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119 lines
4.9 KiB
C++
119 lines
4.9 KiB
C++
/*
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@copyright Louis Dionne 2014
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/functional/placeholder.hpp>
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#include <boost/hana/assert.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <type_traits>
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using namespace boost::hana;
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struct _extra { virtual ~_extra() { } };
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_extra extra{};
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constexpr struct { } invalid{};
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template <typename ...> using bool_t = bool;
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constexpr bool valid_call(...) { return false; }
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template <typename F, typename ...Args>
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constexpr auto valid_call(F&& f, Args&& ...args)
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-> bool_t<decltype(std::forward<F>(f)(std::forward<Args>(args)...))>
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{ return true; }
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#define BOOST_HANA_TEST_BINARY_OP(op, x, y) \
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BOOST_HANA_CONSTEXPR_CHECK((_ op _)(x, y) == (x op y)); \
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BOOST_HANA_RUNTIME_CHECK((_ op _)(x, y, extra) == (x op y)); \
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BOOST_HANA_RUNTIME_CHECK((_ op _)(x, y, extra, extra) == (x op y)); \
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static_assert(!valid_call(_ op _), ""); \
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static_assert(!valid_call(_ op _, invalid), ""); \
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static_assert(!valid_call(_ op _, invalid, invalid), ""); \
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\
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BOOST_HANA_CONSTEXPR_CHECK((_ op y)(x) == (x op y)); \
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BOOST_HANA_RUNTIME_CHECK((_ op y)(x, extra) == (x op y)); \
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BOOST_HANA_RUNTIME_CHECK((_ op y)(x, extra, extra) == (x op y)); \
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static_assert(!valid_call(_ op y), ""); \
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static_assert(!valid_call(_ op y, invalid), ""); \
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\
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BOOST_HANA_CONSTEXPR_CHECK((x op _)(y) == (x op y)); \
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BOOST_HANA_RUNTIME_CHECK((x op _)(y, extra) == (x op y)); \
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BOOST_HANA_RUNTIME_CHECK((x op _)(y, extra, extra) == (x op y)); \
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static_assert(!valid_call(x op _), ""); \
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static_assert(!valid_call(x op _, invalid), ""); \
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static_assert(!valid_call(x op _, invalid), ""); \
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/**/
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#define BOOST_HANA_TEST_UNARY_OP(op, x) \
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BOOST_HANA_CONSTEXPR_CHECK((op _)(x) == (op x)); \
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BOOST_HANA_RUNTIME_CHECK((op _)(x, extra) == (op x)); \
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BOOST_HANA_RUNTIME_CHECK((op _)(x, extra, extra) == (op x)); \
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static_assert(!valid_call(op _), ""); \
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static_assert(!valid_call(op _, invalid), ""); \
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/**/
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int main() {
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// Arithmetic
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BOOST_HANA_TEST_UNARY_OP(+, 1)
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BOOST_HANA_TEST_UNARY_OP(-, 1)
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BOOST_HANA_TEST_BINARY_OP(+, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(-, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(*, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(/, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(%, 6, 3)
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// Bitwise
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BOOST_HANA_TEST_UNARY_OP(~, 5)
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BOOST_HANA_TEST_BINARY_OP(&, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(|, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(^, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(<<, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(>>, 6, 3)
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// Comparison
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BOOST_HANA_TEST_BINARY_OP(==, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(!=, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(<, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(<=, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(>, 6, 3)
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BOOST_HANA_TEST_BINARY_OP(>=, 6, 3)
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// Logical
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BOOST_HANA_TEST_BINARY_OP(||, true, false)
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BOOST_HANA_TEST_BINARY_OP(&&, true, true)
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BOOST_HANA_TEST_UNARY_OP(!, true)
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// Member access
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constexpr int i = 4;
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constexpr int array[] = {0, 1, 2};
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BOOST_HANA_TEST_UNARY_OP(*, &i)
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BOOST_HANA_CONSTEXPR_CHECK(_[0](array) == array[0]);
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BOOST_HANA_RUNTIME_CHECK(_[0](array, extra) == array[0]);
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BOOST_HANA_RUNTIME_CHECK(_[0](array, extra, extra) == array[0]);
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BOOST_HANA_CONSTEXPR_CHECK(_[1](array) == array[1]);
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BOOST_HANA_CONSTEXPR_CHECK(_[1](array) == array[1]);
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BOOST_HANA_CONSTEXPR_CHECK(_[2](array) == array[2]);
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static_assert(!valid_call(_[invalid]), "");
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static_assert(!valid_call(_[invalid], array), "");
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static_assert(!valid_call(_[invalid], invalid), "");
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static_assert(!valid_call(_[0], invalid), "");
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// Call operator
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BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto x) -> decltype(x+1) {
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return x + 1;
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};
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BOOST_HANA_CONSTEXPR_CHECK(_(1)(f) == f(1));
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BOOST_HANA_RUNTIME_CHECK(_(1)(f, extra) == f(1));
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BOOST_HANA_RUNTIME_CHECK(_(1)(f, extra, extra) == f(1));
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BOOST_HANA_CONSTEXPR_CHECK(_(2)(f) == f(2));
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BOOST_HANA_CONSTEXPR_CHECK(_(3)(f) == f(3));
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static_assert(!valid_call(_(invalid)), "");
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static_assert(!valid_call(_(invalid), f), "");
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static_assert(!valid_call(_(invalid), invalid), "");
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static_assert(!valid_call(_(1), invalid), "");
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}
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