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1 | // Copyright (C) 2016-2018 T. Zachary Laine |
2 | // | |
3 | // Distributed under the Boost Software License, Version 1.0. (See | |
4 | // accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt) | |
6 | #include <boost/yap/expression.hpp> | |
7 | ||
8 | #include <boost/mpl/assert.hpp> | |
9 | ||
1e59de90 | 10 | #include <boost/core/lightweight_test.hpp> |
92f5a8d4 TL |
11 | |
12 | ||
13 | template<typename T> | |
14 | using term = boost::yap::terminal<boost::yap::expression, T>; | |
15 | ||
16 | template<typename T> | |
17 | using ref = boost::yap::expression_ref<boost::yap::expression, T>; | |
18 | ||
19 | namespace yap = boost::yap; | |
20 | namespace bh = boost::hana; | |
21 | ||
22 | ||
23 | template<boost::yap::expr_kind Kind, typename Tuple> | |
24 | struct user_expr | |
25 | { | |
26 | static boost::yap::expr_kind const kind = Kind; | |
27 | ||
28 | Tuple elements; | |
29 | }; | |
30 | ||
31 | BOOST_YAP_USER_BINARY_OPERATOR(plus, user_expr, user_expr) | |
32 | ||
33 | template<typename T> | |
34 | using user_term = boost::yap::terminal<user_expr, T>; | |
35 | ||
36 | template<typename T> | |
37 | using user_ref = boost::yap::expression_ref<user_expr, T>; | |
38 | ||
39 | ||
1e59de90 | 40 | int main() |
92f5a8d4 TL |
41 | { |
42 | { | |
43 | term<double> unity = {{1.0}}; | |
44 | using plus_expr_type = yap::expression< | |
45 | yap::expr_kind::plus, | |
46 | bh::tuple<ref<term<double> &>, term<int>>>; | |
47 | ||
48 | { | |
49 | plus_expr_type plus_expr = unity + term<int>{{1}}; | |
50 | BOOST_MPL_ASSERT((std::is_same< | |
51 | decltype(yap::right(std::move(plus_expr))), | |
52 | term<int> &&>)); | |
53 | } | |
54 | ||
55 | { | |
56 | plus_expr_type plus_expr = unity + term<int>{{1}}; | |
57 | BOOST_MPL_ASSERT( | |
58 | (std::is_same<decltype(yap::right(plus_expr)), term<int> &>)); | |
59 | } | |
60 | ||
61 | { | |
62 | plus_expr_type const plus_expr = unity + term<int>{{1}}; | |
63 | BOOST_MPL_ASSERT((std::is_same< | |
64 | decltype(yap::right(plus_expr)), | |
65 | term<int> const &>)); | |
66 | } | |
67 | ||
68 | { | |
69 | term<double> unity = {{1.0}}; | |
70 | using plus_expr_type = yap::expression< | |
71 | yap::expr_kind::plus, | |
72 | bh::tuple<ref<term<double> &>, term<int>>>; | |
73 | plus_expr_type plus_expr = unity + term<int>{{1}}; | |
74 | ||
75 | using plus_plus_expr_type = yap::expression< | |
76 | yap::expr_kind::plus, | |
77 | bh::tuple<ref<plus_expr_type &>, term<int>>>; | |
78 | ||
79 | { | |
80 | plus_plus_expr_type plus_plus_expr = plus_expr + term<int>{{1}}; | |
81 | ref<plus_expr_type &> plus_expr_ref = | |
82 | bh::front(plus_plus_expr.elements); | |
83 | BOOST_MPL_ASSERT( | |
84 | (std::is_same< | |
85 | decltype(yap::right(std::move(plus_expr_ref))), | |
86 | term<int> &>)); | |
87 | } | |
88 | ||
89 | { | |
90 | plus_plus_expr_type plus_plus_expr = plus_expr + term<int>{{1}}; | |
91 | ref<plus_expr_type &> plus_expr_ref = | |
92 | bh::front(plus_plus_expr.elements); | |
93 | BOOST_MPL_ASSERT((std::is_same< | |
94 | decltype(yap::right(plus_expr_ref)), | |
95 | term<int> &>)); | |
96 | } | |
97 | ||
98 | { | |
99 | plus_plus_expr_type plus_plus_expr = plus_expr + term<int>{{1}}; | |
100 | ref<plus_expr_type &> const plus_expr_ref = | |
101 | bh::front(plus_plus_expr.elements); | |
102 | BOOST_MPL_ASSERT((std::is_same< | |
103 | decltype(yap::right(plus_expr_ref)), | |
104 | term<int> &>)); | |
105 | } | |
106 | } | |
107 | ||
108 | { | |
109 | term<double> unity = {{1.0}}; | |
110 | using plus_expr_type = yap::expression< | |
111 | yap::expr_kind::plus, | |
112 | bh::tuple<ref<term<double> &>, term<int>>>; | |
113 | plus_expr_type const plus_expr = unity + term<int>{{1}}; | |
114 | ||
115 | using plus_plus_expr_type = yap::expression< | |
116 | yap::expr_kind::plus, | |
117 | bh::tuple<ref<plus_expr_type const &>, term<int>>>; | |
118 | ||
119 | { | |
120 | plus_plus_expr_type plus_plus_expr = plus_expr + term<int>{{1}}; | |
121 | ref<plus_expr_type const &> plus_expr_ref = | |
122 | bh::front(plus_plus_expr.elements); | |
123 | BOOST_MPL_ASSERT( | |
124 | (std::is_same< | |
125 | decltype(yap::right(std::move(plus_expr_ref))), | |
126 | term<int> const &>)); | |
127 | } | |
128 | ||
129 | { | |
130 | plus_plus_expr_type plus_plus_expr = plus_expr + term<int>{{1}}; | |
131 | ref<plus_expr_type const &> plus_expr_ref = | |
132 | bh::front(plus_plus_expr.elements); | |
133 | BOOST_MPL_ASSERT((std::is_same< | |
134 | decltype(yap::right(plus_expr_ref)), | |
135 | term<int> const &>)); | |
136 | } | |
137 | ||
138 | { | |
139 | plus_plus_expr_type plus_plus_expr = plus_expr + term<int>{{1}}; | |
140 | ref<plus_expr_type const &> const plus_expr_ref = | |
141 | bh::front(plus_plus_expr.elements); | |
142 | BOOST_MPL_ASSERT((std::is_same< | |
143 | decltype(yap::right(plus_expr_ref)), | |
144 | term<int> const &>)); | |
145 | } | |
146 | } | |
147 | } | |
148 | ||
149 | { | |
150 | user_term<double> unity = {{1.0}}; | |
151 | using plus_expr_type = user_expr< | |
152 | yap::expr_kind::plus, | |
153 | bh::tuple<user_ref<user_term<double> &>, user_term<int>>>; | |
154 | ||
155 | { | |
156 | plus_expr_type plus_expr = unity + user_term<int>{{1}}; | |
157 | BOOST_MPL_ASSERT((std::is_same< | |
158 | decltype(yap::right(std::move(plus_expr))), | |
159 | user_term<int> &&>)); | |
160 | } | |
161 | ||
162 | { | |
163 | plus_expr_type plus_expr = unity + user_term<int>{{1}}; | |
164 | BOOST_MPL_ASSERT((std::is_same< | |
165 | decltype(yap::right(plus_expr)), | |
166 | user_term<int> &>)); | |
167 | } | |
168 | ||
169 | { | |
170 | plus_expr_type const plus_expr = unity + user_term<int>{{1}}; | |
171 | BOOST_MPL_ASSERT((std::is_same< | |
172 | decltype(yap::right(plus_expr)), | |
173 | user_term<int> const &>)); | |
174 | } | |
175 | ||
176 | { | |
177 | user_term<double> unity = {{1.0}}; | |
178 | using plus_expr_type = user_expr< | |
179 | yap::expr_kind::plus, | |
180 | bh::tuple<user_ref<user_term<double> &>, user_term<int>>>; | |
181 | plus_expr_type plus_expr = unity + user_term<int>{{1}}; | |
182 | ||
183 | using plus_plus_expr_type = user_expr< | |
184 | yap::expr_kind::plus, | |
185 | bh::tuple<user_ref<plus_expr_type &>, user_term<int>>>; | |
186 | ||
187 | { | |
188 | plus_plus_expr_type plus_plus_expr = | |
189 | plus_expr + user_term<int>{{1}}; | |
190 | user_ref<plus_expr_type &> plus_expr_ref = | |
191 | bh::front(plus_plus_expr.elements); | |
192 | BOOST_MPL_ASSERT( | |
193 | (std::is_same< | |
194 | decltype(yap::right(std::move(plus_expr_ref))), | |
195 | user_term<int> &>)); | |
196 | } | |
197 | ||
198 | { | |
199 | plus_plus_expr_type plus_plus_expr = | |
200 | plus_expr + user_term<int>{{1}}; | |
201 | user_ref<plus_expr_type &> plus_expr_ref = | |
202 | bh::front(plus_plus_expr.elements); | |
203 | BOOST_MPL_ASSERT((std::is_same< | |
204 | decltype(yap::right(plus_expr_ref)), | |
205 | user_term<int> &>)); | |
206 | } | |
207 | ||
208 | { | |
209 | plus_plus_expr_type plus_plus_expr = | |
210 | plus_expr + user_term<int>{{1}}; | |
211 | user_ref<plus_expr_type &> const plus_expr_ref = | |
212 | bh::front(plus_plus_expr.elements); | |
213 | BOOST_MPL_ASSERT((std::is_same< | |
214 | decltype(yap::right(plus_expr_ref)), | |
215 | user_term<int> &>)); | |
216 | } | |
217 | } | |
218 | ||
219 | { | |
220 | user_term<double> unity = {{1.0}}; | |
221 | using plus_expr_type = user_expr< | |
222 | yap::expr_kind::plus, | |
223 | bh::tuple<user_ref<user_term<double> &>, user_term<int>>>; | |
224 | plus_expr_type const plus_expr = unity + user_term<int>{{1}}; | |
225 | ||
226 | using plus_plus_expr_type = user_expr< | |
227 | yap::expr_kind::plus, | |
228 | bh::tuple<user_ref<plus_expr_type const &>, user_term<int>>>; | |
229 | ||
230 | { | |
231 | plus_plus_expr_type plus_plus_expr = | |
232 | plus_expr + user_term<int>{{1}}; | |
233 | user_ref<plus_expr_type const &> plus_expr_ref = | |
234 | bh::front(plus_plus_expr.elements); | |
235 | BOOST_MPL_ASSERT( | |
236 | (std::is_same< | |
237 | decltype(yap::right(std::move(plus_expr_ref))), | |
238 | user_term<int> const &>)); | |
239 | } | |
240 | ||
241 | { | |
242 | plus_plus_expr_type plus_plus_expr = | |
243 | plus_expr + user_term<int>{{1}}; | |
244 | user_ref<plus_expr_type const &> plus_expr_ref = | |
245 | bh::front(plus_plus_expr.elements); | |
246 | BOOST_MPL_ASSERT((std::is_same< | |
247 | decltype(yap::right(plus_expr_ref)), | |
248 | user_term<int> const &>)); | |
249 | } | |
250 | ||
251 | { | |
252 | plus_plus_expr_type plus_plus_expr = | |
253 | plus_expr + user_term<int>{{1}}; | |
254 | user_ref<plus_expr_type const &> const plus_expr_ref = | |
255 | bh::front(plus_plus_expr.elements); | |
256 | BOOST_MPL_ASSERT((std::is_same< | |
257 | decltype(yap::right(plus_expr_ref)), | |
258 | user_term<int> const &>)); | |
259 | } | |
260 | } | |
261 | } | |
262 | ||
f67539c2 TL |
263 | #ifndef _MSC_VER // Tsk, tsk. |
264 | { | |
265 | using term_t = term<int>; | |
266 | constexpr auto expr = term_t{13} + term_t{42}; | |
267 | constexpr auto result1 = expr.right().value(); | |
268 | constexpr auto result2 = yap::value(right(expr)); | |
269 | (void)result1; | |
270 | (void)result2; | |
271 | } | |
272 | #endif | |
273 | ||
1e59de90 | 274 | return boost::report_errors(); |
92f5a8d4 | 275 | } |