1#ifndef GREG_DURATION_HPP___
2#define GREG_DURATION_HPP___
3
4/* Copyright (c) 2002,2003, 2020 CrystalClear Software, Inc.
5 * Use, modification and distribution is subject to the
6 * Boost Software License, Version 1.0. (See accompanying
7 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
8 * Author: Jeff Garland, Bart Garst
9 * $Date$
10 */
11
12#include <boost/date_time/compiler_config.hpp>
13#include <boost/date_time/date_duration.hpp>
14#include <boost/date_time/int_adapter.hpp>
15#include <boost/date_time/special_defs.hpp>
16
17namespace boost {
18namespace gregorian {
19
20 //!An internal date representation that includes infinities, not a date
21 typedef boost::date_time::duration_traits_adapted date_duration_rep;
22
23 //! Durations in days for gregorian system
24 /*! \ingroup date_basics
25 */
26 class BOOST_SYMBOL_VISIBLE date_duration :
27 public boost::date_time::date_duration< date_duration_rep >
28 {
29 typedef boost::date_time::date_duration< date_duration_rep > base_type;
30
31 public:
32 typedef base_type::duration_rep duration_rep;
33
34 //! Construct from a day count
35 BOOST_CXX14_CONSTEXPR explicit
36 date_duration(duration_rep day_count = 0) : base_type(day_count) {}
37
38 //! construct from special_values
39 BOOST_CXX14_CONSTEXPR
40 date_duration(date_time::special_values sv) : base_type(sv) {}
41
42 //! Construct from another date_duration
43 BOOST_CXX14_CONSTEXPR
44 date_duration(const base_type& other) : base_type(other)
45 {}
46
47 // Relational operators
48 // NOTE: Because of date_time::date_duration< T > design choice we don't use Boost.Operators here,
49 // because we need the class to be a direct base. Either lose EBO, or define operators by hand.
50 // The latter is more effecient.
51 BOOST_CXX14_CONSTEXPR bool operator== (const date_duration& rhs) const
52 {
53 return base_type::operator== (rhs);
54 }
55 BOOST_CXX14_CONSTEXPR bool operator!= (const date_duration& rhs) const
56 {
57 return !operator== (rhs);
58 }
59 BOOST_CXX14_CONSTEXPR bool operator< (const date_duration& rhs) const
60 {
61 return base_type::operator< (rhs);
62 }
63 BOOST_CXX14_CONSTEXPR bool operator> (const date_duration& rhs) const
64 {
65 return !(base_type::operator< (rhs) || base_type::operator== (rhs));
66 }
67 BOOST_CXX14_CONSTEXPR bool operator<= (const date_duration& rhs) const
68 {
69 return (base_type::operator< (rhs) || base_type::operator== (rhs));
70 }
71 BOOST_CXX14_CONSTEXPR bool operator>= (const date_duration& rhs) const
72 {
73 return !base_type::operator< (rhs);
74 }
75
76 //! Subtract another duration -- result is signed
77 BOOST_CXX14_CONSTEXPR date_duration& operator-= (const date_duration& rhs)
78 {
79 base_type::operator-= (rhs);
80 return *this;
81 }
82
83 BOOST_CXX14_CONSTEXPR friend
84 date_duration operator- (date_duration rhs, date_duration const& lhs);
85
86 //! Add a duration -- result is signed
87 BOOST_CXX14_CONSTEXPR date_duration& operator+= (const date_duration& rhs)
88 {
89 base_type::operator+= (rhs);
90 return *this;
91 }
92
93 BOOST_CXX14_CONSTEXPR friend
94 date_duration operator+ (date_duration rhs, date_duration const& lhs);
95
96 //! unary- Allows for dd = -date_duration(2); -> dd == -2
97 BOOST_CXX14_CONSTEXPR date_duration operator- ()const
98 {
99 return date_duration(get_rep() * (-1));
100 }
101
102 //! Division operations on a duration with an integer.
103 BOOST_CXX14_CONSTEXPR date_duration& operator/= (int divisor)
104 {
105 base_type::operator/= (divisor);
106 return *this;
107 }
108
109 BOOST_CXX14_CONSTEXPR friend date_duration operator/ (date_duration rhs, int lhs);
110
111 //! Returns the smallest duration -- used by to calculate 'end'
112 static BOOST_CXX14_CONSTEXPR date_duration unit()
113 {
114 return date_duration(base_type::unit().get_rep());
115 }
116 };
117
118 inline BOOST_CXX14_CONSTEXPR
119 date_duration operator- (date_duration rhs, date_duration const& lhs)
120 {
121 rhs -= lhs;
122 return rhs;
123 }
124
125 inline BOOST_CXX14_CONSTEXPR
126 date_duration operator+ (date_duration rhs, date_duration const& lhs)
127 {
128 rhs += lhs;
129 return rhs;
130 }
131
132 inline BOOST_CXX14_CONSTEXPR date_duration operator/ (date_duration rhs, int lhs)
133 {
134 rhs /= lhs;
135 return rhs;
136 }
137
138 //! Shorthand for date_duration
139 typedef date_duration days;
140
141} } //namespace gregorian
142
143#if defined(BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES)
144#include <boost/date_time/date_duration_types.hpp>
145#endif
146
147#endif
148

source code of include/boost/date_time/gregorian/greg_duration.hpp