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// -*- C++ -*-
// Copyright (C) 2005, 2006 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 standard_policies.hpp
* Contains standard policies for containers.
*/
#ifndef PB_DS_STANDARD_POLICIES_HPP
#define PB_DS_STANDARD_POLICIES_HPP
#include <memory>
#include <ext/pb_ds/hash_policy.hpp>
#include <ext/pb_ds/list_update_policy.hpp>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp>
#include <ext/pb_ds/trie_policy.hpp>
#include <ext/pb_ds/tag_and_trait.hpp>
#include <ext/hash_map>
namespace pb_ds
{
namespace detail
{
template<typename Key>
struct default_hash_fn
{
typedef __gnu_cxx::hash< Key> type;
};
template<typename Key>
struct default_eq_fn
{
typedef std::equal_to< Key> type;
};
enum
{
default_store_hash = false
};
struct default_comb_hash_fn
{
typedef pb_ds::direct_mask_range_hashing<> type;
};
template<typename Comb_Hash_Fn>
struct default_resize_policy
{
private:
typedef typename Comb_Hash_Fn::size_type size_type;
typedef
typename conditional_type<
is_same<
pb_ds::direct_mask_range_hashing<
size_type>,
Comb_Hash_Fn>::value,
pb_ds::hash_exponential_size_policy<
size_type>,
pb_ds::hash_prime_size_policy>::type
size_policy_type;
public:
typedef
pb_ds::hash_standard_resize_policy<
size_policy_type,
pb_ds::hash_load_check_resize_trigger<
false,
size_type>,
false,
size_type>
type;
};
struct default_update_policy
{
typedef pb_ds::move_to_front_lu_policy<> type;
};
template<typename Comb_Probe_Fn>
struct default_probe_fn
{
private:
typedef typename Comb_Probe_Fn::size_type size_type;
public:
typedef
typename conditional_type<
is_same<
pb_ds::direct_mask_range_hashing<size_t>,
Comb_Probe_Fn>::value,
pb_ds::linear_probe_fn<
size_type>,
pb_ds::quadratic_probe_fn<
size_type> >::type
type;
};
template<typename Key>
struct default_trie_e_access_traits;
template<typename Char, class Char_Traits>
struct default_trie_e_access_traits<
std::basic_string<
Char,
Char_Traits,
std::allocator<
char> > >
{
typedef
pb_ds::string_trie_e_access_traits<
std::basic_string<
Char,
Char_Traits,
std::allocator<
char> > >
type;
};
} // namespace detail
} // namespace pb_ds
#endif // #ifndef PB_DS_STANDARD_POLICIES_HPP
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