libstdc++-v3/include/bits/vector.tcc

   1 // Vector implementation (out of line) -*- C++ -*-
   2
   3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
   4 // 2011 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 3, 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 // Under Section 7 of GPL version 3, you are granted additional
  18 // permissions described in the GCC Runtime Library Exception, version
  19 // 3.1, as published by the Free Software Foundation.
  20
  21 // You should have received a copy of the GNU General Public License and
  22 // a copy of the GCC Runtime Library Exception along with this program;
  23 // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  24 // <http://www.gnu.org/licenses/>.
  25
  26 /*
  27  *
  28  * Copyright (c) 1994
  29  * Hewlett-Packard Company
  30  *
  31  * Permission to use, copy, modify, distribute and sell this software
  32  * and its documentation for any purpose is hereby granted without fee,
  33  * provided that the above copyright notice appear in all copies and
  34  * that both that copyright notice and this permission notice appear
  35  * in supporting documentation.  Hewlett-Packard Company makes no
  36  * representations about the suitability of this software for any
  37  * purpose.  It is provided "as is" without express or implied warranty.
  38  *
  39  *
  40  * Copyright (c) 1996
  41  * Silicon Graphics Computer Systems, Inc.
  42  *
  43  * Permission to use, copy, modify, distribute and sell this software
  44  * and its documentation for any purpose is hereby granted without fee,
  45  * provided that the above copyright notice appear in all copies and
  46  * that both that copyright notice and this permission notice appear
  47  * in supporting documentation.  Silicon Graphics makes no
  48  * representations about the suitability of this  software for any
  49  * purpose.  It is provided "as is" without express or implied warranty.
  50  */
  51
  52 /** @file bits/vector.tcc
  53  *  This is an internal header file, included by other library headers.
  54  *  Do not attempt to use it directly. @headername{vector}
  55  */
  56
  57 #ifndef _VECTOR_TCC
  58 #define _VECTOR_TCC 1
  59
  60 namespace std _GLIBCXX_VISIBILITY(default)
  61 {
  62 _GLIBCXX_BEGIN_NAMESPACE_CONTAINER
  63
  64   template<typename _Tp, typename _Alloc>
  65     void
  66     vector<_Tp, _Alloc>::
  67     reserve(size_type __n)
  68     {
  69       if (__n > this->max_size())
  70         __throw_length_error(__N("vector::reserve"));
  71       if (this->capacity() < __n)
  72         {
  73           const size_type __old_size = size();
  74           pointer __tmp = _M_allocate_and_copy(__n,
  75             _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_start),
  76             _GLIBCXX_MAKE_MOVE_IF_NOEXCEPT_ITERATOR(this->_M_impl._M_finish));
  77           std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
  78                         _M_get_Tp_allocator());
  79           _M_deallocate(this->_M_impl._M_start,
  80                         this->_M_impl._M_end_of_storage
  81                         - this->_M_impl._M_start);
  82           this->_M_impl._M_start = __tmp;
  83           this->_M_impl._M_finish = __tmp + __old_size;
  84           this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
  85         }
  86     }
  87
  88 #ifdef __GXX_EXPERIMENTAL_CXX0X__
  89   template<typename _Tp, typename _Alloc>
  90     template<typename... _Args>
  91       void
  92       vector<_Tp, _Alloc>::
  93       emplace_back(_Args&&... __args)
  94       {
  95         if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
  96           {
  97             _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
  98                                      std::forward<_Args>(__args)...);
  99             ++this->_M_impl._M_finish;
 100           }
 101         else
 102           _M_emplace_back_aux(std::forward<_Args>(__args)...);
 103       }
 104 #endif
 105
 106   template<typename _Tp, typename _Alloc>
 107     typename vector<_Tp, _Alloc>::iterator
 108     vector<_Tp, _Alloc>::
 109     insert(iterator __position, const value_type& __x)
 110     {
 111       const size_type __n = __position - begin();
 112       if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage
 113           && __position == end())
 114         {
 115           _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish, __x);
 116           ++this->_M_impl._M_finish;
 117         }
 118       else
 119         {
 120 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 121           if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
 122             {
 123               _Tp __x_copy = __x;
 124               _M_insert_aux(__position, std::move(__x_copy));
 125             }
 126           else
 127 #endif
 128             _M_insert_aux(__position, __x);
 129         }
 130       return iterator(this->_M_impl._M_start + __n);
 131     }
 132
 133   template<typename _Tp, typename _Alloc>
 134     typename vector<_Tp, _Alloc>::iterator
 135     vector<_Tp, _Alloc>::
 136     erase(iterator __position)
 137     {
 138       if (__position + 1 != end())
 139         _GLIBCXX_MOVE3(__position + 1, end(), __position);
 140       --this->_M_impl._M_finish;
 141       _Alloc_traits::destroy(this->_M_impl, this->_M_impl._M_finish);
 142       return __position;
 143     }
 144
 145   template<typename _Tp, typename _Alloc>
 146     typename vector<_Tp, _Alloc>::iterator
 147     vector<_Tp, _Alloc>::
 148     erase(iterator __first, iterator __last)
 149     {
 150       if (__first != __last)
 151         {
 152           if (__last != end())
 153             _GLIBCXX_MOVE3(__last, end(), __first);
 154           _M_erase_at_end(__first.base() + (end() - __last));
 155         }
 156       return __first;
 157     }
 158
 159   template<typename _Tp, typename _Alloc>
 160     vector<_Tp, _Alloc>&
 161     vector<_Tp, _Alloc>::
 162     operator=(const vector<_Tp, _Alloc>& __x)
 163     {
 164       if (&__x != this)
 165         {
 166 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 167           if (_Alloc_traits::_S_propagate_on_copy_assign())
 168             {
 169               if (!_Alloc_traits::_S_always_equal()
 170                   && _M_get_Tp_allocator() != __x._M_get_Tp_allocator())
 171                 {
 172                   // replacement allocator cannot free existing storage
 173                   this->clear();
 174                   _M_deallocate(this->_M_impl._M_start,
 175                                 this->_M_impl._M_end_of_storage
 176                                 - this->_M_impl._M_start);
 177                 }
 178               std::__alloc_on_copy(_M_get_Tp_allocator(),
 179                                    __x._M_get_Tp_allocator());
 180             }
 181 #endif
 182           const size_type __xlen = __x.size();
 183           if (__xlen > capacity())
 184             {
 185               pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
 186                                                    __x.end());
 187               std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 188                             _M_get_Tp_allocator());
 189               _M_deallocate(this->_M_impl._M_start,
 190                             this->_M_impl._M_end_of_storage
 191                             - this->_M_impl._M_start);
 192               this->_M_impl._M_start = __tmp;
 193               this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
 194             }
 195           else if (size() >= __xlen)
 196             {
 197               std::_Destroy(std::copy(__x.begin(), __x.end(), begin()),
 198                             end(), _M_get_Tp_allocator());
 199             }
 200           else
 201             {
 202               std::copy(__x._M_impl._M_start, __x._M_impl._M_start + size(),
 203                         this->_M_impl._M_start);
 204               std::__uninitialized_copy_a(__x._M_impl._M_start + size(),
 205                                           __x._M_impl._M_finish,
 206                                           this->_M_impl._M_finish,
 207                                           _M_get_Tp_allocator());
 208             }
 209           this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
 210         }
 211       return *this;
 212     }
 213
 214   template<typename _Tp, typename _Alloc>
 215     void
 216     vector<_Tp, _Alloc>::
 217     _M_fill_assign(size_t __n, const value_type& __val)
 218     {
 219       if (__n > capacity())
 220         {
 221           vector __tmp(__n, __val, _M_get_Tp_allocator());
 222           __tmp.swap(*this);
 223         }
 224       else if (__n > size())
 225         {
 226           std::fill(begin(), end(), __val);
 227           std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
 228                                         __n - size(), __val,
 229                                         _M_get_Tp_allocator());
 230           this->_M_impl._M_finish += __n - size();
 231         }
 232       else
 233         _M_erase_at_end(std::fill_n(this->_M_impl._M_start, __n, __val));
 234     }
 235
 236   template<typename _Tp, typename _Alloc>
 237     template<typename _InputIterator>
 238       void
 239       vector<_Tp, _Alloc>::
 240       _M_assign_aux(_InputIterator __first, _InputIterator __last,
 241                     std::input_iterator_tag)
 242       {
 243         pointer __cur(this->_M_impl._M_start);
 244         for (; __first != __last && __cur != this->_M_impl._M_finish;
 245              ++__cur, ++__first)
 246           *__cur = *__first;
 247         if (__first == __last)
 248           _M_erase_at_end(__cur);
 249         else
 250           insert(end(), __first, __last);
 251       }
 252
 253   template<typename _Tp, typename _Alloc>
 254     template<typename _ForwardIterator>
 255       void
 256       vector<_Tp, _Alloc>::
 257       _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
 258                     std::forward_iterator_tag)
 259       {
 260         const size_type __len = std::distance(__first, __last);
 261
 262         if (__len > capacity())
 263           {
 264             pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
 265             std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 266                           _M_get_Tp_allocator());
 267             _M_deallocate(this->_M_impl._M_start,
 268                           this->_M_impl._M_end_of_storage
 269                           - this->_M_impl._M_start);
 270             this->_M_impl._M_start = __tmp;
 271             this->_M_impl._M_finish = this->_M_impl._M_start + __len;
 272             this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
 273           }
 274         else if (size() >= __len)
 275           _M_erase_at_end(std::copy(__first, __last, this->_M_impl._M_start));
 276         else
 277           {
 278             _ForwardIterator __mid = __first;
 279             std::advance(__mid, size());
 280             std::copy(__first, __mid, this->_M_impl._M_start);
 281             this->_M_impl._M_finish =
 282               std::__uninitialized_copy_a(__mid, __last,
 283                                           this->_M_impl._M_finish,
 284                                           _M_get_Tp_allocator());
 285           }
 286       }
 287
 288 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 289   template<typename _Tp, typename _Alloc>
 290     template<typename... _Args>
 291       typename vector<_Tp, _Alloc>::iterator
 292       vector<_Tp, _Alloc>::
 293       emplace(iterator __position, _Args&&... __args)
 294       {
 295         const size_type __n = __position - begin();
 296         if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage
 297             && __position == end())
 298           {
 299             _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
 300                                      std::forward<_Args>(__args)...);
 301             ++this->_M_impl._M_finish;
 302           }
 303         else
 304           _M_insert_aux(__position, std::forward<_Args>(__args)...);
 305         return iterator(this->_M_impl._M_start + __n);
 306       }
 307
 308   template<typename _Tp, typename _Alloc>
 309     template<typename... _Args>
 310       void
 311       vector<_Tp, _Alloc>::
 312       _M_insert_aux(iterator __position, _Args&&... __args)
 313 #else
 314   template<typename _Tp, typename _Alloc>
 315     void
 316     vector<_Tp, _Alloc>::
 317     _M_insert_aux(iterator __position, const _Tp& __x)
 318 #endif
 319     {
 320       if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
 321         {
 322           _Alloc_traits::construct(this->_M_impl, this->_M_impl._M_finish,
 323                                    _GLIBCXX_MOVE(*(this->_M_impl._M_finish
 324                                                    - 1)));
 325           ++this->_M_impl._M_finish;
 326 #ifndef __GXX_EXPERIMENTAL_CXX0X__
 327           _Tp __x_copy = __x;
 328 #endif
 329           _GLIBCXX_MOVE_BACKWARD3(__position.base(),
 330                                   this->_M_impl._M_finish - 2,
 331                                   this->_M_impl._M_finish - 1);
 332 #ifndef __GXX_EXPERIMENTAL_CXX0X__
 333           *__position = __x_copy;
 334 #else
 335           *__position = _Tp(std::forward<_Args>(__args)...);
 336 #endif
 337         }
 338       else
 339         {
 340           const size_type __len =
 341             _M_check_len(size_type(1), "vector::_M_insert_aux");
 342           const size_type __elems_before = __position - begin();
 343           pointer __new_start(this->_M_allocate(__len));
 344           pointer __new_finish(__new_start);
 345           __try
 346             {
 347               // The order of the three operations is dictated by the C++0x
 348               // case, where the moves could alter a new element belonging
 349               // to the existing vector.  This is an issue only for callers
 350               // taking the element by const lvalue ref (see 23.1/13).
 351               _Alloc_traits::construct(this->_M_impl,
 352                                        __new_start + __elems_before,
 353 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 354                                        std::forward<_Args>(__args)...);
 355 #else
 356                                        __x);
 357 #endif
 358               __new_finish = 0;
 359
 360               __new_finish
 361                 = std::__uninitialized_move_if_noexcept_a
 362                 (this->_M_impl._M_start, __position.base(),
 363                  __new_start, _M_get_Tp_allocator());
 364
 365               ++__new_finish;
 366
 367               __new_finish
 368                 = std::__uninitialized_move_if_noexcept_a
 369                 (__position.base(), this->_M_impl._M_finish,
 370                  __new_finish, _M_get_Tp_allocator());
 371             }
 372           __catch(...)
 373             {
 374               if (!__new_finish)
 375                 _Alloc_traits::destroy(this->_M_impl,
 376                                        __new_start + __elems_before);
 377               else
 378                 std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
 379               _M_deallocate(__new_start, __len);
 380               __throw_exception_again;
 381             }
 382           std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 383                         _M_get_Tp_allocator());
 384           _M_deallocate(this->_M_impl._M_start,
 385                         this->_M_impl._M_end_of_storage
 386                         - this->_M_impl._M_start);
 387           this->_M_impl._M_start = __new_start;
 388           this->_M_impl._M_finish = __new_finish;
 389           this->_M_impl._M_end_of_storage = __new_start + __len;
 390         }
 391     }
 392
 393 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 394   template<typename _Tp, typename _Alloc>
 395     template<typename... _Args>
 396       void
 397       vector<_Tp, _Alloc>::
 398       _M_emplace_back_aux(_Args&&... __args)
 399       {
 400         const size_type __len =
 401           _M_check_len(size_type(1), "vector::_M_emplace_back_aux");
 402         pointer __new_start(this->_M_allocate(__len));
 403         pointer __new_finish(__new_start);
 404         __try
 405           {
 406             _Alloc_traits::construct(this->_M_impl, __new_start + size(),
 407                                      std::forward<_Args>(__args)...);
 408             __new_finish = 0;
 409
 410             __new_finish
 411               = std::__uninitialized_move_if_noexcept_a
 412               (this->_M_impl._M_start, this->_M_impl._M_finish,
 413                __new_start, _M_get_Tp_allocator());
 414
 415             ++__new_finish;
 416           }
 417         __catch(...)
 418           {
 419             if (!__new_finish)
 420               _Alloc_traits::destroy(this->_M_impl, __new_start + size());
 421             else
 422               std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
 423             _M_deallocate(__new_start, __len);
 424             __throw_exception_again;
 425           }
 426         std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 427                       _M_get_Tp_allocator());
 428         _M_deallocate(this->_M_impl._M_start,
 429                       this->_M_impl._M_end_of_storage
 430                       - this->_M_impl._M_start);
 431         this->_M_impl._M_start = __new_start;
 432         this->_M_impl._M_finish = __new_finish;
 433         this->_M_impl._M_end_of_storage = __new_start + __len;
 434       }
 435 #endif
 436
 437   template<typename _Tp, typename _Alloc>
 438     void
 439     vector<_Tp, _Alloc>::
 440     _M_fill_insert(iterator __position, size_type __n, const value_type& __x)
 441     {
 442       if (__n != 0)
 443         {
 444           if (size_type(this->_M_impl._M_end_of_storage
 445                         - this->_M_impl._M_finish) >= __n)
 446             {
 447               value_type __x_copy = __x;
 448               const size_type __elems_after = end() - __position;
 449               pointer __old_finish(this->_M_impl._M_finish);
 450               if (__elems_after > __n)
 451                 {
 452                   std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
 453                                               this->_M_impl._M_finish,
 454                                               this->_M_impl._M_finish,
 455                                               _M_get_Tp_allocator());
 456                   this->_M_impl._M_finish += __n;
 457                   _GLIBCXX_MOVE_BACKWARD3(__position.base(),
 458                                           __old_finish - __n, __old_finish);
 459                   std::fill(__position.base(), __position.base() + __n,
 460                             __x_copy);
 461                 }
 462               else
 463                 {
 464                   std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
 465                                                 __n - __elems_after,
 466                                                 __x_copy,
 467                                                 _M_get_Tp_allocator());
 468                   this->_M_impl._M_finish += __n - __elems_after;
 469                   std::__uninitialized_move_a(__position.base(), __old_finish,
 470                                               this->_M_impl._M_finish,
 471                                               _M_get_Tp_allocator());
 472                   this->_M_impl._M_finish += __elems_after;
 473                   std::fill(__position.base(), __old_finish, __x_copy);
 474                 }
 475             }
 476           else
 477             {
 478               const size_type __len =
 479                 _M_check_len(__n, "vector::_M_fill_insert");
 480               const size_type __elems_before = __position - begin();
 481               pointer __new_start(this->_M_allocate(__len));
 482               pointer __new_finish(__new_start);
 483               __try
 484                 {
 485                   // See _M_insert_aux above.
 486                   std::__uninitialized_fill_n_a(__new_start + __elems_before,
 487                                                 __n, __x,
 488                                                 _M_get_Tp_allocator());
 489                   __new_finish = 0;
 490
 491                   __new_finish
 492                     = std::__uninitialized_move_if_noexcept_a
 493                     (this->_M_impl._M_start, __position.base(),
 494                      __new_start, _M_get_Tp_allocator());
 495
 496                   __new_finish += __n;
 497
 498                   __new_finish
 499                     = std::__uninitialized_move_if_noexcept_a
 500                     (__position.base(), this->_M_impl._M_finish,
 501                      __new_finish, _M_get_Tp_allocator());
 502                 }
 503               __catch(...)
 504                 {
 505                   if (!__new_finish)
 506                     std::_Destroy(__new_start + __elems_before,
 507                                   __new_start + __elems_before + __n,
 508                                   _M_get_Tp_allocator());
 509                   else
 510                     std::_Destroy(__new_start, __new_finish,
 511                                   _M_get_Tp_allocator());
 512                   _M_deallocate(__new_start, __len);
 513                   __throw_exception_again;
 514                 }
 515               std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 516                             _M_get_Tp_allocator());
 517               _M_deallocate(this->_M_impl._M_start,
 518                             this->_M_impl._M_end_of_storage
 519                             - this->_M_impl._M_start);
 520               this->_M_impl._M_start = __new_start;
 521               this->_M_impl._M_finish = __new_finish;
 522               this->_M_impl._M_end_of_storage = __new_start + __len;
 523             }
 524         }
 525     }
 526
 527 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 528   template<typename _Tp, typename _Alloc>
 529     void
 530     vector<_Tp, _Alloc>::
 531     _M_default_append(size_type __n)
 532     {
 533       if (__n != 0)
 534         {
 535           if (size_type(this->_M_impl._M_end_of_storage
 536                         - this->_M_impl._M_finish) >= __n)
 537             {
 538               std::__uninitialized_default_n_a(this->_M_impl._M_finish,
 539                                                __n, _M_get_Tp_allocator());
 540               this->_M_impl._M_finish += __n;
 541             }
 542           else
 543             {
 544               const size_type __len =
 545                 _M_check_len(__n, "vector::_M_default_append");
 546               const size_type __old_size = this->size();
 547               pointer __new_start(this->_M_allocate(__len));
 548               pointer __new_finish(__new_start);
 549               __try
 550                 {
 551                   __new_finish
 552                     = std::__uninitialized_move_if_noexcept_a
 553                     (this->_M_impl._M_start, this->_M_impl._M_finish,
 554                      __new_start, _M_get_Tp_allocator());
 555                   std::__uninitialized_default_n_a(__new_finish, __n,
 556                                                    _M_get_Tp_allocator());
 557                   __new_finish += __n;
 558                 }
 559               __catch(...)
 560                 {
 561                   std::_Destroy(__new_start, __new_finish,
 562                                 _M_get_Tp_allocator());
 563                   _M_deallocate(__new_start, __len);
 564                   __throw_exception_again;
 565                 }
 566               std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 567                             _M_get_Tp_allocator());
 568               _M_deallocate(this->_M_impl._M_start,
 569                             this->_M_impl._M_end_of_storage
 570                             - this->_M_impl._M_start);
 571               this->_M_impl._M_start = __new_start;
 572               this->_M_impl._M_finish = __new_finish;
 573               this->_M_impl._M_end_of_storage = __new_start + __len;
 574             }
 575         }
 576     }
 577
 578   template<typename _Tp, typename _Alloc>
 579     bool
 580     vector<_Tp, _Alloc>::
 581     _M_shrink_to_fit()
 582     {
 583       if (capacity() == size())
 584         return false;
 585       return std::__shrink_to_fit_aux<vector>::_S_do_it(*this);
 586     }
 587 #endif
 588
 589   template<typename _Tp, typename _Alloc>
 590     template<typename _InputIterator>
 591       void
 592       vector<_Tp, _Alloc>::
 593       _M_range_insert(iterator __pos, _InputIterator __first,
 594                       _InputIterator __last, std::input_iterator_tag)
 595       {
 596         for (; __first != __last; ++__first)
 597           {
 598             __pos = insert(__pos, *__first);
 599             ++__pos;
 600           }
 601       }
 602
 603   template<typename _Tp, typename _Alloc>
 604     template<typename _ForwardIterator>
 605       void
 606       vector<_Tp, _Alloc>::
 607       _M_range_insert(iterator __position, _ForwardIterator __first,
 608                       _ForwardIterator __last, std::forward_iterator_tag)
 609       {
 610         if (__first != __last)
 611           {
 612             const size_type __n = std::distance(__first, __last);
 613             if (size_type(this->_M_impl._M_end_of_storage
 614                           - this->_M_impl._M_finish) >= __n)
 615               {
 616                 const size_type __elems_after = end() - __position;
 617                 pointer __old_finish(this->_M_impl._M_finish);
 618                 if (__elems_after > __n)
 619                   {
 620                     std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
 621                                                 this->_M_impl._M_finish,
 622                                                 this->_M_impl._M_finish,
 623                                                 _M_get_Tp_allocator());
 624                     this->_M_impl._M_finish += __n;
 625                     _GLIBCXX_MOVE_BACKWARD3(__position.base(),
 626                                             __old_finish - __n, __old_finish);
 627                     std::copy(__first, __last, __position);
 628                   }
 629                 else
 630                   {
 631                     _ForwardIterator __mid = __first;
 632                     std::advance(__mid, __elems_after);
 633                     std::__uninitialized_copy_a(__mid, __last,
 634                                                 this->_M_impl._M_finish,
 635                                                 _M_get_Tp_allocator());
 636                     this->_M_impl._M_finish += __n - __elems_after;
 637                     std::__uninitialized_move_a(__position.base(),
 638                                                 __old_finish,
 639                                                 this->_M_impl._M_finish,
 640                                                 _M_get_Tp_allocator());
 641                     this->_M_impl._M_finish += __elems_after;
 642                     std::copy(__first, __mid, __position);
 643                   }
 644               }
 645             else
 646               {
 647                 const size_type __len =
 648                   _M_check_len(__n, "vector::_M_range_insert");
 649                 pointer __new_start(this->_M_allocate(__len));
 650                 pointer __new_finish(__new_start);
 651                 __try
 652                   {
 653                     __new_finish
 654                       = std::__uninitialized_move_if_noexcept_a
 655                       (this->_M_impl._M_start, __position.base(),
 656                        __new_start, _M_get_Tp_allocator());
 657                     __new_finish
 658                       = std::__uninitialized_copy_a(__first, __last,
 659                                                     __new_finish,
 660                                                     _M_get_Tp_allocator());
 661                     __new_finish
 662                       = std::__uninitialized_move_if_noexcept_a
 663                       (__position.base(), this->_M_impl._M_finish,
 664                        __new_finish, _M_get_Tp_allocator());
 665                   }
 666                 __catch(...)
 667                   {
 668                     std::_Destroy(__new_start, __new_finish,
 669                                   _M_get_Tp_allocator());
 670                     _M_deallocate(__new_start, __len);
 671                     __throw_exception_again;
 672                   }
 673                 std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 674                               _M_get_Tp_allocator());
 675                 _M_deallocate(this->_M_impl._M_start,
 676                               this->_M_impl._M_end_of_storage
 677                               - this->_M_impl._M_start);
 678                 this->_M_impl._M_start = __new_start;
 679                 this->_M_impl._M_finish = __new_finish;
 680                 this->_M_impl._M_end_of_storage = __new_start + __len;
 681               }
 682           }
 683       }
 684
 685
 686   // vector<bool>
 687   template<typename _Alloc>
 688     void
 689     vector<bool, _Alloc>::
 690     _M_reallocate(size_type __n)
 691     {
 692       _Bit_type* __q = this->_M_allocate(__n);
 693       this->_M_impl._M_finish = _M_copy_aligned(begin(), end(),
 694                                                 iterator(__q, 0));
 695       this->_M_deallocate();
 696       this->_M_impl._M_start = iterator(__q, 0);
 697       this->_M_impl._M_end_of_storage = __q + _S_nword(__n);
 698     }
 699
 700   template<typename _Alloc>
 701     void
 702     vector<bool, _Alloc>::
 703     _M_fill_insert(iterator __position, size_type __n, bool __x)
 704     {
 705       if (__n == 0)
 706         return;
 707       if (capacity() - size() >= __n)
 708         {
 709           std::copy_backward(__position, end(),
 710                              this->_M_impl._M_finish + difference_type(__n));
 711           std::fill(__position, __position + difference_type(__n), __x);
 712           this->_M_impl._M_finish += difference_type(__n);
 713         }
 714       else
 715         {
 716           const size_type __len =
 717             _M_check_len(__n, "vector<bool>::_M_fill_insert");
 718           _Bit_type * __q = this->_M_allocate(__len);
 719           iterator __i = _M_copy_aligned(begin(), __position,
 720                                          iterator(__q, 0));
 721           std::fill(__i, __i + difference_type(__n), __x);
 722           this->_M_impl._M_finish = std::copy(__position, end(),
 723                                               __i + difference_type(__n));
 724           this->_M_deallocate();
 725           this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
 726           this->_M_impl._M_start = iterator(__q, 0);
 727         }
 728     }
 729
 730   template<typename _Alloc>
 731     template<typename _ForwardIterator>
 732       void
 733       vector<bool, _Alloc>::
 734       _M_insert_range(iterator __position, _ForwardIterator __first,
 735                       _ForwardIterator __last, std::forward_iterator_tag)
 736       {
 737         if (__first != __last)
 738           {
 739             size_type __n = std::distance(__first, __last);
 740             if (capacity() - size() >= __n)
 741               {
 742                 std::copy_backward(__position, end(),
 743                                    this->_M_impl._M_finish
 744                                    + difference_type(__n));
 745                 std::copy(__first, __last, __position);
 746                 this->_M_impl._M_finish += difference_type(__n);
 747               }
 748             else
 749               {
 750                 const size_type __len =
 751                   _M_check_len(__n, "vector<bool>::_M_insert_range");
 752                 _Bit_type * __q = this->_M_allocate(__len);
 753                 iterator __i = _M_copy_aligned(begin(), __position,
 754                                                iterator(__q, 0));
 755                 __i = std::copy(__first, __last, __i);
 756                 this->_M_impl._M_finish = std::copy(__position, end(), __i);
 757                 this->_M_deallocate();
 758                 this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
 759                 this->_M_impl._M_start = iterator(__q, 0);
 760               }
 761           }
 762       }
 763
 764   template<typename _Alloc>
 765     void
 766     vector<bool, _Alloc>::
 767     _M_insert_aux(iterator __position, bool __x)
 768     {
 769       if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_of_storage)
 770         {
 771           std::copy_backward(__position, this->_M_impl._M_finish,
 772                              this->_M_impl._M_finish + 1);
 773           *__position = __x;
 774           ++this->_M_impl._M_finish;
 775         }
 776       else
 777         {
 778           const size_type __len =
 779             _M_check_len(size_type(1), "vector<bool>::_M_insert_aux");
 780           _Bit_type * __q = this->_M_allocate(__len);
 781           iterator __i = _M_copy_aligned(begin(), __position,
 782                                          iterator(__q, 0));
 783           *__i++ = __x;
 784           this->_M_impl._M_finish = std::copy(__position, end(), __i);
 785           this->_M_deallocate();
 786           this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
 787           this->_M_impl._M_start = iterator(__q, 0);
 788         }
 789     }
 790
 791 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 792   template<typename _Alloc>
 793     bool
 794     vector<bool, _Alloc>::
 795     _M_shrink_to_fit()
 796     {
 797       if (capacity() - size() < int(_S_word_bit))
 798         return false;
 799       __try
 800         {
 801           _M_reallocate(size());
 802           return true;
 803         }
 804       __catch(...)
 805         { return false; }
 806     }
 807 #endif
 808
 809 _GLIBCXX_END_NAMESPACE_CONTAINER
 810 } // namespace std
 811
 812 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 813
 814 namespace std _GLIBCXX_VISIBILITY(default)
 815 {
 816 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 817
 818   template<typename _Alloc>
 819     size_t
 820     hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>::
 821     operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>& __b) const noexcept
 822     {
 823       size_t __hash = 0;
 824       using _GLIBCXX_STD_C::_S_word_bit;
 825       using _GLIBCXX_STD_C::_Bit_type;
 826
 827       const size_t __words = __b.size() / _S_word_bit;
 828       if (__words)
 829         {
 830           const size_t __clength = __words * sizeof(_Bit_type);
 831           __hash = std::_Hash_impl::hash(__b._M_impl._M_start._M_p, __clength);
 832         }
 833
 834       const size_t __extrabits = __b.size() % _S_word_bit;
 835       if (__extrabits)
 836         {
 837           _Bit_type __hiword = *__b._M_impl._M_finish._M_p;
 838           __hiword &= ~((~static_cast<_Bit_type>(0)) << __extrabits);
 839
 840           const size_t __clength
 841             = (__extrabits + __CHAR_BIT__ - 1) / __CHAR_BIT__;
 842           if (__words)
 843             __hash = std::_Hash_impl::hash(&__hiword, __clength, __hash);
 844           else
 845             __hash = std::_Hash_impl::hash(&__hiword, __clength);
 846         }
 847
 848       return __hash;
 849     }
 850
 851 _GLIBCXX_END_NAMESPACE_VERSION
 852 } // namespace std
 853
 854 #endif // __GXX_EXPERIMENTAL_CXX0X__
 855
 856 #endif /* _VECTOR_TCC */