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date Fri, 27 Oct 2017 22:46:09 +0900
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1 -- CXB3009.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 function To_Chars_Ptr will return a Null_Ptr value
28 -- when the parameter Item is null. If the parameter Item is not null,
29 -- and references a chars_array object that does contain the char nul,
30 -- and parameter Nul_Check is True, check that To_Chars_Ptr performs a
31 -- pointer conversion from char_array_access type to chars_ptr type.
32 -- Check that if parameter Item is not null, and references a
33 -- chars_array object that does not contain nul, and parameter Nul_Check
34 -- is True, the To_Chars_Ptr function will propagate Terminator_Error.
35 -- Check that if parameter Item is not null, and parameter Nul_Check
36 -- is False, check that To_Chars_Ptr performs a pointer conversion from
37 -- char_array_access type to chars_ptr type.
38 --
39 -- Check that the New_Char_Array function will return a chars_ptr type
40 -- pointer to an allocated object that has been initialized with
41 -- the value of parameter Chars.
42 --
43 -- Check that the function New_String returns a chars_ptr initialized
44 -- to a nul-terminated string having the value of the Str parameter.
45 --
46 -- TEST DESCRIPTION:
47 -- This test uses a variety of of string, char_array,
48 -- char_array_access and char_ptr values in order to validate the
49 -- functions under test, and results are compared for both length
50 -- and content.
51 --
52 -- This test assumes that the following characters are all included
53 -- in the implementation defined type Interfaces.C.char:
54 -- ' ', 'a'..'z', and 'A'.. 'Z'.
55 --
56 -- APPLICABILITY CRITERIA:
57 -- This test is applicable to all implementations that provide
58 -- package Interfaces.C.Strings. If an implementation provides
59 -- package Interfaces.C.Strings, this test must compile, execute, and
60 -- report "PASSED".
61 --
62 --
63 -- CHANGE HISTORY:
64 -- 20 Sep 95 SAIC Initial prerelease version.
65 -- 09 May 96 SAIC Incorporated reviewer comments for ACVC 2.1.
66 -- 01 DEC 97 EDS Remove incorrect block of code (previously
67 -- lines 264-287)
68 -- 14 Sep 99 RLB Added check for behavior of To_Chars_Ptr when
69 -- Nul_Check => False. (From Technical
70 -- Corrigendum 1).
71 --!
72
73 with Report;
74 with Interfaces.C.Strings; -- N/A => ERROR
75 with Ada.Characters.Latin_1;
76 with Ada.Exceptions;
77 with Ada.Strings.Fixed;
78
79 procedure CXB3009 is
80 begin
81
82 Report.Test ("CXB3009", "Check that functions To_Chars_Ptr, " &
83 "New_Chars_Array, and New_String produce " &
84 "correct results");
85
86 Test_Block:
87 declare
88
89 package IC renames Interfaces.C;
90 package ICS renames Interfaces.C.Strings;
91 use Ada.Exceptions;
92
93 use type IC.char_array;
94 use type IC.size_t;
95 use type ICS.chars_ptr;
96
97 Null_Char_Array_Access : constant ICS.char_array_access := null;
98
99 Test_String : constant String := "Test String";
100 String_With_nul : String(1..6) := "Addnul";
101 String_Without_nul : String(1..6) := "No nul";
102
103 Char_Array_With_nul : IC.char_array(0..6) :=
104 IC.To_C(String_With_nul, True);
105 Char_Array_Without_nul : IC.char_array(0..5) :=
106 IC.To_C(String_Without_nul, False);
107 Char_Array_W_nul_Ptr : ICS.char_array_access :=
108 new IC.char_array'(Char_Array_With_nul);
109 Char_Array_WO_nul_Ptr : ICS.char_array_access :=
110 new IC.char_array'(Char_Array_Without_nul);
111
112 TC_chars_ptr : ICS.chars_ptr;
113
114 TC_size_t : IC.size_t := IC.size_t'First;
115
116
117 begin
118
119 -- Check that the function To_Chars_Ptr will return a Null_Ptr value
120 -- when the parameter Item is null.
121
122 if ICS.To_Chars_Ptr(Item => Null_Char_Array_Access,
123 Nul_Check => False) /= ICS.Null_Ptr or
124 ICS.To_Chars_Ptr(Null_Char_Array_Access,
125 Nul_Check => True) /= ICS.Null_Ptr or
126 ICS.To_Chars_Ptr(Null_Char_Array_Access) /= ICS.Null_Ptr
127 then
128 Report.Failed("Incorrect result from function To_Chars_Ptr " &
129 "with parameter Item being a null value");
130 end if;
131
132
133 -- Check that if the parameter Item is not null, and references a
134 -- chars_array object that does contain the nul char, and parameter
135 -- Nul_Check is True, function To_Chars_Ptr performs a pointer
136 -- conversion from char_array_access type to chars_ptr type.
137
138 begin
139 TC_chars_ptr := ICS.To_Chars_Ptr(Item => Char_Array_W_nul_Ptr,
140 Nul_Check => True);
141
142 if ICS.Value(TC_chars_ptr) /= String_With_nul or
143 ICS.Value(TC_chars_ptr) /= Char_Array_With_nul
144 then
145 Report.Failed("Incorrect result from function To_Chars_Ptr " &
146 "with parameter Item being non-null and " &
147 "containing the nul char");
148 end if;
149 exception
150 when IC.Terminator_Error =>
151 Report.Failed("Terminator_Error raised during the validation " &
152 "of Function To_Chars_Ptr");
153 when others =>
154 Report.Failed("Unexpected exception raised during the " &
155 "validation of Function To_Chars_Ptr");
156 end;
157
158 -- Check that if parameter Item is not null, and references a
159 -- chars_array object that does not contain nul, and parameter
160 -- Nul_Check is True, the To_Chars_Ptr function will propagate
161 -- Terminator_Error.
162
163 begin
164 TC_chars_ptr := ICS.To_Chars_Ptr(Char_Array_WO_nul_Ptr, True);
165 Report.Failed("Terminator_Error was not raised by function " &
166 "To_Chars_Ptr when given a parameter Item that " &
167 "is non-null, and does not contain the nul " &
168 "char, but parameter Nul_Check is True");
169 TC_size_t := ICS.Strlen(TC_chars_ptr); -- Use TC_chars_ptr to
170 -- defeat optimization;
171 exception
172 when IC.Terminator_Error => null; -- Expected exception.
173 when others =>
174 Report.Failed("Incorrect exception raised when function " &
175 "To_Chars_Ptr is given a parameter Item that " &
176 "is non-null, and does not contain the nul " &
177 "char, but parameter Nul_Check is True");
178 end;
179
180 -- Check that if the parameter Item is not null, and parameter
181 -- Nul_Check is False, function To_Chars_Ptr performs a pointer
182 -- conversion from char_array_access type to chars_ptr type.
183
184 begin
185 TC_chars_ptr := ICS.To_Chars_Ptr(Item => Char_Array_WO_nul_Ptr,
186 Nul_Check => False);
187
188 if ICS.Value(TC_chars_ptr, 6) /= String_Without_nul or
189 ICS.Value(TC_chars_ptr, 6) /= Char_Array_Without_nul
190 then
191 Report.Failed("Incorrect result from function To_Chars_Ptr " &
192 "with parameter Item being non-null and " &
193 "Nul_Check False");
194 end if;
195 exception
196 when IC.Terminator_Error =>
197 Report.Failed("Terminator_Error raised during the validation " &
198 "of Function To_Chars_Ptr");
199 when others =>
200 Report.Failed("Unexpected exception raised during the " &
201 "validation of Function To_Chars_Ptr");
202 end;
203
204
205 -- Check that the New_Char_Array function will return a chars_ptr type
206 -- pointer to an allocated object that has been initialized with
207 -- the value of parameter Chars.
208 TC_chars_ptr := ICS.New_String("");
209 ICS.Free(TC_chars_ptr); -- Reset the chars_ptr to Null_Ptr;
210
211 if TC_chars_ptr /= ICS.Null_Ptr then
212 Report.Failed("Reset of TC_chars_ptr to Null not successful - 1");
213 end if;
214
215 TC_chars_ptr := ICS.New_Char_Array(Chars => Char_Array_With_nul);
216
217 if TC_chars_ptr = ICS.Null_Ptr then -- Check allocation.
218 Report.Failed
219 ("No allocation took place in call to New_Char_Array " &
220 "with a non-null char_array parameter containing a " &
221 "terminating nul char");
222 end if;
223
224 -- Length of allocated array is determined using Strlen since array
225 -- is nul terminated. Contents of array are validated using Value.
226
227 if ICS.Value (TC_chars_ptr, Length => 7) /= Char_Array_With_nul or
228 ICS.Strlen(Item => TC_chars_ptr) /= 6
229 then
230 Report.Failed
231 ("Incorrect length of allocated char_array resulting " &
232 "from call of New_Char_Array with a non-null " &
233 "char_array parameter containing a terminating nul char");
234 end if;
235
236 ICS.Free(TC_chars_ptr); -- Reset the chars_ptr to Null_Ptr;
237 if TC_chars_ptr /= ICS.Null_Ptr then
238 Report.Failed("Reset of TC_chars_ptr to Null not successful - 2");
239 end if;
240
241 TC_chars_ptr := ICS.New_Char_Array(Chars => Char_Array_Without_nul);
242
243 if TC_chars_ptr = ICS.Null_Ptr then -- Check allocation.
244 Report.Failed
245 ("No allocation took place in call to New_Char_Array " &
246 "with a non-null char_array parameter that did not " &
247 "contain a terminating nul char");
248 end if;
249
250 -- Function Value is used with the total length of the
251 -- Char_Array_Without_nul as a parameter to verify the allocation.
252
253 if ICS.Value(Item => TC_chars_ptr, Length => 6) /=
254 Char_Array_Without_nul or
255 ICS.Strlen(Item => TC_chars_ptr) /= 6
256 then
257 Report.Failed("Incorrect length of allocated char_array " &
258 "resulting from call of New_Char_Array with " &
259 "a non-null char_array parameter that did not " &
260 "contain a terminating nul char");
261 end if;
262
263
264 -- Check that the function New_String returns a chars_ptr specifying
265 -- an allocated object initialized to the value of parameter Str.
266
267 ICS.Free(TC_chars_ptr); -- Reset the chars_ptr to Null_Ptr;
268 if TC_chars_ptr /= ICS.Null_Ptr then
269 Report.Failed("Reset of TC_chars_ptr to Null not successful - 3");
270 end if;
271
272 TC_chars_ptr := ICS.New_String(Str => Test_String);
273
274 if ICS.Value(TC_chars_ptr) /= Test_String or
275 ICS.Value(ICS.New_Char_Array(IC.To_C(Test_String,True))) /=
276 Test_String
277 then
278 Report.Failed("Incorrect allocation resulting from function " &
279 "New_String with a string parameter value");
280 end if;
281
282 ICS.Free(TC_chars_ptr); -- Reset the chars_ptr to Null_Ptr;
283 if TC_chars_ptr /= ICS.Null_Ptr then
284 Report.Failed("Reset of TC_chars_ptr to Null not successful - 4");
285 end if;
286
287 if ICS.Value(ICS.New_String(String_Without_nul)) /=
288 String_Without_nul or
289 ICS.Value(ICS.New_Char_Array(IC.To_C(String_Without_nul,False))) /=
290 String_Without_nul
291 then
292 Report.Failed("Incorrect allocation resulting from function " &
293 "New_String with parameter value String_Without_nul");
294 end if;
295
296
297 exception
298 when The_Error : others =>
299 Report.Failed ("The following exception was raised in the " &
300 "Test_Block: " & Exception_Name(The_Error));
301 end Test_Block;
302
303 Report.Result;
304
305 end CXB3009;