libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/find_fn_imps.hpp

   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 find_fn_imps.hpp
  44  * Contains an implementation class for bin_search_tree_.
  45  */
  46
  47 PB_DS_CLASS_T_DEC
  48 inline typename PB_DS_CLASS_C_DEC::const_point_iterator
  49 PB_DS_CLASS_C_DEC::
  50 lower_bound(const_key_reference r_key) const
  51 {
  52   node_pointer p_pot = m_p_head;
  53   node_pointer p_nd = m_p_head->m_p_parent;
  54
  55   while (p_nd != NULL)
  56     if (Cmp_Fn::operator()(
  57                            PB_DS_V2F(p_nd->m_value),
  58                            r_key))
  59       p_nd = p_nd->m_p_right;
  60     else
  61       {
  62         p_pot = p_nd;
  63
  64         p_nd = p_nd->m_p_left;
  65       }
  66
  67   return (iterator(p_pot));
  68 }
  69
  70 PB_DS_CLASS_T_DEC
  71 inline typename PB_DS_CLASS_C_DEC::point_iterator
  72 PB_DS_CLASS_C_DEC::
  73 lower_bound(const_key_reference r_key)
  74 {
  75   node_pointer p_pot = m_p_head;
  76   node_pointer p_nd = m_p_head->m_p_parent;
  77
  78   while (p_nd != NULL)
  79     if (Cmp_Fn::operator()(
  80                            PB_DS_V2F(p_nd->m_value),
  81                            r_key))
  82       p_nd = p_nd->m_p_right;
  83     else
  84       {
  85         p_pot = p_nd;
  86
  87         p_nd = p_nd->m_p_left;
  88       }
  89
  90   return (iterator(p_pot));
  91 }
  92
  93 PB_DS_CLASS_T_DEC
  94 inline typename PB_DS_CLASS_C_DEC::const_point_iterator
  95 PB_DS_CLASS_C_DEC::
  96 upper_bound(const_key_reference r_key) const
  97 {
  98   node_pointer p_pot = m_p_head;
  99   node_pointer p_nd = m_p_head->m_p_parent;
 100
 101   while (p_nd != NULL)
 102     if (Cmp_Fn::operator()(r_key,
 103                            PB_DS_V2F(p_nd->m_value)))
 104       {
 105         p_pot = p_nd,
 106
 107           p_nd = p_nd->m_p_left;
 108       }
 109     else
 110       p_nd = p_nd->m_p_right;
 111
 112   return (const_iterator(p_pot));
 113 }
 114
 115 PB_DS_CLASS_T_DEC
 116 inline typename PB_DS_CLASS_C_DEC::point_iterator
 117 PB_DS_CLASS_C_DEC::
 118 upper_bound(const_key_reference r_key)
 119 {
 120   node_pointer p_pot = m_p_head;
 121   node_pointer p_nd = m_p_head->m_p_parent;
 122
 123   while (p_nd != NULL)
 124     if (Cmp_Fn::operator()(r_key,
 125                            PB_DS_V2F(p_nd->m_value)))
 126       {
 127         p_pot = p_nd,
 128
 129           p_nd = p_nd->m_p_left;
 130       }
 131     else
 132       p_nd = p_nd->m_p_right;
 133
 134   return (point_iterator(p_pot));
 135 }
 136
 137 PB_DS_CLASS_T_DEC
 138 inline typename PB_DS_CLASS_C_DEC::point_iterator
 139 PB_DS_CLASS_C_DEC::
 140 find(const_key_reference r_key)
 141 {
 142   _GLIBCXX_DEBUG_ONLY(structure_only_assert_valid();)
 143
 144     node_pointer p_pot = m_p_head;
 145   node_pointer p_nd = m_p_head->m_p_parent;
 146
 147   while (p_nd != NULL)
 148     if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
 149       {
 150         p_pot = p_nd;
 151
 152         p_nd = p_nd->m_p_left;
 153       }
 154     else
 155       p_nd = p_nd->m_p_right;
 156
 157   return point_iterator((p_pot != m_p_head&&  Cmp_Fn::operator()(
 158                                                                  r_key,
 159                                                                  PB_DS_V2F(p_pot->m_value)))?
 160                         m_p_head : p_pot);
 161 }
 162
 163 PB_DS_CLASS_T_DEC
 164 inline typename PB_DS_CLASS_C_DEC::const_point_iterator
 165 PB_DS_CLASS_C_DEC::
 166 find(const_key_reference r_key) const
 167 {
 168   _GLIBCXX_DEBUG_ONLY(structure_only_assert_valid();)
 169
 170     node_pointer p_pot = m_p_head;
 171   node_pointer p_nd = m_p_head->m_p_parent;
 172
 173   while (p_nd != NULL)
 174     if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
 175       {
 176         p_pot = p_nd;
 177
 178         p_nd = p_nd->m_p_left;
 179       }
 180     else
 181       p_nd = p_nd->m_p_right;
 182
 183   return const_point_iterator((p_pot != m_p_head&&  Cmp_Fn::operator()(
 184                                                                        r_key,
 185                                                                        PB_DS_V2F(p_pot->m_value)))?
 186                               m_p_head : p_pot);
 187 }
 188