| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // UNSUPPORTED: c++98, c++03, c++11, c++14, c++17 |
| |
| // <chrono> |
| // class year_month_day_last; |
| |
| // constexpr year_month_day_last |
| // operator+(const year_month_day_last& ymdl, const months& dm) noexcept; |
| // |
| // Returns: (ymdl.year() / ymdl.month() + dm) / last. |
| // |
| // constexpr year_month_day_last |
| // operator+(const months& dm, const year_month_day_last& ymdl) noexcept; |
| // |
| // Returns: ymdl + dm. |
| // |
| // |
| // constexpr year_month_day_last |
| // operator+(const year_month_day_last& ymdl, const years& dy) noexcept; |
| // |
| // Returns: {ymdl.year()+dy, ymdl.month_day_last()}. |
| // |
| // constexpr year_month_day_last |
| // operator+(const years& dy, const year_month_day_last& ymdl) noexcept; |
| // |
| // Returns: ymdl + dy |
| |
| |
| |
| #include <chrono> |
| #include <type_traits> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| constexpr bool testConstexprYears(std::chrono::year_month_day_last ymdl) |
| { |
| std::chrono::years offset{23}; |
| if (static_cast<int>((ymdl ).year()) != 1) return false; |
| if (static_cast<int>((ymdl + offset).year()) != 24) return false; |
| if ( (ymdl + offset).month() != ymdl.month()) return false; |
| if (static_cast<int>((offset + ymdl).year()) != 24) return false; |
| if ( (offset + ymdl).month() != ymdl.month()) return false; |
| return true; |
| } |
| |
| |
| constexpr bool testConstexprMonths(std::chrono::year_month_day_last ymdl) |
| { |
| std::chrono::months offset{6}; |
| if (static_cast<unsigned>((ymdl ).month()) != 1) return false; |
| if ( (ymdl + offset).year() != ymdl.year()) return false; |
| if (static_cast<unsigned>((ymdl + offset).month()) != 7) return false; |
| if (static_cast<unsigned>((offset + ymdl).month()) != 7) return false; |
| if ( (offset + ymdl).year() != ymdl.year()) return false; |
| return true; |
| } |
| |
| |
| int main(int, char**) |
| { |
| using year = std::chrono::year; |
| using month = std::chrono::month; |
| using month_day_last = std::chrono::month_day_last; |
| using year_month_day_last = std::chrono::year_month_day_last; |
| using months = std::chrono::months; |
| using years = std::chrono::years; |
| |
| constexpr month January = std::chrono::January; |
| |
| { // year_month_day_last + months |
| ASSERT_NOEXCEPT(std::declval<year_month_day_last>() + std::declval<months>()); |
| ASSERT_NOEXCEPT(std::declval<months>() + std::declval<year_month_day_last>()); |
| |
| ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<year_month_day_last>() + std::declval<months>())); |
| ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<months>() + std::declval<year_month_day_last>())); |
| |
| static_assert(testConstexprMonths(year_month_day_last{year{1}, month_day_last{January}}), ""); |
| |
| year_month_day_last ym{year{1234}, month_day_last{January}}; |
| for (int i = 0; i <= 10; ++i) // TODO test wrap-around |
| { |
| year_month_day_last ym1 = ym + months{i}; |
| year_month_day_last ym2 = months{i} + ym; |
| assert(static_cast<int>(ym1.year()) == 1234); |
| assert(static_cast<int>(ym2.year()) == 1234); |
| assert(ym1.month() == month(1 + i)); |
| assert(ym2.month() == month(1 + i)); |
| assert(ym1 == ym2); |
| } |
| } |
| |
| { // year_month_day_last + years |
| ASSERT_NOEXCEPT(std::declval<year_month_day_last>() + std::declval<years>()); |
| ASSERT_NOEXCEPT(std::declval<years>() + std::declval<year_month_day_last>()); |
| |
| ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<year_month_day_last>() + std::declval<years>())); |
| ASSERT_SAME_TYPE(year_month_day_last, decltype(std::declval<years>() + std::declval<year_month_day_last>())); |
| |
| static_assert(testConstexprYears(year_month_day_last{year{1}, month_day_last{January}}), ""); |
| |
| year_month_day_last ym{year{1234}, month_day_last{January}}; |
| for (int i = 0; i <= 10; ++i) |
| { |
| year_month_day_last ym1 = ym + years{i}; |
| year_month_day_last ym2 = years{i} + ym; |
| assert(static_cast<int>(ym1.year()) == i + 1234); |
| assert(static_cast<int>(ym2.year()) == i + 1234); |
| assert(ym1.month() == std::chrono::January); |
| assert(ym2.month() == std::chrono::January); |
| assert(ym1 == ym2); |
| } |
| } |
| |
| |
| return 0; |
| } |