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comparison gcc/testsuite/ada/acats/tests/cc/cc51006.a @ 111:04ced10e8804

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author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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1 -- CC51006.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, in an instance, each implicit declaration of a primitive
28 -- subprogram of a formal (nontagged) derived type declares a view of
29 -- the corresponding primitive subprogram of the ancestor type, even if
30 -- the subprogram has been overridden for the actual type. Check that for
31 -- a formal derived type with no discriminant part, if the ancestor
32 -- subtype is an unconstrained scalar subtype then the actual may be
33 -- either constrained or unconstrained.
34 --
35 -- TEST DESCRIPTION:
36 -- The formal derived type has no discriminant part, but the ancestor
37 -- subtype is unconstrained, making the formal type unconstrained. Since
38 -- the ancestor subtype is a scalar subtype (not an access or composite
39 -- subtype), the actual may be either constrained or unconstrained.
40 --
41 -- Declare a root type of a class as an unconstrained scalar (use floating
42 -- point). Declare a primitive subprogram of the root type. Declare a
43 -- generic package which has a formal derived type with the scalar root
44 -- type as ancestor. Inside the generic, declare an operation which calls
45 -- the ancestor type's primitive subprogram. Derive both constrained and
46 -- unconstrained types from the root type and override the primitive
47 -- subprogram for each. Declare a constrained subtype of the unconstrained
48 -- derivative. Instantiate the generic package for the derived types and
49 -- the subtype and call the "generic" operation for each one. Confirm that
50 -- in all cases the root type's implementation of the primitive
51 -- subprogram is called.
52 --
53 --
54 -- CHANGE HISTORY:
55 -- 06 Dec 94 SAIC ACVC 2.0
56 --
57 --!
58
59 package CC51006_0 is -- Weight class.
60
61 type Weight_Type is digits 3; -- Root type of class (unconstrained).
62
63 function Weight_To_String (Wt : Weight_Type) return String;
64
65 -- ... Other operations.
66
67 end CC51006_0;
68
69
70 --==================================================================--
71
72
73 package body CC51006_0 is
74
75 -- The implementations of the operations below are purely artificial; the
76 -- validity of their implementations in the context of the abstraction is
77 -- irrelevant to the feature being tested.
78
79 function Weight_To_String (Wt : Weight_Type) return String is
80 begin
81 if Wt > 0.0 then -- Always true for this test.
82 return ("Root type's implementation called");
83 else
84 return ("Unexpected result ");
85 end if;
86 end Weight_To_String;
87
88 end CC51006_0;
89
90
91 --==================================================================--
92
93
94 with CC51006_0; -- Weight class.
95 generic -- Generic weight operations.
96 type Weight is new CC51006_0.Weight_Type;
97 package CC51006_1 is
98
99 procedure Output_Weight (Wt : in Weight; TC_Return : out String);
100
101 -- ... Other operations.
102
103 end CC51006_1;
104
105
106 --==================================================================--
107
108
109 package body CC51006_1 is
110
111
112 -- The implementation of this procedure is purely artificial, and contains
113 -- an artificial parameter for testing purposes: the procedure returns the
114 -- weight string to the caller.
115
116 procedure Output_Weight (Wt : in Weight; TC_Return : out String) is
117 begin
118 TC_Return := Weight_To_String (Wt); -- Should always call root type's
119 end Output_Weight; -- implementation.
120
121
122 end CC51006_1;
123
124
125 --==================================================================--
126
127
128 with CC51006_0; -- Weight class.
129 use CC51006_0;
130 package CC51006_2 is -- Extensions to weight class.
131
132 type Grams is new Weight_Type; -- Unconstrained
133 -- derivative.
134
135 function Weight_To_String (Wt : Grams) return String; -- Overrides root
136 -- type's operation.
137
138 subtype Milligrams is Grams -- Constrained
139 range 0.0 .. 0.999; -- subtype (of der.).
140
141 type Pounds is new Weight_Type -- Constrained
142 range 0.0 .. 500.0; -- derivative.
143
144 function Weight_To_String (Wt : Pounds) return String; -- Overrides root
145 -- type's operation.
146
147 end CC51006_2;
148
149
150 --==================================================================--
151
152
153 package body CC51006_2 is
154
155 -- The implementations of the operations below are purely artificial; the
156 -- validity of their implementations in the context of the abstraction is
157 -- irrelevant to the feature being tested.
158
159 function Weight_To_String (Wt : Grams) return String is
160 begin
161 return ("GRAMS: Should never be called ");
162 end Weight_To_String;
163
164
165 function Weight_To_String (Wt : Pounds) return String is
166 begin
167 return ("POUNDS: Should never be called ");
168 end Weight_To_String;
169
170 end CC51006_2;
171
172
173 --==================================================================--
174
175
176 with CC51006_1; -- Generic weight operations.
177 with CC51006_2; -- Extensions to weight class.
178
179 with Report;
180 procedure CC51006 is
181
182 package Metric_Wts_G is new CC51006_1 (CC51006_2.Grams); -- Unconstr.
183 package Metric_Wts_MG is new CC51006_1 (CC51006_2.Milligrams); -- Constr.
184 package US_Wts is new CC51006_1 (CC51006_2.Pounds); -- Constr.
185
186 Gms : CC51006_2.Grams := 113.451;
187 Mgm : CC51006_2.Milligrams := 0.549;
188 Lbs : CC51006_2.Pounds := 24.52;
189
190
191 subtype TC_Buffers is String (1 .. 33);
192
193 TC_Expected : constant TC_Buffers := "Root type's implementation called";
194 TC_Buffer : TC_Buffers;
195
196 begin
197 Report.Test ("CC51006", "Check that, in an instance, each implicit " &
198 "declaration of a primitive subprogram of a formal " &
199 "(nontagged) type declares a view of the corresponding " &
200 "primitive subprogram of the ancestor type");
201
202
203 Metric_Wts_G.Output_Weight (Gms, TC_Buffer);
204
205 if TC_Buffer /= TC_Expected then
206 Report.Failed ("Root operation not called for unconstrained derivative");
207 end if;
208
209
210 Metric_Wts_MG.Output_Weight (Mgm, TC_Buffer);
211
212 if TC_Buffer /= TC_Expected then
213 Report.Failed ("Root operation not called for constrained subtype");
214 end if;
215
216
217 US_Wts.Output_Weight (Lbs, TC_Buffer);
218
219 if TC_Buffer /= TC_Expected then
220 Report.Failed ("Root operation not called for constrained derivative");
221 end if;
222
223 Report.Result;
224 end CC51006;