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_DAY_H
11#define _LIBCPP___CHRONO_DAY_H
12
13#include <__chrono/duration.h>
14#include <__config>
15#include <compare>
16
17#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18# pragma GCC system_header
19#endif
20
21#if _LIBCPP_STD_VER >= 20
22
23_LIBCPP_BEGIN_NAMESPACE_STD
24
25namespace chrono {
26
27class day {
28private:
29 unsigned char __d_;
30
31public:
32 day() = default;
33 _LIBCPP_HIDE_FROM_ABI explicit inline constexpr day(unsigned __val) noexcept
34 : __d_(static_cast<unsigned char>(__val)) {}
35 _LIBCPP_HIDE_FROM_ABI inline constexpr day& operator++() noexcept {
36 ++__d_;
37 return *this;
38 }
39 _LIBCPP_HIDE_FROM_ABI inline constexpr day operator++(int) noexcept {
40 day __tmp = *this;
41 ++(*this);
42 return __tmp;
43 }
44 _LIBCPP_HIDE_FROM_ABI inline constexpr day& operator--() noexcept {
45 --__d_;
46 return *this;
47 }
48 _LIBCPP_HIDE_FROM_ABI inline constexpr day operator--(int) noexcept {
49 day __tmp = *this;
50 --(*this);
51 return __tmp;
52 }
53 _LIBCPP_HIDE_FROM_ABI constexpr day& operator+=(const days& __dd) noexcept;
54 _LIBCPP_HIDE_FROM_ABI constexpr day& operator-=(const days& __dd) noexcept;
55 _LIBCPP_HIDE_FROM_ABI explicit inline constexpr operator unsigned() const noexcept { return __d_; }
56 _LIBCPP_HIDE_FROM_ABI inline constexpr bool ok() const noexcept { return __d_ >= 1 && __d_ <= 31; }
57};
58
59_LIBCPP_HIDE_FROM_ABI inline constexpr bool operator==(const day& __lhs, const day& __rhs) noexcept {
60 return static_cast<unsigned>(__lhs) == static_cast<unsigned>(__rhs);
61}
62
63_LIBCPP_HIDE_FROM_ABI inline constexpr strong_ordering operator<=>(const day& __lhs, const day& __rhs) noexcept {
64 return static_cast<unsigned>(__lhs) <=> static_cast<unsigned>(__rhs);
65}
66
67_LIBCPP_HIDE_FROM_ABI inline constexpr day operator+(const day& __lhs, const days& __rhs) noexcept {
68 return day(static_cast<unsigned>(__lhs) + __rhs.count());
69}
70
71_LIBCPP_HIDE_FROM_ABI inline constexpr day operator+(const days& __lhs, const day& __rhs) noexcept {
72 return __rhs + __lhs;
73}
74
75_LIBCPP_HIDE_FROM_ABI inline constexpr day operator-(const day& __lhs, const days& __rhs) noexcept {
76 return __lhs + -__rhs;
77}
78
79_LIBCPP_HIDE_FROM_ABI inline constexpr days operator-(const day& __lhs, const day& __rhs) noexcept {
80 return days(static_cast<int>(static_cast<unsigned>(__lhs)) - static_cast<int>(static_cast<unsigned>(__rhs)));
81}
82
83_LIBCPP_HIDE_FROM_ABI inline constexpr day& day::operator+=(const days& __dd) noexcept {
84 *this = *this + __dd;
85 return *this;
86}
87
88_LIBCPP_HIDE_FROM_ABI inline constexpr day& day::operator-=(const days& __dd) noexcept {
89 *this = *this - __dd;
90 return *this;
91}
92
93} // namespace chrono
94
95_LIBCPP_END_NAMESPACE_STD
96
97#endif // _LIBCPP_STD_VER >= 20
98
99#endif // _LIBCPP___CHRONO_DAY_H
100