71 lines
1.5 KiB
C++
71 lines
1.5 KiB
C++
// Copyright (C) 2016-2018 T. Zachary Laine
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//
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/yap/expression.hpp>
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#include <boost/test/minimal.hpp>
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template<typename T>
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using term = boost::yap::terminal<boost::yap::expression, T>;
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template<typename T>
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using ref = boost::yap::expression_ref<boost::yap::expression, T>;
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namespace yap = boost::yap;
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namespace bh = boost::hana;
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int test_main(int, char * [])
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{
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{
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term<int> number = {{42}};
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auto fn = yap::make_expression_function(number);
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auto fn_copy = fn;
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BOOST_CHECK(fn() == 42);
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BOOST_CHECK(fn_copy() == 42);
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yap::value(number) = 21;
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BOOST_CHECK(fn() == 21);
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BOOST_CHECK(fn_copy() == 21);
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}
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{
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term<int> number = {{42}};
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auto fn = yap::make_expression_function(std::move(number));
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auto fn_copy = fn;
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BOOST_CHECK(fn() == 42);
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BOOST_CHECK(fn_copy() == 42);
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yap::value(number) = 21;
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BOOST_CHECK(fn() == 42);
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BOOST_CHECK(fn_copy() == 42);
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}
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{
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term<std::unique_ptr<int>> number = {
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{std::unique_ptr<int>(new int(42))}};
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auto fn = yap::make_expression_function(std::move(number));
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BOOST_CHECK(*fn() == 42);
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auto fn_2 = std::move(fn);
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BOOST_CHECK(*fn_2() == 42);
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yap::value(number) = std::unique_ptr<int>(new int(21));
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BOOST_CHECK(*fn_2() == 42);
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}
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return 0;
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}
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