// -*- C++ -*- // Copyright (C) 2005-2018 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 // . // 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 branch_policy/branch_policy.hpp * Contains a base class for branch policies. */ #ifndef PB_DS_BRANCH_POLICY_BASE_HPP #define PB_DS_BRANCH_POLICY_BASE_HPP #include namespace __gnu_pbds { namespace detail { /// Primary template, base class for branch structure policies. template struct branch_policy { protected: typedef typename Node_Itr::value_type it_type; typedef typename std::iterator_traits::value_type value_type; typedef typename value_type::first_type key_type; typedef typename remove_const::type rcvalue_type; typedef typename remove_const::type rckey_type; typedef typename _Alloc::template rebind::other rebind_v; typedef typename _Alloc::template rebind::other rebind_k; typedef typename rebind_v::reference reference; typedef typename rebind_v::const_reference const_reference; typedef typename rebind_v::const_pointer const_pointer; typedef typename rebind_k::const_reference key_const_reference; static inline key_const_reference extract_key(const_reference r_val) { return r_val.first; } virtual it_type end() = 0; it_type end_iterator() const { return const_cast(this)->end(); } virtual ~branch_policy() { } }; /// Specialization for const iterators. template struct branch_policy { protected: typedef typename Node_CItr::value_type it_type; typedef typename std::iterator_traits::value_type value_type; typedef typename remove_const::type rcvalue_type; typedef typename _Alloc::template rebind::other rebind_v; typedef typename rebind_v::reference reference; typedef typename rebind_v::const_reference const_reference; typedef typename rebind_v::const_pointer const_pointer; typedef value_type key_type; typedef typename rebind_v::const_reference key_const_reference; static inline key_const_reference extract_key(const_reference r_val) { return r_val; } virtual it_type end() const = 0; it_type end_iterator() const { return end(); } virtual ~branch_policy() { } }; } // namespace detail } // namespace __gnu_pbds #endif // #ifndef PB_DS_BRANCH_POLICY_BASE_HPP