1 #ifndef GREG_DURATION_HPP___
2 #define GREG_DURATION_HPP___
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
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>
20 //!An internal date representation that includes infinities, not a date
21 typedef boost::date_time::duration_traits_adapted date_duration_rep;
23 //! Durations in days for gregorian system
24 /*! \ingroup date_basics
26 class BOOST_SYMBOL_VISIBLE date_duration :
27 public boost::date_time::date_duration< date_duration_rep >
29 typedef boost::date_time::date_duration< date_duration_rep > base_type;
32 typedef base_type::duration_rep duration_rep;
34 //! Construct from a day count
35 BOOST_CXX14_CONSTEXPR explicit
36 date_duration(duration_rep day_count = 0) : base_type(day_count) {}
38 //! construct from special_values
40 date_duration(date_time::special_values sv) : base_type(sv) {}
42 //! Construct from another date_duration
44 date_duration(const base_type& other) : base_type(other)
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
53 return base_type::operator== (rhs);
55 BOOST_CXX14_CONSTEXPR bool operator!= (const date_duration& rhs) const
57 return !operator== (rhs);
59 BOOST_CXX14_CONSTEXPR bool operator< (const date_duration& rhs) const
61 return base_type::operator< (rhs);
63 BOOST_CXX14_CONSTEXPR bool operator> (const date_duration& rhs) const
65 return !(base_type::operator< (rhs) || base_type::operator== (rhs));
67 BOOST_CXX14_CONSTEXPR bool operator<= (const date_duration& rhs) const
69 return (base_type::operator< (rhs) || base_type::operator== (rhs));
71 BOOST_CXX14_CONSTEXPR bool operator>= (const date_duration& rhs) const
73 return !base_type::operator< (rhs);
76 //! Subtract another duration -- result is signed
77 BOOST_CXX14_CONSTEXPR date_duration& operator-= (const date_duration& rhs)
79 base_type::operator-= (rhs);
83 BOOST_CXX14_CONSTEXPR friend
84 date_duration operator- (date_duration rhs, date_duration const& lhs);
86 //! Add a duration -- result is signed
87 BOOST_CXX14_CONSTEXPR date_duration& operator+= (const date_duration& rhs)
89 base_type::operator+= (rhs);
93 BOOST_CXX14_CONSTEXPR friend
94 date_duration operator+ (date_duration rhs, date_duration const& lhs);
96 //! unary- Allows for dd = -date_duration(2); -> dd == -2
97 BOOST_CXX14_CONSTEXPR date_duration operator- ()const
99 return date_duration(get_rep() * (-1));
102 //! Division operations on a duration with an integer.
103 BOOST_CXX14_CONSTEXPR date_duration& operator/= (int divisor)
105 base_type::operator/= (divisor);
109 BOOST_CXX14_CONSTEXPR friend date_duration operator/ (date_duration rhs, int lhs);
111 //! Returns the smallest duration -- used by to calculate 'end'
112 static BOOST_CXX14_CONSTEXPR date_duration unit()
114 return date_duration(base_type::unit().get_rep());
118 inline BOOST_CXX14_CONSTEXPR
119 date_duration operator- (date_duration rhs, date_duration const& lhs)
125 inline BOOST_CXX14_CONSTEXPR
126 date_duration operator+ (date_duration rhs, date_duration const& lhs)
132 inline BOOST_CXX14_CONSTEXPR date_duration operator/ (date_duration rhs, int lhs)
138 //! Shorthand for date_duration
139 typedef date_duration days;
141 } } //namespace gregorian
143 #if defined(BOOST_DATE_TIME_OPTIONAL_GREGORIAN_TYPES)
144 #include <boost/date_time/date_duration_types.hpp>