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/cc_hash_table_map_/cond_key_dtor_entry_dealtor.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 cond_key_dtor_entry_dealtor.hpp
  38  * Contains a conditional key destructor, used for exception handling.
  39  */
  40
  41 namespace __gnu_pbds
  42 {
  43   namespace detail
  44   {
  45
  46 #define PB_DS_CLASS_T_DEC template<typename HT_Map>
  47 #define PB_DS_CLASS_C_DEC PB_DS_CKDED_CLASS_NAME<HT_Map>
  48
  49     /**
  50      * A conditional key destructor, used for exception handling.
  51      **/
  52     template<typename HT_Map>
  53     class PB_DS_CKDED_CLASS_NAME
  54     {
  55     public:
  56       typedef typename HT_Map::entry entry;
  57       typedef typename HT_Map::entry_allocator entry_allocator;
  58       typedef typename HT_Map::key_type key_type;
  59
  60       inline
  61       PB_DS_CKDED_CLASS_NAME(entry_allocator* p_a, entry* p_e);
  62
  63       inline
  64       ~PB_DS_CKDED_CLASS_NAME();
  65
  66       inline void
  67       set_key_destruct();
  68
  69       inline void
  70       set_no_action_destructor();
  71
  72     protected:
  73       entry_allocator* const m_p_a;
  74       entry* const m_p_e;
  75
  76       bool m_key_destruct;
  77       bool m_no_action_destructor;
  78     };
  79
  80     PB_DS_CLASS_T_DEC
  81     inline
  82     PB_DS_CLASS_C_DEC::
  83     PB_DS_CKDED_CLASS_NAME(entry_allocator* p_a, entry* p_e)
  84     : m_p_a(p_a), m_p_e(p_e), m_key_destruct(false),
  85       m_no_action_destructor(false)
  86     { }
  87
  88     PB_DS_CLASS_T_DEC
  89     inline void
  90     PB_DS_CLASS_C_DEC::
  91     set_key_destruct()
  92     { m_key_destruct = true; }
  93
  94     PB_DS_CLASS_T_DEC
  95     inline void
  96     PB_DS_CLASS_C_DEC::
  97     set_no_action_destructor()
  98     { m_no_action_destructor = true; }
  99
 100     PB_DS_CLASS_T_DEC
 101     inline
 102     PB_DS_CLASS_C_DEC::
 103     ~PB_DS_CKDED_CLASS_NAME()
 104     {
 105       if (m_no_action_destructor)
 106         return;
 107       if (m_key_destruct)
 108         m_p_e->m_value.first.~key_type();
 109       m_p_a->deallocate(m_p_e, 1);
 110     }
 111
 112 #undef PB_DS_CLASS_T_DEC
 113 #undef PB_DS_CLASS_C_DEC
 114
 115   } // namespace detail
 116 } // namespace __gnu_pbds
 117