vector.tcc

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// Vector implementation (out of line) -*- C++ -*-

// Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library.  This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.

// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING.  If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.

// As a special exception, you may use this file as part of a free software
// library without restriction.  Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License.  This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.

/*
 *
 * Copyright (c) 1994
 * Hewlett-Packard Company
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Hewlett-Packard Company makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 *
 *
 * Copyright (c) 1996
 * Silicon Graphics Computer Systems, Inc.
 *
 * Permission to use, copy, modify, distribute and sell this software
 * and its documentation for any purpose is hereby granted without fee,
 * provided that the above copyright notice appear in all copies and
 * that both that copyright notice and this permission notice appear
 * in supporting documentation.  Silicon Graphics makes no
 * representations about the suitability of this  software for any
 * purpose.  It is provided "as is" without express or implied warranty.
 */

/** @file vector.tcc
 *  This is an internal header file, included by other library headers.
 *  You should not attempt to use it directly.
 */

#ifndef _VECTOR_TCC
#define _VECTOR_TCC 1

namespace _GLIBCXX_STD
{
  template<typename _Tp, typename _Alloc>
    void
    vector<_Tp, _Alloc>::
    reserve(size_type __n)
    {
      if (__n > this->max_size())
	__throw_length_error(__N("vector::reserve"));
      if (this->capacity() < __n)
	{
	  const size_type __old_size = size();
	  pointer __tmp = _M_allocate_and_copy(__n,
					       this->_M_impl._M_start,
					       this->_M_impl._M_finish);
	  std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
			_M_get_Tp_allocator());
	  _M_deallocate(this->_M_impl._M_start,
			this->_M_impl._M_end_of_storage
			- this->_M_impl._M_start);
	  this->_M_impl._M_start = __tmp;
	  this->_M_impl._M_finish = __tmp + __old_size;
	  this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __n;
	}
    }

  template<typename _Tp, typename _Alloc>
    typename vector<_Tp, _Alloc>::iterator
    vector<_Tp, _Alloc>::
    insert(iterator __position, const value_type& __x)
    {
      const size_type __n = __position - begin();
      if (this->_M_impl._M_finish != this->_M_impl._M_end_of_storage
	  && __position == end())
	{
	  this->_M_impl.construct(this->_M_impl._M_finish, __x);
	  ++this->_M_impl._M_finish;
	}
      else
        _M_insert_aux(__position, __x);
      return begin() + __n;
    }

  template<typename _Tp, typename _Alloc>
    typename vector<_Tp, _Alloc>::iterator
    vector<_Tp, _Alloc>::
    erase(iterator __position)
    {
      if (__position + 1 != end())
        std::copy(__position + 1, end(), __position);
      --this->_M_impl._M_finish;
      this->_M_impl.destroy(this->_M_impl._M_finish);
      return __position;
    }

  template<typename _Tp, typename _Alloc>
    typename vector<_Tp, _Alloc>::iterator
    vector<_Tp, _Alloc>::
    erase(iterator __first, iterator __last)
    {
      iterator __i(std::copy(__last, end(), __first));
      std::_Destroy(__i, end(), _M_get_Tp_allocator());
      this->_M_impl._M_finish = this->_M_impl._M_finish - (__last - __first);
      return __first;
    }

  template<typename _Tp, typename _Alloc>
    vector<_Tp, _Alloc>&
    vector<_Tp, _Alloc>::
    operator=(const vector<_Tp, _Alloc>& __x)
    {
      if (&__x != this)
	{
	  const size_type __xlen = __x.size();
	  if (__xlen > capacity())
	    {
	      pointer __tmp = _M_allocate_and_copy(__xlen, __x.begin(),
						   __x.end());
	      std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
			    _M_get_Tp_allocator());
	      _M_deallocate(this->_M_impl._M_start,
			    this->_M_impl._M_end_of_storage
			    - this->_M_impl._M_start);
	      this->_M_impl._M_start = __tmp;
	      this->_M_impl._M_end_of_storage = this->_M_impl._M_start + __xlen;
	    }
	  else if (size() >= __xlen)
	    {
	      iterator __i(std::copy(__x.begin(), __x.end(), begin()));
	      std::_Destroy(__i, end(), _M_get_Tp_allocator());
	    }
	  else
	    {
	      std::copy(__x.begin(), __x.begin() + size(),
			this->_M_impl._M_start);
	      std::__uninitialized_copy_a(__x.begin() + size(),
					  __x.end(), this->_M_impl._M_finish,
					  _M_get_Tp_allocator());
	    }
	  this->_M_impl._M_finish = this->_M_impl._M_start + __xlen;
	}
      return *this;
    }

  template<typename _Tp, typename _Alloc>
    void
    vector<_Tp, _Alloc>::
    _M_fill_assign(size_t __n, const value_type& __val)
    {
      if (__n > capacity())
	{
	  vector __tmp(__n, __val, _M_get_Tp_allocator());
	  __tmp.swap(*this);
	}
      else if (__n > size())
	{
	  std::fill(begin(), end(), __val);
	  std::__uninitialized_fill_n_a(this->_M_impl._M_finish,
					__n - size(), __val,
					_M_get_Tp_allocator());
	  this->_M_impl._M_finish += __n - size();
	}
      else
        erase(std::fill_n(begin(), __n, __val), end());
    }

  template<typename _Tp, typename _Alloc>
    template<typename _InputIterator>
      void
      vector<_Tp, _Alloc>::
      _M_assign_aux(_InputIterator __first, _InputIterator __last,
		    std::input_iterator_tag)
      {
	iterator __cur(begin());
	for (; __first != __last && __cur != end(); ++__cur, ++__first)
	  *__cur = *__first;
	if (__first == __last)
	  erase(__cur, end());
	else
	  insert(end(), __first, __last);
      }

  template<typename _Tp, typename _Alloc>
    template<typename _ForwardIterator>
      void
      vector<_Tp, _Alloc>::
      _M_assign_aux(_ForwardIterator __first, _ForwardIterator __last,
		    std::forward_iterator_tag)
      {
	const size_type __len = std::distance(__first, __last);

	if (__len > capacity())
	  {
	    pointer __tmp(_M_allocate_and_copy(__len, __first, __last));
	    std::_Destroy(this->_M_impl._M_start, this->_M_impl._M_finish,
			  _M_get_Tp_allocator());
	    _M_deallocate(this->_M_impl._M_start,
			  this->_M_impl._M_end_of_storage
			  - this->_M_impl._M_start);
	    this->_M_impl._M_start = __tmp;
	    this->_M_impl._M_finish = this->_M_impl._M_start + __len;
	    this->_M_impl._M_end_of_storage = this->_M_impl._M_finish;
	  }
	else if (size() >= __len)
	  {
	    iterator __new_finish(std::copy(__first, __last,
				       this->_M_impl._M_start));
	    std::_Destroy(__new_finish, end(), _M_get_Tp_allocator());
	    this->_M_impl._M_finish = __new_finish.base();
	  }
	else
	  {
	    _ForwardIterator __mid = __first;
	    std::advance(__mid, size());
	    std::copy(__first, __mid, this->_M_impl._M_start);
	    this->_M_impl._M_finish =
	      std::__uninitialized_copy_a(__mid, __last,
					  this->_M_impl._M_finish,
					  _M_get_Tp_allocator());
	  }
      }

  template<typename _Tp, typename _Alloc>
    void
    vector<_Tp, _Alloc>::