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a32e3c09 BK |
1 | // istream classes -*- C++ -*- |
2 | ||
226a2e08 | 3 | // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
7c3e9502 | 4 | // 2006, 2007, 2008, 2009, 2010, 2011 |
a32e3c09 | 5 | // Free Software Foundation, Inc. |
725dc051 BK |
6 | // |
7 | // This file is part of the GNU ISO C++ Library. This library is free | |
8 | // software; you can redistribute it and/or modify it under the | |
9 | // terms of the GNU General Public License as published by the | |
748086b7 | 10 | // Free Software Foundation; either version 3, or (at your option) |
725dc051 BK |
11 | // any later version. |
12 | ||
13 | // This library is distributed in the hope that it will be useful, | |
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | // GNU General Public License for more details. | |
17 | ||
748086b7 JJ |
18 | // Under Section 7 of GPL version 3, you are granted additional |
19 | // permissions described in the GCC Runtime Library Exception, version | |
20 | // 3.1, as published by the Free Software Foundation. | |
21 | ||
22 | // You should have received a copy of the GNU General Public License and | |
23 | // a copy of the GCC Runtime Library Exception along with this program; | |
24 | // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see | |
25 | // <http://www.gnu.org/licenses/>. | |
725dc051 | 26 | |
f910786b | 27 | /** @file bits/istream.tcc |
0aa06b18 | 28 | * This is an internal header file, included by other library headers. |
f910786b | 29 | * Do not attempt to use it directly. @headername{istream} |
0aa06b18 BK |
30 | */ |
31 | ||
725dc051 | 32 | // |
479864fe | 33 | // ISO C++ 14882: 27.6.1 Input streams |
725dc051 BK |
34 | // |
35 | ||
3d7c150e BK |
36 | #ifndef _ISTREAM_TCC |
37 | #define _ISTREAM_TCC 1 | |
38 | ||
3b794528 BK |
39 | #pragma GCC system_header |
40 | ||
7c3e9502 | 41 | #include <bits/cxxabi_forced.h> |
d05f74f1 | 42 | |
12ffa228 BK |
43 | namespace std _GLIBCXX_VISIBILITY(default) |
44 | { | |
45 | _GLIBCXX_BEGIN_NAMESPACE_VERSION | |
3cbc7af0 | 46 | |
725dc051 BK |
47 | template<typename _CharT, typename _Traits> |
48 | basic_istream<_CharT, _Traits>::sentry:: | |
26c691a8 | 49 | sentry(basic_istream<_CharT, _Traits>& __in, bool __noskip) : _M_ok(false) |
725dc051 | 50 | { |
6f0398bb | 51 | ios_base::iostate __err = ios_base::goodbit; |
ed6814f7 | 52 | if (__in.good()) |
725dc051 BK |
53 | { |
54 | if (__in.tie()) | |
55 | __in.tie()->flush(); | |
7f786096 | 56 | if (!__noskip && bool(__in.flags() & ios_base::skipws)) |
ed6814f7 | 57 | { |
725dc051 | 58 | const __int_type __eof = traits_type::eof(); |
39003c99 BK |
59 | __streambuf_type* __sb = __in.rdbuf(); |
60 | __int_type __c = __sb->sgetc(); | |
40e5b283 | 61 | |
2803847d | 62 | const __ctype_type& __ct = __check_facet(__in._M_ctype); |
0cd1de6f | 63 | while (!traits_type::eq_int_type(__c, __eof) |
26c691a8 | 64 | && __ct.is(ctype_base::space, |
2803847d | 65 | traits_type::to_char_type(__c))) |
12841eb3 | 66 | __c = __sb->snextc(); |
39003c99 | 67 | |
f5677b15 | 68 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
e0f05105 | 69 | // 195. Should basic_istream::sentry's constructor ever |
4c411e4f | 70 | // set eofbit? |
f13a69ec | 71 | if (traits_type::eq_int_type(__c, __eof)) |
48f499cf | 72 | __err |= ios_base::eofbit; |
725dc051 BK |
73 | } |
74 | } | |
13187a45 | 75 | |
48f499cf | 76 | if (__in.good() && __err == ios_base::goodbit) |
13187a45 BK |
77 | _M_ok = true; |
78 | else | |
79 | { | |
48f499cf | 80 | __err |= ios_base::failbit; |
6b98580b | 81 | __in.setstate(__err); |
13187a45 | 82 | } |
725dc051 BK |
83 | } |
84 | ||
725dc051 | 85 | template<typename _CharT, typename _Traits> |
49d5c016 PC |
86 | template<typename _ValueT> |
87 | basic_istream<_CharT, _Traits>& | |
88 | basic_istream<_CharT, _Traits>:: | |
89 | _M_extract(_ValueT& __v) | |
90 | { | |
91 | sentry __cerb(*this, false); | |
880b527f | 92 | if (__cerb) |
49d5c016 | 93 | { |
6f0398bb | 94 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 95 | __try |
49d5c016 PC |
96 | { |
97 | const __num_get_type& __ng = __check_facet(this->_M_num_get); | |
98 | __ng.get(*this, 0, *this, __err, __v); | |
99 | } | |
bc2631e0 | 100 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 | 101 | { |
6f0398bb | 102 | this->_M_setstate(ios_base::badbit); |
d05f74f1 JM |
103 | __throw_exception_again; |
104 | } | |
bc2631e0 | 105 | __catch(...) |
49d5c016 PC |
106 | { this->_M_setstate(ios_base::badbit); } |
107 | if (__err) | |
108 | this->setstate(__err); | |
109 | } | |
110 | return *this; | |
111 | } | |
725dc051 | 112 | |
e7968bd8 PC |
113 | template<typename _CharT, typename _Traits> |
114 | basic_istream<_CharT, _Traits>& | |
115 | basic_istream<_CharT, _Traits>:: | |
116 | operator>>(short& __n) | |
117 | { | |
118 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
119 | // 118. basic_istream uses nonexistent num_get member functions. | |
6f0398bb | 120 | sentry __cerb(*this, false); |
880b527f | 121 | if (__cerb) |
e7968bd8 | 122 | { |
6f0398bb PC |
123 | ios_base::iostate __err = ios_base::goodbit; |
124 | __try | |
125 | { | |
126 | long __l; | |
127 | const __num_get_type& __ng = __check_facet(this->_M_num_get); | |
128 | __ng.get(*this, 0, *this, __err, __l); | |
129 | ||
130 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
131 | // 696. istream::operator>>(int&) broken. | |
132 | if (__l < __gnu_cxx::__numeric_traits<short>::__min) | |
133 | { | |
134 | __err |= ios_base::failbit; | |
135 | __n = __gnu_cxx::__numeric_traits<short>::__min; | |
136 | } | |
137 | else if (__l > __gnu_cxx::__numeric_traits<short>::__max) | |
138 | { | |
139 | __err |= ios_base::failbit; | |
140 | __n = __gnu_cxx::__numeric_traits<short>::__max; | |
141 | } | |
142 | else | |
143 | __n = short(__l); | |
144 | } | |
145 | __catch(__cxxabiv1::__forced_unwind&) | |
146 | { | |
147 | this->_M_setstate(ios_base::badbit); | |
148 | __throw_exception_again; | |
149 | } | |
150 | __catch(...) | |
151 | { this->_M_setstate(ios_base::badbit); } | |
152 | if (__err) | |
153 | this->setstate(__err); | |
e7968bd8 PC |
154 | } |
155 | return *this; | |
156 | } | |
6f0398bb | 157 | |
e7968bd8 PC |
158 | template<typename _CharT, typename _Traits> |
159 | basic_istream<_CharT, _Traits>& | |
160 | basic_istream<_CharT, _Traits>:: | |
161 | operator>>(int& __n) | |
162 | { | |
163 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
164 | // 118. basic_istream uses nonexistent num_get member functions. | |
6f0398bb | 165 | sentry __cerb(*this, false); |
880b527f | 166 | if (__cerb) |
e7968bd8 | 167 | { |
6f0398bb PC |
168 | ios_base::iostate __err = ios_base::goodbit; |
169 | __try | |
170 | { | |
171 | long __l; | |
172 | const __num_get_type& __ng = __check_facet(this->_M_num_get); | |
173 | __ng.get(*this, 0, *this, __err, __l); | |
174 | ||
175 | // _GLIBCXX_RESOLVE_LIB_DEFECTS | |
176 | // 696. istream::operator>>(int&) broken. | |
177 | if (__l < __gnu_cxx::__numeric_traits<int>::__min) | |
178 | { | |
179 | __err |= ios_base::failbit; | |
180 | __n = __gnu_cxx::__numeric_traits<int>::__min; | |
181 | } | |
182 | else if (__l > __gnu_cxx::__numeric_traits<int>::__max) | |
183 | { | |
184 | __err |= ios_base::failbit; | |
185 | __n = __gnu_cxx::__numeric_traits<int>::__max; | |
186 | } | |
187 | else | |
188 | __n = int(__l); | |
189 | } | |
190 | __catch(__cxxabiv1::__forced_unwind&) | |
191 | { | |
192 | this->_M_setstate(ios_base::badbit); | |
193 | __throw_exception_again; | |
194 | } | |
195 | __catch(...) | |
196 | { this->_M_setstate(ios_base::badbit); } | |
197 | if (__err) | |
198 | this->setstate(__err); | |
e7968bd8 PC |
199 | } |
200 | return *this; | |
201 | } | |
202 | ||
725dc051 | 203 | template<typename _CharT, typename _Traits> |
ed6814f7 | 204 | basic_istream<_CharT, _Traits>& |
725dc051 BK |
205 | basic_istream<_CharT, _Traits>:: |
206 | operator>>(__streambuf_type* __sbout) | |
207 | { | |
6f0398bb | 208 | ios_base::iostate __err = ios_base::goodbit; |
12841eb3 | 209 | sentry __cerb(*this, false); |
880b527f | 210 | if (__cerb && __sbout) |
12841eb3 | 211 | { |
bc2631e0 | 212 | __try |
12841eb3 | 213 | { |
6f4d3d86 PC |
214 | bool __ineof; |
215 | if (!__copy_streambufs_eof(this->rdbuf(), __sbout, __ineof)) | |
12841eb3 | 216 | __err |= ios_base::failbit; |
6f4d3d86 PC |
217 | if (__ineof) |
218 | __err |= ios_base::eofbit; | |
12841eb3 | 219 | } |
bc2631e0 | 220 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
221 | { |
222 | this->_M_setstate(ios_base::failbit); | |
223 | __throw_exception_again; | |
224 | } | |
bc2631e0 | 225 | __catch(...) |
12841eb3 BK |
226 | { this->_M_setstate(ios_base::failbit); } |
227 | } | |
228 | else if (!__sbout) | |
229 | __err |= ios_base::failbit; | |
6b98580b BK |
230 | if (__err) |
231 | this->setstate(__err); | |
12841eb3 | 232 | return *this; |
725dc051 BK |
233 | } |
234 | ||
235 | template<typename _CharT, typename _Traits> | |
31bfa177 | 236 | typename basic_istream<_CharT, _Traits>::int_type |
725dc051 BK |
237 | basic_istream<_CharT, _Traits>:: |
238 | get(void) | |
239 | { | |
240 | const int_type __eof = traits_type::eof(); | |
241 | int_type __c = __eof; | |
242 | _M_gcount = 0; | |
6f0398bb | 243 | ios_base::iostate __err = ios_base::goodbit; |
725dc051 | 244 | sentry __cerb(*this, true); |
880b527f | 245 | if (__cerb) |
725dc051 | 246 | { |
bc2631e0 | 247 | __try |
bfa1e6b1 BK |
248 | { |
249 | __c = this->rdbuf()->sbumpc(); | |
250 | // 27.6.1.1 paragraph 3 | |
f13a69ec | 251 | if (!traits_type::eq_int_type(__c, __eof)) |
bfa1e6b1 BK |
252 | _M_gcount = 1; |
253 | else | |
12841eb3 | 254 | __err |= ios_base::eofbit; |
bfa1e6b1 | 255 | } |
bc2631e0 | 256 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
257 | { |
258 | this->_M_setstate(ios_base::badbit); | |
259 | __throw_exception_again; | |
260 | } | |
bc2631e0 | 261 | __catch(...) |
12841eb3 | 262 | { this->_M_setstate(ios_base::badbit); } |
725dc051 | 263 | } |
12841eb3 BK |
264 | if (!_M_gcount) |
265 | __err |= ios_base::failbit; | |
6b98580b BK |
266 | if (__err) |
267 | this->setstate(__err); | |
725dc051 BK |
268 | return __c; |
269 | } | |
270 | ||
271 | template<typename _CharT, typename _Traits> | |
272 | basic_istream<_CharT, _Traits>& | |
273 | basic_istream<_CharT, _Traits>:: | |
274 | get(char_type& __c) | |
275 | { | |
276 | _M_gcount = 0; | |
6f0398bb | 277 | ios_base::iostate __err = ios_base::goodbit; |
725dc051 | 278 | sentry __cerb(*this, true); |
880b527f | 279 | if (__cerb) |
725dc051 | 280 | { |
bc2631e0 | 281 | __try |
bfa1e6b1 | 282 | { |
3adf6cad | 283 | const int_type __cb = this->rdbuf()->sbumpc(); |
bfa1e6b1 | 284 | // 27.6.1.1 paragraph 3 |
12841eb3 | 285 | if (!traits_type::eq_int_type(__cb, traits_type::eof())) |
bfa1e6b1 BK |
286 | { |
287 | _M_gcount = 1; | |
12841eb3 | 288 | __c = traits_type::to_char_type(__cb); |
bfa1e6b1 BK |
289 | } |
290 | else | |
12841eb3 | 291 | __err |= ios_base::eofbit; |
bfa1e6b1 | 292 | } |
bc2631e0 | 293 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
294 | { |
295 | this->_M_setstate(ios_base::badbit); | |
296 | __throw_exception_again; | |
297 | } | |
bc2631e0 | 298 | __catch(...) |
12841eb3 | 299 | { this->_M_setstate(ios_base::badbit); } |
725dc051 | 300 | } |
12841eb3 BK |
301 | if (!_M_gcount) |
302 | __err |= ios_base::failbit; | |
6b98580b BK |
303 | if (__err) |
304 | this->setstate(__err); | |
725dc051 BK |
305 | return *this; |
306 | } | |
307 | ||
308 | template<typename _CharT, typename _Traits> | |
309 | basic_istream<_CharT, _Traits>& | |
310 | basic_istream<_CharT, _Traits>:: | |
311 | get(char_type* __s, streamsize __n, char_type __delim) | |
312 | { | |
313 | _M_gcount = 0; | |
6f0398bb | 314 | ios_base::iostate __err = ios_base::goodbit; |
725dc051 | 315 | sentry __cerb(*this, true); |
880b527f | 316 | if (__cerb) |
725dc051 | 317 | { |
bc2631e0 | 318 | __try |
bfa1e6b1 BK |
319 | { |
320 | const int_type __idelim = traits_type::to_int_type(__delim); | |
321 | const int_type __eof = traits_type::eof(); | |
322 | __streambuf_type* __sb = this->rdbuf(); | |
ed6814f7 BI |
323 | int_type __c = __sb->sgetc(); |
324 | ||
325 | while (_M_gcount + 1 < __n | |
f13a69ec BK |
326 | && !traits_type::eq_int_type(__c, __eof) |
327 | && !traits_type::eq_int_type(__c, __idelim)) | |
bfa1e6b1 BK |
328 | { |
329 | *__s++ = traits_type::to_char_type(__c); | |
330 | ++_M_gcount; | |
b1c5b5a0 | 331 | __c = __sb->snextc(); |
bfa1e6b1 | 332 | } |
f13a69ec | 333 | if (traits_type::eq_int_type(__c, __eof)) |
12841eb3 | 334 | __err |= ios_base::eofbit; |
bfa1e6b1 | 335 | } |
bc2631e0 | 336 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
337 | { |
338 | this->_M_setstate(ios_base::badbit); | |
339 | __throw_exception_again; | |
340 | } | |
bc2631e0 | 341 | __catch(...) |
12841eb3 | 342 | { this->_M_setstate(ios_base::badbit); } |
725dc051 | 343 | } |
75a25e3f PC |
344 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
345 | // 243. get and getline when sentry reports failure. | |
346 | if (__n > 0) | |
347 | *__s = char_type(); | |
725dc051 | 348 | if (!_M_gcount) |
12841eb3 | 349 | __err |= ios_base::failbit; |
6b98580b BK |
350 | if (__err) |
351 | this->setstate(__err); | |
725dc051 BK |
352 | return *this; |
353 | } | |
354 | ||
355 | template<typename _CharT, typename _Traits> | |
356 | basic_istream<_CharT, _Traits>& | |
357 | basic_istream<_CharT, _Traits>:: | |
358 | get(__streambuf_type& __sb, char_type __delim) | |
359 | { | |
360 | _M_gcount = 0; | |
6f0398bb | 361 | ios_base::iostate __err = ios_base::goodbit; |
725dc051 | 362 | sentry __cerb(*this, true); |
880b527f | 363 | if (__cerb) |
725dc051 | 364 | { |
bc2631e0 | 365 | __try |
bfa1e6b1 BK |
366 | { |
367 | const int_type __idelim = traits_type::to_int_type(__delim); | |
ed6814f7 | 368 | const int_type __eof = traits_type::eof(); |
42ca0438 BK |
369 | __streambuf_type* __this_sb = this->rdbuf(); |
370 | int_type __c = __this_sb->sgetc(); | |
f13a69ec | 371 | char_type __c2 = traits_type::to_char_type(__c); |
ed6814f7 BI |
372 | |
373 | while (!traits_type::eq_int_type(__c, __eof) | |
374 | && !traits_type::eq_int_type(__c, __idelim) | |
f13a69ec | 375 | && !traits_type::eq_int_type(__sb.sputc(__c2), __eof)) |
bfa1e6b1 BK |
376 | { |
377 | ++_M_gcount; | |
42ca0438 | 378 | __c = __this_sb->snextc(); |
f13a69ec | 379 | __c2 = traits_type::to_char_type(__c); |
bfa1e6b1 | 380 | } |
f13a69ec | 381 | if (traits_type::eq_int_type(__c, __eof)) |
12841eb3 | 382 | __err |= ios_base::eofbit; |
bfa1e6b1 | 383 | } |
bc2631e0 | 384 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
385 | { |
386 | this->_M_setstate(ios_base::badbit); | |
387 | __throw_exception_again; | |
388 | } | |
bc2631e0 | 389 | __catch(...) |
12841eb3 | 390 | { this->_M_setstate(ios_base::badbit); } |
725dc051 BK |
391 | } |
392 | if (!_M_gcount) | |
12841eb3 | 393 | __err |= ios_base::failbit; |
6b98580b BK |
394 | if (__err) |
395 | this->setstate(__err); | |
725dc051 BK |
396 | return *this; |
397 | } | |
398 | ||
399 | template<typename _CharT, typename _Traits> | |
400 | basic_istream<_CharT, _Traits>& | |
401 | basic_istream<_CharT, _Traits>:: | |
402 | getline(char_type* __s, streamsize __n, char_type __delim) | |
403 | { | |
404 | _M_gcount = 0; | |
6f0398bb | 405 | ios_base::iostate __err = ios_base::goodbit; |
725dc051 | 406 | sentry __cerb(*this, true); |
880b527f | 407 | if (__cerb) |
adb31ad6 | 408 | { |
bc2631e0 | 409 | __try |
adb31ad6 PC |
410 | { |
411 | const int_type __idelim = traits_type::to_int_type(__delim); | |
412 | const int_type __eof = traits_type::eof(); | |
413 | __streambuf_type* __sb = this->rdbuf(); | |
414 | int_type __c = __sb->sgetc(); | |
415 | ||
416 | while (_M_gcount + 1 < __n | |
417 | && !traits_type::eq_int_type(__c, __eof) | |
418 | && !traits_type::eq_int_type(__c, __idelim)) | |
419 | { | |
420 | *__s++ = traits_type::to_char_type(__c); | |
421 | __c = __sb->snextc(); | |
422 | ++_M_gcount; | |
423 | } | |
424 | if (traits_type::eq_int_type(__c, __eof)) | |
425 | __err |= ios_base::eofbit; | |
426 | else | |
427 | { | |
428 | if (traits_type::eq_int_type(__c, __idelim)) | |
429 | { | |
430 | __sb->sbumpc(); | |
431 | ++_M_gcount; | |
432 | } | |
433 | else | |
434 | __err |= ios_base::failbit; | |
435 | } | |
436 | } | |
bc2631e0 | 437 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
438 | { |
439 | this->_M_setstate(ios_base::badbit); | |
440 | __throw_exception_again; | |
441 | } | |
bc2631e0 | 442 | __catch(...) |
adb31ad6 PC |
443 | { this->_M_setstate(ios_base::badbit); } |
444 | } | |
75a25e3f PC |
445 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
446 | // 243. get and getline when sentry reports failure. | |
447 | if (__n > 0) | |
448 | *__s = char_type(); | |
725dc051 | 449 | if (!_M_gcount) |
adb31ad6 | 450 | __err |= ios_base::failbit; |
6b98580b | 451 | if (__err) |
adb31ad6 | 452 | this->setstate(__err); |
725dc051 BK |
453 | return *this; |
454 | } | |
ed6814f7 | 455 | |
80dddedc PC |
456 | // We provide three overloads, since the first two are much simpler |
457 | // than the general case. Also, the latter two can thus adopt the | |
458 | // same "batchy" strategy used by getline above. | |
459 | template<typename _CharT, typename _Traits> | |
460 | basic_istream<_CharT, _Traits>& | |
461 | basic_istream<_CharT, _Traits>:: | |
462 | ignore(void) | |
463 | { | |
464 | _M_gcount = 0; | |
465 | sentry __cerb(*this, true); | |
880b527f | 466 | if (__cerb) |
80dddedc | 467 | { |
6f0398bb | 468 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 469 | __try |
80dddedc PC |
470 | { |
471 | const int_type __eof = traits_type::eof(); | |
472 | __streambuf_type* __sb = this->rdbuf(); | |
473 | ||
474 | if (traits_type::eq_int_type(__sb->sbumpc(), __eof)) | |
475 | __err |= ios_base::eofbit; | |
476 | else | |
477 | _M_gcount = 1; | |
478 | } | |
bc2631e0 | 479 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
480 | { |
481 | this->_M_setstate(ios_base::badbit); | |
482 | __throw_exception_again; | |
483 | } | |
bc2631e0 | 484 | __catch(...) |
80dddedc PC |
485 | { this->_M_setstate(ios_base::badbit); } |
486 | if (__err) | |
487 | this->setstate(__err); | |
488 | } | |
489 | return *this; | |
490 | } | |
491 | ||
492 | template<typename _CharT, typename _Traits> | |
493 | basic_istream<_CharT, _Traits>& | |
494 | basic_istream<_CharT, _Traits>:: | |
495 | ignore(streamsize __n) | |
496 | { | |
80dddedc PC |
497 | _M_gcount = 0; |
498 | sentry __cerb(*this, true); | |
880b527f | 499 | if (__cerb && __n > 0) |
adb31ad6 | 500 | { |
6f0398bb | 501 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 502 | __try |
adb31ad6 PC |
503 | { |
504 | const int_type __eof = traits_type::eof(); | |
505 | __streambuf_type* __sb = this->rdbuf(); | |
bea53dbf PC |
506 | int_type __c = __sb->sgetc(); |
507 | ||
1e156882 PC |
508 | // N.B. On LFS-enabled platforms streamsize is still 32 bits |
509 | // wide: if we want to implement the standard mandated behavior | |
510 | // for n == max() (see 27.6.1.3/24) we are at risk of signed | |
511 | // integer overflow: thus these contortions. Also note that, | |
512 | // by definition, when more than 2G chars are actually ignored, | |
513 | // _M_gcount (the return value of gcount, that is) cannot be | |
514 | // really correct, being unavoidably too small. | |
78593d78 | 515 | bool __large_ignore = false; |
bea53dbf PC |
516 | while (true) |
517 | { | |
518 | while (_M_gcount < __n | |
519 | && !traits_type::eq_int_type(__c, __eof)) | |
520 | { | |
521 | ++_M_gcount; | |
522 | __c = __sb->snextc(); | |
523 | } | |
6725add5 | 524 | if (__n == __gnu_cxx::__numeric_traits<streamsize>::__max |
bea53dbf | 525 | && !traits_type::eq_int_type(__c, __eof)) |
78593d78 | 526 | { |
6725add5 PC |
527 | _M_gcount = |
528 | __gnu_cxx::__numeric_traits<streamsize>::__min; | |
78593d78 PC |
529 | __large_ignore = true; |
530 | } | |
bea53dbf PC |
531 | else |
532 | break; | |
533 | } | |
adb31ad6 | 534 | |
78593d78 | 535 | if (__large_ignore) |
6725add5 | 536 | _M_gcount = __gnu_cxx::__numeric_traits<streamsize>::__max; |
78593d78 | 537 | |
a141a5af | 538 | if (traits_type::eq_int_type(__c, __eof)) |
adb31ad6 PC |
539 | __err |= ios_base::eofbit; |
540 | } | |
bc2631e0 | 541 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
542 | { |
543 | this->_M_setstate(ios_base::badbit); | |
544 | __throw_exception_again; | |
545 | } | |
bc2631e0 | 546 | __catch(...) |
adb31ad6 PC |
547 | { this->_M_setstate(ios_base::badbit); } |
548 | if (__err) | |
549 | this->setstate(__err); | |
550 | } | |
80dddedc PC |
551 | return *this; |
552 | } | |
553 | ||
725dc051 BK |
554 | template<typename _CharT, typename _Traits> |
555 | basic_istream<_CharT, _Traits>& | |
556 | basic_istream<_CharT, _Traits>:: | |
557 | ignore(streamsize __n, int_type __delim) | |
558 | { | |
559 | _M_gcount = 0; | |
560 | sentry __cerb(*this, true); | |
880b527f | 561 | if (__cerb && __n > 0) |
adb31ad6 | 562 | { |
6f0398bb | 563 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 564 | __try |
adb31ad6 PC |
565 | { |
566 | const int_type __eof = traits_type::eof(); | |
567 | __streambuf_type* __sb = this->rdbuf(); | |
bea53dbf PC |
568 | int_type __c = __sb->sgetc(); |
569 | ||
1e156882 | 570 | // See comment above. |
78593d78 | 571 | bool __large_ignore = false; |
bea53dbf PC |
572 | while (true) |
573 | { | |
574 | while (_M_gcount < __n | |
575 | && !traits_type::eq_int_type(__c, __eof) | |
576 | && !traits_type::eq_int_type(__c, __delim)) | |
577 | { | |
578 | ++_M_gcount; | |
579 | __c = __sb->snextc(); | |
580 | } | |
6725add5 | 581 | if (__n == __gnu_cxx::__numeric_traits<streamsize>::__max |
bea53dbf PC |
582 | && !traits_type::eq_int_type(__c, __eof) |
583 | && !traits_type::eq_int_type(__c, __delim)) | |
78593d78 | 584 | { |
6725add5 PC |
585 | _M_gcount = |
586 | __gnu_cxx::__numeric_traits<streamsize>::__min; | |
78593d78 PC |
587 | __large_ignore = true; |
588 | } | |
bea53dbf PC |
589 | else |
590 | break; | |
591 | } | |
adb31ad6 | 592 | |
78593d78 | 593 | if (__large_ignore) |
6725add5 | 594 | _M_gcount = __gnu_cxx::__numeric_traits<streamsize>::__max; |
78593d78 | 595 | |
a141a5af | 596 | if (traits_type::eq_int_type(__c, __eof)) |
adb31ad6 | 597 | __err |= ios_base::eofbit; |
a141a5af | 598 | else if (traits_type::eq_int_type(__c, __delim)) |
bea53dbf | 599 | { |
6725add5 PC |
600 | if (_M_gcount |
601 | < __gnu_cxx::__numeric_traits<streamsize>::__max) | |
78593d78 | 602 | ++_M_gcount; |
bea53dbf PC |
603 | __sb->sbumpc(); |
604 | } | |
adb31ad6 | 605 | } |
bc2631e0 | 606 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
607 | { |
608 | this->_M_setstate(ios_base::badbit); | |
609 | __throw_exception_again; | |
610 | } | |
bc2631e0 | 611 | __catch(...) |
adb31ad6 PC |
612 | { this->_M_setstate(ios_base::badbit); } |
613 | if (__err) | |
614 | this->setstate(__err); | |
615 | } | |
725dc051 BK |
616 | return *this; |
617 | } | |
ed6814f7 | 618 | |
725dc051 | 619 | template<typename _CharT, typename _Traits> |
31bfa177 | 620 | typename basic_istream<_CharT, _Traits>::int_type |
725dc051 BK |
621 | basic_istream<_CharT, _Traits>:: |
622 | peek(void) | |
623 | { | |
624 | int_type __c = traits_type::eof(); | |
625 | _M_gcount = 0; | |
626 | sentry __cerb(*this, true); | |
880b527f | 627 | if (__cerb) |
725dc051 | 628 | { |
6f0398bb | 629 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 630 | __try |
e5012ba5 PC |
631 | { |
632 | __c = this->rdbuf()->sgetc(); | |
633 | if (traits_type::eq_int_type(__c, traits_type::eof())) | |
12841eb3 | 634 | __err |= ios_base::eofbit; |
e5012ba5 | 635 | } |
bc2631e0 | 636 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
637 | { |
638 | this->_M_setstate(ios_base::badbit); | |
639 | __throw_exception_again; | |
640 | } | |
bc2631e0 | 641 | __catch(...) |
12841eb3 | 642 | { this->_M_setstate(ios_base::badbit); } |
6b98580b BK |
643 | if (__err) |
644 | this->setstate(__err); | |
ed6814f7 | 645 | } |
725dc051 BK |
646 | return __c; |
647 | } | |
648 | ||
649 | template<typename _CharT, typename _Traits> | |
650 | basic_istream<_CharT, _Traits>& | |
651 | basic_istream<_CharT, _Traits>:: | |
652 | read(char_type* __s, streamsize __n) | |
653 | { | |
654 | _M_gcount = 0; | |
655 | sentry __cerb(*this, true); | |
880b527f | 656 | if (__cerb) |
725dc051 | 657 | { |
6f0398bb | 658 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 659 | __try |
725dc051 | 660 | { |
6280bdbe | 661 | _M_gcount = this->rdbuf()->sgetn(__s, __n); |
b2e4f4fd | 662 | if (_M_gcount != __n) |
12841eb3 | 663 | __err |= (ios_base::eofbit | ios_base::failbit); |
ed6814f7 | 664 | } |
bc2631e0 | 665 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
666 | { |
667 | this->_M_setstate(ios_base::badbit); | |
668 | __throw_exception_again; | |
669 | } | |
bc2631e0 | 670 | __catch(...) |
12841eb3 | 671 | { this->_M_setstate(ios_base::badbit); } |
6b98580b BK |
672 | if (__err) |
673 | this->setstate(__err); | |
725dc051 | 674 | } |
725dc051 BK |
675 | return *this; |
676 | } | |
ed6814f7 | 677 | |
725dc051 | 678 | template<typename _CharT, typename _Traits> |
ed6814f7 | 679 | streamsize |
725dc051 BK |
680 | basic_istream<_CharT, _Traits>:: |
681 | readsome(char_type* __s, streamsize __n) | |
682 | { | |
725dc051 BK |
683 | _M_gcount = 0; |
684 | sentry __cerb(*this, true); | |
880b527f | 685 | if (__cerb) |
725dc051 | 686 | { |
6f0398bb | 687 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 688 | __try |
725dc051 | 689 | { |
112615e7 | 690 | // Cannot compare int_type with streamsize generically. |
32da6208 PC |
691 | const streamsize __num = this->rdbuf()->in_avail(); |
692 | if (__num > 0) | |
6280bdbe | 693 | _M_gcount = this->rdbuf()->sgetn(__s, std::min(__num, __n)); |
32da6208 | 694 | else if (__num == -1) |
12841eb3 | 695 | __err |= ios_base::eofbit; |
36ce7daa | 696 | } |
bc2631e0 | 697 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
698 | { |
699 | this->_M_setstate(ios_base::badbit); | |
700 | __throw_exception_again; | |
701 | } | |
bc2631e0 | 702 | __catch(...) |
12841eb3 | 703 | { this->_M_setstate(ios_base::badbit); } |
6b98580b BK |
704 | if (__err) |
705 | this->setstate(__err); | |
725dc051 | 706 | } |
725dc051 BK |
707 | return _M_gcount; |
708 | } | |
ed6814f7 | 709 | |
725dc051 BK |
710 | template<typename _CharT, typename _Traits> |
711 | basic_istream<_CharT, _Traits>& | |
712 | basic_istream<_CharT, _Traits>:: | |
713 | putback(char_type __c) | |
714 | { | |
f5677b15 PC |
715 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
716 | // 60. What is a formatted input function? | |
23cac885 | 717 | _M_gcount = 0; |
2ca2a899 PC |
718 | // Clear eofbit per N3168. |
719 | this->clear(this->rdstate() & ~ios_base::eofbit); | |
725dc051 | 720 | sentry __cerb(*this, true); |
880b527f | 721 | if (__cerb) |
725dc051 | 722 | { |
6f0398bb | 723 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 724 | __try |
bfa1e6b1 BK |
725 | { |
726 | const int_type __eof = traits_type::eof(); | |
727 | __streambuf_type* __sb = this->rdbuf(); | |
ed6814f7 | 728 | if (!__sb |
f13a69ec | 729 | || traits_type::eq_int_type(__sb->sputbackc(__c), __eof)) |
12841eb3 | 730 | __err |= ios_base::badbit; |
bfa1e6b1 | 731 | } |
bc2631e0 | 732 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
733 | { |
734 | this->_M_setstate(ios_base::badbit); | |
735 | __throw_exception_again; | |
736 | } | |
bc2631e0 | 737 | __catch(...) |
12841eb3 | 738 | { this->_M_setstate(ios_base::badbit); } |
6b98580b BK |
739 | if (__err) |
740 | this->setstate(__err); | |
725dc051 | 741 | } |
725dc051 BK |
742 | return *this; |
743 | } | |
ed6814f7 | 744 | |
725dc051 BK |
745 | template<typename _CharT, typename _Traits> |
746 | basic_istream<_CharT, _Traits>& | |
747 | basic_istream<_CharT, _Traits>:: | |
748 | unget(void) | |
749 | { | |
f5677b15 PC |
750 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
751 | // 60. What is a formatted input function? | |
725dc051 | 752 | _M_gcount = 0; |
2ca2a899 PC |
753 | // Clear eofbit per N3168. |
754 | this->clear(this->rdstate() & ~ios_base::eofbit); | |
725dc051 | 755 | sentry __cerb(*this, true); |
880b527f | 756 | if (__cerb) |
725dc051 | 757 | { |
6f0398bb | 758 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 759 | __try |
bfa1e6b1 BK |
760 | { |
761 | const int_type __eof = traits_type::eof(); | |
762 | __streambuf_type* __sb = this->rdbuf(); | |
ed6814f7 | 763 | if (!__sb |
f13a69ec | 764 | || traits_type::eq_int_type(__sb->sungetc(), __eof)) |
12841eb3 | 765 | __err |= ios_base::badbit; |
bfa1e6b1 | 766 | } |
bc2631e0 | 767 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
768 | { |
769 | this->_M_setstate(ios_base::badbit); | |
770 | __throw_exception_again; | |
771 | } | |
bc2631e0 | 772 | __catch(...) |
12841eb3 | 773 | { this->_M_setstate(ios_base::badbit); } |
6b98580b BK |
774 | if (__err) |
775 | this->setstate(__err); | |
725dc051 | 776 | } |
725dc051 BK |
777 | return *this; |
778 | } | |
ed6814f7 | 779 | |
725dc051 BK |
780 | template<typename _CharT, typename _Traits> |
781 | int | |
782 | basic_istream<_CharT, _Traits>:: | |
783 | sync(void) | |
784 | { | |
12841eb3 | 785 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
6894ddcf | 786 | // DR60. Do not change _M_gcount. |
f13a69ec | 787 | int __ret = -1; |
725dc051 | 788 | sentry __cerb(*this, true); |
880b527f | 789 | if (__cerb) |
725dc051 | 790 | { |
6f0398bb | 791 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 792 | __try |
bfa1e6b1 BK |
793 | { |
794 | __streambuf_type* __sb = this->rdbuf(); | |
f13a69ec BK |
795 | if (__sb) |
796 | { | |
797 | if (__sb->pubsync() == -1) | |
12841eb3 | 798 | __err |= ios_base::badbit; |
ed6814f7 | 799 | else |
f13a69ec BK |
800 | __ret = 0; |
801 | } | |
bfa1e6b1 | 802 | } |
bc2631e0 | 803 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
804 | { |
805 | this->_M_setstate(ios_base::badbit); | |
806 | __throw_exception_again; | |
807 | } | |
bc2631e0 | 808 | __catch(...) |
12841eb3 | 809 | { this->_M_setstate(ios_base::badbit); } |
6b98580b BK |
810 | if (__err) |
811 | this->setstate(__err); | |
725dc051 BK |
812 | } |
813 | return __ret; | |
814 | } | |
ed6814f7 | 815 | |
725dc051 BK |
816 | template<typename _CharT, typename _Traits> |
817 | typename basic_istream<_CharT, _Traits>::pos_type | |
818 | basic_istream<_CharT, _Traits>:: | |
819 | tellg(void) | |
820 | { | |
12841eb3 | 821 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
d8c30611 | 822 | // DR60. Do not change _M_gcount. |
725dc051 | 823 | pos_type __ret = pos_type(-1); |
2ca2a899 PC |
824 | sentry __cerb(*this, true); |
825 | if (__cerb) | |
d05f74f1 | 826 | { |
2ca2a899 PC |
827 | __try |
828 | { | |
829 | if (!this->fail()) | |
830 | __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, | |
831 | ios_base::in); | |
832 | } | |
833 | __catch(__cxxabiv1::__forced_unwind&) | |
834 | { | |
835 | this->_M_setstate(ios_base::badbit); | |
836 | __throw_exception_again; | |
837 | } | |
838 | __catch(...) | |
839 | { this->_M_setstate(ios_base::badbit); } | |
d05f74f1 | 840 | } |
725dc051 BK |
841 | return __ret; |
842 | } | |
843 | ||
725dc051 BK |
844 | template<typename _CharT, typename _Traits> |
845 | basic_istream<_CharT, _Traits>& | |
846 | basic_istream<_CharT, _Traits>:: | |
847 | seekg(pos_type __pos) | |
848 | { | |
12841eb3 | 849 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
6894ddcf | 850 | // DR60. Do not change _M_gcount. |
2ca2a899 PC |
851 | // Clear eofbit per N3168. |
852 | this->clear(this->rdstate() & ~ios_base::eofbit); | |
853 | sentry __cerb(*this, true); | |
854 | if (__cerb) | |
725dc051 | 855 | { |
2ca2a899 PC |
856 | ios_base::iostate __err = ios_base::goodbit; |
857 | __try | |
12841eb3 | 858 | { |
2ca2a899 PC |
859 | if (!this->fail()) |
860 | { | |
861 | // 136. seekp, seekg setting wrong streams? | |
862 | const pos_type __p = this->rdbuf()->pubseekpos(__pos, | |
863 | ios_base::in); | |
864 | ||
865 | // 129. Need error indication from seekp() and seekg() | |
866 | if (__p == pos_type(off_type(-1))) | |
867 | __err |= ios_base::failbit; | |
868 | } | |
12841eb3 | 869 | } |
2ca2a899 PC |
870 | __catch(__cxxabiv1::__forced_unwind&) |
871 | { | |
872 | this->_M_setstate(ios_base::badbit); | |
873 | __throw_exception_again; | |
874 | } | |
875 | __catch(...) | |
876 | { this->_M_setstate(ios_base::badbit); } | |
877 | if (__err) | |
878 | this->setstate(__err); | |
725dc051 BK |
879 | } |
880 | return *this; | |
881 | } | |
882 | ||
883 | template<typename _CharT, typename _Traits> | |
884 | basic_istream<_CharT, _Traits>& | |
885 | basic_istream<_CharT, _Traits>:: | |
886 | seekg(off_type __off, ios_base::seekdir __dir) | |
887 | { | |
12841eb3 | 888 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
6894ddcf | 889 | // DR60. Do not change _M_gcount. |
2ca2a899 PC |
890 | // Clear eofbit per N3168. |
891 | this->clear(this->rdstate() & ~ios_base::eofbit); | |
892 | sentry __cerb(*this, true); | |
893 | if (__cerb) | |
725dc051 | 894 | { |
2ca2a899 PC |
895 | ios_base::iostate __err = ios_base::goodbit; |
896 | __try | |
12841eb3 | 897 | { |
2ca2a899 PC |
898 | if (!this->fail()) |
899 | { | |
900 | // 136. seekp, seekg setting wrong streams? | |
901 | const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir, | |
902 | ios_base::in); | |
c849c938 | 903 | |
2ca2a899 PC |
904 | // 129. Need error indication from seekp() and seekg() |
905 | if (__p == pos_type(off_type(-1))) | |
906 | __err |= ios_base::failbit; | |
907 | } | |
12841eb3 | 908 | } |
2ca2a899 PC |
909 | __catch(__cxxabiv1::__forced_unwind&) |
910 | { | |
911 | this->_M_setstate(ios_base::badbit); | |
912 | __throw_exception_again; | |
913 | } | |
914 | __catch(...) | |
915 | { this->_M_setstate(ios_base::badbit); } | |
916 | if (__err) | |
917 | this->setstate(__err); | |
725dc051 BK |
918 | } |
919 | return *this; | |
920 | } | |
921 | ||
922 | // 27.6.1.2.3 Character extraction templates | |
923 | template<typename _CharT, typename _Traits> | |
924 | basic_istream<_CharT, _Traits>& | |
925 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT& __c) | |
926 | { | |
ed6814f7 | 927 | typedef basic_istream<_CharT, _Traits> __istream_type; |
3adf6cad PC |
928 | typedef typename __istream_type::int_type __int_type; |
929 | ||
bcd0cabb | 930 | typename __istream_type::sentry __cerb(__in, false); |
880b527f | 931 | if (__cerb) |
725dc051 | 932 | { |
6f0398bb | 933 | ios_base::iostate __err = ios_base::goodbit; |
bc2631e0 | 934 | __try |
bfa1e6b1 | 935 | { |
3adf6cad | 936 | const __int_type __cb = __in.rdbuf()->sbumpc(); |
12841eb3 BK |
937 | if (!_Traits::eq_int_type(__cb, _Traits::eof())) |
938 | __c = _Traits::to_char_type(__cb); | |
939 | else | |
940 | __err |= (ios_base::eofbit | ios_base::failbit); | |
bfa1e6b1 | 941 | } |
bc2631e0 | 942 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
943 | { |
944 | __in._M_setstate(ios_base::badbit); | |
945 | __throw_exception_again; | |
946 | } | |
bc2631e0 | 947 | __catch(...) |
12841eb3 | 948 | { __in._M_setstate(ios_base::badbit); } |
6b98580b BK |
949 | if (__err) |
950 | __in.setstate(__err); | |
725dc051 | 951 | } |
725dc051 BK |
952 | return __in; |
953 | } | |
954 | ||
955 | template<typename _CharT, typename _Traits> | |
956 | basic_istream<_CharT, _Traits>& | |
957 | operator>>(basic_istream<_CharT, _Traits>& __in, _CharT* __s) | |
958 | { | |
ed6814f7 | 959 | typedef basic_istream<_CharT, _Traits> __istream_type; |
11202768 | 960 | typedef basic_streambuf<_CharT, _Traits> __streambuf_type; |
ed6814f7 BI |
961 | typedef typename _Traits::int_type int_type; |
962 | typedef _CharT char_type; | |
963 | typedef ctype<_CharT> __ctype_type; | |
725dc051 | 964 | |
12841eb3 | 965 | streamsize __extracted = 0; |
6f0398bb | 966 | ios_base::iostate __err = ios_base::goodbit; |
bcd0cabb | 967 | typename __istream_type::sentry __cerb(__in, false); |
880b527f | 968 | if (__cerb) |
725dc051 | 969 | { |
bc2631e0 | 970 | __try |
bfa1e6b1 BK |
971 | { |
972 | // Figure out how many characters to extract. | |
973 | streamsize __num = __in.width(); | |
1e64c2fc | 974 | if (__num <= 0) |
6725add5 | 975 | __num = __gnu_cxx::__numeric_traits<streamsize>::__max; |
ed6814f7 | 976 | |
2803847d BK |
977 | const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc()); |
978 | ||
40e5b283 | 979 | const int_type __eof = _Traits::eof(); |
bfa1e6b1 | 980 | __streambuf_type* __sb = __in.rdbuf(); |
42ca0438 | 981 | int_type __c = __sb->sgetc(); |
ed6814f7 BI |
982 | |
983 | while (__extracted < __num - 1 | |
112615e7 | 984 | && !_Traits::eq_int_type(__c, __eof) |
ed6814f7 | 985 | && !__ct.is(ctype_base::space, |
2803847d | 986 | _Traits::to_char_type(__c))) |
bfa1e6b1 | 987 | { |
1deba98b | 988 | *__s++ = _Traits::to_char_type(__c); |
bfa1e6b1 | 989 | ++__extracted; |
42ca0438 | 990 | __c = __sb->snextc(); |
bfa1e6b1 | 991 | } |
112615e7 | 992 | if (_Traits::eq_int_type(__c, __eof)) |
12841eb3 | 993 | __err |= ios_base::eofbit; |
725dc051 | 994 | |
f5677b15 PC |
995 | // _GLIBCXX_RESOLVE_LIB_DEFECTS |
996 | // 68. Extractors for char* should store null at end | |
bfa1e6b1 | 997 | *__s = char_type(); |
bfa1e6b1 BK |
998 | __in.width(0); |
999 | } | |
bc2631e0 | 1000 | __catch(__cxxabiv1::__forced_unwind&) |
d05f74f1 JM |
1001 | { |
1002 | __in._M_setstate(ios_base::badbit); | |
1003 | __throw_exception_again; | |
1004 | } | |
bc2631e0 | 1005 | __catch(...) |
12841eb3 | 1006 | { __in._M_setstate(ios_base::badbit); } |
725dc051 BK |
1007 | } |
1008 | if (!__extracted) | |
12841eb3 | 1009 | __err |= ios_base::failbit; |
6b98580b BK |
1010 | if (__err) |
1011 | __in.setstate(__err); | |
725dc051 BK |
1012 | return __in; |
1013 | } | |
1014 | ||
1015 | // 27.6.1.4 Standard basic_istream manipulators | |
1016 | template<typename _CharT, typename _Traits> | |
11202768 PC |
1017 | basic_istream<_CharT, _Traits>& |
1018 | ws(basic_istream<_CharT, _Traits>& __in) | |
725dc051 | 1019 | { |
ed6814f7 | 1020 | typedef basic_istream<_CharT, _Traits> __istream_type; |
11202768 | 1021 | typedef basic_streambuf<_CharT, _Traits> __streambuf_type; |
ed6814f7 | 1022 | typedef typename __istream_type::int_type __int_type; |
11202768 | 1023 | typedef ctype<_CharT> __ctype_type; |
725dc051 | 1024 | |
2803847d | 1025 | const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc()); |
ed6814f7 | 1026 | const __int_type __eof = _Traits::eof(); |
42ca0438 BK |
1027 | __streambuf_type* __sb = __in.rdbuf(); |
1028 | __int_type __c = __sb->sgetc(); | |
725dc051 | 1029 | |
ed6814f7 | 1030 | while (!_Traits::eq_int_type(__c, __eof) |
2803847d | 1031 | && __ct.is(ctype_base::space, _Traits::to_char_type(__c))) |
42ca0438 | 1032 | __c = __sb->snextc(); |
112615e7 BK |
1033 | |
1034 | if (_Traits::eq_int_type(__c, __eof)) | |
12841eb3 | 1035 | __in.setstate(ios_base::eofbit); |
725dc051 BK |
1036 | return __in; |
1037 | } | |
1038 | ||
a32e3c09 | 1039 | // Inhibit implicit instantiations for required instantiations, |
ed6814f7 | 1040 | // which are defined via explicit instantiations elsewhere. |
a32e3c09 | 1041 | // NB: This syntax is a GNU extension. |
3d7c150e | 1042 | #if _GLIBCXX_EXTERN_TEMPLATE |
a32e3c09 BK |
1043 | extern template class basic_istream<char>; |
1044 | extern template istream& ws(istream&); | |
1045 | extern template istream& operator>>(istream&, char&); | |
1046 | extern template istream& operator>>(istream&, char*); | |
1047 | extern template istream& operator>>(istream&, unsigned char&); | |
1048 | extern template istream& operator>>(istream&, signed char&); | |
1049 | extern template istream& operator>>(istream&, unsigned char*); | |
1050 | extern template istream& operator>>(istream&, signed char*); | |
1051 | ||
f12409e6 PC |
1052 | extern template istream& istream::_M_extract(unsigned short&); |
1053 | extern template istream& istream::_M_extract(unsigned int&); | |
1054 | extern template istream& istream::_M_extract(long&); | |
1055 | extern template istream& istream::_M_extract(unsigned long&); | |
1056 | extern template istream& istream::_M_extract(bool&); | |
1057 | #ifdef _GLIBCXX_USE_LONG_LONG | |
1058 | extern template istream& istream::_M_extract(long long&); | |
1059 | extern template istream& istream::_M_extract(unsigned long long&); | |
1060 | #endif | |
1061 | extern template istream& istream::_M_extract(float&); | |
1062 | extern template istream& istream::_M_extract(double&); | |
1063 | extern template istream& istream::_M_extract(long double&); | |
1064 | extern template istream& istream::_M_extract(void*&); | |
1065 | ||
98599ff8 BK |
1066 | extern template class basic_iostream<char>; |
1067 | ||
3d7c150e | 1068 | #ifdef _GLIBCXX_USE_WCHAR_T |
a32e3c09 BK |
1069 | extern template class basic_istream<wchar_t>; |
1070 | extern template wistream& ws(wistream&); | |
1071 | extern template wistream& operator>>(wistream&, wchar_t&); | |
1072 | extern template wistream& operator>>(wistream&, wchar_t*); | |
98599ff8 | 1073 | |
f12409e6 PC |
1074 | extern template wistream& wistream::_M_extract(unsigned short&); |
1075 | extern template wistream& wistream::_M_extract(unsigned int&); | |
1076 | extern template wistream& wistream::_M_extract(long&); | |
1077 | extern template wistream& wistream::_M_extract(unsigned long&); | |
1078 | extern template wistream& wistream::_M_extract(bool&); | |
1079 | #ifdef _GLIBCXX_USE_LONG_LONG | |
1080 | extern template wistream& wistream::_M_extract(long long&); | |
1081 | extern template wistream& wistream::_M_extract(unsigned long long&); | |
1082 | #endif | |
1083 | extern template wistream& wistream::_M_extract(float&); | |
1084 | extern template wistream& wistream::_M_extract(double&); | |
1085 | extern template wistream& wistream::_M_extract(long double&); | |
1086 | extern template wistream& wistream::_M_extract(void*&); | |
1087 | ||
98599ff8 | 1088 | extern template class basic_iostream<wchar_t>; |
3522a91b | 1089 | #endif |
1bc8b0ad | 1090 | #endif |
3cbc7af0 | 1091 | |
12ffa228 BK |
1092 | _GLIBCXX_END_NAMESPACE_VERSION |
1093 | } // namespace | |
3d7c150e BK |
1094 | |
1095 | #endif |