1// -*- C++ -*- 2 3// Copyright (C) 2005, 2006, 2009 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the terms 7// of the GNU General Public License as published by the Free Software 8// Foundation; either version 3, or (at your option) any later 9// version. 10 11// This library is distributed in the hope that it will be useful, but 12// WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14// General Public License for more details. 15 16// You should have received a copy of the GNU General Public License 17// along with this library; see the file COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20 21// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 22 23// Permission to use, copy, modify, sell, and distribute this software 24// is hereby granted without fee, provided that the above copyright 25// notice appears in all copies, and that both that copyright notice 26// and this permission notice appear in supporting documentation. None 27// of the above authors, nor IBM Haifa Research Laboratories, make any 28// representation about the suitability of this software for any 29// purpose. It is provided "as is" without express or implied 30// warranty. 31 32/** 33 * @file erase_if_fn.hpp 34 * Contains traits for a random regression test 35 * for a specific container type. 36 */ 37 38#ifndef PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP 39#define PB_DS_REGRESSION_TEST_ERASE_IF_FN_HPP 40 41#include <functional> 42 43namespace __gnu_pbds 44{ 45 namespace test 46 { 47 namespace detail 48 { 49 template<typename T> 50 struct regression_test_erase_if_fn 51 : public std::unary_function<T, bool> 52 { 53 private: 54 typedef const T& const_reference; 55 56 public: 57 bool 58 operator()(const_reference r_t) const 59 { 60 return (r_t.length() == 0 || 61 static_cast<size_t>(*((r_t).begin())) % 2 == 1); 62 } 63 }; 64 65 template<typename Hd, class Tl> 66 struct regression_test_erase_if_fn<std::pair<Hd, Tl> > 67 : public std::unary_function<std::pair<Hd, Tl>, bool> 68 { 69 private: 70 typedef const std::pair<Hd, Tl>& const_reference; 71 typedef regression_test_erase_if_fn<Hd> hd_erase_if_fn; 72 typedef regression_test_erase_if_fn<Tl> tl_erase_if_fn; 73 74 public: 75 bool 76 operator()(const_reference r_t) const 77 { 78 return (hd_erase_if_fn()(r_t.first) && tl_erase_if_fn()(r_t.second)); 79 } 80 }; 81 } // namespace detail 82 } // namespace test 83} // namespace __gnu_pbds 84 85#endif 86