181ad6265SDimitry Andric // -*- C++ -*- 281ad6265SDimitry Andric //===----------------------------------------------------------------------===// 381ad6265SDimitry Andric // 481ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 581ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 681ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 781ad6265SDimitry Andric // 881ad6265SDimitry Andric //===----------------------------------------------------------------------===// 981ad6265SDimitry Andric 1081ad6265SDimitry Andric #ifndef _LIBCPP___CHRONO_MONTH_H 1181ad6265SDimitry Andric #define _LIBCPP___CHRONO_MONTH_H 1281ad6265SDimitry Andric 1381ad6265SDimitry Andric #include <__chrono/duration.h> 1481ad6265SDimitry Andric #include <__config> 15bdd1243dSDimitry Andric #include <compare> 1681ad6265SDimitry Andric 1781ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 1881ad6265SDimitry Andric # pragma GCC system_header 1981ad6265SDimitry Andric #endif 2081ad6265SDimitry Andric 2106c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 2281ad6265SDimitry Andric 2381ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 2481ad6265SDimitry Andric 25*cb14a3feSDimitry Andric namespace chrono { 2681ad6265SDimitry Andric 2781ad6265SDimitry Andric class month { 2881ad6265SDimitry Andric private: 29bdd1243dSDimitry Andric unsigned char __m_; 30*cb14a3feSDimitry Andric 3181ad6265SDimitry Andric public: 3206c3fb27SDimitry Andric month() = default; month(unsigned __val)33*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI explicit inline constexpr month(unsigned __val) noexcept 34*cb14a3feSDimitry Andric : __m_(static_cast<unsigned char>(__val)) {} 35*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator++() noexcept { 36*cb14a3feSDimitry Andric *this += months{1}; 37*cb14a3feSDimitry Andric return *this; 38*cb14a3feSDimitry Andric } 39*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month operator++(int) noexcept { 40*cb14a3feSDimitry Andric month __tmp = *this; 41*cb14a3feSDimitry Andric ++(*this); 42*cb14a3feSDimitry Andric return __tmp; 43*cb14a3feSDimitry Andric } 44*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month& operator--() noexcept { 45*cb14a3feSDimitry Andric *this -= months{1}; 46*cb14a3feSDimitry Andric return *this; 47*cb14a3feSDimitry Andric } 48*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month operator--(int) noexcept { 49*cb14a3feSDimitry Andric month __tmp = *this; 50*cb14a3feSDimitry Andric --(*this); 51*cb14a3feSDimitry Andric return __tmp; 52*cb14a3feSDimitry Andric } 5381ad6265SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr month& operator+=(const months& __m1) noexcept; 5481ad6265SDimitry Andric _LIBCPP_HIDE_FROM_ABI constexpr month& operator-=(const months& __m1) noexcept; 55bdd1243dSDimitry Andric _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __m_; } ok()56bdd1243dSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __m_ >= 1 && __m_ <= 12; } 5781ad6265SDimitry Andric }; 5881ad6265SDimitry Andric 59*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const month& __lhs, const month& __rhs) noexcept { 60*cb14a3feSDimitry Andric return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs); 61*cb14a3feSDimitry Andric } 6281ad6265SDimitry Andric 635f757f3fSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering operator<=>(const month& __lhs, const month& __rhs) noexcept { 64bdd1243dSDimitry Andric return static_cast<unsigned>(__lhs) <=> static_cast<unsigned>(__rhs); 65bdd1243dSDimitry Andric } 6681ad6265SDimitry Andric 67*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month operator+(const month& __lhs, const months& __rhs) noexcept { 6881ad6265SDimitry Andric auto const __mu = static_cast<long long>(static_cast<unsigned>(__lhs)) + (__rhs.count() - 1); 6981ad6265SDimitry Andric auto const __yr = (__mu >= 0 ? __mu : __mu - 11) / 12; 7081ad6265SDimitry Andric return month{static_cast<unsigned>(__mu - __yr * 12 + 1)}; 7181ad6265SDimitry Andric } 7281ad6265SDimitry Andric 73*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month operator+(const months& __lhs, const month& __rhs) noexcept { 74*cb14a3feSDimitry Andric return __rhs + __lhs; 75*cb14a3feSDimitry Andric } 7681ad6265SDimitry Andric 77*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month operator-(const month& __lhs, const months& __rhs) noexcept { 78*cb14a3feSDimitry Andric return __lhs + -__rhs; 79*cb14a3feSDimitry Andric } 8081ad6265SDimitry Andric 81*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr months operator-(const month& __lhs, const month& __rhs) noexcept { 8281ad6265SDimitry Andric auto const __dm = static_cast<unsigned>(__lhs) - static_cast<unsigned>(__rhs); 8381ad6265SDimitry Andric return months(__dm <= 11 ? __dm : __dm + 12); 8481ad6265SDimitry Andric } 8581ad6265SDimitry Andric 86*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month& month::operator+=(const months& __dm) noexcept { 87*cb14a3feSDimitry Andric *this = *this + __dm; 88*cb14a3feSDimitry Andric return *this; 89*cb14a3feSDimitry Andric } 9081ad6265SDimitry Andric 91*cb14a3feSDimitry Andric _LIBCPP_HIDE_FROM_ABI inline constexpr month& month::operator-=(const months& __dm) noexcept { 92*cb14a3feSDimitry Andric *this = *this - __dm; 93*cb14a3feSDimitry Andric return *this; 94*cb14a3feSDimitry Andric } 9581ad6265SDimitry Andric 9681ad6265SDimitry Andric inline constexpr month January{1}; 9781ad6265SDimitry Andric inline constexpr month February{2}; 9881ad6265SDimitry Andric inline constexpr month March{3}; 9981ad6265SDimitry Andric inline constexpr month April{4}; 10081ad6265SDimitry Andric inline constexpr month May{5}; 10181ad6265SDimitry Andric inline constexpr month June{6}; 10281ad6265SDimitry Andric inline constexpr month July{7}; 10381ad6265SDimitry Andric inline constexpr month August{8}; 10481ad6265SDimitry Andric inline constexpr month September{9}; 10581ad6265SDimitry Andric inline constexpr month October{10}; 10681ad6265SDimitry Andric inline constexpr month November{11}; 10781ad6265SDimitry Andric inline constexpr month December{12}; 10881ad6265SDimitry Andric 10981ad6265SDimitry Andric } // namespace chrono 11081ad6265SDimitry Andric 11181ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD 11281ad6265SDimitry Andric 11306c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 11481ad6265SDimitry Andric 11581ad6265SDimitry Andric #endif // _LIBCPP___CHRONO_MONTH_H 116