| // -*- C++ -*- |
| |
| // Copyright (C) 2005-2013 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. |
| |
| // You should have received a copy of the GNU General Public License |
| // along with this library; see the file COPYING3. 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 string_ranged_probe_fn.hpp |
| * Contains a ranged string probe function. |
| */ |
| |
| #ifndef PB_DS_STRING_RANGED_PROBE_FN_HPP |
| #define PB_DS_STRING_RANGED_PROBE_FN_HPP |
| |
| #include <string> |
| |
| namespace __gnu_pbds |
| { |
| namespace test |
| { |
| template<typename Comb_Fn, typename Probe_Fn> |
| class string_ranged_probe_fn : public Probe_Fn, public Comb_Fn |
| { |
| private: |
| size_t _M_limit; |
| |
| public: |
| typedef Comb_Fn comb_fn; |
| typedef Probe_Fn probe_fn; |
| typedef detail::comb_hash_fn_string_form<comb_fn> string_form; |
| |
| inline size_t |
| operator()(const std::string& r_str) const |
| { |
| size_t ret = 0; |
| std::string::const_iterator b = r_str.begin(); |
| std::string::const_iterator e = r_str.end(); |
| |
| size_t i = 0; |
| while (i < _M_limit&& b != e) |
| { |
| ret *= 5; |
| ret += static_cast<size_t>(*(b++)); |
| ++i; |
| } |
| return (comb_fn::operator()(ret)); |
| } |
| |
| inline size_t |
| operator()(const std::string&, const size_t hash, size_t i) const |
| { return comb_fn::operator()(hash + probe_fn::operator()(i)); } |
| |
| void |
| swap(string_ranged_probe_fn<Comb_Fn, Probe_Fn>& other) |
| { |
| std::swap(_M_limit, other._M_limit); |
| comb_fn::swap(other); |
| } |
| |
| void |
| notify_resized(size_t new_size) |
| { |
| comb_fn::notify_resized(new_size); |
| _M_limit = dna_str_limit(new_size); |
| } |
| |
| static std::string |
| name() |
| { return ("string_ranged_probe_fn_" + string_form<comb_fn>::name()); } |
| |
| static std::string |
| desc() |
| { return ("string ranged-probe using" + string_form<comb_fn>::desc());} |
| }; |
| } // namespace test |
| } // namespace __gnu_pbds |
| |
| #endif |