deque.tcc

mingw32.rar

  // Called only if _M_impl._M_finish._M_cur == _M_impl._M_finish._M_first.
  template <typename _Tp, typename _Alloc>
    void deque<_Tp,_Alloc>::
    _M_pop_back_aux()
    {
      _M_deallocate_node(this->_M_impl._M_finish._M_first);
      this->_M_impl._M_finish._M_set_node(this->_M_impl._M_finish._M_node - 1);
      this->_M_impl._M_finish._M_cur = this->_M_impl._M_finish._M_last - 1;
      std::_Destroy(this->_M_impl._M_finish._M_cur);
    }

  // Called only if _M_impl._M_start._M_cur == _M_impl._M_start._M_last - 1.  Note that
  // if the deque has at least one element (a precondition for this member
  // function), and if _M_impl._M_start._M_cur == _M_impl._M_start._M_last, then the deque
  // must have at least two nodes.
  template <typename _Tp, typename _Alloc>
    void deque<_Tp,_Alloc>::
    _M_pop_front_aux()
    {
      std::_Destroy(this->_M_impl._M_start._M_cur);
      _M_deallocate_node(this->_M_impl._M_start._M_first);
      this->_M_impl._M_start._M_set_node(this->_M_impl._M_start._M_node + 1);
      this->_M_impl._M_start._M_cur = this->_M_impl._M_start._M_first;
    }

  template <typename _Tp, typename _Alloc>
    template <typename _InputIterator>
      void
      deque<_Tp,_Alloc>::
      _M_range_insert_aux(iterator __pos,
                          _InputIterator __first, _InputIterator __last,
                          input_iterator_tag)
      { std::copy(__first, __last, std::inserter(*this, __pos)); }

  template <typename _Tp, typename _Alloc>
    template <typename _ForwardIterator>
      void
      deque<_Tp,_Alloc>::
      _M_range_insert_aux(iterator __pos,
                          _ForwardIterator __first, _ForwardIterator __last,
                          forward_iterator_tag)
      {
        size_type __n = std::distance(__first, __last);
        if (__pos._M_cur == this->_M_impl._M_start._M_cur)
	  {
	    iterator __new_start = _M_reserve_elements_at_front(__n);
	    try
	      {
		std::uninitialized_copy(__first, __last, __new_start);
		this->_M_impl._M_start = __new_start;
	      }
	    catch(...)
	      {
		_M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node);
		__throw_exception_again;
	      }
	  }
        else if (__pos._M_cur == this->_M_impl._M_finish._M_cur)
	  {
	    iterator __new_finish = _M_reserve_elements_at_back(__n);
	    try
	      {
		std::uninitialized_copy(__first, __last, this->_M_impl._M_finish);
		this->_M_impl._M_finish = __new_finish;
	      }
	    catch(...)
	      {
		_M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
				 __new_finish._M_node + 1);
		__throw_exception_again;
	      }
	  }
        else
          _M_insert_aux(__pos, __first, __last, __n);
      }

  template <typename _Tp, typename _Alloc>
    typename deque<_Tp, _Alloc>::iterator
    deque<_Tp,_Alloc>::
    _M_insert_aux(iterator __pos, const value_type& __x)
    {
      difference_type __index = __pos - this->_M_impl._M_start;
      value_type __x_copy = __x; // XXX copy
      if (static_cast<size_type>(__index) < size() / 2)
	{
	  push_front(front());
	  iterator __front1 = this->_M_impl._M_start;
	  ++__front1;
	  iterator __front2 = __front1;
	  ++__front2;
	  __pos = this->_M_impl._M_start + __index;
	  iterator __pos1 = __pos;
	  ++__pos1;
	  std::copy(__front2, __pos1, __front1);
	}
      else
	{
	  push_back(back());
	  iterator __back1 = this->_M_impl._M_finish;
	  --__back1;
	  iterator __back2 = __back1;
	  --__back2;
	  __pos = this->_M_impl._M_start + __index;
	  std::copy_backward(__pos, __back2, __back1);
	}
      *__pos = __x_copy;
      return __pos;
    }

  template <typename _Tp, typename _Alloc>
    void
    deque<_Tp,_Alloc>::
    _M_insert_aux(iterator __pos, size_type __n, const value_type& __x)
    {
      const difference_type __elems_before = __pos - this->_M_impl._M_start;
      size_type __length = this->size();
      value_type __x_copy = __x;
      if (__elems_before < difference_type(__length / 2))
	{
	  iterator __new_start = _M_reserve_elements_at_front(__n);
	  iterator __old_start = this->_M_impl._M_start;
	  __pos = this->_M_impl._M_start + __elems_before;
	  try
	    {
	      if (__elems_before >= difference_type(__n))
		{
		  iterator __start_n = this->_M_impl._M_start + difference_type(__n);
		  std::uninitialized_copy(this->_M_impl._M_start, __start_n,
					  __new_start);
		  this->_M_impl._M_start = __new_start;
		  std::copy(__start_n, __pos, __old_start);
		  fill(__pos - difference_type(__n), __pos, __x_copy);
		}
	      else
		{
		  std::__uninitialized_copy_fill(this->_M_impl._M_start, __pos,
						 __new_start,
						 this->_M_impl._M_start, __x_copy);
		  this->_M_impl._M_start = __new_start;
		  std::fill(__old_start, __pos, __x_copy);
		}
	    }
	  catch(...)
	    {
	      _M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node);
	      __throw_exception_again;
	    }
	}
      else
	{
	  iterator __new_finish = _M_reserve_elements_at_back(__n);
	  iterator __old_finish = this->_M_impl._M_finish;
	  const difference_type __elems_after =
	    difference_type(__length) - __elems_before;
	  __pos = this->_M_impl._M_finish - __elems_after;
	  try
	    {
	      if (__elems_after > difference_type(__n))
		{
		  iterator __finish_n = this->_M_impl._M_finish - difference_type(__n);
		  std::uninitialized_copy(__finish_n, this->_M_impl._M_finish,
					  this->_M_impl._M_finish);
		  this->_M_impl._M_finish = __new_finish;
		  std::copy_backward(__pos, __finish_n, __old_finish);
		  std::fill(__pos, __pos + difference_type(__n), __x_copy);
		}
	      else
		{
		  std::__uninitialized_fill_copy(this->_M_impl._M_finish,
						 __pos + difference_type(__n),
						 __x_copy, __pos,
						 this->_M_impl._M_finish);
		  this->_M_impl._M_finish = __new_finish;
		  std::fill(__pos, __old_finish, __x_copy);
		}
	    }
	  catch(...)
	    {
	      _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
			       __new_finish._M_node + 1);
	      __throw_exception_again;
	    }
	}
    }

  template <typename _Tp, typename _Alloc>
    template <typename _ForwardIterator>
      void
      deque<_Tp,_Alloc>::
      _M_insert_aux(iterator __pos,
                    _ForwardIterator __first, _ForwardIterator __last,
                    size_type __n)
      {
        const difference_type __elemsbefore = __pos - this->_M_impl._M_start;
        size_type __length = size();
        if (static_cast<size_type>(__elemsbefore) < __length / 2)
	  {
	    iterator __new_start = _M_reserve_elements_at_front(__n);
	    iterator __old_start = this->_M_impl._M_start;
	    __pos = this->_M_impl._M_start + __elemsbefore;
	    try
	      {
		if (__elemsbefore >= difference_type(__n))
		  {
		    iterator __start_n = this->_M_impl._M_start + difference_type(__n);
		    std::uninitialized_copy(this->_M_impl._M_start, __start_n,
					    __new_start);
		    this->_M_impl._M_start = __new_start;
		    std::copy(__start_n, __pos, __old_start);
		    std::copy(__first, __last, __pos - difference_type(__n));
		  }
		else
		  {
		    _ForwardIterator __mid = __first;
		    std::advance(__mid, difference_type(__n) - __elemsbefore);
		    std::__uninitialized_copy_copy(this->_M_impl._M_start, __pos,
						   __first, __mid, __new_start);
		    this->_M_impl._M_start = __new_start;
		    std::copy(__mid, __last, __old_start);
		  }
	      }
	    catch(...)
	      {
		_M_destroy_nodes(__new_start._M_node, this->_M_impl._M_start._M_node);
		__throw_exception_again;
	      }
	  }
        else
        {
          iterator __new_finish = _M_reserve_elements_at_back(__n);
          iterator __old_finish = this->_M_impl._M_finish;
          const difference_type __elemsafter =
            difference_type(__length) - __elemsbefore;
          __pos = this->_M_impl._M_finish - __elemsafter;
          try
            {
              if (__elemsafter > difference_type(__n))
		{
		  iterator __finish_n = this->_M_impl._M_finish - difference_type(__n);
		  std::uninitialized_copy(__finish_n,
					  this->_M_impl._M_finish,
					  this->_M_impl._M_finish);
		  this->_M_impl._M_finish = __new_finish;
		  std::copy_backward(__pos, __finish_n, __old_finish);
		  std::copy(__first, __last, __pos);
		}
              else
		{
		  _ForwardIterator __mid = __first;
		  std::advance(__mid, __elemsafter);
		  std::__uninitialized_copy_copy(__mid, __last, __pos,
						 this->_M_impl._M_finish,
						 this->_M_impl._M_finish);
		  this->_M_impl._M_finish = __new_finish;
		  std::copy(__first, __mid, __pos);
		}
            }
          catch(...)
            {
              _M_destroy_nodes(this->_M_impl._M_finish._M_node + 1,
			       __new_finish._M_node + 1);
              __throw_exception_again;
            }
        }
      }

  template <typename _Tp, typename _Alloc>
    void
    deque<_Tp,_Alloc>::
    _M_new_elements_at_front(size_type __new_elems)
    {
      size_type __new_nodes
	= (__new_elems + _S_buffer_size() - 1) / _S_buffer_size();
      _M_reserve_map_at_front(__new_nodes);
      size_type __i;
      try
        {
          for (__i = 1; __i <= __new_nodes; ++__i)
            *(this->_M_impl._M_start._M_node - __i) = this->_M_allocate_node();
        }
      catch(...)
        {
          for (size_type __j = 1; __j < __i; ++__j)
            _M_deallocate_node(*(this->_M_impl._M_start._M_node - __j));
          __throw_exception_again;
        }
    }

  template <typename _Tp, typename _Alloc>
    void
    deque<_Tp,_Alloc>::
    _M_new_elements_at_back(size_type __new_elems)
    {
      size_type __new_nodes
          = (__new_elems + _S_buffer_size() - 1) / _S_buffer_size();
      _M_reserve_map_at_back(__new_nodes);
      size_type __i;
      try
        {
          for (__i = 1; __i <= __new_nodes; ++__i)
            *(this->_M_impl._M_finish._M_node + __i) = this->_M_allocate_node();
        }
      catch(...)
        {
          for (size_type __j = 1; __j < __i; ++__j)
            _M_deallocate_node(*(this->_M_impl._M_finish._M_node + __j));
          __throw_exception_again;
        }
    }

  template <typename _Tp, typename _Alloc>
    void
    deque<_Tp,_Alloc>::
    _M_reallocate_map(size_type __nodes_to_add, bool __add_at_front)
    {
      size_type __old_num_nodes
	= this->_M_impl._M_finish._M_node - this->_M_impl._M_start._M_node + 1;
      size_type __new_num_nodes = __old_num_nodes + __nodes_to_add;

      _Map_pointer __new_nstart;
      if (this->_M_impl._M_map_size > 2 * __new_num_nodes)
	{
	  __new_nstart = this->_M_impl._M_map + (this->_M_impl._M_map_size
					 - __new_num_nodes) / 2
	                 + (__add_at_front ? __nodes_to_add : 0);
	  if (__new_nstart < this->_M_impl._M_start._M_node)
	    std::copy(this->_M_impl._M_start._M_node,
		    this->_M_impl._M_finish._M_node + 1,
		    __new_nstart);
	  else
	    std::copy_backward(this->_M_impl._M_start._M_node,
			       this->_M_impl._M_finish._M_node + 1,
			       __new_nstart + __old_num_nodes);
	}
      else
	{
	  size_type __new_map_size = this->_M_impl._M_map_size
	                             + std::max(this->_M_impl._M_map_size,
						__nodes_to_add) + 2;

	  _Map_pointer __new_map = this->_M_allocate_map(__new_map_size);
	  __new_nstart = __new_map + (__new_map_size - __new_num_nodes) / 2
	                 + (__add_at_front ? __nodes_to_add : 0);
	  std::copy(this->_M_impl._M_start._M_node,
		    this->_M_impl._M_finish._M_node + 1,
		    __new_nstart);
	  _M_deallocate_map(this->_M_impl._M_map, this->_M_impl._M_map_size);

	  this->_M_impl._M_map = __new_map;
	  this->_M_impl._M_map_size = __new_map_size;
	}

      this->_M_impl._M_start._M_set_node(__new_nstart);
      this->_M_impl._M_finish._M_set_node(__new_nstart + __old_num_nodes - 1);
    }
} // namespace std

#endif