1 // -*- C++ -*- 2 //===----------------------------------------------------------------------===// 3 // 4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5 // See https://llvm.org/LICENSE.txt for license information. 6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef _LIBCPP___CHRONO_YEAR_MONTH_H 11 #define _LIBCPP___CHRONO_YEAR_MONTH_H 12 13 #include <__chrono/duration.h> 14 #include <__chrono/month.h> 15 #include <__chrono/year.h> 16 #include <__config> 17 18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19 # pragma GCC system_header 20 #endif 21 22 #if _LIBCPP_STD_VER > 17 23 24 _LIBCPP_BEGIN_NAMESPACE_STD 25 26 namespace chrono 27 { 28 29 class year_month { 30 chrono::year __y; 31 chrono::month __m; 32 public: 33 _LIBCPP_HIDE_FROM_ABI year_month() = default; 34 _LIBCPP_HIDE_FROM_ABI constexpr year_month(const chrono::year& __yval, const chrono::month& __mval) noexcept 35 : __y{__yval}, __m{__mval} {} 36 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::year year() const noexcept { return __y; } 37 _LIBCPP_HIDE_FROM_ABI inline constexpr chrono::month month() const noexcept { return __m; } 38 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const months& __dm) noexcept { this->__m += __dm; return *this; } 39 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const months& __dm) noexcept { this->__m -= __dm; return *this; } 40 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator+=(const years& __dy) noexcept { this->__y += __dy; return *this; } 41 _LIBCPP_HIDE_FROM_ABI inline constexpr year_month& operator-=(const years& __dy) noexcept { this->__y -= __dy; return *this; } 42 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __y.ok() && __m.ok(); } 43 }; 44 45 _LIBCPP_HIDE_FROM_ABI inline constexpr 46 year_month operator/(const year& __y, const month& __m) noexcept { return year_month{__y, __m}; } 47 48 _LIBCPP_HIDE_FROM_ABI inline constexpr 49 year_month operator/(const year& __y, int __m) noexcept { return year_month{__y, month(__m)}; } 50 51 _LIBCPP_HIDE_FROM_ABI inline constexpr 52 bool operator==(const year_month& __lhs, const year_month& __rhs) noexcept 53 { return __lhs.year() == __rhs.year() && __lhs.month() == __rhs.month(); } 54 55 _LIBCPP_HIDE_FROM_ABI inline constexpr 56 bool operator!=(const year_month& __lhs, const year_month& __rhs) noexcept 57 { return !(__lhs == __rhs); } 58 59 _LIBCPP_HIDE_FROM_ABI inline constexpr 60 bool operator< (const year_month& __lhs, const year_month& __rhs) noexcept 61 { return __lhs.year() != __rhs.year() ? __lhs.year() < __rhs.year() : __lhs.month() < __rhs.month(); } 62 63 _LIBCPP_HIDE_FROM_ABI inline constexpr 64 bool operator> (const year_month& __lhs, const year_month& __rhs) noexcept 65 { return __rhs < __lhs; } 66 67 _LIBCPP_HIDE_FROM_ABI inline constexpr 68 bool operator<=(const year_month& __lhs, const year_month& __rhs) noexcept 69 { return !(__rhs < __lhs);} 70 71 _LIBCPP_HIDE_FROM_ABI inline constexpr 72 bool operator>=(const year_month& __lhs, const year_month& __rhs) noexcept 73 { return !(__lhs < __rhs); } 74 75 _LIBCPP_HIDE_FROM_ABI constexpr 76 year_month operator+(const year_month& __lhs, const months& __rhs) noexcept 77 { 78 int __dmi = static_cast<int>(static_cast<unsigned>(__lhs.month())) - 1 + __rhs.count(); 79 const int __dy = (__dmi >= 0 ? __dmi : __dmi-11) / 12; 80 __dmi = __dmi - __dy * 12 + 1; 81 return (__lhs.year() + years(__dy)) / month(static_cast<unsigned>(__dmi)); 82 } 83 84 _LIBCPP_HIDE_FROM_ABI constexpr 85 year_month operator+(const months& __lhs, const year_month& __rhs) noexcept 86 { return __rhs + __lhs; } 87 88 _LIBCPP_HIDE_FROM_ABI constexpr 89 year_month operator+(const year_month& __lhs, const years& __rhs) noexcept 90 { return (__lhs.year() + __rhs) / __lhs.month(); } 91 92 _LIBCPP_HIDE_FROM_ABI constexpr 93 year_month operator+(const years& __lhs, const year_month& __rhs) noexcept 94 { return __rhs + __lhs; } 95 96 _LIBCPP_HIDE_FROM_ABI constexpr 97 months operator-(const year_month& __lhs, const year_month& __rhs) noexcept 98 { return (__lhs.year() - __rhs.year()) + months(static_cast<unsigned>(__lhs.month()) - static_cast<unsigned>(__rhs.month())); } 99 100 _LIBCPP_HIDE_FROM_ABI constexpr 101 year_month operator-(const year_month& __lhs, const months& __rhs) noexcept 102 { return __lhs + -__rhs; } 103 104 _LIBCPP_HIDE_FROM_ABI constexpr 105 year_month operator-(const year_month& __lhs, const years& __rhs) noexcept 106 { return __lhs + -__rhs; } 107 108 } // namespace chrono 109 110 _LIBCPP_END_NAMESPACE_STD 111 112 #endif // _LIBCPP_STD_VER > 17 113 114 #endif // _LIBCPP___CHRONO_YEAR_MONTH_H 115