rotate.cpp
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/*=============================================================================
Copyright (c) 2017 Paul Fultz II
rotate.cpp
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/hof/rotate.hpp>
#include <boost/hof/placeholders.hpp>
#include <boost/hof/compose.hpp>
#include <boost/hof/repeat.hpp>
#include "test.hpp"
struct head
{
template<class T, class... Ts>
constexpr T operator()(T x, Ts&&...) const
BOOST_HOF_RETURNS_DEDUCE_NOEXCEPT(x)
{
return x;
}
};
#if BOOST_HOF_HAS_NOEXCEPT_DEDUCTION
BOOST_HOF_TEST_CASE()
{
static_assert(noexcept(boost::hof::rotate(head{})(1, 2, 3, 4)), "noexcept rotate");
static_assert(noexcept(boost::hof::repeat(std::integral_constant<int, 5>{})(boost::hof::rotate)(head{})(1, 2, 3, 4, 5, 6, 7, 8, 9)), "noexcept rotate");
}
#endif
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_TEST_CHECK(2 == boost::hof::rotate(head{})(1, 2, 3, 4));
BOOST_HOF_STATIC_TEST_CHECK(2 == boost::hof::rotate(head{})(1, 2, 3, 4));
}
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_TEST_CHECK(3 == boost::hof::compose(boost::hof::rotate, boost::hof::rotate)(head{})(1, 2, 3, 4));
BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::compose(boost::hof::rotate, boost::hof::rotate)(head{})(1, 2, 3, 4));
}
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_TEST_CHECK(6 == boost::hof::repeat(std::integral_constant<int, 5>{})(boost::hof::rotate)(head{})(1, 2, 3, 4, 5, 6, 7, 8, 9));
BOOST_HOF_STATIC_TEST_CHECK(6 == boost::hof::repeat(std::integral_constant<int, 5>{})(boost::hof::rotate)(head{})(1, 2, 3, 4, 5, 6, 7, 8, 9));
}
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_TEST_CHECK(3 == boost::hof::rotate(boost::hof::_ - boost::hof::_)(2, 5));
BOOST_HOF_STATIC_TEST_CHECK(3 == boost::hof::rotate(boost::hof::_ - boost::hof::_)(2, 5));
}
#if defined(__GNUC__) && !defined (__clang__) && __GNUC__ == 4 && __GNUC_MINOR__ < 7
#define FINAL
#else
#define FINAL final
#endif
struct f FINAL {
int operator()(int i, void *) const {
return i;
}
};
BOOST_HOF_TEST_CASE()
{
BOOST_HOF_TEST_CHECK(boost::hof::rotate(f())(nullptr, 2) == 2);
}