1// -*- C++ -*-
2
3// Copyright (C) 2005, 2006 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 2, 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// You should have received a copy of the GNU General Public License
17// along with this library; see the file COPYING.  If not, write to
18// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
19// MA 02111-1307, USA.
20
21// As a special exception, you may use this file as part of a free
22// software library without restriction.  Specifically, if other files
23// instantiate templates or use macros or inline functions from this
24// file, or you compile this file and link it with other files to
25// produce an executable, this file does not by itself cause the
26// resulting executable to be covered by the GNU General Public
27// License.  This exception does not however invalidate any other
28// reasons why the executable file might be covered by the GNU General
29// Public License.
30
31// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
32
33// Permission to use, copy, modify, sell, and distribute this software
34// is hereby granted without fee, provided that the above copyright
35// notice appears in all copies, and that both that copyright notice
36// and this permission notice appear in supporting documentation. None
37// of the above authors, nor IBM Haifa Research Laboratories, make any
38// representation about the suitability of this software for any
39// purpose. It is provided "as is" without express or implied
40// warranty.
41
42/**
43 * @file r_erase_fn_imps.hpp
44 * Contains an implementation class for bin_search_tree_.
45 */
46
47PB_DS_CLASS_T_DEC
48inline void
49PB_DS_CLASS_C_DEC::
50actual_erase_node(node_pointer p_z)
51{
52  _GLIBCXX_DEBUG_ASSERT(m_size > 0);
53  --m_size;
54  _GLIBCXX_DEBUG_ONLY(erase_existing(PB_DS_V2F(p_z->m_value)));
55  p_z->~node();
56  s_node_allocator.deallocate(p_z, 1);
57}
58
59PB_DS_CLASS_T_DEC
60inline void
61PB_DS_CLASS_C_DEC::
62update_min_max_for_erased_node(node_pointer p_z)
63{
64  if (m_size == 1)
65    {
66      m_p_head->m_p_left = m_p_head->m_p_right = m_p_head;
67      return;
68    }
69
70  if (m_p_head->m_p_left == p_z)
71    {
72      iterator it(p_z);
73      ++it;
74      m_p_head->m_p_left = it.m_p_nd;
75    }
76  else if (m_p_head->m_p_right == p_z)
77    {
78      iterator it(p_z);
79      --it;
80      m_p_head->m_p_right = it.m_p_nd;
81    }
82}
83
84PB_DS_CLASS_T_DEC
85void
86PB_DS_CLASS_C_DEC::
87clear()
88{
89  _GLIBCXX_DEBUG_ONLY(assert_valid(true, true);)
90  clear_imp(m_p_head->m_p_parent);
91  m_size = 0;
92  initialize();
93  _GLIBCXX_DEBUG_ONLY(map_debug_base::clear();)
94  _GLIBCXX_DEBUG_ONLY(assert_valid(true, true);)
95}
96
97PB_DS_CLASS_T_DEC
98void
99PB_DS_CLASS_C_DEC::
100clear_imp(node_pointer p_nd)
101{
102  if (p_nd == NULL)
103    return;
104  clear_imp(p_nd->m_p_left);
105  clear_imp(p_nd->m_p_right);
106  p_nd->~Node();
107  s_node_allocator.deallocate(p_nd, 1);
108}
109
110