projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| b32b8144 | 1 | // Copyright Louis Dionne 2013-2017 |
| 7c673cae FG |
2 | // Distributed under the Boost Software License, Version 1.0. |
| 3 | // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt) | |
| 4 | ||
| 5 | #include <boost/hana/assert.hpp> | |
| 6 | #include <boost/hana/functional/placeholder.hpp> | |
| 7 | ||
| 8 | #include <utility> | |
| 9 | namespace hana = boost::hana; | |
| 10 | using hana::_; | |
| 11 | ||
| 12 | ||
| 13 | struct extra_t { virtual ~extra_t() { } }; | |
| 14 | extra_t extra{}; | |
| 15 | ||
| 16 | constexpr struct { } invalid{}; | |
| 17 | ||
| 18 | template <typename ...> using bool_t = bool; | |
| 19 | constexpr bool valid_call(...) { return false; } | |
| 20 | template <typename F, typename ...Args> | |
| 21 | constexpr auto valid_call(F&& f, Args&& ...args) | |
| 22 | -> bool_t<decltype(std::forward<F>(f)(std::forward<Args>(args)...))> | |
| 23 | { return true; } | |
| 24 | ||
| 25 | #define BOOST_HANA_TEST_BINARY_OP(op, x, y) \ | |
| 26 | static_assert((_ op _)(x, y) == (x op y), ""); \ | |
| 27 | BOOST_HANA_RUNTIME_CHECK((_ op _)(x, y, extra) == (x op y)); \ | |
| 28 | BOOST_HANA_RUNTIME_CHECK((_ op _)(x, y, extra, extra) == (x op y)); \ | |
| 29 | static_assert(!valid_call(_ op _), ""); \ | |
| 30 | static_assert(!valid_call(_ op _, invalid), ""); \ | |
| 31 | static_assert(!valid_call(_ op _, invalid, invalid), ""); \ | |
| 32 | \ | |
| 33 | static_assert((_ op y)(x) == (x op y), ""); \ | |
| 34 | BOOST_HANA_RUNTIME_CHECK((_ op y)(x, extra) == (x op y)); \ | |
| 35 | BOOST_HANA_RUNTIME_CHECK((_ op y)(x, extra, extra) == (x op y)); \ | |
| 36 | static_assert(!valid_call(_ op y), ""); \ | |
| 37 | static_assert(!valid_call(_ op y, invalid), ""); \ | |
| 38 | \ | |
| 39 | static_assert((x op _)(y) == (x op y), ""); \ | |
| 40 | BOOST_HANA_RUNTIME_CHECK((x op _)(y, extra) == (x op y)); \ | |
| 41 | BOOST_HANA_RUNTIME_CHECK((x op _)(y, extra, extra) == (x op y)); \ | |
| 42 | static_assert(!valid_call(x op _), ""); \ | |
| 43 | static_assert(!valid_call(x op _, invalid), ""); \ | |
| 44 | static_assert(!valid_call(x op _, invalid), ""); \ | |
| 45 | /**/ | |
| 46 | ||
| 47 | #define BOOST_HANA_TEST_UNARY_OP(op, x) \ | |
| 48 | static_assert((op _)(x) == (op x), ""); \ | |
| 49 | BOOST_HANA_RUNTIME_CHECK((op _)(x, extra) == (op x)); \ | |
| 50 | BOOST_HANA_RUNTIME_CHECK((op _)(x, extra, extra) == (op x)); \ | |
| 51 | static_assert(!valid_call(op _), ""); \ | |
| 52 | static_assert(!valid_call(op _, invalid), ""); \ | |
| 53 | /**/ | |
| 54 | ||
| 55 | struct incr_t { | |
| 56 | template <typename X> | |
| 57 | constexpr auto operator()(X x) const -> decltype(x + 1) | |
| 58 | { return x + 1; } | |
| 59 | }; | |
| 60 | constexpr incr_t incr{}; | |
| 61 | ||
| 62 | int main() { | |
| 63 | // Arithmetic | |
| 64 | BOOST_HANA_TEST_UNARY_OP(+, 1) | |
| 65 | BOOST_HANA_TEST_UNARY_OP(-, 1) | |
| 66 | BOOST_HANA_TEST_BINARY_OP(+, 6, 3) | |
| 67 | BOOST_HANA_TEST_BINARY_OP(-, 6, 3) | |
| 68 | BOOST_HANA_TEST_BINARY_OP(*, 6, 3) | |
| 69 | BOOST_HANA_TEST_BINARY_OP(/, 6, 3) | |
| 70 | BOOST_HANA_TEST_BINARY_OP(%, 6, 3) | |
| 71 | ||
| 72 | // Bitwise | |
| 73 | BOOST_HANA_TEST_UNARY_OP(~, 5) | |
| 74 | BOOST_HANA_TEST_BINARY_OP(&, 6, 3) | |
| 75 | BOOST_HANA_TEST_BINARY_OP(|, 6, 3) | |
| 76 | BOOST_HANA_TEST_BINARY_OP(^, 6, 3) | |
| 77 | BOOST_HANA_TEST_BINARY_OP(<<, 6, 3) | |
| 78 | BOOST_HANA_TEST_BINARY_OP(>>, 6, 3) | |
| 79 | ||
| 80 | // Comparison | |
| 81 | BOOST_HANA_TEST_BINARY_OP(==, 6, 3) | |
| 82 | BOOST_HANA_TEST_BINARY_OP(!=, 6, 3) | |
| 83 | BOOST_HANA_TEST_BINARY_OP(<, 6, 3) | |
| 84 | BOOST_HANA_TEST_BINARY_OP(<=, 6, 3) | |
| 85 | BOOST_HANA_TEST_BINARY_OP(>, 6, 3) | |
| 86 | BOOST_HANA_TEST_BINARY_OP(>=, 6, 3) | |
| 87 | ||
| 88 | // Logical | |
| 89 | BOOST_HANA_TEST_BINARY_OP(||, true, false) | |
| 90 | BOOST_HANA_TEST_BINARY_OP(&&, true, true) | |
| 91 | BOOST_HANA_TEST_UNARY_OP(!, true) | |
| 92 | ||
| 93 | // Member access | |
| 94 | constexpr int i = 4; | |
| 95 | constexpr int array[] = {0, 1, 2}; | |
| 96 | BOOST_HANA_TEST_UNARY_OP(*, &i) | |
| 97 | ||
| 98 | static_assert(_[0](array) == array[0], ""); | |
| 99 | BOOST_HANA_RUNTIME_CHECK(_[0](array, extra) == array[0]); | |
| 100 | BOOST_HANA_RUNTIME_CHECK(_[0](array, extra, extra) == array[0]); | |
| 101 | static_assert(_[1](array) == array[1], ""); | |
| 102 | static_assert(_[1](array) == array[1], ""); | |
| 103 | static_assert(_[2](array) == array[2], ""); | |
| 104 | static_assert(!valid_call(_[invalid]), ""); | |
| 105 | static_assert(!valid_call(_[invalid], array), ""); | |
| 106 | static_assert(!valid_call(_[invalid], invalid), ""); | |
| 107 | static_assert(!valid_call(_[0], invalid), ""); | |
| 108 | ||
| 109 | // Call operator | |
| 110 | static_assert(_(1)(incr) == incr(1), ""); | |
| 111 | BOOST_HANA_RUNTIME_CHECK(_(1)(incr, extra) == incr(1)); | |
| 112 | BOOST_HANA_RUNTIME_CHECK(_(1)(incr, extra, extra) == incr(1)); | |
| 113 | static_assert(_(2)(incr) == incr(2), ""); | |
| 114 | static_assert(_(3)(incr) == incr(3), ""); | |
| 115 | static_assert(!valid_call(_(invalid)), ""); | |
| 116 | static_assert(!valid_call(_(invalid), incr), ""); | |
| 117 | static_assert(!valid_call(_(invalid), invalid), ""); | |
| 118 | static_assert(!valid_call(_(1), invalid), ""); | |
| 119 | } |