Where Online Learning is simpler!

The C and C++ Include Header Files

/usr/include/c++/11/ext/pb_ds/detail/bin_search_tree_/r_erase_fn_imps.hpp


$ cat -n /usr/include/c++/11/ext/pb_ds/detail/bin_search_tree_/r_erase_fn_imps.hpp

     1	// -*- C++ -*-
     2	
     3	// Copyright (C) 2005-2021 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 terms
     7	// of the GNU General Public License as published by the Free Software
     8	// Foundation; either version 3, or (at your option) any later
     9	// version.
    10	
    11	// This library is distributed in the hope that it will be useful, but
    12	// WITHOUT ANY WARRANTY; without even the implied warranty of
    13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    14	// 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	// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
    26	
    27	// Permission to use, copy, modify, sell, and distribute this software
    28	// is hereby granted without fee, provided that the above copyright
    29	// notice appears in all copies, and that both that copyright notice
    30	// and this permission notice appear in supporting documentation. None
    31	// of the above authors, nor IBM Haifa Research Laboratories, make any
    32	// representation about the suitability of this software for any
    33	// purpose. It is provided "as is" without express or implied
    34	// warranty.
    35	
    36	/**
    37	 * @file bin_search_tree_/r_erase_fn_imps.hpp
    38	 * Contains an implementation class for bin_search_tree_.
    39	 */
    40	
    41	#ifdef PB_DS_CLASS_C_DEC
    42	
    43	PB_DS_CLASS_T_DEC
    44	inline void
    45	PB_DS_CLASS_C_DEC::
    46	actual_erase_node(node_pointer p_z)
    47	{
    48	  _GLIBCXX_DEBUG_ASSERT(m_size > 0);
    49	  --m_size;
    50	  _GLIBCXX_DEBUG_ONLY(erase_existing(PB_DS_V2F(p_z->m_value));)
    51	  p_z->~node();
    52	  s_node_allocator.deallocate(p_z, 1);
    53	}
    54	
    55	PB_DS_CLASS_T_DEC
    56	inline void
    57	PB_DS_CLASS_C_DEC::
    58	update_min_max_for_erased_node(node_pointer p_z)
    59	{
    60	  if (m_size == 1)
    61	    {
    62	      m_p_head->m_p_left = m_p_head->m_p_right = m_p_head;
    63	      return;
    64	    }
    65	
    66	  if (m_p_head->m_p_left == p_z)
    67	    {
    68	      iterator it(p_z);
    69	      ++it;
    70	      m_p_head->m_p_left = it.m_p_nd;
    71	    }
    72	  else if (m_p_head->m_p_right == p_z)
    73	    {
    74	      iterator it(p_z);
    75	      --it;
    76	      m_p_head->m_p_right = it.m_p_nd;
    77	    }
    78	}
    79	
    80	PB_DS_CLASS_T_DEC
    81	void
    82	PB_DS_CLASS_C_DEC::
    83	clear()
    84	{
    85	  PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
    86	  clear_imp(m_p_head->m_p_parent);
    87	  m_size = 0;
    88	  initialize();
    89	  _GLIBCXX_DEBUG_ONLY(debug_base::clear();)
    90	  PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
    91	}
    92	
    93	PB_DS_CLASS_T_DEC
    94	void
    95	PB_DS_CLASS_C_DEC::
    96	clear_imp(node_pointer p_nd)
    97	{
    98	  if (p_nd == 0)
    99	    return;
   100	
   101	  clear_imp(p_nd->m_p_left);
   102	  clear_imp(p_nd->m_p_right);
   103	  p_nd->~Node();
   104	  s_node_allocator.deallocate(p_nd, 1);
   105	}
   106	#endif