1 |
149 |
jeremybenn |
-- CB20003.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 exceptions can be raised, reraised, and handled in an
|
28 |
|
|
-- accessed subprogram.
|
29 |
|
|
--
|
30 |
|
|
--
|
31 |
|
|
-- TEST DESCRIPTION:
|
32 |
|
|
-- Declare a record type, with one component being an access to
|
33 |
|
|
-- subprogram type. Various subprograms are defined to fit the profile
|
34 |
|
|
-- of this access type, such that the record component can refer to
|
35 |
|
|
-- any of the subprograms.
|
36 |
|
|
--
|
37 |
|
|
-- Each of the subprograms raises a different exception, based on the
|
38 |
|
|
-- value of an input parameter. Exceptions are 1) raised, handled with
|
39 |
|
|
-- an others handler, reraised and propagated to main to be handled in
|
40 |
|
|
-- a specific handler; 2) raised, handled in a specific handler, reraised
|
41 |
|
|
-- and propagated to the main to be handled in an others handler there,
|
42 |
|
|
-- and 3) raised and propagated directly to the caller by the subprogram.
|
43 |
|
|
--
|
44 |
|
|
-- Boolean variables are set throughout the test to ensure that correct
|
45 |
|
|
-- exception processing has occurred, and these variables are verified at
|
46 |
|
|
-- the conclusion of the test.
|
47 |
|
|
--
|
48 |
|
|
--
|
49 |
|
|
-- CHANGE HISTORY:
|
50 |
|
|
-- 06 Dec 94 SAIC ACVC 2.0
|
51 |
|
|
--
|
52 |
|
|
--!
|
53 |
|
|
|
54 |
|
|
package CB20003_0 is -- package Push_Buttons
|
55 |
|
|
|
56 |
|
|
|
57 |
|
|
Non_Default_Priority,
|
58 |
|
|
Non_Alert_Priority,
|
59 |
|
|
Non_Emergency_Priority : exception;
|
60 |
|
|
|
61 |
|
|
Handled_With_Others,
|
62 |
|
|
Reraised_In_Subprogram,
|
63 |
|
|
Handled_In_Caller : Boolean := False;
|
64 |
|
|
|
65 |
|
|
subtype Priority_Type is Integer range 1 .. 10;
|
66 |
|
|
|
67 |
|
|
Default_Priority : Priority_Type := 1;
|
68 |
|
|
Alert_Priority : Priority_Type := 3;
|
69 |
|
|
Emergency_Priority : Priority_Type := 5;
|
70 |
|
|
|
71 |
|
|
|
72 |
|
|
type Button is tagged private; -- Private tagged type.
|
73 |
|
|
|
74 |
|
|
type Button_Response_Ptr is access procedure (P : in Priority_Type;
|
75 |
|
|
B : in out Button);
|
76 |
|
|
|
77 |
|
|
|
78 |
|
|
-- Procedures accessible with Button_Response_Ptr type.
|
79 |
|
|
|
80 |
|
|
procedure Default_Response (P : in Priority_Type;
|
81 |
|
|
B : in out Button);
|
82 |
|
|
|
83 |
|
|
procedure Alert_Response (P : in Priority_Type;
|
84 |
|
|
B : in out Button);
|
85 |
|
|
|
86 |
|
|
procedure Emergency_Response (P : in Priority_Type;
|
87 |
|
|
B : in out Button);
|
88 |
|
|
|
89 |
|
|
|
90 |
|
|
|
91 |
|
|
procedure Push (B : in out Button;
|
92 |
|
|
P : in Priority_Type);
|
93 |
|
|
|
94 |
|
|
procedure Set_Response (B : in out Button;
|
95 |
|
|
R : in Button_Response_Ptr);
|
96 |
|
|
|
97 |
|
|
private
|
98 |
|
|
|
99 |
|
|
type Button is tagged
|
100 |
|
|
record
|
101 |
|
|
Priority : Priority_Type := Default_Priority;
|
102 |
|
|
Response : Button_Response_Ptr := Default_Response'Access;
|
103 |
|
|
end record;
|
104 |
|
|
|
105 |
|
|
|
106 |
|
|
end CB20003_0; -- package Push_Buttons
|
107 |
|
|
|
108 |
|
|
|
109 |
|
|
--=================================================================--
|
110 |
|
|
|
111 |
|
|
|
112 |
|
|
with Report;
|
113 |
|
|
|
114 |
|
|
package body CB20003_0 is -- package Push_Buttons
|
115 |
|
|
|
116 |
|
|
|
117 |
|
|
procedure Push (B : in out Button;
|
118 |
|
|
P : in Priority_Type) is
|
119 |
|
|
begin -- Invoking subprogram designated
|
120 |
|
|
B.Response (P, B); -- by access value.
|
121 |
|
|
end Push;
|
122 |
|
|
|
123 |
|
|
|
124 |
|
|
procedure Set_Response (B : in out Button;
|
125 |
|
|
R : in Button_Response_Ptr) is
|
126 |
|
|
begin
|
127 |
|
|
B.Response := R; -- Set procedure value in record
|
128 |
|
|
end Set_Response;
|
129 |
|
|
|
130 |
|
|
|
131 |
|
|
procedure Default_Response (P : in Priority_Type;
|
132 |
|
|
B : in out Button) is
|
133 |
|
|
begin
|
134 |
|
|
if (P > Default_Priority) then
|
135 |
|
|
raise Non_Default_Priority;
|
136 |
|
|
Report.Failed ("Exception not raised in procedure body");
|
137 |
|
|
else
|
138 |
|
|
B.Priority := P;
|
139 |
|
|
end if;
|
140 |
|
|
exception
|
141 |
|
|
when others => -- Catch exception with others handler
|
142 |
|
|
Handled_With_Others := True; -- Successfully caught with "others"
|
143 |
|
|
raise;
|
144 |
|
|
Report.Failed ("Exception not reraised in handler");
|
145 |
|
|
end Default_Response;
|
146 |
|
|
|
147 |
|
|
|
148 |
|
|
|
149 |
|
|
procedure Alert_Response (P : in Priority_Type;
|
150 |
|
|
B : in out Button) is
|
151 |
|
|
begin
|
152 |
|
|
if (P > Alert_Priority) then
|
153 |
|
|
raise Non_Alert_Priority;
|
154 |
|
|
Report.Failed ("Exception not raised in procedure body");
|
155 |
|
|
else
|
156 |
|
|
B.Priority := P;
|
157 |
|
|
end if;
|
158 |
|
|
exception
|
159 |
|
|
when Non_Alert_Priority =>
|
160 |
|
|
Reraised_In_Subprogram := True;
|
161 |
|
|
raise; -- Propagate to caller.
|
162 |
|
|
Report.Failed ("Exception not reraised in procedure excpt handler");
|
163 |
|
|
when others =>
|
164 |
|
|
Report.Failed ("Incorrect exception raised/handled");
|
165 |
|
|
end Alert_Response;
|
166 |
|
|
|
167 |
|
|
|
168 |
|
|
|
169 |
|
|
procedure Emergency_Response (P : in Priority_type;
|
170 |
|
|
B : in out Button) is
|
171 |
|
|
begin
|
172 |
|
|
if (P > Emergency_Priority) then
|
173 |
|
|
raise Non_Emergency_Priority;
|
174 |
|
|
Report.Failed ("Exception not raised in procedure body");
|
175 |
|
|
else
|
176 |
|
|
B.Priority := P;
|
177 |
|
|
end if;
|
178 |
|
|
-- No exception handler here, exception will be propagated to caller.
|
179 |
|
|
end Emergency_Response;
|
180 |
|
|
|
181 |
|
|
|
182 |
|
|
end CB20003_0; -- package Push_Buttons
|
183 |
|
|
|
184 |
|
|
|
185 |
|
|
--=================================================================--
|
186 |
|
|
|
187 |
|
|
|
188 |
|
|
with Report;
|
189 |
|
|
with CB20003_0; -- package Push_Buttons
|
190 |
|
|
|
191 |
|
|
procedure CB20003 is
|
192 |
|
|
|
193 |
|
|
package Push_Buttons renames CB20003_0;
|
194 |
|
|
|
195 |
|
|
Console_Button : Push_Buttons.Button;
|
196 |
|
|
|
197 |
|
|
begin
|
198 |
|
|
|
199 |
|
|
Report.Test ("CB20003", "Check that exceptions can be raised, " &
|
200 |
|
|
"reraised, and handled in a subprogram " &
|
201 |
|
|
"referenced by an access to subprogram value");
|
202 |
|
|
|
203 |
|
|
|
204 |
|
|
Default_Response_Processing: -- The exception
|
205 |
|
|
-- Handled_With_Others is to
|
206 |
|
|
-- be caught with an others
|
207 |
|
|
-- handler in Default_Resp.,
|
208 |
|
|
-- reraised, and handled with
|
209 |
|
|
-- a specific handler here.
|
210 |
|
|
begin
|
211 |
|
|
|
212 |
|
|
Push_Buttons.Push (Console_Button, -- Raise exception that will
|
213 |
|
|
Report.Ident_Int(2)); -- be handled in procedure.
|
214 |
|
|
exception
|
215 |
|
|
when Push_Buttons.Non_Default_Priority =>
|
216 |
|
|
if not Push_Buttons.Handled_With_Others then -- Not reraised in
|
217 |
|
|
-- procedure.
|
218 |
|
|
Report.Failed
|
219 |
|
|
("Exception not handled/reraised in procedure");
|
220 |
|
|
end if;
|
221 |
|
|
when others =>
|
222 |
|
|
Report.Failed ("Exception handled in " &
|
223 |
|
|
" Default_Response_Processing block");
|
224 |
|
|
end Default_Response_Processing;
|
225 |
|
|
|
226 |
|
|
|
227 |
|
|
|
228 |
|
|
Alert_Response_Processing:
|
229 |
|
|
begin
|
230 |
|
|
|
231 |
|
|
Push_Buttons.Set_Response (Console_Button,
|
232 |
|
|
Push_Buttons.Alert_Response'access);
|
233 |
|
|
|
234 |
|
|
Push_Buttons.Push (Console_Button, -- Raise exception that will
|
235 |
|
|
Report.Ident_Int(4)); -- be handled in procedure,
|
236 |
|
|
-- reraised, and propagated
|
237 |
|
|
-- to caller.
|
238 |
|
|
Report.Failed ("Exception not propagated to caller " &
|
239 |
|
|
"in Alert_Response_Processing block");
|
240 |
|
|
|
241 |
|
|
exception
|
242 |
|
|
when Push_Buttons.Non_Alert_Priority =>
|
243 |
|
|
if not Push_Buttons.Reraised_In_Subprogram then -- Not reraised in
|
244 |
|
|
-- procedure.
|
245 |
|
|
Report.Failed ("Exception not reraised in procedure");
|
246 |
|
|
end if;
|
247 |
|
|
when others =>
|
248 |
|
|
Report.Failed ("Exception handled in " &
|
249 |
|
|
" Alert_Response_Processing block");
|
250 |
|
|
end Alert_Response_Processing;
|
251 |
|
|
|
252 |
|
|
|
253 |
|
|
|
254 |
|
|
Emergency_Response_Processing:
|
255 |
|
|
begin
|
256 |
|
|
|
257 |
|
|
Push_Buttons.Set_Response (Console_Button,
|
258 |
|
|
Push_Buttons.Emergency_Response'access);
|
259 |
|
|
|
260 |
|
|
Push_Buttons.Push (Console_Button, -- Raise exception that will
|
261 |
|
|
Report.Ident_Int(6)); -- be propagated directly to
|
262 |
|
|
-- caller.
|
263 |
|
|
Report.Failed ("Exception not propagated to caller " &
|
264 |
|
|
"in Emergency_Response_Processing block");
|
265 |
|
|
|
266 |
|
|
exception
|
267 |
|
|
when Push_Buttons.Non_Emergency_Priority =>
|
268 |
|
|
Push_Buttons.Handled_In_Caller := True;
|
269 |
|
|
when others =>
|
270 |
|
|
Report.Failed ("Exception handled in " &
|
271 |
|
|
" Emergency_Response_Processing block");
|
272 |
|
|
end Emergency_Response_Processing;
|
273 |
|
|
|
274 |
|
|
|
275 |
|
|
|
276 |
|
|
if not (Push_Buttons.Handled_With_Others and
|
277 |
|
|
Push_Buttons.Reraised_In_Subprogram and
|
278 |
|
|
Push_Buttons.Handled_In_Caller )
|
279 |
|
|
then
|
280 |
|
|
Report.Failed ("Incorrect exception handling in referenced subprograms");
|
281 |
|
|
end if;
|
282 |
|
|
|
283 |
|
|
|
284 |
|
|
Report.Result;
|
285 |
|
|
|
286 |
|
|
end CB20003;
|