release/src-rt-6.x.4708/toolchains/hndtools-arm-linux-2.6.36-uclibc-4.5.3/arm-brcm-linux-uclibcgnueabi/include/c++/4.5.3/ext/pb_ds/detail/ov_tree_map_/erase_fn_imps.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006, 2009 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 erase_fn_imps.hpp
  38  * Contains an implementation class for ov_tree_.
  39  */
  40
  41 PB_DS_CLASS_T_DEC
  42 void
  43 PB_DS_CLASS_C_DEC::
  44 clear()
  45 {
  46   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  47   if (m_size == 0)
  48     {
  49       _GLIBCXX_DEBUG_ONLY(assert_valid();)
  50       return;
  51     }
  52   else
  53     {
  54       reallocate_metadata((node_update* )this, 0);
  55       cond_dtor<size_type> cd(m_a_values, m_end_it, m_size);
  56     }
  57
  58   _GLIBCXX_DEBUG_ONLY(debug_base::clear();)
  59   m_a_values = NULL;
  60   m_size = 0;
  61   m_end_it = m_a_values;
  62   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  63 }
  64
  65 PB_DS_CLASS_T_DEC
  66 template<typename Pred>
  67 inline typename PB_DS_CLASS_C_DEC::size_type
  68 PB_DS_CLASS_C_DEC::
  69 erase_if(Pred pred)
  70 {
  71   _GLIBCXX_DEBUG_ONLY(assert_valid();)
  72
  73 #ifdef PB_DS_REGRESSION
  74     typename Allocator::group_adjustor adjust(m_size);
  75 #endif
  76
  77   size_type new_size = 0;
  78   size_type num_val_ersd = 0;
  79   iterator source_it = m_a_values;
  80   for (source_it = begin(); source_it != m_end_it; ++source_it)
  81     if (!pred(*source_it))
  82       ++new_size;
  83     else
  84       ++num_val_ersd;
  85
  86   if (new_size == 0)
  87     {
  88       clear();
  89       return num_val_ersd;
  90     }
  91
  92   value_vector a_new_values = s_value_alloc.allocate(new_size);
  93   iterator target_it = a_new_values;
  94   cond_dtor<size_type> cd(a_new_values, target_it, new_size);
  95   _GLIBCXX_DEBUG_ONLY(debug_base::clear());
  96   for (source_it = begin(); source_it != m_end_it; ++source_it)
  97     {
  98       if (!pred(*source_it))
  99         {
 100           new (const_cast<void*>(static_cast<const void* >(target_it)))
 101             value_type(*source_it);
 102
 103           _GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(*source_it)));
 104           ++target_it;
 105         }
 106     }
 107
 108   reallocate_metadata((node_update* )this, new_size);
 109   cd.set_no_action();
 110
 111   {
 112     cond_dtor<size_type> cd1(m_a_values, m_end_it, m_size);
 113   }
 114
 115   m_a_values = a_new_values;
 116   m_size = new_size;
 117   m_end_it = target_it;
 118   update(node_begin(), (node_update* )this);
 119   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 120   return num_val_ersd;
 121 }
 122
 123 PB_DS_CLASS_T_DEC
 124 template<typename It>
 125 It
 126 PB_DS_CLASS_C_DEC::
 127 erase_imp(It it)
 128 {
 129   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 130   if (it == end())
 131     return end();
 132
 133   _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::check_key_exists(PB_DS_V2F(*it));)
 134
 135 #ifdef PB_DS_REGRESSION
 136     typename Allocator::group_adjustor adjust(m_size);
 137 #endif
 138
 139   _GLIBCXX_DEBUG_ASSERT(m_size > 0);
 140   value_vector a_values = s_value_alloc.allocate(m_size - 1);
 141   iterator source_it = begin();
 142   iterator source_end_it = end();
 143   iterator target_it = a_values;
 144   iterator ret_it = end();
 145
 146   cond_dtor<size_type> cd(a_values, target_it, m_size - 1);
 147
 148   _GLIBCXX_DEBUG_ONLY(size_type cnt = 0;)
 149
 150   while (source_it != source_end_it)
 151     {
 152       if (source_it != it)
 153         {
 154           _GLIBCXX_DEBUG_ONLY(++cnt;)
 155           _GLIBCXX_DEBUG_ASSERT(cnt != m_size);
 156           new (const_cast<void* >(static_cast<const void* >(target_it)))
 157               value_type(*source_it);
 158
 159           ++target_it;
 160         }
 161       else
 162         ret_it = target_it;
 163     ++source_it;
 164     }
 165
 166   _GLIBCXX_DEBUG_ASSERT(m_size > 0);
 167   reallocate_metadata((node_update* )this, m_size - 1);
 168   cd.set_no_action();
 169   _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::erase_existing(PB_DS_V2F(*it));)
 170   {
 171     cond_dtor<size_type> cd1(m_a_values, m_end_it, m_size);
 172   }
 173
 174   m_a_values = a_values;
 175   --m_size;
 176   m_end_it = m_a_values + m_size;
 177   update(node_begin(), (node_update* )this);
 178   _GLIBCXX_DEBUG_ONLY(assert_valid();)
 179   return It(ret_it);
 180 }
 181
 182 PB_DS_CLASS_T_DEC
 183 bool
 184 PB_DS_CLASS_C_DEC::
 185 erase(const_key_reference r_key)
 186 {
 187   point_iterator it = find(r_key);
 188   if (it == end())
 189     return false;
 190   erase(it);
 191   return true;
 192 }
 193