mingw/lib/gcc/mingw32/4.3.3/include/c++/ext/pb_ds/detail/list_update_map_/erase_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 erase_fn_imps.hpp
  44  * Contains implementations of lu_map_.
  45  */
  46
  47 PB_DS_CLASS_T_DEC
  48 inline bool
  49 PB_DS_CLASS_C_DEC::
  50 erase(const_key_reference r_key)
  51 {
  52   _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
  53   if (m_p_l == NULL)
  54     return false;
  55
  56   if (s_eq_fn(r_key, PB_DS_V2F(m_p_l->m_value)))
  57     {
  58       entry_pointer p_next = m_p_l->m_p_next;
  59       actual_erase_entry(m_p_l);
  60       m_p_l = p_next;
  61       return true;
  62     }
  63
  64   entry_pointer p_l = m_p_l;
  65   while (p_l->m_p_next != NULL)
  66     if (s_eq_fn(r_key, PB_DS_V2F(p_l->m_p_next->m_value)))
  67       {
  68         erase_next(p_l);
  69         return true;
  70       }
  71     else
  72       p_l = p_l->m_p_next;
  73   return false;
  74 }
  75
  76 PB_DS_CLASS_T_DEC
  77 void
  78 PB_DS_CLASS_C_DEC::
  79 clear()
  80 {
  81   deallocate_all();
  82 }
  83
  84 PB_DS_CLASS_T_DEC
  85 template<typename Pred>
  86 inline typename PB_DS_CLASS_C_DEC::size_type
  87 PB_DS_CLASS_C_DEC::
  88 erase_if(Pred pred)
  89 {
  90   _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
  91   size_type num_ersd = 0;
  92   while (m_p_l != NULL && pred(m_p_l->m_value))
  93     {
  94       entry_pointer p_next = m_p_l->m_p_next;
  95       ++num_ersd;
  96       actual_erase_entry(m_p_l);
  97       m_p_l = p_next;
  98     }
  99
 100   if (m_p_l == NULL)
 101     return num_ersd;
 102
 103   entry_pointer p_l = m_p_l;
 104   while (p_l->m_p_next != NULL)
 105     {
 106       if (pred(p_l->m_p_next->m_value))
 107         {
 108           ++num_ersd;
 109           erase_next(p_l);
 110         }
 111       else
 112         p_l = p_l->m_p_next;
 113     }
 114
 115   _GLIBCXX_DEBUG_ONLY(PB_DS_CLASS_C_DEC::assert_valid();)
 116   return num_ersd;
 117 }
 118
 119 PB_DS_CLASS_T_DEC
 120 void
 121 PB_DS_CLASS_C_DEC::
 122 erase_next(entry_pointer p_l)
 123 {
 124   _GLIBCXX_DEBUG_ASSERT(p_l != NULL);
 125   _GLIBCXX_DEBUG_ASSERT(p_l != m_p_l);
 126   _GLIBCXX_DEBUG_ASSERT(p_l->m_p_next != NULL);
 127   entry_pointer p_next_l = p_l->m_p_next->m_p_next;
 128   actual_erase_entry(p_l->m_p_next);
 129   p_l->m_p_next = p_next_l;
 130 }
 131
 132 PB_DS_CLASS_T_DEC
 133 void
 134 PB_DS_CLASS_C_DEC::
 135 actual_erase_entry(entry_pointer p_l)
 136 {
 137   _GLIBCXX_DEBUG_ONLY(debug_base::erase_existing(PB_DS_V2F(p_l->m_value));)
 138   p_l->~entry();
 139   s_entry_allocator.deallocate(p_l, 1);
 140 }
 141