| // -*- C++ -*- |
| |
| // Copyright (C) 2005-2022 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 erase_if_fn.hpp |
| * Contains traits for a random regression test |
| * for a specific container type. |
| */ |
| |
| #ifndef PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP |
| #define PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP |
| |
| #include <functional> |
| |
| namespace __gnu_pbds |
| { |
| namespace test |
| { |
| namespace detail |
| { |
| template<typename T> |
| struct regression_test_erase_if_fn |
| { |
| private: |
| typedef const T& const_reference; |
| |
| public: |
| typedef bool result_type; |
| typedef T argument_type; |
| |
| bool |
| operator()(const_reference r_t) const |
| { |
| return (r_t.length() == 0 || |
| static_cast<size_t>(*((r_t).begin())) % 2 == 1); |
| } |
| }; |
| |
| template<typename Hd, class Tl> |
| struct regression_test_erase_if_fn<std::pair<Hd, Tl> > |
| { |
| private: |
| typedef const std::pair<Hd, Tl>& const_reference; |
| typedef regression_test_erase_if_fn<Hd> hd_erase_if_fn; |
| typedef regression_test_erase_if_fn<Tl> tl_erase_if_fn; |
| |
| public: |
| typedef bool result_type; |
| typedef std::pair<Hd, Tl> argument_type; |
| |
| bool |
| operator()(const_reference r_t) const |
| { |
| return (hd_erase_if_fn()(r_t.first) && tl_erase_if_fn()(r_t.second)); |
| } |
| }; |
| } // namespace detail |
| } // namespace test |
| } // namespace __gnu_pbds |
| |
| #endif |