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// -*- C++ -*-
// Copyright (C) 2005-2019 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
: public std::unary_function<T, bool>
{
private:
typedef const T& const_reference;
public:
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> >
: public std::unary_function<std::pair<Hd, Tl>, bool>
{
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:
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
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