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             this->_M_impl.construct(this->_M_impl._M_finish,
  98                                     std::forward<_Args>(__args)...);
  99             ++this->_M_impl._M_finish;
 100           }
 101         else
 102           _M_insert_aux(end(), 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           this->_M_impl.construct(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       this->_M_impl.destroy(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 (__last != end())
 151         _GLIBCXX_MOVE3(__last, end(), __first);
 152       _M_erase_at_end(__first.base() + (end() - __last));
 153       return __first;
 154     }
 155
 156   template<typename _Tp, typename _Alloc>
 157     vector<_Tp, _Alloc>&
 158     vector<_Tp, _Alloc>::
 159     operator=(const vector<_Tp, _Alloc>& __x)
 160     {
 161       if (&__x != this)
 162         {
 163           const size_type __xlen = __x.size();
 164           if (__xlen > capacity())
 165             {
 166               pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
 167                                                    __x.end());
 168               std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 169                             _M_get_Tp_allocator());
 170               _M_deallocate(this->_M_impl._M_start,
 171                             this->_M_impl._M_end_of_storage
 172                             - this->_M_impl._M_start);
 173               this->_M_impl._M_start = __tmp;
 174               this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
 175             }
 176           else if (size() >= __xlen)
 177             {
 178               std::_Destroy(std::copy(__x.begin(), __x.end(), begin()),
 179                             end(), _M_get_Tp_allocator());
 180             }
 181           else
 182             {
 183               std::copy(__x._M_impl._M_start, __x._M_impl._M_start + size(),
 184                         this->_M_impl._M_start);
 185               std::__uninitialized_copy_a(__x._M_impl._M_start + size(),
 186                                           __x._M_impl._M_finish,
 187                                           this->_M_impl._M_finish,
 188                                           _M_get_Tp_allocator());
 189             }
 190           this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
 191         }
 192       return *this;
 193     }
 194
 195   template<typename _Tp, typename _Alloc>
 196     void
 197     vector<_Tp, _Alloc>::
 198     _M_fill_assign(size_t __n, const value_type& __val)
 199     {
 200       if (__n > capacity())
 201         {
 202           vector __tmp(__n, __val, _M_get_Tp_allocator());
 203           __tmp.swap(*this);
 204         }
 205       else if (__n > size())
 206         {
 207           std::fill(begin(), end(), __val);
 208           std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
 209                                         __n - size(), __val,
 210                                         _M_get_Tp_allocator());
 211           this->_M_impl._M_finish += __n - size();
 212         }
 213       else
 214         _M_erase_at_end(std::fill_n(this->_M_impl._M_start, __n, __val));
 215     }
 216
 217   template<typename _Tp, typename _Alloc>
 218     template<typename _InputIterator>
 219       void
 220       vector<_Tp, _Alloc>::
 221       _M_assign_aux(_InputIterator __first, _InputIterator __last,
 222                     std::input_iterator_tag)
 223       {
 224         pointer __cur(this->_M_impl._M_start);
 225         for (; __first != __last && __cur != this->_M_impl._M_finish;
 226              ++__cur, ++__first)
 227           *__cur = *__first;
 228         if (__first == __last)
 229           _M_erase_at_end(__cur);
 230         else
 231           insert(end(), __first, __last);
 232       }
 233
 234   template<typename _Tp, typename _Alloc>
 235     template<typename _ForwardIterator>
 236       void
 237       vector<_Tp, _Alloc>::
 238       _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
 239                     std::forward_iterator_tag)
 240       {
 241         const size_type __len = std::distance(__first, __last);
 242
 243         if (__len > capacity())
 244           {
 245             pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
 246             std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 247                           _M_get_Tp_allocator());
 248             _M_deallocate(this->_M_impl._M_start,
 249                           this->_M_impl._M_end_of_storage
 250                           - this->_M_impl._M_start);
 251             this->_M_impl._M_start = __tmp;
 252             this->_M_impl._M_finish = this->_M_impl._M_start + __len;
 253             this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
 254           }
 255         else if (size() >= __len)
 256           _M_erase_at_end(std::copy(__first, __last, this->_M_impl._M_start));
 257         else
 258           {
 259             _ForwardIterator __mid = __first;
 260             std::advance(__mid, size());
 261             std::copy(__first, __mid, this->_M_impl._M_start);
 262             this->_M_impl._M_finish =
 263               std::__uninitialized_copy_a(__mid, __last,
 264                                           this->_M_impl._M_finish,
 265                                           _M_get_Tp_allocator());
 266           }
 267       }
 268
 269 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 270   template<typename _Tp, typename _Alloc>
 271     template<typename... _Args>
 272       typename vector<_Tp, _Alloc>::iterator
 273       vector<_Tp, _Alloc>::
 274       emplace(iterator __position, _Args&&... __args)
 275       {
 276         const size_type __n = __position - begin();
 277         if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage
 278             && __position == end())
 279           {
 280             this->_M_impl.construct(this->_M_impl._M_finish,
 281                                     std::forward<_Args>(__args)...);
 282             ++this->_M_impl._M_finish;
 283           }
 284         else
 285           _M_insert_aux(__position, std::forward<_Args>(__args)...);
 286         return iterator(this->_M_impl._M_start + __n);
 287       }
 288
 289   template<typename _Tp, typename _Alloc>
 290     template<typename... _Args>
 291       void
 292       vector<_Tp, _Alloc>::
 293       _M_insert_aux(iterator __position, _Args&&... __args)
 294 #else
 295   template<typename _Tp, typename _Alloc>
 296     void
 297     vector<_Tp, _Alloc>::
 298     _M_insert_aux(iterator __position, const _Tp& __x)
 299 #endif
 300     {
 301       if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage)
 302         {
 303           this->_M_impl.construct(this->_M_impl._M_finish,
 304                                   _GLIBCXX_MOVE(*(this->_M_impl._M_finish
 305                                                   - 1)));
 306           ++this->_M_impl._M_finish;
 307 #ifndef __GXX_EXPERIMENTAL_CXX0X__
 308           _Tp __x_copy = __x;
 309 #endif
 310           _GLIBCXX_MOVE_BACKWARD3(__position.base(),
 311                                   this->_M_impl._M_finish - 2,
 312                                   this->_M_impl._M_finish - 1);
 313 #ifndef __GXX_EXPERIMENTAL_CXX0X__
 314           *__position = __x_copy;
 315 #else
 316           *__position = _Tp(std::forward<_Args>(__args)...);
 317 #endif
 318         }
 319       else
 320         {
 321           const size_type __len =
 322             _M_check_len(size_type(1), "vector::_M_insert_aux");
 323           const size_type __elems_before = __position - begin();
 324           pointer __new_start(this->_M_allocate(__len));
 325           pointer __new_finish(__new_start);
 326           __try
 327             {
 328               // The order of the three operations is dictated by the C++0x
 329               // case, where the moves could alter a new element belonging
 330               // to the existing vector.  This is an issue only for callers
 331               // taking the element by const lvalue ref (see 23.1/13).
 332               this->_M_impl.construct(__new_start + __elems_before,
 333 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 334                                       std::forward<_Args>(__args)...);
 335 #else
 336                                       __x);
 337 #endif
 338               __new_finish = 0;
 339
 340               __new_finish
 341                 = std::__uninitialized_move_if_noexcept_a
 342                 (this->_M_impl._M_start, __position.base(),
 343                  __new_start, _M_get_Tp_allocator());
 344
 345               ++__new_finish;
 346
 347               __new_finish
 348                 = std::__uninitialized_move_if_noexcept_a
 349                 (__position.base(), this->_M_impl._M_finish,
 350                  __new_finish, _M_get_Tp_allocator());
 351             }
 352           __catch(...)
 353             {
 354               if (!__new_finish)
 355                 this->_M_impl.destroy(__new_start + __elems_before);
 356               else
 357                 std::_Destroy(__new_start, __new_finish, _M_get_Tp_allocator());
 358               _M_deallocate(__new_start, __len);
 359               __throw_exception_again;
 360             }
 361           std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 362                         _M_get_Tp_allocator());
 363           _M_deallocate(this->_M_impl._M_start,
 364                         this->_M_impl._M_end_of_storage
 365                         - this->_M_impl._M_start);
 366           this->_M_impl._M_start = __new_start;
 367           this->_M_impl._M_finish = __new_finish;
 368           this->_M_impl._M_end_of_storage = __new_start + __len;
 369         }
 370     }
 371
 372   template<typename _Tp, typename _Alloc>
 373     void
 374     vector<_Tp, _Alloc>::
 375     _M_fill_insert(iterator __position, size_type __n, const value_type& __x)
 376     {
 377       if (__n != 0)
 378         {
 379           if (size_type(this->_M_impl._M_end_of_storage
 380                         - this->_M_impl._M_finish) >= __n)
 381             {
 382               value_type __x_copy = __x;
 383               const size_type __elems_after = end() - __position;
 384               pointer __old_finish(this->_M_impl._M_finish);
 385               if (__elems_after > __n)
 386                 {
 387                   std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
 388                                               this->_M_impl._M_finish,
 389                                               this->_M_impl._M_finish,
 390                                               _M_get_Tp_allocator());
 391                   this->_M_impl._M_finish += __n;
 392                   _GLIBCXX_MOVE_BACKWARD3(__position.base(),
 393                                           __old_finish - __n, __old_finish);
 394                   std::fill(__position.base(), __position.base() + __n,
 395                             __x_copy);
 396                 }
 397               else
 398                 {
 399                   std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
 400                                                 __n - __elems_after,
 401                                                 __x_copy,
 402                                                 _M_get_Tp_allocator());
 403                   this->_M_impl._M_finish += __n - __elems_after;
 404                   std::__uninitialized_move_a(__position.base(), __old_finish,
 405                                               this->_M_impl._M_finish,
 406                                               _M_get_Tp_allocator());
 407                   this->_M_impl._M_finish += __elems_after;
 408                   std::fill(__position.base(), __old_finish, __x_copy);
 409                 }
 410             }
 411           else
 412             {
 413               const size_type __len =
 414                 _M_check_len(__n, "vector::_M_fill_insert");
 415               const size_type __elems_before = __position - begin();
 416               pointer __new_start(this->_M_allocate(__len));
 417               pointer __new_finish(__new_start);
 418               __try
 419                 {
 420                   // See _M_insert_aux above.
 421                   std::__uninitialized_fill_n_a(__new_start + __elems_before,
 422                                                 __n, __x,
 423                                                 _M_get_Tp_allocator());
 424                   __new_finish = 0;
 425
 426                   __new_finish
 427                     = std::__uninitialized_move_if_noexcept_a
 428                     (this->_M_impl._M_start, __position.base(),
 429                      __new_start, _M_get_Tp_allocator());
 430
 431                   __new_finish += __n;
 432
 433                   __new_finish
 434                     = std::__uninitialized_move_if_noexcept_a
 435                     (__position.base(), this->_M_impl._M_finish,
 436                      __new_finish, _M_get_Tp_allocator());
 437                 }
 438               __catch(...)
 439                 {
 440                   if (!__new_finish)
 441                     std::_Destroy(__new_start + __elems_before,
 442                                   __new_start + __elems_before + __n,
 443                                   _M_get_Tp_allocator());
 444                   else
 445                     std::_Destroy(__new_start, __new_finish,
 446                                   _M_get_Tp_allocator());
 447                   _M_deallocate(__new_start, __len);
 448                   __throw_exception_again;
 449                 }
 450               std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 451                             _M_get_Tp_allocator());
 452               _M_deallocate(this->_M_impl._M_start,
 453                             this->_M_impl._M_end_of_storage
 454                             - this->_M_impl._M_start);
 455               this->_M_impl._M_start = __new_start;
 456               this->_M_impl._M_finish = __new_finish;
 457               this->_M_impl._M_end_of_storage = __new_start + __len;
 458             }
 459         }
 460     }
 461
 462 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 463   template<typename _Tp, typename _Alloc>
 464     void
 465     vector<_Tp, _Alloc>::
 466     _M_default_append(size_type __n)
 467     {
 468       if (__n != 0)
 469         {
 470           if (size_type(this->_M_impl._M_end_of_storage
 471                         - this->_M_impl._M_finish) >= __n)
 472             {
 473               std::__uninitialized_default_n_a(this->_M_impl._M_finish,
 474                                                __n, _M_get_Tp_allocator());
 475               this->_M_impl._M_finish += __n;
 476             }
 477           else
 478             {
 479               const size_type __len =
 480                 _M_check_len(__n, "vector::_M_default_append");
 481               const size_type __old_size = this->size();
 482               pointer __new_start(this->_M_allocate(__len));
 483               pointer __new_finish(__new_start);
 484               __try
 485                 {
 486                   __new_finish
 487                     = std::__uninitialized_move_if_noexcept_a
 488                     (this->_M_impl._M_start, this->_M_impl._M_finish,
 489                      __new_start, _M_get_Tp_allocator());
 490                   std::__uninitialized_default_n_a(__new_finish, __n,
 491                                                    _M_get_Tp_allocator());
 492                   __new_finish += __n;
 493                 }
 494               __catch(...)
 495                 {
 496                   std::_Destroy(__new_start, __new_finish,
 497                                 _M_get_Tp_allocator());
 498                   _M_deallocate(__new_start, __len);
 499                   __throw_exception_again;
 500                 }
 501               std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 502                             _M_get_Tp_allocator());
 503               _M_deallocate(this->_M_impl._M_start,
 504                             this->_M_impl._M_end_of_storage
 505                             - this->_M_impl._M_start);
 506               this->_M_impl._M_start = __new_start;
 507               this->_M_impl._M_finish = __new_finish;
 508               this->_M_impl._M_end_of_storage = __new_start + __len;
 509             }
 510         }
 511     }
 512
 513   template<typename _Tp, typename _Alloc>
 514     bool
 515     vector<_Tp, _Alloc>::
 516     _M_shrink_to_fit()
 517     {
 518       if (capacity() == size())
 519         return false;
 520       return std::__shrink_to_fit_aux<vector>::_S_do_it(*this);
 521     }
 522 #endif
 523
 524   template<typename _Tp, typename _Alloc>
 525     template<typename _InputIterator>
 526       void
 527       vector<_Tp, _Alloc>::
 528       _M_range_insert(iterator __pos, _InputIterator __first,
 529                       _InputIterator __last, std::input_iterator_tag)
 530       {
 531         for (; __first != __last; ++__first)
 532           {
 533             __pos = insert(__pos, *__first);
 534             ++__pos;
 535           }
 536       }
 537
 538   template<typename _Tp, typename _Alloc>
 539     template<typename _ForwardIterator>
 540       void
 541       vector<_Tp, _Alloc>::
 542       _M_range_insert(iterator __position, _ForwardIterator __first,
 543                       _ForwardIterator __last, std::forward_iterator_tag)
 544       {
 545         if (__first != __last)
 546           {
 547             const size_type __n = std::distance(__first, __last);
 548             if (size_type(this->_M_impl._M_end_of_storage
 549                           - this->_M_impl._M_finish) >= __n)
 550               {
 551                 const size_type __elems_after = end() - __position;
 552                 pointer __old_finish(this->_M_impl._M_finish);
 553                 if (__elems_after > __n)
 554                   {
 555                     std::__uninitialized_move_a(this->_M_impl._M_finish - __n,
 556                                                 this->_M_impl._M_finish,
 557                                                 this->_M_impl._M_finish,
 558                                                 _M_get_Tp_allocator());
 559                     this->_M_impl._M_finish += __n;
 560                     _GLIBCXX_MOVE_BACKWARD3(__position.base(),
 561                                             __old_finish - __n, __old_finish);
 562                     std::copy(__first, __last, __position);
 563                   }
 564                 else
 565                   {
 566                     _ForwardIterator __mid = __first;
 567                     std::advance(__mid, __elems_after);
 568                     std::__uninitialized_copy_a(__mid, __last,
 569                                                 this->_M_impl._M_finish,
 570                                                 _M_get_Tp_allocator());
 571                     this->_M_impl._M_finish += __n - __elems_after;
 572                     std::__uninitialized_move_a(__position.base(),
 573                                                 __old_finish,
 574                                                 this->_M_impl._M_finish,
 575                                                 _M_get_Tp_allocator());
 576                     this->_M_impl._M_finish += __elems_after;
 577                     std::copy(__first, __mid, __position);
 578                   }
 579               }
 580             else
 581               {
 582                 const size_type __len =
 583                   _M_check_len(__n, "vector::_M_range_insert");
 584                 pointer __new_start(this->_M_allocate(__len));
 585                 pointer __new_finish(__new_start);
 586                 __try
 587                   {
 588                     __new_finish
 589                       = std::__uninitialized_move_if_noexcept_a
 590                       (this->_M_impl._M_start, __position.base(),
 591                        __new_start, _M_get_Tp_allocator());
 592                     __new_finish
 593                       = std::__uninitialized_copy_a(__first, __last,
 594                                                     __new_finish,
 595                                                     _M_get_Tp_allocator());
 596                     __new_finish
 597                       = std::__uninitialized_move_if_noexcept_a
 598                       (__position.base(), this->_M_impl._M_finish,
 599                        __new_finish, _M_get_Tp_allocator());
 600                   }
 601                 __catch(...)
 602                   {
 603                     std::_Destroy(__new_start, __new_finish,
 604                                   _M_get_Tp_allocator());
 605                     _M_deallocate(__new_start, __len);
 606                     __throw_exception_again;
 607                   }
 608                 std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
 609                               _M_get_Tp_allocator());
 610                 _M_deallocate(this->_M_impl._M_start,
 611                               this->_M_impl._M_end_of_storage
 612                               - this->_M_impl._M_start);
 613                 this->_M_impl._M_start = __new_start;
 614                 this->_M_impl._M_finish = __new_finish;
 615                 this->_M_impl._M_end_of_storage = __new_start + __len;
 616               }
 617           }
 618       }
 619
 620
 621   // vector<bool>
 622   template<typename _Alloc>
 623     void
 624     vector<bool, _Alloc>::
 625     _M_reallocate(size_type __n)
 626     {
 627       _Bit_type* __q = this->_M_allocate(__n);
 628       this->_M_impl._M_finish = _M_copy_aligned(begin(), end(),
 629                                                 iterator(__q, 0));
 630       this->_M_deallocate();
 631       this->_M_impl._M_start = iterator(__q, 0);
 632       this->_M_impl._M_end_of_storage = __q + _S_nword(__n);
 633     }
 634
 635   template<typename _Alloc>
 636     void
 637     vector<bool, _Alloc>::
 638     _M_fill_insert(iterator __position, size_type __n, bool __x)
 639     {
 640       if (__n == 0)
 641         return;
 642       if (capacity() - size() >= __n)
 643         {
 644           std::copy_backward(__position, end(),
 645                              this->_M_impl._M_finish + difference_type(__n));
 646           std::fill(__position, __position + difference_type(__n), __x);
 647           this->_M_impl._M_finish += difference_type(__n);
 648         }
 649       else
 650         {
 651           const size_type __len =
 652             _M_check_len(__n, "vector<bool>::_M_fill_insert");
 653           _Bit_type * __q = this->_M_allocate(__len);
 654           iterator __i = _M_copy_aligned(begin(), __position,
 655                                          iterator(__q, 0));
 656           std::fill(__i, __i + difference_type(__n), __x);
 657           this->_M_impl._M_finish = std::copy(__position, end(),
 658                                               __i + difference_type(__n));
 659           this->_M_deallocate();
 660           this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
 661           this->_M_impl._M_start = iterator(__q, 0);
 662         }
 663     }
 664
 665   template<typename _Alloc>
 666     template<typename _ForwardIterator>
 667       void
 668       vector<bool, _Alloc>::
 669       _M_insert_range(iterator __position, _ForwardIterator __first,
 670                       _ForwardIterator __last, std::forward_iterator_tag)
 671       {
 672         if (__first != __last)
 673           {
 674             size_type __n = std::distance(__first, __last);
 675             if (capacity() - size() >= __n)
 676               {
 677                 std::copy_backward(__position, end(),
 678                                    this->_M_impl._M_finish
 679                                    + difference_type(__n));
 680                 std::copy(__first, __last, __position);
 681                 this->_M_impl._M_finish += difference_type(__n);
 682               }
 683             else
 684               {
 685                 const size_type __len =
 686                   _M_check_len(__n, "vector<bool>::_M_insert_range");
 687                 _Bit_type * __q = this->_M_allocate(__len);
 688                 iterator __i = _M_copy_aligned(begin(), __position,
 689                                                iterator(__q, 0));
 690                 __i = std::copy(__first, __last, __i);
 691                 this->_M_impl._M_finish = std::copy(__position, end(), __i);
 692                 this->_M_deallocate();
 693                 this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
 694                 this->_M_impl._M_start = iterator(__q, 0);
 695               }
 696           }
 697       }
 698
 699   template<typename _Alloc>
 700     void
 701     vector<bool, _Alloc>::
 702     _M_insert_aux(iterator __position, bool __x)
 703     {
 704       if (this->_M_impl._M_finish._M_p != this->_M_impl._M_end_of_storage)
 705         {
 706           std::copy_backward(__position, this->_M_impl._M_finish,
 707                              this->_M_impl._M_finish + 1);
 708           *__position = __x;
 709           ++this->_M_impl._M_finish;
 710         }
 711       else
 712         {
 713           const size_type __len =
 714             _M_check_len(size_type(1), "vector<bool>::_M_insert_aux");
 715           _Bit_type * __q = this->_M_allocate(__len);
 716           iterator __i = _M_copy_aligned(begin(), __position,
 717                                          iterator(__q, 0));
 718           *__i++ = __x;
 719           this->_M_impl._M_finish = std::copy(__position, end(), __i);
 720           this->_M_deallocate();
 721           this->_M_impl._M_end_of_storage = __q + _S_nword(__len);
 722           this->_M_impl._M_start = iterator(__q, 0);
 723         }
 724     }
 725
 726 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 727   template<typename _Alloc>
 728     bool
 729     vector<bool, _Alloc>::
 730     _M_shrink_to_fit()
 731     {
 732       if (capacity() - size() < int(_S_word_bit))
 733         return false;
 734       __try
 735         {
 736           _M_reallocate(size());
 737           return true;
 738         }
 739       __catch(...)
 740         { return false; }
 741     }
 742 #endif
 743
 744 _GLIBCXX_END_NAMESPACE_CONTAINER
 745 } // namespace std
 746
 747 #ifdef __GXX_EXPERIMENTAL_CXX0X__
 748
 749 namespace std _GLIBCXX_VISIBILITY(default)
 750 {
 751 _GLIBCXX_BEGIN_NAMESPACE_VERSION
 752
 753   template<typename _Alloc>
 754     size_t
 755     hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>::
 756     operator()(const _GLIBCXX_STD_C::vector<bool, _Alloc>& __b) const
 757     {
 758       size_t __hash = 0;
 759       using _GLIBCXX_STD_C::_S_word_bit;
 760       using _GLIBCXX_STD_C::_Bit_type;
 761
 762       const size_t __words = __b.size() / _S_word_bit;
 763       if (__words)
 764         {
 765           const size_t __clength = __words * sizeof(_Bit_type);
 766           __hash = std::_Hash_impl::hash(__b._M_impl._M_start._M_p, __clength);
 767         }
 768
 769       const size_t __extrabits = __b.size() % _S_word_bit;
 770       if (__extrabits)
 771         {
 772           _Bit_type __hiword = *__b._M_impl._M_finish._M_p;
 773           __hiword &= ~((~static_cast<_Bit_type>(0)) << __extrabits);
 774
 775           const size_t __clength
 776             = (__extrabits + __CHAR_BIT__ - 1) / __CHAR_BIT__;
 777           if (__words)
 778             __hash = std::_Hash_impl::hash(&__hiword, __clength, __hash);
 779           else
 780             __hash = std::_Hash_impl::hash(&__hiword, __clength);
 781         }
 782
 783       return __hash;
 784     }
 785
 786 _GLIBCXX_END_NAMESPACE_VERSION
 787 } // namespace std
 788
 789 #endif // __GXX_EXPERIMENTAL_CXX0X__
 790
 791 #endif /* _VECTOR_TCC */