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

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2013 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_/find_fn_imps.hpp
  38  * Contains an implementation class for bin_search_tree_.
  39  */
  40
  41 PB_DS_CLASS_T_DEC
  42 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
  43 PB_DS_CLASS_C_DEC::
  44 lower_bound(key_const_reference r_key) const
  45 {
  46   node_pointer p_pot = m_p_head;
  47   node_pointer p_nd = m_p_head->m_p_parent;
  48
  49   while (p_nd != 0)
  50     if (Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
  51       p_nd = p_nd->m_p_right;
  52     else
  53       {
  54         p_pot = p_nd;
  55         p_nd = p_nd->m_p_left;
  56       }
  57   return iterator(p_pot);
  58 }
  59
  60 PB_DS_CLASS_T_DEC
  61 inline typename PB_DS_CLASS_C_DEC::point_iterator
  62 PB_DS_CLASS_C_DEC::
  63 lower_bound(key_const_reference r_key)
  64 {
  65   node_pointer p_pot = m_p_head;
  66   node_pointer p_nd = m_p_head->m_p_parent;
  67
  68   while (p_nd != 0)
  69     if (Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
  70       p_nd = p_nd->m_p_right;
  71     else
  72       {
  73         p_pot = p_nd;
  74         p_nd = p_nd->m_p_left;
  75       }
  76   return iterator(p_pot);
  77 }
  78
  79 PB_DS_CLASS_T_DEC
  80 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
  81 PB_DS_CLASS_C_DEC::
  82 upper_bound(key_const_reference r_key) const
  83 {
  84   node_pointer p_pot = m_p_head;
  85   node_pointer p_nd = m_p_head->m_p_parent;
  86
  87   while (p_nd != 0)
  88     if (Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
  89       {
  90         p_pot = p_nd;
  91         p_nd = p_nd->m_p_left;
  92       }
  93     else
  94       p_nd = p_nd->m_p_right;
  95   return const_iterator(p_pot);
  96 }
  97
  98 PB_DS_CLASS_T_DEC
  99 inline typename PB_DS_CLASS_C_DEC::point_iterator
 100 PB_DS_CLASS_C_DEC::
 101 upper_bound(key_const_reference r_key)
 102 {
 103   node_pointer p_pot = m_p_head;
 104   node_pointer p_nd = m_p_head->m_p_parent;
 105
 106   while (p_nd != 0)
 107     if (Cmp_Fn::operator()(r_key, PB_DS_V2F(p_nd->m_value)))
 108       {
 109         p_pot = p_nd;
 110         p_nd = p_nd->m_p_left;
 111       }
 112     else
 113       p_nd = p_nd->m_p_right;
 114   return point_iterator(p_pot);
 115 }
 116
 117 PB_DS_CLASS_T_DEC
 118 inline typename PB_DS_CLASS_C_DEC::point_iterator
 119 PB_DS_CLASS_C_DEC::
 120 find(key_const_reference r_key)
 121 {
 122   PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
 123   node_pointer p_pot = m_p_head;
 124   node_pointer p_nd = m_p_head->m_p_parent;
 125
 126   while (p_nd != 0)
 127     if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
 128       {
 129         p_pot = p_nd;
 130         p_nd = p_nd->m_p_left;
 131       }
 132     else
 133       p_nd = p_nd->m_p_right;
 134
 135   node_pointer ret = p_pot;
 136   if (p_pot != m_p_head)
 137     {
 138       const bool __cmp = Cmp_Fn::operator()(r_key, PB_DS_V2F(p_pot->m_value));
 139       if (__cmp)
 140         ret = m_p_head;
 141     }
 142   return point_iterator(ret);
 143 }
 144
 145 PB_DS_CLASS_T_DEC
 146 inline typename PB_DS_CLASS_C_DEC::point_const_iterator
 147 PB_DS_CLASS_C_DEC::
 148 find(key_const_reference r_key) const
 149 {
 150   PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
 151   node_pointer p_pot = m_p_head;
 152   node_pointer p_nd = m_p_head->m_p_parent;
 153
 154   while (p_nd != 0)
 155     if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value), r_key))
 156       {
 157         p_pot = p_nd;
 158         p_nd = p_nd->m_p_left;
 159       }
 160     else
 161       p_nd = p_nd->m_p_right;
 162
 163   node_pointer ret = p_pot;
 164   if (p_pot != m_p_head)
 165     {
 166       const bool __cmp = Cmp_Fn::operator()(r_key, PB_DS_V2F(p_pot->m_value));
 167       if (__cmp)
 168         ret = m_p_head;
 169     }
 170   return point_const_iterator(ret);
 171 }