// -*- C++ -*- // Copyright (C) 2005, 2006, 2007, 2009 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 3, 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. // Under Section 7 of GPL version 3, you are granted additional // permissions described in the GCC Runtime Library Exception, version // 3.1, as published by the Free Software Foundation. // You should have received a copy of the GNU General Public License and // a copy of the GCC Runtime Library Exception along with this program; // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see // <http://www.gnu.org/licenses/>. // 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 <tr1/functional> namespace __gnu_pbds { namespace detail { template<typename Key> struct default_hash_fn { typedef std::tr1::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 __gnu_pbds::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 __gnu_pbds::direct_mask_range_hashing<size_type> default_fn; typedef is_same<default_fn, Comb_Hash_Fn> same_type; typedef __gnu_pbds::hash_exponential_size_policy<size_type> iftrue; typedef __gnu_pbds::hash_prime_size_policy iffalse; typedef __conditional_type<same_type::value, iftrue, iffalse> cond_type; typedef typename cond_type::__type size_policy_type; typedef __gnu_pbds::hash_load_check_resize_trigger<false, size_type> trigger; public: typedef __gnu_pbds::hash_standard_resize_policy<size_policy_type, trigger, false, size_type> type; }; struct default_update_policy { typedef __gnu_pbds::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; typedef __gnu_pbds::direct_mask_range_hashing<size_type> default_fn; typedef is_same<default_fn, Comb_Probe_Fn> same_type; typedef __gnu_pbds::linear_probe_fn<size_type> iftrue; typedef __gnu_pbds::quadratic_probe_fn<size_type> iffalse; typedef __conditional_type<same_type::value, iftrue, iffalse> cond_type; public: typedef typename cond_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> > > { private: typedef std::basic_string<Char, Char_Traits, std::allocator<char> > string_type; public: typedef __gnu_pbds::string_trie_e_access_traits<string_type> type; }; } // namespace detail } // namespace __gnu_pbds #endif // #ifndef PB_DS_STANDARD_POLICIES_HPP