Edit File: synth_e_access_traits.hpp
// -*- C++ -*- // Copyright (C) 2005, 2006, 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 synth_e_access_traits.hpp * Contains an implementation class for a patricia tree. */ #ifndef PB_DS_SYNTH_E_ACCESS_TRAITS_HPP #define PB_DS_SYNTH_E_ACCESS_TRAITS_HPP #include <ext/pb_ds/detail/type_utils.hpp> namespace __gnu_pbds { namespace detail { #define PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC \ template<typename Type_Traits, bool Set, class E_Access_Traits> #define PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC \ synth_e_access_traits< \ Type_Traits, \ Set, \ E_Access_Traits> template<typename Type_Traits, bool Set, class E_Access_Traits> struct synth_e_access_traits : public E_Access_Traits { private: typedef E_Access_Traits base_type; typedef Type_Traits type_traits; typedef typename type_traits::const_key_reference const_key_reference; typedef typename type_traits::const_reference const_reference; public: synth_e_access_traits(); synth_e_access_traits(const E_Access_Traits& r_traits); inline bool equal_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after = true) const; bool equal_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const; bool cmp_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after = false) const; bool cmp_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const; inline static const_key_reference extract_key(const_reference r_val); #ifdef _GLIBCXX_DEBUG bool operator()(const_key_reference r_lhs, const_key_reference r_rhs); #endif private: inline static const_key_reference extract_key(const_reference r_val, true_type); inline static const_key_reference extract_key(const_reference r_val, false_type); private: static integral_constant<int,Set> s_set_ind; }; PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC integral_constant<int,Set> PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::s_set_ind; PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: synth_e_access_traits() { } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: synth_e_access_traits(const E_Access_Traits& r_traits) : E_Access_Traits(r_traits) { } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC inline bool PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: equal_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after /*= false */) const { while (b_l != e_l) { if (b_r == e_r) return (false); if (base_type::e_pos(*b_l) != base_type::e_pos(*b_r)) return (false); ++b_l; ++b_r; } return (!compare_after || b_r == e_r); } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC bool PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: equal_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const { return (equal_prefixes(base_type::begin(r_lhs_key), base_type::end(r_lhs_key), base_type::begin(r_rhs_key), base_type::end(r_rhs_key), true)); } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC bool PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: cmp_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after /* = false*/) const { while (b_l != e_l) { if (b_r == e_r) return (false); const typename base_type::size_type l_pos = base_type::e_pos(*b_l); const typename base_type::size_type r_pos = base_type::e_pos(*b_r); if (l_pos != r_pos) return (l_pos < r_pos); ++b_l; ++b_r; } if (!compare_after) return (false); return (b_r != e_r); } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC bool PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: cmp_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const { return (cmp_prefixes(base_type::begin(r_lhs_key), base_type::end(r_lhs_key), base_type::begin(r_rhs_key), base_type::end(r_rhs_key), true)); } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: extract_key(const_reference r_val) { return (extract_key(r_val, s_set_ind)); } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: extract_key(const_reference r_val, true_type) { return (r_val); } PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: extract_key(const_reference r_val, false_type) { return (r_val.first); } #ifdef _GLIBCXX_DEBUG PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC bool PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC:: operator()(const_key_reference r_lhs, const_key_reference r_rhs) { return (cmp_keys(r_lhs, r_rhs)); } #endif #undef PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC #undef PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC } // namespace detail } // namespace __gnu_pbds #endif
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