.Ticket with null record;
function Display( T: Economy ) return String;
function Service( T: Economy ) return String;
type Meal_Designator is ( B, L, D, V, SN );
type First is new C393012_0.Ticket with
record
Meal : Meal_Designator;
end record;
function Display( T: First ) return String;
function Service( T: First ) return String;
procedure Set_Meal( T: in out First; To_Meal : Meal_Designator );
end C393012_1;
with TCTouch;
package body C393012_1 is
function Display( T: Economy ) return String is
begin
TCTouch.Touch('E'); --------------------------------------------------- E
return C393012_0.Display( C393012_0.Ticket( T ) );
end Display; -- conversion to abstract type
function Service( T: Economy ) return String is
begin
TCTouch.Touch('e'); --------------------------------------------------- e
return " K";
end Service;
function Display( T: First ) return String is
begin
TCTouch.Touch('F'); --------------------------------------------------- F
return C393012_0.Display( C393012_0.Ticket( T ) );
end Display; -- conversion to abstract type
function Service( T: First ) return String is
begin
TCTouch.Touch('f'); --------------------------------------------------- f
return " F" & Meal_Designator'Image(T.Meal);
end Service;
procedure Set_Meal( T: in out First; To_Meal : Meal_Designator ) is
begin
T.Meal := To_Meal;
end Set_Meal;
end C393012_1;
with Report;
with TCTouch;
with C393012_0;
with C393012_1;
procedure C393012 is
package Rt renames C393012_0;
package Tx renames C393012_1;
type Tix is access Rt.Ticket'Class;
type Itinerary is array(Positive range 1..3) of Tix;
-- Outbound and Inbound itineraries provide different orderings of mixtures
-- of Economy and First_Class. Not that that should make any difference...
Outbound : Itinerary := ( 1 => new Tx.Economy'( 5335, 5, 'B' ),
2 => new Tx.First' ( 67, 1, 'J', Tx.L ),
3 => new Tx.Economy'( 345, 37, 'C' ) );
Inbound : Itinerary := ( 1 => new Tx.First' ( 456, 4, 'F', Tx.SN ),
2 => new Tx.Economy'( 68, 12, 'D' ),
3 => new Tx.Economy'( 5336, 6, 'A' ) );
-- Each call to Display uses a parameter that is a type conversion
-- to the abstract type Ticket.
procedure TC_Convert( I: Itinerary; Leg1,Leg2,Leg3: String ) is
begin
if Rt.Display( Rt.Ticket( I(1).all ) ) /= Leg1 then
Report.Failed( Rt.Display( Rt.Ticket( I(1).all ) ) & " /= " & Leg1 );
end if;
if Rt.Display( Rt.Ticket( I(2).all ) ) /= Leg2 then
Report.Failed( Rt.Display( Rt.Ticket( I(2).all ) ) & " /= " & Leg2 );
end if;
if Rt.Display( Rt.Ticket( I(3).all ) ) /= Leg3 then
Report.Failed( Rt.Display( Rt.Ticket( I(3).all ) ) & " /= " & Leg3 );
end if;
end TC_Convert;
-- Each call to Display uses a parameter that is not a type conversion
procedure TC_Match( I: Itinerary; Leg1,Leg2,Leg3: String ) is
begin
if Rt.Display( I(1).all ) /= Leg1 then
Report.Failed( Rt.Display( I(1).all ) & " /= " & Leg1 );
end if;
if Rt.Display( I(2).all ) /= Leg2 then
Report.Failed( Rt.Display( I(2).all ) & " /= " & Leg2 );
end if;
if Rt.Display( I(3).all ) /= Leg3 then
Report.Failed( Rt.Display( I(3).all ) & " /= " & Leg3 );
end if;
end TC_Match;
begin -- Main test procedure.
Report.Test ("C393012", "Check that a non-abstract subprogram of an "
& "abstract type can be called with a "
& "controlling operand that is a type "
& "conversion to the abstract type. "
& "Check that converting to the class-wide type "
& "of an abstract type inside an operation of "
& "that type causes a redispatch" );
-- Test conversions to abstract type
TC_Convert( Outbound, "Fl: 5335 K Seat: 5B",
"Fl: 67 FL Seat: 1J",
"Fl: 345 K Seat: 37C" );
TCTouch.Validate( "TeTfTe", "Outbound flight (converted)" );
TC_Convert( Inbound, "Fl: 456 FSN Seat: 4F",
"Fl: 68 K Seat: 12D",
"Fl: 5336 K Seat: 6A" );
TCTouch.Validate( "TfTeTe", "Inbound flight (converted)" );
-- Test without conversions to abstract type
TC_Match( Outbound, "Fl: 5335 K Seat: 5B",
"Fl: 67 FL Seat: 1J",
"Fl: 345 K Seat: 37C" );
TCTouch.Validate( "ETeFTfETe", "Outbound flight" );
TC_Match( Inbound, "Fl: 456 FSN Seat: 4F",
"Fl: 68 K Seat: 12D",
"Fl: 5336 K Seat: 6A" );
TCTouch.Validate( "FTfETeETe", "Inbound flight" );
Report.Result;
end C393012;
|
