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1 | // -*- C++ -*- |
2 | // Testing filebuf for the C++ library testsuite. | |
3 | // | |
4 | // Copyright (C) 2003 Free Software Foundation, Inc. | |
5 | // | |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 2, or (at your option) | |
10 | // any later version. | |
11 | // | |
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | // | |
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING. If not, write to the Free | |
19 | // Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
20 | // USA. | |
21 | // | |
22 | // As a special exception, you may use this file as part of a free software | |
23 | // library without restriction. Specifically, if other files instantiate | |
24 | // templates or use macros or inline functions from this file, or you compile | |
25 | // this file and link it with other files to produce an executable, this | |
26 | // file does not by itself cause the resulting executable to be covered by | |
27 | // the GNU General Public License. This exception does not however | |
28 | // invalidate any other reasons why the executable file might be covered by | |
29 | // the GNU General Public License. | |
30 | ||
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31 | #ifndef _GLIBCXX_TESTSUITE_IO_H |
32 | #define _GLIBCXX_TESTSUITE_IO_H | |
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33 | |
34 | #include <fstream> | |
35 | ||
aecf642c | 36 | namespace __gnu_test |
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37 | { |
38 | // Used to verify the constraints/requirements on get and put areas | |
39 | // as defined in | |
40 | // 27.5.1 - Stream buffer requirements: get and put areas | |
41 | // 27.8.1.1 - Template class basic_filebuf p 3 | |
42 | // If the file is not open (ios_base::in) -> input seq. cannot be read | |
43 | // If the file is not open (ios_base::out) -> output seq. cannot be written | |
44 | // Joint file position | |
45 | // 27.8.1.4 - Overridden virtual functions p9 | |
46 | // If unbuffered, pbase == pptr == NULL | |
47 | class constraint_filebuf: public std::filebuf | |
48 | { | |
49 | public: | |
50 | bool | |
51 | write_position() | |
52 | { | |
53 | bool two = this->pptr() != NULL; | |
54 | bool one = this->pptr() < this->epptr(); | |
55 | return one && two; | |
56 | } | |
57 | ||
58 | bool | |
59 | read_position() | |
60 | { | |
61 | bool one = this->gptr() != NULL; | |
62 | bool two = this->gptr() < this->egptr(); | |
63 | ||
64 | return one && two; | |
65 | } | |
66 | ||
67 | bool | |
68 | unbuffered() | |
69 | { | |
70 | bool one = this->pbase() == NULL; | |
71 | bool two = this->pptr() == NULL; | |
72 | return one && two; | |
12841eb3 | 73 | } |
46c4e5d6 | 74 | }; |
5681c890 PR |
75 | |
76 | // Used to check if basic_streambuf::pubsync() has been called. | |
77 | // This is useful for checking if a function creates [io]stream::sentry | |
78 | // objects, since the sentry constructors call tie()->flush(). | |
79 | class sync_streambuf : public std::streambuf | |
80 | { | |
81 | private: | |
82 | bool m_sync_called; | |
83 | ||
84 | public: | |
85 | sync_streambuf() | |
86 | : m_sync_called(false) | |
87 | { } | |
88 | ||
89 | bool sync_called() const | |
90 | { return m_sync_called; } | |
91 | ||
92 | protected: | |
93 | int sync() | |
94 | { | |
95 | m_sync_called = true; | |
96 | return 0; | |
97 | } | |
98 | }; | |
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99 | |
100 | // Throws on all overflow and underflow calls. | |
101 | struct underflow_error: std::exception { }; | |
102 | struct overflow_error: std::exception { }; | |
103 | struct positioning_error: std::exception { }; | |
104 | ||
105 | struct fail_streambuf : std::streambuf | |
106 | { | |
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107 | private: |
108 | char p[2]; | |
109 | ||
110 | public: | |
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111 | fail_streambuf() |
112 | { | |
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113 | p[0] = 's'; |
114 | p[1] = char(); | |
115 | setg(p, p, p + 1); | |
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116 | } |
117 | ||
118 | virtual int_type underflow() | |
119 | { | |
120 | throw underflow_error(); | |
121 | return -1; | |
122 | } | |
123 | ||
124 | virtual int_type uflow() | |
125 | { | |
126 | throw underflow_error(); | |
127 | return -1; | |
128 | } | |
129 | ||
130 | virtual int_type | |
131 | overflow(int_type) | |
132 | { | |
133 | throw overflow_error(); | |
134 | return -1; | |
135 | } | |
136 | ||
137 | virtual pos_type | |
138 | seekoff(off_type, std::ios_base::seekdir, std::ios_base::openmode) | |
139 | { | |
140 | throw positioning_error(); | |
141 | return pos_type(off_type(-1)); | |
142 | } | |
143 | ||
144 | virtual pos_type | |
145 | seekpos(pos_type, std::ios_base::openmode) | |
146 | { | |
147 | throw positioning_error(); | |
148 | return pos_type(off_type(-1)); | |
149 | } | |
150 | ||
151 | virtual int | |
152 | sync() | |
153 | { | |
154 | throw positioning_error(); | |
155 | return 0; | |
156 | } | |
157 | }; | |
158 | ||
159 | // Facets that throw an exception for every virtual function. | |
160 | struct facet_error: std::exception { }; | |
161 | ||
162 | class fail_num_get : public std::num_get<char> | |
163 | { | |
164 | typedef std::ios_base ios_base; | |
165 | ||
166 | protected: | |
167 | iter_type | |
168 | do_get(iter_type a, iter_type, ios_base&, ios_base::iostate&, bool&) const | |
169 | { throw facet_error(); return iter_type(); } | |
170 | ||
171 | virtual iter_type | |
172 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate&, long&) const | |
173 | { throw facet_error(); return iter_type(); } | |
174 | ||
175 | virtual iter_type | |
176 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
177 | unsigned short&) const | |
178 | { throw facet_error(); return iter_type(); } | |
179 | ||
180 | virtual iter_type | |
181 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
182 | unsigned int&) const | |
183 | { throw facet_error(); return iter_type(); } | |
184 | ||
185 | virtual iter_type | |
186 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
187 | unsigned long&) const | |
188 | { throw facet_error(); return iter_type(); } | |
189 | ||
190 | #ifdef _GLIBCXX_USE_LONG_LONG | |
191 | virtual iter_type | |
192 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
193 | long long&) const | |
194 | { throw facet_error(); return iter_type(); } | |
195 | ||
196 | virtual iter_type | |
197 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
198 | unsigned long long&) const | |
199 | { throw facet_error(); return iter_type(); } | |
200 | #endif | |
201 | ||
202 | virtual iter_type | |
203 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
204 | float&) const | |
205 | { throw facet_error(); return iter_type(); } | |
206 | ||
207 | virtual iter_type | |
208 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
209 | double&) const | |
210 | { throw facet_error(); return iter_type(); } | |
211 | ||
212 | virtual iter_type | |
213 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
214 | long double&) const | |
215 | { throw facet_error(); return iter_type(); } | |
216 | ||
217 | virtual iter_type | |
218 | do_get(iter_type, iter_type, ios_base&, ios_base::iostate& __err, | |
219 | void*&) const | |
220 | { throw facet_error(); return iter_type(); } | |
221 | }; | |
222 | ||
223 | class fail_num_put : public std::num_put<char> | |
224 | { | |
225 | typedef std::ios_base ios_base; | |
226 | ||
227 | protected: | |
228 | iter_type | |
229 | do_put(iter_type, ios_base&, char_type __fill, bool __v) const | |
230 | { throw facet_error(); return iter_type(NULL); } | |
231 | ||
232 | virtual iter_type | |
233 | do_put(iter_type, ios_base&, char_type __fill, long __v) const | |
234 | { throw facet_error(); return iter_type(NULL); } | |
235 | ||
236 | virtual iter_type | |
237 | do_put(iter_type, ios_base&, char_type __fill, unsigned long) const | |
238 | { throw facet_error(); return iter_type(NULL); } | |
239 | ||
240 | #ifdef _GLIBCXX_USE_LONG_LONG | |
241 | virtual iter_type | |
242 | do_put(iter_type, ios_base&, char_type __fill, long long __v) const | |
243 | { throw facet_error(); return iter_type(NULL); } | |
244 | ||
245 | virtual iter_type | |
246 | do_put(iter_type, ios_base&, char_type __fill, unsigned long long) const | |
247 | { throw facet_error(); return iter_type(NULL); } | |
248 | #endif | |
249 | ||
250 | virtual iter_type | |
251 | do_put(iter_type, ios_base&, char_type __fill, double __v) const | |
252 | { throw facet_error(); return iter_type(NULL); } | |
253 | ||
254 | virtual iter_type | |
255 | do_put(iter_type, ios_base&, char_type __fill, long double __v) const | |
256 | { throw facet_error(); return iter_type(NULL); } | |
257 | ||
258 | virtual iter_type | |
259 | do_put(iter_type, ios_base&, char_type __fill, const void* __v) const | |
260 | { throw facet_error(); return iter_type(NULL); } | |
261 | }; | |
aecf642c | 262 | }; // namespace __gnu_test |
46c4e5d6 | 263 | |
3d7c150e | 264 | #endif // _GLIBCXX_TESTSUITE_IO_H |
46c4e5d6 | 265 |