| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // 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 |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___CHRONO_MONTH_H |
| #define _LIBCPP___CHRONO_MONTH_H |
| |
| #include <__chrono/duration.h> |
| #include <__config> |
| #include <compare> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #if _LIBCPP_STD_VER > 17 |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| namespace chrono |
| { |
| |
| class month { |
| private: |
| unsigned char __m_; |
| public: |
| _LIBCPP_HIDE_FROM_ABI month() = default; |
| _LIBCPP_HIDE_FROM_ABI explicit inline constexpr month(unsigned __val) noexcept : __m_(static_cast<unsigned char>(__val)) {} |
| _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator++() noexcept { ++__m_; return *this; } |
| _LIBCPP_HIDE_FROM_ABI inline constexpr month operator++(int) noexcept { month __tmp = *this; ++(*this); return __tmp; } |
| _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator--() noexcept { --__m_; return *this; } |
| _LIBCPP_HIDE_FROM_ABI inline constexpr month operator--(int) noexcept { month __tmp = *this; --(*this); return __tmp; } |
| _LIBCPP_HIDE_FROM_ABI constexpr month& operator+=(const months& __m1) noexcept; |
| _LIBCPP_HIDE_FROM_ABI constexpr month& operator-=(const months& __m1) noexcept; |
| _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __m_; } |
| _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_ >= 1 && __m_ <= 12; } |
| }; |
| |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| bool operator==(const month& __lhs, const month& __rhs) noexcept |
| { return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); } |
| |
| _LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const month& __lhs, const month& __rhs) noexcept { |
| return static_cast<unsigned>(__lhs) <=> static_cast<unsigned>(__rhs); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| month operator+ (const month& __lhs, const months& __rhs) noexcept |
| { |
| auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + (__rhs.count() - 1); |
| auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12; |
| return month{static_cast<unsigned>(__mu - __yr * 12 + 1)}; |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| month operator+ (const months& __lhs, const month& __rhs) noexcept |
| { return __rhs + __lhs; } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| month operator- (const month& __lhs, const months& __rhs) noexcept |
| { return __lhs + -__rhs; } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| months operator-(const month& __lhs, const month& __rhs) noexcept |
| { |
| auto const __dm = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs); |
| return months(__dm <= 11 ? __dm : __dm + 12); |
| } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| month& month::operator+=(const months& __dm) noexcept |
| { *this = *this + __dm; return *this; } |
| |
| _LIBCPP_HIDE_FROM_ABI inline constexpr |
| month& month::operator-=(const months& __dm) noexcept |
| { *this = *this - __dm; return *this; } |
| |
| inline constexpr month January{1}; |
| inline constexpr month February{2}; |
| inline constexpr month March{3}; |
| inline constexpr month April{4}; |
| inline constexpr month May{5}; |
| inline constexpr month June{6}; |
| inline constexpr month July{7}; |
| inline constexpr month August{8}; |
| inline constexpr month September{9}; |
| inline constexpr month October{10}; |
| inline constexpr month November{11}; |
| inline constexpr month December{12}; |
| |
| } // namespace chrono |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP_STD_VER > 17 |
| |
| #endif // _LIBCPP___CHRONO_MONTH_H |