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The C and C++ Include Header Files
/usr/include/c++/13/bits/ostream.tcc
$ cat -n /usr/include/c++/13/bits/ostream.tcc 1 // ostream classes -*- C++ -*- 2 3 // Copyright (C) 1997-2023 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 if (__os.bad()) 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 #ifndef _GLIBCXX_LONG_DOUBLE_ALT128_COMPAT 73 const __num_put_type& __np = __check_facet(this->_M_num_put); 74 #else 75 const __num_put_type& __np 76 = use_facet<__num_put_type>(this->_M_ios_locale); 77 #endif 78 if (__np.put(*this, *this, this->fill(), __v).failed()) 79 __err |= ios_base::badbit; 80 } 81 __catch(__cxxabiv1::__forced_unwind&) 82 { 83 this->_M_setstate(ios_base::badbit); 84 __throw_exception_again; 85 } 86 __catch(...) 87 { this->_M_setstate(ios_base::badbit); } 88 if (__err) 89 this->setstate(__err); 90 } 91 return *this; 92 } 93 94 template<typename _CharT, typename _Traits> 95 basic_ostream<_CharT, _Traits>& 96 basic_ostream<_CharT, _Traits>:: 97 operator<<(short __n) 98 { 99 // _GLIBCXX_RESOLVE_LIB_DEFECTS 100 // 117. basic_ostream uses nonexistent num_put member functions. 101 const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield; 102 if (__fmt == ios_base::oct || __fmt == ios_base::hex) 103 return _M_insert(static_cast<long>(static_cast<unsigned short>(__n))); 104 else 105 return _M_insert(static_cast<long>(__n)); 106 } 107 108 template<typename _CharT, typename _Traits> 109 basic_ostream<_CharT, _Traits>& 110 basic_ostream<_CharT, _Traits>:: 111 operator<<(int __n) 112 { 113 // _GLIBCXX_RESOLVE_LIB_DEFECTS 114 // 117. basic_ostream uses nonexistent num_put member functions. 115 const ios_base::fmtflags __fmt = this->flags() & ios_base::basefield; 116 if (__fmt == ios_base::oct || __fmt == ios_base::hex) 117 return _M_insert(static_cast<long>(static_cast<unsigned int>(__n))); 118 else 119 return _M_insert(static_cast<long>(__n)); 120 } 121 122 template<typename _CharT, typename _Traits> 123 basic_ostream<_CharT, _Traits>& 124 basic_ostream<_CharT, _Traits>:: 125 operator<<(__streambuf_type* __sbin) 126 { 127 ios_base::iostate __err = ios_base::goodbit; 128 sentry __cerb(*this); 129 if (__cerb && __sbin) 130 { 131 __try 132 { 133 if (!__copy_streambufs(__sbin, this->rdbuf())) 134 __err |= ios_base::failbit; 135 } 136 __catch(__cxxabiv1::__forced_unwind&) 137 { 138 this->_M_setstate(ios_base::badbit); 139 __throw_exception_again; 140 } 141 __catch(...) 142 { this->_M_setstate(ios_base::failbit); } 143 } 144 else if (!__sbin) 145 __err |= ios_base::badbit; 146 if (__err) 147 this->setstate(__err); 148 return *this; 149 } 150 151 template<typename _CharT, typename _Traits> 152 basic_ostream<_CharT, _Traits>& 153 basic_ostream<_CharT, _Traits>:: 154 put(char_type __c) 155 { 156 // _GLIBCXX_RESOLVE_LIB_DEFECTS 157 // DR 60. What is a formatted input function? 158 // basic_ostream::put(char_type) is an unformatted output function. 159 // DR 63. Exception-handling policy for unformatted output. 160 // Unformatted output functions should catch exceptions thrown 161 // from streambuf members. 162 sentry __cerb(*this); 163 if (__cerb) 164 { 165 ios_base::iostate __err = ios_base::goodbit; 166 __try 167 { 168 const int_type __put = this->rdbuf()->sputc(__c); 169 if (traits_type::eq_int_type(__put, traits_type::eof())) 170 __err |= ios_base::badbit; 171 } 172 __catch(__cxxabiv1::__forced_unwind&) 173 { 174 this->_M_setstate(ios_base::badbit); 175 __throw_exception_again; 176 } 177 __catch(...) 178 { this->_M_setstate(ios_base::badbit); } 179 if (__err) 180 this->setstate(__err); 181 } 182 return *this; 183 } 184 185 template<typename _CharT, typename _Traits> 186 basic_ostream<_CharT, _Traits>& 187 basic_ostream<_CharT, _Traits>:: 188 write(const _CharT* __s, streamsize __n) 189 { 190 // _GLIBCXX_RESOLVE_LIB_DEFECTS 191 // DR 60. What is a formatted input function? 192 // basic_ostream::write(const char_type*, streamsize) is an 193 // unformatted output function. 194 // DR 63. Exception-handling policy for unformatted output. 195 // Unformatted output functions should catch exceptions thrown 196 // from streambuf members. 197 sentry __cerb(*this); 198 if (__cerb) 199 { 200 ios_base::iostate __err = ios_base::goodbit; 201 __try 202 { 203 if (this->rdbuf()->sputn(__s, __n) != __n) 204 __err = ios_base::badbit; 205 } 206 __catch(__cxxabiv1::__forced_unwind&) 207 { 208 this->_M_setstate(ios_base::badbit); 209 __throw_exception_again; 210 } 211 __catch(...) 212 { this->_M_setstate(ios_base::badbit); } 213 if (__err) 214 this->setstate(ios_base::badbit); 215 } 216 return *this; 217 } 218 219 template<typename _CharT, typename _Traits> 220 basic_ostream<_CharT, _Traits>& 221 basic_ostream<_CharT, _Traits>:: 222 flush() 223 { 224 // _GLIBCXX_RESOLVE_LIB_DEFECTS 225 // DR 60. What is a formatted input function? 226 // basic_ostream::flush() is *not* an unformatted output function. 227 // 581. flush() not unformatted function 228 // basic_ostream::flush() *is* an unformatted output function. 229 if (__streambuf_type* __buf = this->rdbuf()) 230 { 231 sentry __cerb(*this); 232 if (__cerb) 233 { 234 ios_base::iostate __err = ios_base::goodbit; 235 __try 236 { 237 if (this->rdbuf()->pubsync() == -1) 238 __err |= ios_base::badbit; 239 } 240 __catch(__cxxabiv1::__forced_unwind&) 241 { 242 this->_M_setstate(ios_base::badbit); 243 __throw_exception_again; 244 } 245 __catch(...) 246 { this->_M_setstate(ios_base::badbit); } 247 if (__err) 248 this->setstate(__err); 249 } 250 } 251 return *this; 252 } 253 254 template<typename _CharT, typename _Traits> 255 typename basic_ostream<_CharT, _Traits>::pos_type 256 basic_ostream<_CharT, _Traits>:: 257 tellp() 258 { 259 sentry __cerb(*this); 260 pos_type __ret = pos_type(-1); 261 if (!this->fail()) 262 __ret = this->rdbuf()->pubseekoff(0, ios_base::cur, ios_base::out); 263 return __ret; 264 } 265 266 template<typename _CharT, typename _Traits> 267 basic_ostream<_CharT, _Traits>& 268 basic_ostream<_CharT, _Traits>:: 269 seekp(pos_type __pos) 270 { 271 sentry __cerb(*this); 272 if (!this->fail()) 273 { 274 // _GLIBCXX_RESOLVE_LIB_DEFECTS 275 // 136. seekp, seekg setting wrong streams? 276 const pos_type __p = this->rdbuf()->pubseekpos(__pos, ios_base::out); 277 278 // 129. Need error indication from seekp() and seekg() 279 if (__p == pos_type(off_type(-1))) 280 this->setstate(ios_base::failbit); 281 } 282 return *this; 283 } 284 285 template<typename _CharT, typename _Traits> 286 basic_ostream<_CharT, _Traits>& 287 basic_ostream<_CharT, _Traits>:: 288 seekp(off_type __off, ios_base::seekdir __dir) 289 { 290 sentry __cerb(*this); 291 if (!this->fail()) 292 { 293 // _GLIBCXX_RESOLVE_LIB_DEFECTS 294 // 136. seekp, seekg setting wrong streams? 295 const pos_type __p = this->rdbuf()->pubseekoff(__off, __dir, 296 ios_base::out); 297 298 // 129. Need error indication from seekp() and seekg() 299 if (__p == pos_type(off_type(-1))) 300 this->setstate(ios_base::failbit); 301 } 302 return *this; 303 } 304 305 template<typename _CharT, typename _Traits> 306 basic_ostream<_CharT, _Traits>& 307 operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s) 308 { 309 if (!__s) 310 __out.setstate(ios_base::badbit); 311 else 312 { 313 // _GLIBCXX_RESOLVE_LIB_DEFECTS 314 // 167. Improper use of traits_type::length() 315 const size_t __clen = char_traits<char>::length(__s); 316 __try 317 { 318 struct __ptr_guard 319 { 320 _CharT *__p; 321 __ptr_guard (_CharT *__ip): __p(__ip) { } 322 ~__ptr_guard() { delete[] __p; } 323 _CharT* __get() { return __p; } 324 } __pg (new _CharT[__clen]); 325 326 _CharT *__ws = __pg.__get(); 327 for (size_t __i = 0; __i < __clen; ++__i) 328 __ws[__i] = __out.widen(__s[__i]); 329 __ostream_insert(__out, __ws, __clen); 330 } 331 __catch(__cxxabiv1::__forced_unwind&) 332 { 333 __out._M_setstate(ios_base::badbit); 334 __throw_exception_again; 335 } 336 __catch(...) 337 { __out._M_setstate(ios_base::badbit); } 338 } 339 return __out; 340 } 341 342 // Inhibit implicit instantiations for required instantiations, 343 // which are defined via explicit instantiations elsewhere. 344 #if _GLIBCXX_EXTERN_TEMPLATE 345 extern template class basic_ostream<char>; 346 extern template ostream& endl(ostream&); 347 extern template ostream& ends(ostream&); 348 extern template ostream& flush(ostream&); 349 extern template ostream& operator<<(ostream&, char); 350 extern template ostream& operator<<(ostream&, unsigned char); 351 extern template ostream& operator<<(ostream&, signed char); 352 extern template ostream& operator<<(ostream&, const char*); 353 extern template ostream& operator<<(ostream&, const unsigned char*); 354 extern template ostream& operator<<(ostream&, const signed char*); 355 356 extern template ostream& ostream::_M_insert(long); 357 extern template ostream& ostream::_M_insert(unsigned long); 358 extern template ostream& ostream::_M_insert(bool); 359 #ifdef _GLIBCXX_USE_LONG_LONG 360 extern template ostream& ostream::_M_insert(long long); 361 extern template ostream& ostream::_M_insert(unsigned long long); 362 #endif 363 extern template ostream& ostream::_M_insert(double); 364 extern template ostream& ostream::_M_insert(long double); 365 extern template ostream& ostream::_M_insert(const void*); 366 367 #ifdef _GLIBCXX_USE_WCHAR_T 368 extern template class basic_ostream<wchar_t>; 369 extern template wostream& endl(wostream&); 370 extern template wostream& ends(wostream&); 371 extern template wostream& flush(wostream&); 372 extern template wostream& operator<<(wostream&, wchar_t); 373 extern template wostream& operator<<(wostream&, char); 374 extern template wostream& operator<<(wostream&, const wchar_t*); 375 extern template wostream& operator<<(wostream&, const char*); 376 377 extern template wostream& wostream::_M_insert(long); 378 extern template wostream& wostream::_M_insert(unsigned long); 379 extern template wostream& wostream::_M_insert(bool); 380 #ifdef _GLIBCXX_USE_LONG_LONG 381 extern template wostream& wostream::_M_insert(long long); 382 extern template wostream& wostream::_M_insert(unsigned long long); 383 #endif 384 extern template wostream& wostream::_M_insert(double); 385 extern template wostream& wostream::_M_insert(long double); 386 extern template wostream& wostream::_M_insert(const void*); 387 #endif 388 #endif 389 390 _GLIBCXX_END_NAMESPACE_VERSION 391 } // namespace std 392 393 #endif
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