libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/cond_key_dtor_entry_dealtor.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 cond_key_dtor_entry_dealtor.hpp
  44  * Contains a binary tree container conditional deallocator
  45  */
  46
  47 class bin_seach_tree_cond_key_dtor_entry_dealtor_
  48 {
  49 public:
  50   inline
  51   bin_seach_tree_cond_key_dtor_entry_dealtor_(node_pointer p_nd) : m_p_nd(p_nd),
  52                                                                    m_no_action_dtor(false),
  53                                                                    m_key_destruct(false)
  54   { }
  55
  56   inline void
  57   set_no_action_dtor()
  58   {
  59     m_no_action_dtor = true;
  60   }
  61
  62   inline void
  63   set_key_destruct()
  64   {
  65     m_key_destruct = true;
  66   }
  67
  68   inline
  69   ~bin_seach_tree_cond_key_dtor_entry_dealtor_()
  70   {
  71     if (m_no_action_dtor)
  72       return;
  73
  74     if (m_key_destruct)
  75       m_p_nd->m_value.first.~Key();
  76
  77     bin_tree_base::s_alloc.deallocate(m_p_nd, 1);
  78   }
  79
  80 protected:
  81   node_pointer m_p_nd;
  82
  83   bool m_no_action_dtor;
  84
  85   bool m_key_destruct;
  86 };
  87