1*4bdff4beSrobert // -*- C++ -*- 2*4bdff4beSrobert //===----------------------------------------------------------------------===// 3*4bdff4beSrobert // 4*4bdff4beSrobert // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5*4bdff4beSrobert // See https://llvm.org/LICENSE.txt for license information. 6*4bdff4beSrobert // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7*4bdff4beSrobert // 8*4bdff4beSrobert //===----------------------------------------------------------------------===// 9*4bdff4beSrobert 10*4bdff4beSrobert #ifndef _LIBCPP___CHRONO_MONTH_H 11*4bdff4beSrobert #define _LIBCPP___CHRONO_MONTH_H 12*4bdff4beSrobert 13*4bdff4beSrobert #include <__chrono/duration.h> 14*4bdff4beSrobert #include <__config> 15*4bdff4beSrobert #include <compare> 16*4bdff4beSrobert 17*4bdff4beSrobert #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18*4bdff4beSrobert # pragma GCC system_header 19*4bdff4beSrobert #endif 20*4bdff4beSrobert 21*4bdff4beSrobert #if _LIBCPP_STD_VER > 17 22*4bdff4beSrobert 23*4bdff4beSrobert _LIBCPP_BEGIN_NAMESPACE_STD 24*4bdff4beSrobert 25*4bdff4beSrobert namespace chrono 26*4bdff4beSrobert { 27*4bdff4beSrobert 28*4bdff4beSrobert class month { 29*4bdff4beSrobert private: 30*4bdff4beSrobert unsigned char __m_; 31*4bdff4beSrobert public: 32*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI month() = default; month(unsigned __val)33*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI explicit inline constexpr month(unsigned __val) noexcept : __m_(static_cast<unsigned char>(__val)) {} 34*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator++() noexcept { ++__m_; return *this; } 35*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr month operator++(int) noexcept { month __tmp = *this; ++(*this); return __tmp; } 36*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator--() noexcept { --__m_; return *this; } 37*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr month operator--(int) noexcept { month __tmp = *this; --(*this); return __tmp; } 38*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI constexpr month& operator+=(const months& __m1) noexcept; 39*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI constexpr month& operator-=(const months& __m1) noexcept; 40*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __m_; } ok()41*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_ >= 1 && __m_ <= 12; } 42*4bdff4beSrobert }; 43*4bdff4beSrobert 44*4bdff4beSrobert 45*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 46*4bdff4beSrobert bool operator==(const month& __lhs, const month& __rhs) noexcept 47*4bdff4beSrobert { return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); } 48*4bdff4beSrobert 49*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI constexpr strong_ordering operator<=>(const month& __lhs, const month& __rhs) noexcept { 50*4bdff4beSrobert return static_cast<unsigned>(__lhs) <=> static_cast<unsigned>(__rhs); 51*4bdff4beSrobert } 52*4bdff4beSrobert 53*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 54*4bdff4beSrobert month operator+ (const month& __lhs, const months& __rhs) noexcept 55*4bdff4beSrobert { 56*4bdff4beSrobert auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + (__rhs.count() - 1); 57*4bdff4beSrobert auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12; 58*4bdff4beSrobert return month{static_cast<unsigned>(__mu - __yr * 12 + 1)}; 59*4bdff4beSrobert } 60*4bdff4beSrobert 61*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 62*4bdff4beSrobert month operator+ (const months& __lhs, const month& __rhs) noexcept 63*4bdff4beSrobert { return __rhs + __lhs; } 64*4bdff4beSrobert 65*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 66*4bdff4beSrobert month operator- (const month& __lhs, const months& __rhs) noexcept 67*4bdff4beSrobert { return __lhs + -__rhs; } 68*4bdff4beSrobert 69*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 70*4bdff4beSrobert months operator-(const month& __lhs, const month& __rhs) noexcept 71*4bdff4beSrobert { 72*4bdff4beSrobert auto const __dm = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs); 73*4bdff4beSrobert return months(__dm <= 11 ? __dm : __dm + 12); 74*4bdff4beSrobert } 75*4bdff4beSrobert 76*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 77*4bdff4beSrobert month& month::operator+=(const months& __dm) noexcept 78*4bdff4beSrobert { *this = *this + __dm; return *this; } 79*4bdff4beSrobert 80*4bdff4beSrobert _LIBCPP_HIDE_FROM_ABI inline constexpr 81*4bdff4beSrobert month& month::operator-=(const months& __dm) noexcept 82*4bdff4beSrobert { *this = *this - __dm; return *this; } 83*4bdff4beSrobert 84*4bdff4beSrobert inline constexpr month January{1}; 85*4bdff4beSrobert inline constexpr month February{2}; 86*4bdff4beSrobert inline constexpr month March{3}; 87*4bdff4beSrobert inline constexpr month April{4}; 88*4bdff4beSrobert inline constexpr month May{5}; 89*4bdff4beSrobert inline constexpr month June{6}; 90*4bdff4beSrobert inline constexpr month July{7}; 91*4bdff4beSrobert inline constexpr month August{8}; 92*4bdff4beSrobert inline constexpr month September{9}; 93*4bdff4beSrobert inline constexpr month October{10}; 94*4bdff4beSrobert inline constexpr month November{11}; 95*4bdff4beSrobert inline constexpr month December{12}; 96*4bdff4beSrobert 97*4bdff4beSrobert } // namespace chrono 98*4bdff4beSrobert 99*4bdff4beSrobert _LIBCPP_END_NAMESPACE_STD 100*4bdff4beSrobert 101*4bdff4beSrobert #endif // _LIBCPP_STD_VER > 17 102*4bdff4beSrobert 103*4bdff4beSrobert #endif // _LIBCPP___CHRONO_MONTH_H 104