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- // Copyright (C) 2016-2018 T. Zachary Laine
- //
- // 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/yap/expression.hpp>
- #include <boost/test/minimal.hpp>
- template<typename T>
- using term = boost::yap::terminal<boost::yap::expression, T>;
- template<typename T>
- using ref = boost::yap::expression_ref<boost::yap::expression, T>;
- namespace yap = boost::yap;
- namespace bh = boost::hana;
- int test_main(int, char * [])
- {
- {
- term<int> number = {{42}};
- auto fn = yap::make_expression_function(number);
- auto fn_copy = fn;
- BOOST_CHECK(fn() == 42);
- BOOST_CHECK(fn_copy() == 42);
- yap::value(number) = 21;
- BOOST_CHECK(fn() == 21);
- BOOST_CHECK(fn_copy() == 21);
- }
- {
- term<int> number = {{42}};
- auto fn = yap::make_expression_function(std::move(number));
- auto fn_copy = fn;
- BOOST_CHECK(fn() == 42);
- BOOST_CHECK(fn_copy() == 42);
- yap::value(number) = 21;
- BOOST_CHECK(fn() == 42);
- BOOST_CHECK(fn_copy() == 42);
- }
- {
- term<std::unique_ptr<int>> number = {
- {std::unique_ptr<int>(new int(42))}};
- auto fn = yap::make_expression_function(std::move(number));
- BOOST_CHECK(*fn() == 42);
- auto fn_2 = std::move(fn);
- BOOST_CHECK(*fn_2() == 42);
- yap::value(number) = std::unique_ptr<int>(new int(21));
- BOOST_CHECK(*fn_2() == 42);
- }
- return 0;
- }
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