1 #ifndef GREG_DATE_HPP___ 2 #define GREG_DATE_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 9 * $Date$ 10 */ 11 12 #include <boost/throw_exception.hpp> 13 #include <boost/date_time/compiler_config.hpp> 14 #include <boost/date_time/date.hpp> 15 #include <boost/date_time/special_defs.hpp> 16 #include <boost/date_time/gregorian/greg_calendar.hpp> 17 #include <boost/date_time/gregorian/greg_duration.hpp> 18 19 namespace boost { 20 namespace gregorian { 21 22 //bring special enum values into the namespace 23 using date_time::special_values; 24 using date_time::not_special; 25 using date_time::neg_infin; 26 using date_time::pos_infin; 27 using date_time::not_a_date_time; 28 using date_time::max_date_time; 29 using date_time::min_date_time; 30 31 //! A date type based on gregorian_calendar 32 /*! This class is the primary interface for programming with 33 greogorian dates. The is a lightweight type that can be 34 freely passed by value. All comparison operators are 35 supported. 36 \ingroup date_basics 37 */ 38 class BOOST_SYMBOL_VISIBLE date : public date_time::date<date, gregorian_calendar, date_duration> 39 { 40 public: 41 typedef gregorian_calendar::year_type year_type; 42 typedef gregorian_calendar::month_type month_type; 43 typedef gregorian_calendar::day_type day_type; 44 typedef gregorian_calendar::day_of_year_type day_of_year_type; 45 typedef gregorian_calendar::ymd_type ymd_type; 46 typedef gregorian_calendar::date_rep_type date_rep_type; 47 typedef gregorian_calendar::date_int_type date_int_type; 48 typedef date_duration duration_type; 49 #if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR) 50 //! Default constructor constructs with not_a_date_time date()51 BOOST_CXX14_CONSTEXPR date(): 52 date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(not_a_date_time)) 53 {} 54 #endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR 55 //! Main constructor with year, month, day date(year_type y,month_type m,day_type d)56 BOOST_CXX14_CONSTEXPR date(year_type y, month_type m, day_type d) 57 : date_time::date<date, gregorian_calendar, date_duration>(y, m, d) 58 { 59 if (gregorian_calendar::end_of_month_day(y, m) < d) { 60 boost::throw_exception(bad_day_of_month(std::string("Day of month is not valid for year"))); 61 } 62 } 63 //! Constructor from a ymd_type structure date(const ymd_type & ymd)64 BOOST_CXX14_CONSTEXPR explicit date(const ymd_type& ymd) 65 : date_time::date<date, gregorian_calendar, date_duration>(ymd) 66 {} 67 //! Needed copy constructor date(const date_int_type & rhs)68 BOOST_CXX14_CONSTEXPR explicit date(const date_int_type& rhs): 69 date_time::date<date,gregorian_calendar, date_duration>(rhs) 70 {} 71 //! Needed copy constructor date(date_rep_type rhs)72 BOOST_CXX14_CONSTEXPR explicit date(date_rep_type rhs): 73 date_time::date<date,gregorian_calendar, date_duration>(rhs) 74 {} 75 //! Constructor for infinities, not a date, max and min date date(special_values sv)76 BOOST_CXX14_CONSTEXPR explicit date(special_values sv): 77 date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(sv)) 78 { 79 if (sv == min_date_time) 80 { 81 *this = date(1400, 1, 1); 82 } 83 if (sv == max_date_time) 84 { 85 *this = date(9999, 12, 31); 86 } 87 88 } 89 //!Return the Julian Day number for the date. julian_day() const90 BOOST_CXX14_CONSTEXPR date_int_type julian_day() const 91 { 92 ymd_type ymd = year_month_day(); 93 return gregorian_calendar::julian_day_number(ymd); 94 } 95 //!Return the day of year 1..365 or 1..366 (for leap year) day_of_year() const96 BOOST_CXX14_CONSTEXPR day_of_year_type day_of_year() const 97 { 98 date start_of_year(year(), 1, 1); 99 unsigned short doy = static_cast<unsigned short>((*this-start_of_year).days() + 1); 100 return day_of_year_type(doy); 101 } 102 //!Return the Modified Julian Day number for the date. modjulian_day() const103 BOOST_CXX14_CONSTEXPR date_int_type modjulian_day() const 104 { 105 ymd_type ymd = year_month_day(); 106 return gregorian_calendar::modjulian_day_number(ymd); 107 } 108 //!Return the iso 8601 week number 1..53 week_number() const109 BOOST_CXX14_CONSTEXPR int week_number() const 110 { 111 ymd_type ymd = year_month_day(); 112 return gregorian_calendar::week_number(ymd); 113 } 114 //! Return the day number from the calendar day_number() const115 BOOST_CXX14_CONSTEXPR date_int_type day_number() const 116 { 117 return days_; 118 } 119 //! Return the last day of the current month end_of_month() const120 BOOST_CXX14_CONSTEXPR date end_of_month() const 121 { 122 ymd_type ymd = year_month_day(); 123 unsigned short eom_day = gregorian_calendar::end_of_month_day(ymd.year, ymd.month); 124 return date(ymd.year, ymd.month, eom_day); 125 } 126 127 friend BOOST_CXX14_CONSTEXPR 128 bool operator==(const date& lhs, const date& rhs); 129 130 private: 131 132 }; 133 134 inline BOOST_CXX14_CONSTEXPR operator ==(const date & lhs,const date & rhs)135 bool operator==(const date& lhs, const date& rhs) 136 { 137 return lhs.days_ == rhs.days_; 138 } 139 140 141 } } //namespace gregorian 142 143 144 145 #endif 146