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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/assert.hpp>
- #include <boost/hana/functional/placeholder.hpp>
- #include <utility>
- namespace hana = boost::hana;
- using hana::_;
- struct extra_t { virtual ~extra_t() { } };
- extra_t extra{};
- constexpr struct { } invalid{};
- template <typename ...> using bool_t = bool;
- constexpr bool valid_call(...) { return false; }
- template <typename F, typename ...Args>
- constexpr auto valid_call(F&& f, Args&& ...args)
- -> bool_t<decltype(std::forward<F>(f)(std::forward<Args>(args)...))>
- { return true; }
- #define BOOST_HANA_TEST_BINARY_OP(op, x, y) \
- static_assert((_ op _)(x, y) == (x op y), ""); \
- BOOST_HANA_RUNTIME_CHECK((_ op _)(x, y, extra) == (x op y)); \
- BOOST_HANA_RUNTIME_CHECK((_ op _)(x, y, extra, extra) == (x op y)); \
- static_assert(!valid_call(_ op _), ""); \
- static_assert(!valid_call(_ op _, invalid), ""); \
- static_assert(!valid_call(_ op _, invalid, invalid), ""); \
- \
- static_assert((_ op y)(x) == (x op y), ""); \
- BOOST_HANA_RUNTIME_CHECK((_ op y)(x, extra) == (x op y)); \
- BOOST_HANA_RUNTIME_CHECK((_ op y)(x, extra, extra) == (x op y)); \
- static_assert(!valid_call(_ op y), ""); \
- static_assert(!valid_call(_ op y, invalid), ""); \
- \
- static_assert((x op _)(y) == (x op y), ""); \
- BOOST_HANA_RUNTIME_CHECK((x op _)(y, extra) == (x op y)); \
- BOOST_HANA_RUNTIME_CHECK((x op _)(y, extra, extra) == (x op y)); \
- static_assert(!valid_call(x op _), ""); \
- static_assert(!valid_call(x op _, invalid), ""); \
- static_assert(!valid_call(x op _, invalid), ""); \
- /**/
- #define BOOST_HANA_TEST_UNARY_OP(op, x) \
- static_assert((op _)(x) == (op x), ""); \
- BOOST_HANA_RUNTIME_CHECK((op _)(x, extra) == (op x)); \
- BOOST_HANA_RUNTIME_CHECK((op _)(x, extra, extra) == (op x)); \
- static_assert(!valid_call(op _), ""); \
- static_assert(!valid_call(op _, invalid), ""); \
- /**/
- struct incr_t {
- template <typename X>
- constexpr auto operator()(X x) const -> decltype(x + 1)
- { return x + 1; }
- };
- constexpr incr_t incr{};
- int main() {
- // Arithmetic
- BOOST_HANA_TEST_UNARY_OP(+, 1)
- BOOST_HANA_TEST_UNARY_OP(-, 1)
- BOOST_HANA_TEST_BINARY_OP(+, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(-, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(*, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(/, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(%, 6, 3)
- // Bitwise
- BOOST_HANA_TEST_UNARY_OP(~, 5)
- BOOST_HANA_TEST_BINARY_OP(&, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(|, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(^, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(<<, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(>>, 6, 3)
- // Comparison
- BOOST_HANA_TEST_BINARY_OP(==, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(!=, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(<, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(<=, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(>, 6, 3)
- BOOST_HANA_TEST_BINARY_OP(>=, 6, 3)
- // Logical
- BOOST_HANA_TEST_BINARY_OP(||, true, false)
- BOOST_HANA_TEST_BINARY_OP(&&, true, true)
- BOOST_HANA_TEST_UNARY_OP(!, true)
- // Member access
- constexpr int i = 4;
- constexpr int array[] = {0, 1, 2};
- BOOST_HANA_TEST_UNARY_OP(*, &i)
- static_assert(_[0](array) == array[0], "");
- BOOST_HANA_RUNTIME_CHECK(_[0](array, extra) == array[0]);
- BOOST_HANA_RUNTIME_CHECK(_[0](array, extra, extra) == array[0]);
- static_assert(_[1](array) == array[1], "");
- static_assert(_[1](array) == array[1], "");
- static_assert(_[2](array) == array[2], "");
- static_assert(!valid_call(_[invalid]), "");
- static_assert(!valid_call(_[invalid], array), "");
- static_assert(!valid_call(_[invalid], invalid), "");
- static_assert(!valid_call(_[0], invalid), "");
- // Call operator
- static_assert(_(1)(incr) == incr(1), "");
- BOOST_HANA_RUNTIME_CHECK(_(1)(incr, extra) == incr(1));
- BOOST_HANA_RUNTIME_CHECK(_(1)(incr, extra, extra) == incr(1));
- static_assert(_(2)(incr) == incr(2), "");
- static_assert(_(3)(incr) == incr(3), "");
- static_assert(!valid_call(_(invalid)), "");
- static_assert(!valid_call(_(invalid), incr), "");
- static_assert(!valid_call(_(invalid), invalid), "");
- static_assert(!valid_call(_(1), invalid), "");
- }
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