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- /*=============================================================================
- Copyright (c) 2017 Paul Fultz II
- apply_eval.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/apply_eval.hpp>
- #include <boost/hof/always.hpp>
- #include <boost/hof/placeholders.hpp>
- #include "test.hpp"
- #include <memory>
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_STATIC_TEST_CHECK(boost::hof::apply_eval(binary_class(), boost::hof::always(1), boost::hof::always(2)) == 3);
- BOOST_HOF_TEST_CHECK(boost::hof::apply_eval(binary_class(), []{ return 1; }, []{ return 2;}) == 3);
- }
- BOOST_HOF_TEST_CASE()
- {
- boost::hof::apply_eval(boost::hof::always(), boost::hof::always(1), boost::hof::always(2));
- }
- #if BOOST_HOF_HAS_NOEXCEPT_DEDUCTION
- BOOST_HOF_TEST_CASE()
- {
- static_assert(noexcept(boost::hof::apply_eval(boost::hof::always(), boost::hof::always(1), boost::hof::always(2))), "noexcept apply_eval");
- }
- #endif
- BOOST_HOF_TEST_CASE()
- {
- int i = 3;
- BOOST_HOF_TEST_CHECK(boost::hof::apply_eval(boost::hof::_ - boost::hof::_, [&]{ return i++; }, [&]{ return i++;}) == -1);
- BOOST_HOF_TEST_CHECK(boost::hof::apply_eval(boost::hof::_ - boost::hof::_, [&]{ return ++i; }, [&]{ return ++i;}) == -1);
- }
- struct indirect_sum_f
- {
- template<class T, class U>
- auto operator()(T x, U y) const
- BOOST_HOF_RETURNS(*x + *y);
- };
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(
- boost::hof::apply_eval(
- indirect_sum_f(),
- []{ return std::unique_ptr<int>(new int(1)); },
- []{ return std::unique_ptr<int>(new int(2)); })
- == 3);
- }
- std::unique_ptr<int> moveable(int i)
- {
- return std::unique_ptr<int>{new int(i)};
- }
- BOOST_HOF_TEST_CASE()
- {
- BOOST_HOF_TEST_CHECK(*boost::hof::apply_eval(&moveable, boost::hof::always(1)) == 1);
- BOOST_HOF_TEST_CHECK(*boost::hof::apply_eval(&moveable, boost::hof::always(3)) == 3);
- }
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