libstdc++

ostream.tcc
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1 // ostream classes -*- C++ -*-
2
3 // Copyright (C) 1997-2013 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
19
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
24
25 /** @file bits/ostream.tcc
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{ostream}
28 */
29
30 //
31 // ISO C++ 14882: 27.6.2 Output streams
32 //
33
34 #ifndef _OSTREAM_TCC
35 #define _OSTREAM_TCC 1
36
37 #pragma GCC system_header
38
39 #include <bits/cxxabi_forced.h>
40
41 namespace std _GLIBCXX_VISIBILITY(default)
42 {
43 _GLIBCXX_BEGIN_NAMESPACE_VERSION
44
45 template<typename _CharT, typename _Traits>
46 basic_ostream<_CharT, _Traits>::sentry::
47 sentry(basic_ostream<_CharT, _Traits>& __os)
48 : _M_ok(false), _M_os(__os)
49 {
50 // XXX MT
51 if (__os.tie() && __os.good())
52 __os.tie()->flush();
53
54 if (__os.good())
55 _M_ok = true;
56 else
57 __os.setstate(ios_base::failbit);
58 }
59
60 template<typename _CharT, typename _Traits>
61 template<typename _ValueT>
62 basic_ostream<_CharT, _Traits>&
63 basic_ostream<_CharT, _Traits>::
64 _M_insert(_ValueT __v)
65 {
66 sentry __cerb(*this);
67 if (__cerb)
68 {
69 ios_base::iostate __err = ios_base::goodbit;
70 __try
71 {
72 const __num_put_type& __np = __check_facet(this->_M_num_put);
73 if (__np.put(*this, *this, this->fill(), __v).failed())
74 __err |= ios_base::badbit;
75 }
76 __catch(__cxxabiv1::__forced_unwind&)
77 {
78 this->_M_setstate(ios_base::badbit);
79 __throw_exception_again;
80 }
81 __catch(...)
82 { this->_M_setstate(ios_base::badbit); }
83 if (__err)
84 this->setstate(__err);
85 }
86 return *this;
87 }
88
89 template<typename _CharT, typename _Traits>
90 basic_ostream<_CharT, _Traits>&
91 basic_ostream<_CharT, _Traits>::
92 operator<<(short __n)
93 {
94 // _GLIBCXX_RESOLVE_LIB_DEFECTS
95 // 117. basic_ostream uses nonexistent num_put member functions.
96 const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
97 if (__fmt == ios_base::oct || __fmt == ios_base::hex)
98 return _M_insert(static_cast<long>(static_cast<unsigned short>(__n)));
99 else
100 return _M_insert(static_cast<long>(__n));
101 }
102
103 template<typename _CharT, typename _Traits>
104 basic_ostream<_CharT, _Traits>&
105 basic_ostream<_CharT, _Traits>::
106 operator<<(int __n)
107 {
108 // _GLIBCXX_RESOLVE_LIB_DEFECTS
109 // 117. basic_ostream uses nonexistent num_put member functions.
110 const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield;
111 if (__fmt == ios_base::oct || __fmt == ios_base::hex)
112 return _M_insert(static_cast<long>(static_cast<unsigned int>(__n)));
113 else
114 return _M_insert(static_cast<long>(__n));
115 }
116
117 template<typename _CharT, typename _Traits>
118 basic_ostream<_CharT, _Traits>&
119 basic_ostream<_CharT, _Traits>::
120 operator<<(__streambuf_type* __sbin)
121 {
122 ios_base::iostate __err = ios_base::goodbit;
123 sentry __cerb(*this);
124 if (__cerb && __sbin)
125 {
126 __try
127 {
128 if (!__copy_streambufs(__sbin, this->rdbuf()))
129 __err |= ios_base::failbit;
130 }
131 __catch(__cxxabiv1::__forced_unwind&)
132 {
133 this->_M_setstate(ios_base::badbit);
134 __throw_exception_again;
135 }
136 __catch(...)
137 { this->_M_setstate(ios_base::failbit); }
138 }
139 else if (!__sbin)
140 __err |= ios_base::badbit;
141 if (__err)
142 this->setstate(__err);
143 return *this;
144 }
145
146 template<typename _CharT, typename _Traits>
147 basic_ostream<_CharT, _Traits>&
148 basic_ostream<_CharT, _Traits>::
149 put(char_type __c)
150 {
151 // _GLIBCXX_RESOLVE_LIB_DEFECTS
152 // DR 60. What is a formatted input function?
153 // basic_ostream::put(char_type) is an unformatted output function.
154 // DR 63. Exception-handling policy for unformatted output.
155 // Unformatted output functions should catch exceptions thrown
156 // from streambuf members.
157 sentry __cerb(*this);
158 if (__cerb)
159 {
160 ios_base::iostate __err = ios_base::goodbit;
161 __try
162 {
163 const int_type __put = this->rdbuf()->sputc(__c);
164 if (traits_type::eq_int_type(__put, traits_type::eof()))
165 __err |= ios_base::badbit;
166 }
167 __catch(__cxxabiv1::__forced_unwind&)
168 {
169 this->_M_setstate(ios_base::badbit);
170 __throw_exception_again;
171 }
172 __catch(...)
173 { this->_M_setstate(ios_base::badbit); }
174 if (__err)
175 this->setstate(__err);
176 }
177 return *this;
178 }
179
180 template<typename _CharT, typename _Traits>
181 basic_ostream<_CharT, _Traits>&
182 basic_ostream<_CharT, _Traits>::
183 write(const _CharT* __s, streamsize __n)
184 {
185 // _GLIBCXX_RESOLVE_LIB_DEFECTS
186 // DR 60. What is a formatted input function?
187 // basic_ostream::write(const char_type*, streamsize) is an
188 // unformatted output function.
189 // DR 63. Exception-handling policy for unformatted output.
190 // Unformatted output functions should catch exceptions thrown
191 // from streambuf members.
192 sentry __cerb(*this);
193 if (__cerb)
194 {
195 __try
196 { _M_write(__s, __n); }
197 __catch(__cxxabiv1::__forced_unwind&)
198 {
199 this->_M_setstate(ios_base::badbit);
200 __throw_exception_again;
201 }
202 __catch(...)
203 { this->_M_setstate(ios_base::badbit); }
204 }
205 return *this;
206 }
207
208 template<typename _CharT, typename _Traits>
209 basic_ostream<_CharT, _Traits>&
210 basic_ostream<_CharT, _Traits>::
211 flush()
212 {
213 // _GLIBCXX_RESOLVE_LIB_DEFECTS
214 // DR 60. What is a formatted input function?
215 // basic_ostream::flush() is *not* an unformatted output function.
216 ios_base::iostate __err = ios_base::goodbit;
217 __try
218 {
219 if (this->rdbuf() && this->rdbuf()->pubsync() == -1)
220 __err |= ios_base::badbit;
221 }
222 __catch(__cxxabiv1::__forced_unwind&)
223 {
224 this->_M_setstate(ios_base::badbit);
225 __throw_exception_again;
226 }
227 __catch(...)
228 { this->_M_setstate(ios_base::badbit); }
229 if (__err)
230 this->setstate(__err);
231 return *this;
232 }
233
234 template<typename _CharT, typename _Traits>
235 typename basic_ostream<_CharT, _Traits>::pos_type
236 basic_ostream<_CharT, _Traits>::
237 tellp()
238 {
239 pos_type __ret = pos_type(-1);
240 __try
241 {
242 if (!this->fail())
243 __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out);
244 }
245 __catch(__cxxabiv1::__forced_unwind&)
246 {
247 this->_M_setstate(ios_base::badbit);
248 __throw_exception_again;
249 }
250 __catch(...)
251 { this->_M_setstate(ios_base::badbit); }
252 return __ret;
253 }
254
255 template<typename _CharT, typename _Traits>
256 basic_ostream<_CharT, _Traits>&
257 basic_ostream<_CharT, _Traits>::
258 seekp(pos_type __pos)
259 {
260 ios_base::iostate __err = ios_base::goodbit;
261 __try
262 {
263 if (!this->fail())
264 {
265 // _GLIBCXX_RESOLVE_LIB_DEFECTS
266 // 136. seekp, seekg setting wrong streams?
267 const pos_type __p = this->rdbuf()->pubseekpos(__pos,
268 ios_base::out);
269
270 // 129. Need error indication from seekp() and seekg()
271 if (__p == pos_type(off_type(-1)))
272 __err |= ios_base::failbit;
273 }
274 }
275 __catch(__cxxabiv1::__forced_unwind&)
276 {
277 this->_M_setstate(ios_base::badbit);
278 __throw_exception_again;
279 }
280 __catch(...)
281 { this->_M_setstate(ios_base::badbit); }
282 if (__err)
283 this->setstate(__err);
284 return *this;
285 }
286
287 template<typename _CharT, typename _Traits>
288 basic_ostream<_CharT, _Traits>&
289 basic_ostream<_CharT, _Traits>::
290 seekp(off_type __off, ios_base::seekdir __dir)
291 {
292 ios_base::iostate __err = ios_base::goodbit;
293 __try
294 {
295 if (!this->fail())
296 {
297 // _GLIBCXX_RESOLVE_LIB_DEFECTS
298 // 136. seekp, seekg setting wrong streams?
299 const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir,
300 ios_base::out);
301
302 // 129. Need error indication from seekp() and seekg()
303 if (__p == pos_type(off_type(-1)))
304 __err |= ios_base::failbit;
305 }
306 }
307 __catch(__cxxabiv1::__forced_unwind&)
308 {
309 this->_M_setstate(ios_base::badbit);
310 __throw_exception_again;
311 }
312 __catch(...)
313 { this->_M_setstate(ios_base::badbit); }
314 if (__err)
315 this->setstate(__err);
316 return *this;
317 }
318
319 template<typename _CharT, typename _Traits>
320 basic_ostream<_CharT, _Traits>&
321 operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s)
322 {
323 if (!__s)
324 __out.setstate(ios_base::badbit);
325 else
326 {
327 // _GLIBCXX_RESOLVE_LIB_DEFECTS
328 // 167. Improper use of traits_type::length()
329 const size_t __clen = char_traits<char>::length(__s);
330 __try
331 {
332 struct __ptr_guard
333 {
334 _CharT *__p;
335 __ptr_guard (_CharT *__ip): __p(__ip) { }
336 ~__ptr_guard() { delete[] __p; }
337 _CharT* __get() { return __p; }
338 } __pg (new _CharT[__clen]);
339
340 _CharT *__ws = __pg.__get();
341 for (size_t __i = 0; __i < __clen; ++__i)
342 __ws[__i] = __out.widen(__s[__i]);
343 __ostream_insert(__out, __ws, __clen);
344 }
345 __catch(__cxxabiv1::__forced_unwind&)
346 {
347 __out._M_setstate(ios_base::badbit);
348 __throw_exception_again;
349 }
350 __catch(...)
351 { __out._M_setstate(ios_base::badbit); }
352 }
353 return __out;
354 }
355
356 // Inhibit implicit instantiations for required instantiations,
357 // which are defined via explicit instantiations elsewhere.
358 #if _GLIBCXX_EXTERN_TEMPLATE
359 extern template class basic_ostream<char>;
360 extern template ostream& endl(ostream&);
361 extern template ostream& ends(ostream&);
362 extern template ostream& flush(ostream&);
363 extern template ostream& operator<<(ostream&, char);
364 extern template ostream& operator<<(ostream&, unsigned char);
365 extern template ostream& operator<<(ostream&, signed char);
366 extern template ostream& operator<<(ostream&, const char*);
367 extern template ostream& operator<<(ostream&, const unsigned char*);
368 extern template ostream& operator<<(ostream&, const signed char*);
369
370 extern template ostream& ostream::_M_insert(long);
371 extern template ostream& ostream::_M_insert(unsigned long);
372 extern template ostream& ostream::_M_insert(bool);
373 #ifdef _GLIBCXX_USE_LONG_LONG
374 extern template ostream& ostream::_M_insert(long long);
375 extern template ostream& ostream::_M_insert(unsigned long long);
376 #endif
377 extern template ostream& ostream::_M_insert(double);
378 extern template ostream& ostream::_M_insert(long double);
379 extern template ostream& ostream::_M_insert(const void*);
380
381 #ifdef _GLIBCXX_USE_WCHAR_T
382 extern template class basic_ostream<wchar_t>;
383 extern template wostream& endl(wostream&);
384 extern template wostream& ends(wostream&);
385 extern template wostream& flush(wostream&);
386 extern template wostream& operator<<(wostream&, wchar_t);
387 extern template wostream& operator<<(wostream&, char);
388 extern template wostream& operator<<(wostream&, const wchar_t*);
389 extern template wostream& operator<<(wostream&, const char*);
390
391 extern template wostream& wostream::_M_insert(long);
392 extern template wostream& wostream::_M_insert(unsigned long);
393 extern template wostream& wostream::_M_insert(bool);
394 #ifdef _GLIBCXX_USE_LONG_LONG
395 extern template wostream& wostream::_M_insert(long long);
396 extern template wostream& wostream::_M_insert(unsigned long long);
397 #endif
398 extern template wostream& wostream::_M_insert(double);
399 extern template wostream& wostream::_M_insert(long double);
400 extern template wostream& wostream::_M_insert(const void*);
401 #endif
402 #endif
403
404 _GLIBCXX_END_NAMESPACE_VERSION
405 } // namespace std
406
407 #endif