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// Copyright 2015 Peter Dimov.
//
// Distributed under the Boost Software License, Version 1.0.
//
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
#include <boost/mp11/detail/config.hpp>
#if BOOST_MP11_MSVC
# pragma warning( disable: 4503 ) // decorated name length exceeded
#endif
#include <boost/mp11/algorithm.hpp>
#include <boost/mp11/list.hpp>
#include <boost/mp11/integral.hpp>
#include <boost/core/lightweight_test_trait.hpp>
#include <type_traits>
#include <tuple>
#include <utility>
struct X1 {};
using boost::mp11::mp_bool;
template<class T> using is_even = mp_bool< T::value % 2 == 0 >;
int main()
{
using boost::mp11::mp_list;
using boost::mp11::mp_count_if;
using boost::mp11::mp_size_t;
{
using L1 = mp_list<>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L1, std::is_const>, mp_size_t<0>>));
using L2 = mp_list<X1, X1 const, X1*, X1 const, X1*, X1*>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_volatile>, mp_size_t<0>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_const>, mp_size_t<2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_pointer>, mp_size_t<3>>));
}
{
using L1 = std::tuple<>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L1, std::is_const>, mp_size_t<0>>));
using L2 = std::tuple<X1, X1 const, X1*, X1 const, X1*, X1*>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_volatile>, mp_size_t<0>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_const>, mp_size_t<2>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_pointer>, mp_size_t<3>>));
}
{
using L2 = std::pair<X1 const, X1*>;
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_volatile>, mp_size_t<0>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_const>, mp_size_t<1>>));
BOOST_TEST_TRAIT_TRUE((std::is_same<mp_count_if<L2, std::is_pointer>, mp_size_t<1>>));
}
{
using boost::mp11::mp_iota_c;
int const N = 1089;
using L = mp_iota_c<N>;
using R = mp_count_if<L, is_even>;
BOOST_TEST_TRAIT_TRUE((std::is_same<R, mp_size_t<(N + 1) / 2>>));
}
return boost::report_errors();
}
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