104 lines
2.7 KiB
C++
104 lines
2.7 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<double> unity{1.0};
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int i_ = 42;
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term<int &&> i{std::move(i_)};
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yap::expression<
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yap::expr_kind::minus,
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bh::tuple<ref<term<double> &>, term<int &&>>>
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expr = unity - std::move(i);
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yap::expression<
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yap::expr_kind::plus,
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bh::tuple<
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ref<term<double> &>,
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yap::expression<
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yap::expr_kind::minus,
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bh::tuple<ref<term<double> &>, term<int &&>>>>>
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unevaluated_expr_1 = unity + std::move(expr);
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yap::expression<
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yap::expr_kind::plus,
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bh::tuple<ref<term<double> &>, ref<term<double> &>>>
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unevaluated_expr_2 = unity + unity;
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term<double> const const_unity{1.0};
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yap::expression<
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yap::expr_kind::plus,
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bh::tuple<ref<term<double> &>, ref<term<double> const &>>>
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unevaluated_expr_3 = unity + const_unity;
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{
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double result = evaluate(unity);
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BOOST_CHECK(result == 1);
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}
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{
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double result = evaluate(expr);
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BOOST_CHECK(result == -41);
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}
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{
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double result = evaluate(unevaluated_expr_1);
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BOOST_CHECK(result == -40);
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}
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{
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double result = evaluate(unevaluated_expr_2);
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BOOST_CHECK(result == 2);
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}
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{
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double result = evaluate(unevaluated_expr_3);
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BOOST_CHECK(result == 2);
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}
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{
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double result = evaluate(unity, 5, 6, 7);
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BOOST_CHECK(result == 1);
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}
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{
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double result = evaluate(expr);
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BOOST_CHECK(result == -41);
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}
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{
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double result = evaluate(unevaluated_expr_1, std::string("15"));
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BOOST_CHECK(result == -40);
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}
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{
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double result = evaluate(unevaluated_expr_2, std::string("15"));
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BOOST_CHECK(result == 2);
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}
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{
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double result = evaluate(unevaluated_expr_3, std::string("15"));
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BOOST_CHECK(result == 2);
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}
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}
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return 0;
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}
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