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// -*- C++ -*-
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice and
// this permission notice appear in supporting documentation. None of
// the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied warranty.
/**
* @file cond_key_dtor_entry_dealtor.hpp
* Contains a conditional key destructor, used for exception handling.
*/
namespace pb_assoc
{
namespace detail
{
#define PB_ASSOC_CLASS_T_DEC \
template<class HT_Map>
#define PB_ASSOC_CLASS_C_DEC \
PB_ASSOC_CKDED_CLASS_NAME< \
HT_Map>
/**
* A conditional key destructor, used for exception handling.
**/
template<class HT_Map>
class PB_ASSOC_CKDED_CLASS_NAME
{
public:
typedef typename HT_Map::entry entry;
typedef typename HT_Map::entry_allocator entry_allocator;
typedef typename HT_Map::key_type key_type;
public:
inline
PB_ASSOC_CKDED_CLASS_NAME(entry_allocator* p_a, entry* p_e);
inline
~PB_ASSOC_CKDED_CLASS_NAME();
inline void
set_key_destruct();
inline void
set_no_action_destructor();
protected:
entry_allocator* const m_p_a;
entry* const m_p_e;
bool m_key_destruct;
bool m_no_action_destructor;
};
PB_ASSOC_CLASS_T_DEC
inline
PB_ASSOC_CLASS_C_DEC::
PB_ASSOC_CKDED_CLASS_NAME(entry_allocator* p_a, entry* p_e) :
m_p_a(p_a),
m_p_e(p_e),
m_key_destruct(false),
m_no_action_destructor(false)
{ }
PB_ASSOC_CLASS_T_DEC
inline void
PB_ASSOC_CLASS_C_DEC::
set_key_destruct()
{
m_key_destruct = true;
}
PB_ASSOC_CLASS_T_DEC
inline void
PB_ASSOC_CLASS_C_DEC::
set_no_action_destructor()
{
m_no_action_destructor = true;
}
PB_ASSOC_CLASS_T_DEC
inline
PB_ASSOC_CLASS_C_DEC::
~PB_ASSOC_CKDED_CLASS_NAME()
{
if (m_no_action_destructor)
return;
if (m_key_destruct)
m_p_e->m_value.first.~key_type();
m_p_a->deallocate(m_p_e, 1);
}
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
} // namespace detail
} // namespace pb_assoc
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