Mercurial > hg > CbC > CbC_gcc
comparison gcc/testsuite/ada/acats/tests/cc/cc70001.a @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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1 -- CC70001.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 the template for a generic formal package may be a child | |
28 -- package, and that a child instance which is an instance of the | |
29 -- template may be passed as an actual to the formal package. Check that | |
30 -- the visible part of the generic formal package includes the first list | |
31 -- of basic declarative items of the package specification. | |
32 -- | |
33 -- TEST DESCRIPTION: | |
34 -- Declare a list abstraction in a generic package which manages lists of | |
35 -- elements of any nonlimited type. Declare a generic child package of | |
36 -- this package which defines additional list operations. Declare a | |
37 -- generic subprogram which operates on lists of elements of discrete | |
38 -- types. Provide the generic subprogram with three formal parameters: | |
39 -- (1) a formal discrete type which represents a list element type, (2) | |
40 -- a generic formal package with the parent list generic as template, and | |
41 -- (3) a generic formal package with the child list generic as template. | |
42 -- Use the formal discrete type as the generic formal actual part for the | |
43 -- parent formal package. In the main program, declare an instance of | |
44 -- parent, then declare an instance of the child which is itself a child | |
45 -- the parent's instance. Pass these instances as actuals to the generic | |
46 -- subprogram instance. | |
47 -- | |
48 -- | |
49 -- CHANGE HISTORY: | |
50 -- 06 Dec 94 SAIC ACVC 2.0 | |
51 -- 05 Nov 95 SAIC ACVC 2.0.1 fixes: Corrected syntax of formal | |
52 -- package declaration. | |
53 -- 27 Feb 97 PWB.CTA Added an elaboration pragma. | |
54 --! | |
55 | |
56 generic | |
57 type Element_Type is private; -- List elems may be of any nonlimited type. | |
58 package CC70001_0 is -- List abstraction. | |
59 | |
60 type List_Type is limited private; | |
61 | |
62 | |
63 -- Return true if current element is last in the list. | |
64 function End_Of_List (L : List_Type) return Boolean; | |
65 | |
66 -- Set "current" pointer to first list element. | |
67 procedure Reset (L : in out List_Type); | |
68 | |
69 private | |
70 | |
71 type Node_Type; | |
72 type Node_Pointer is access Node_Type; | |
73 | |
74 type Node_Type is record | |
75 Item : Element_Type; | |
76 Next : Node_Pointer; | |
77 end record; | |
78 | |
79 type List_Type is record | |
80 First : Node_Pointer; | |
81 Current : Node_Pointer; | |
82 Last : Node_Pointer; | |
83 end record; | |
84 | |
85 end CC70001_0; | |
86 | |
87 | |
88 --==================================================================-- | |
89 | |
90 | |
91 package body CC70001_0 is | |
92 | |
93 function End_Of_List (L : List_Type) return Boolean is | |
94 begin | |
95 return (L.Current = null); | |
96 end End_Of_List; | |
97 | |
98 | |
99 procedure Reset (L : in out List_Type) is | |
100 begin | |
101 L.Current := L.First; -- Set "current" pointer to first | |
102 end Reset; -- list element. | |
103 | |
104 end CC70001_0; | |
105 | |
106 | |
107 --==================================================================-- | |
108 | |
109 | |
110 -- Child must be generic since parent is generic. A formal parameter for | |
111 -- "element type" can not be provided here, because then the type of list | |
112 -- element assumed by these new operations would be different from that | |
113 -- defined by the list type declared in the parent. | |
114 | |
115 generic | |
116 package CC70001_0.CC70001_1 is -- Additional list operations. | |
117 | |
118 -- Read from current element and advance "current" pointer. | |
119 procedure Read_Element (L : in out List_Type; E : out Element_Type); | |
120 | |
121 -- Write to current element and advance "current" pointer. | |
122 procedure Write_Element (L : in out List_Type; E : in Element_Type); | |
123 | |
124 -- Add element to end of list. | |
125 procedure Add_Element (L : in out List_Type; E : in Element_Type); | |
126 | |
127 end CC70001_0.CC70001_1; | |
128 | |
129 | |
130 --==================================================================-- | |
131 | |
132 | |
133 package body CC70001_0.CC70001_1 is | |
134 | |
135 procedure Read_Element (L : in out List_Type; E : out Element_Type) is | |
136 begin | |
137 -- ... Error-checking code omitted for brevity. | |
138 E := L.Current.Item; -- Retrieve current element. | |
139 L.Current := L.Current.Next; -- Advance "current" pointer. | |
140 end Read_Element; | |
141 | |
142 | |
143 procedure Write_Element (L : in out List_Type; E : in Element_Type) is | |
144 begin | |
145 -- ... Error-checking code omitted for brevity. | |
146 L.Current.Item := E; -- Write to current element. | |
147 L.Current := L.Current.Next; -- Advance "current" pointer. | |
148 end Write_Element; | |
149 | |
150 | |
151 procedure Add_Element (L : in out List_Type; E : in Element_Type) is | |
152 New_Node : Node_Pointer := new Node_Type'(E, null); | |
153 begin | |
154 if L.First = null then -- No elements in list, so add new | |
155 L.First := New_Node; -- element at beginning of list. | |
156 else | |
157 L.Last.Next := New_Node; -- Add new element at end of list. | |
158 end if; | |
159 L.Last := New_Node; -- Set last-in-list pointer. | |
160 end Add_Element; | |
161 | |
162 end CC70001_0.CC70001_1; | |
163 | |
164 | |
165 --==================================================================-- | |
166 | |
167 | |
168 with CC70001_0.CC70001_1; -- Generic list abstraction + additional operations. | |
169 generic | |
170 | |
171 -- Import the list abstraction defined in CC70001_0, as well as the | |
172 -- additional operations defined in CC70001_0.CC70001_1. Declare a formal | |
173 -- discrete type. Restrict this generic procedure to operate only on lists | |
174 -- of discrete elements by passing the formal discrete type as an actual | |
175 -- parameter to the formal (parent) package. | |
176 | |
177 type Elem_Type is (<>); -- Discrete types only. | |
178 with package List_Mgr is new CC70001_0 (Elem_Type); | |
179 with package List_Ops is new List_Mgr.CC70001_1 (<>); | |
180 | |
181 procedure CC70001_2 (L : in out List_Mgr.List_Type); | |
182 | |
183 | |
184 --==================================================================-- | |
185 | |
186 | |
187 procedure CC70001_2 (L : in out List_Mgr.List_Type) is | |
188 begin | |
189 List_Mgr.Reset (L); | |
190 while not List_Mgr.End_Of_List (L) loop | |
191 List_Ops.Write_Element (L, Elem_Type'First); | |
192 end loop; | |
193 end CC70001_2; | |
194 | |
195 | |
196 --==================================================================-- | |
197 | |
198 | |
199 package CC70001_3 is | |
200 | |
201 type Points is range 0 .. 10; | |
202 | |
203 -- ... Various other types used by the application. | |
204 | |
205 end CC70001_3; | |
206 | |
207 | |
208 -- No body for CC70001_3; | |
209 | |
210 | |
211 --==================================================================-- | |
212 | |
213 | |
214 -- Declare instances of the generic list packages for the discrete type. | |
215 -- In order to establish that the type passed as an actual to the parent | |
216 -- generic (CC70001_0) is the one utilized by the child generic (CC70001_1), | |
217 -- the instance of the child must itself be declared as a child of the | |
218 -- instance of the parent. Since only library units may have or be children, | |
219 -- both instances must be library units. | |
220 | |
221 with CC70001_0; -- Generic list abstraction. | |
222 with CC70001_3; -- Package containing discrete type declaration. | |
223 pragma Elaborate (CC70001_0); | |
224 package CC70001_4 is new CC70001_0 (CC70001_3.Points); | |
225 | |
226 with CC70001_0.CC70001_1; -- Generic extension to list abstraction. | |
227 with CC70001_4; | |
228 package CC70001_4.CC70001_5 is new CC70001_4.CC70001_1; | |
229 | |
230 | |
231 --==================================================================-- | |
232 | |
233 | |
234 with CC70001_2; -- Generic "zeroing" op for lists of discrete types. | |
235 with CC70001_3; -- Types for application. | |
236 with CC70001_4.CC70001_5; -- Discrete list abstraction + additional ops. | |
237 | |
238 with Report; | |
239 procedure CC70001 is | |
240 | |
241 package Lists_Of_Scores renames CC70001_4; | |
242 package Score_Ops renames CC70001_4.CC70001_5; | |
243 | |
244 Scores : Lists_Of_Scores.List_Type; -- List of points. | |
245 | |
246 procedure Reset_All_Scores is new CC70001_2 -- Operation on lists of | |
247 (Elem_Type => CC70001_3.Points, -- points. | |
248 List_Mgr => Lists_Of_Scores, | |
249 List_Ops => Score_Ops); | |
250 | |
251 | |
252 -- Begin test code declarations: ----------------------- | |
253 | |
254 type TC_Score_Array is array (1 .. 3) of CC70001_3.Points; | |
255 | |
256 TC_Initial_Values : constant TC_Score_Array := (2, 4, 6); | |
257 TC_Final_Values : constant TC_Score_Array := (0, 0, 0); | |
258 | |
259 TC_Correct_Initial_Values : Boolean := False; | |
260 TC_Correct_Final_Values : Boolean := False; | |
261 | |
262 | |
263 procedure TC_Initialize_List (L : in out Lists_of_Scores.List_Type) is | |
264 begin -- Initial list contains 3 scores | |
265 for I in TC_Score_Array'Range loop -- with the values 2, 4, and 6. | |
266 Score_Ops.Add_Element (L, TC_Initial_Values(I)); | |
267 end loop; | |
268 end TC_Initialize_List; | |
269 | |
270 | |
271 procedure TC_Verify_List (L : in out Lists_of_Scores.List_Type; | |
272 Expected : in TC_Score_Array; | |
273 OK : out Boolean) is | |
274 Actual : TC_Score_Array; | |
275 begin -- Verify that all scores have been | |
276 Lists_of_Scores.Reset (L); -- set to zero. | |
277 for I in TC_Score_Array'Range loop | |
278 Score_Ops.Read_Element (L, Actual(I)); | |
279 end loop; | |
280 OK := (Actual = Expected); | |
281 end TC_Verify_List; | |
282 | |
283 -- End test code declarations. ------------------------- | |
284 | |
285 | |
286 begin | |
287 Report.Test ("CC70001", "Check that the template for a generic formal " & | |
288 "package may be a child package, and that a child instance " & | |
289 "which is an instance of the template may be passed as an " & | |
290 "actual to the formal package. Check that the visible part " & | |
291 "of the generic formal package includes the first list of " & | |
292 "basic declarative items of the package specification"); | |
293 | |
294 TC_Initialize_List (Scores); | |
295 TC_Verify_List (Scores, TC_Initial_Values, TC_Correct_Initial_Values); | |
296 | |
297 if not TC_Correct_Initial_Values then | |
298 Report.Failed ("List contains incorrect initial values"); | |
299 end if; | |
300 | |
301 Reset_All_Scores (Scores); | |
302 TC_Verify_List (Scores, TC_Final_Values, TC_Correct_Final_Values); | |
303 | |
304 if not TC_Correct_Final_Values then | |
305 Report.Failed ("List contains incorrect final values"); | |
306 end if; | |
307 | |
308 Report.Result; | |
309 end CC70001; |