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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, 59 Temple Place - Suite 330, Boston, MA 02111-1307,
// 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 lu_policy.hpp
* Contains policies for list update containers.
*/
#ifndef LU_POLICY_HPP
#define LU_POLICY_HPP
namespace pb_assoc
{
struct move_to_front_lu_metadata
{ };
#define PB_ASSOC_CLASS_T_DEC \
template<typename Metadata_Reference>
#define PB_ASSOC_CLASS_C_DEC \
move_to_front_lu_policy<Metadata_Reference>
template<typename Metadata_Reference =
std::allocator<move_to_front_lu_metadata>::reference>
class move_to_front_lu_policy
{
public:
void
swap(PB_ASSOC_CLASS_C_DEC& r_other);
protected:
typedef move_to_front_lu_metadata metadata_type;
typedef Metadata_Reference metadata_reference;
metadata_type
operator()() const;
inline bool
operator()(metadata_reference r_data) const;
};
#include <ext/pb_assoc/detail/lu_policy/mtf_lu_policy_imp.hpp>
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
template<typename Size_Type>
class counter_lu_policy_base;
template<typename Size_Type = size_t>
class counter_lu_metadata
{
public:
typedef Size_Type size_type;
private:
counter_lu_metadata(size_type init_count) : m_count(init_count)
{ }
mutable size_type m_count;
friend class counter_lu_policy_base<Size_Type>;
};
template<typename Size_Type>
class counter_lu_policy_base;
#define PB_ASSOC_CLASS_T_DEC \
template<typename Size_Type>
#define PB_ASSOC_CLASS_C_DEC \
counter_lu_policy_base<Size_Type>
template<typename Size_Type>
class counter_lu_policy_base
{
protected:
typedef Size_Type size_type;
counter_lu_metadata<Size_Type>
operator()(size_type max_size) const;
template<typename Metadata_Reference>
bool
operator()(Metadata_Reference r_data, size_type m_max_count) const;
};
#include <ext/pb_assoc/detail/lu_policy/counter_lu_metadata_imp.hpp>
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
#define PB_ASSOC_CLASS_T_DEC \
template<typename Size_Type, typename Metadata_Reference>
#define PB_ASSOC_CLASS_C_DEC \
counter_lu_policy<Size_Type, Metadata_Reference>
template<typename Size_Type = size_t,
typename Metadata_Reference =
typename std::allocator<counter_lu_metadata<Size_Type> >::reference>
class counter_lu_policy : private counter_lu_policy_base<Size_Type>
{
public:
typedef Size_Type size_type;
counter_lu_policy(size_type max_count = 5);
void
swap(PB_ASSOC_CLASS_C_DEC& r_other);
inline
size_type
get_max_count() const;
protected:
typedef counter_lu_metadata< Size_Type> metadata_type;
typedef Metadata_Reference metadata_reference;
metadata_type
operator()() const;
bool
operator()(metadata_reference r_data) const;
private:
typedef counter_lu_policy_base< Size_Type> my_base;
size_type m_max_count;
};
#include <ext/pb_assoc/detail/lu_policy/counter_lu_policy_imp.hpp>
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
} // namespace pb_assoc
#endif // #ifndef LU_POLICY_HPP
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