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
|
-- CB41001.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 the 'Identity attribute returns the unique identity of an
-- exception. Check that the Raise_Exception procedure can raise an
-- exception that is specified through the use of the 'Identity attribute,
-- and that Reraise_Occurrence can re-raise an exception occurrence
-- using an exception choice parameter.
--
-- TEST DESCRIPTION:
-- This test uses the capability of the 'Identity attribute, which
-- returns the unique identity of an exception, as an Exception_Id
-- result. This result is used as an input parameter to the procedure
-- Raise_Exception. The exception that results is handled, propagated
-- using the Reraise_Occurrence procedure, and handled again.
-- The above actions are performed for both a user-defined and a
-- predefined exception.
--
--
-- CHANGE HISTORY:
-- 06 Dec 94 SAIC ACVC 2.0
-- 11 Nov 96 SAIC ACVC 2.1: Modified Propagate_User_Exception.
--
--!
with Report;
with Ada.Exceptions;
procedure CB41001 is
begin
Report.Test ("CB41001", "Check that the 'Identity attribute returns " &
"the unique identity of an exception. Check " &
"that the 'Identity attribute is of type " &
"Exception_Id. Check that the " &
"Raise_Exception procedure can raise an " &
"exception that is specified through the " &
"use of the 'Identity attribute");
Test_Block:
declare
Check_Points : constant := 5;
type Check_Point_Array_Type is array (1..Check_Points) of Boolean;
-- Global array used to track the processing path through the test.
TC_Check_Points : Check_Point_Array_Type := (others => False);
A_User_Defined_Exception : Exception;
An_Exception_ID : Ada.Exceptions.Exception_Id :=
Ada.Exceptions.Null_Id;
procedure Propagate_User_Exception is
Hidden_Exception : Exception;
begin
-- Use the 'Identity function to store the unique identity of a
-- user defined exception into a variable of type Exception_Id.
An_Exception_ID := A_User_Defined_Exception'Identity;
-- Raise this user defined exception using the result of the
-- 'Identity attribute.
Ada.Exceptions.Raise_Exception(E => An_Exception_Id);
Report.Failed("User defined exception not raised by " &
"procedure Propagate_User_Exception");
exception
when Proc_Excpt : A_User_Defined_Exception => -- Expected exception.
begin
-- By raising a different exception at this point, the
-- information associated with A_User_Defined_Exception must
-- be correctly stacked internally.
Ada.Exceptions.Raise_Exception(Hidden_Exception'Identity);
Report.Failed("Hidden_Exception not raised by " &
"procedure Propagate_User_Exception");
exception
when others =>
TC_Check_Points(1) := True;
-- Reraise the original exception, which will be propagated
-- outside the scope of this procedure.
Ada.Exceptions.Reraise_Occurrence(Proc_Excpt);
Report.Failed("User defined exception not reraised");
end;
when others =>
Report.Failed("Unexpected exception raised by " &
"Procedure Propagate_User_Exception");
end Propagate_User_Exception;
begin
User_Exception_Block:
begin
-- Call procedure to raise, handle, and reraise a user defined
-- exception.
Propagate_User_Exception;
Report.Failed("User defined exception not propagated from " &
"procedure Propagate_User_Exception");
exception
when A_User_Defined_Exception => -- Expected exception.
TC_Check_Points(2) := True;
when others =>
Report.Failed
("Unexpected exception handled in User_Exception_Block");
end User_Exception_Block;
Predefined_Exception_Block:
begin
Inner_Block:
begin
begin
-- Use the 'Identity attribute as an input parameter to the
-- Raise_Exception procedure.
Ada.Exceptions.Raise_Exception(Constraint_Error'Identity);
Report.Failed("Constraint_Error not raised in Inner_Block");
exception
when Excpt : Constraint_Error => -- Expected exception.
TC_Check_Points(3) := True;
-- Reraise the exception.
Ada.Exceptions.Reraise_Occurrence(X => Excpt);
Report.Failed("Predefined exception not raised from " &
"within the exception handler - 1");
when others =>
Report.Failed("Incorrect result from attempt to raise " &
"Constraint_Error using the 'Identity " &
"attribute - 1");
end;
Report.Failed("Constraint_Error not reraised in Inner_Block");
exception
when Block_Excpt : Constraint_Error => -- Expected exception.
TC_Check_Points(4) := True;
-- Reraise the exception in a scope where the exception
-- was not originally raised.
Ada.Exceptions.Reraise_Occurrence(X => Block_Excpt);
Report.Failed("Predefined exception not raised from " &
"within the exception handler - 2");
when others =>
Report.Failed("Incorrect result from attempt to raise " &
"Constraint_Error using the 'Identity " &
"attribute - 2");
end Inner_Block;
Report.Failed("Exception not propagated from Inner_Block");
exception
when Constraint_Error => -- Expected exception.
TC_Check_Points(5) := True;
when others =>
Report.Failed("Unexpected exception handled after second " &
"reraise of Constraint_Error");
end Predefined_Exception_Block;
-- Verify the processing path taken through the test.
for i in 1..Check_Points loop
if not TC_Check_Points(i) then
Report.Failed("Incorrect processing path taken through test, " &
"didn't pass check point #" & Integer'Image(i));
end if;
end loop;
exception
when others => Report.Failed ("Exception raised in Test_Block");
end Test_Block;
Report.Result;
end CB41001;
|
