| #ifndef GREG_DATE_HPP___ |
| #define GREG_DATE_HPP___ |
| |
| /* Copyright (c) 2002,2003 CrystalClear Software, Inc. |
| * Use, modification and distribution is subject to the |
| * Boost Software License, Version 1.0. (See accompanying |
| * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) |
| * Author: Jeff Garland |
| * $Date: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $ |
| */ |
| |
| #include <boost/throw_exception.hpp> |
| #include <boost/date_time/date.hpp> |
| #include <boost/date_time/special_defs.hpp> |
| #include <boost/date_time/gregorian/greg_calendar.hpp> |
| #include <boost/date_time/gregorian/greg_duration.hpp> |
| |
| namespace boost { |
| namespace gregorian { |
| |
| //bring special enum values into the namespace |
| using date_time::special_values; |
| using date_time::not_special; |
| using date_time::neg_infin; |
| using date_time::pos_infin; |
| using date_time::not_a_date_time; |
| using date_time::max_date_time; |
| using date_time::min_date_time; |
| |
| //! A date type based on gregorian_calendar |
| /*! This class is the primary interface for programming with |
| greogorian dates. The is a lightweight type that can be |
| freely passed by value. All comparison operators are |
| supported. |
| \ingroup date_basics |
| */ |
| class date : public date_time::date<date, gregorian_calendar, date_duration> |
| { |
| public: |
| typedef gregorian_calendar::year_type year_type; |
| typedef gregorian_calendar::month_type month_type; |
| typedef gregorian_calendar::day_type day_type; |
| typedef gregorian_calendar::day_of_year_type day_of_year_type; |
| typedef gregorian_calendar::ymd_type ymd_type; |
| typedef gregorian_calendar::date_rep_type date_rep_type; |
| typedef gregorian_calendar::date_int_type date_int_type; |
| typedef date_duration duration_type; |
| #if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR) |
| //! Default constructor constructs with not_a_date_time |
| date(): |
| date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(not_a_date_time)) |
| {} |
| #endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR |
| //! Main constructor with year, month, day |
| date(year_type y, month_type m, day_type d) |
| : date_time::date<date, gregorian_calendar, date_duration>(y, m, d) |
| { |
| if (gregorian_calendar::end_of_month_day(y, m) < d) { |
| boost::throw_exception(bad_day_of_month(std::string("Day of month is not valid for year"))); |
| } |
| } |
| //! Constructor from a ymd_type structure |
| explicit date(const ymd_type& ymd) |
| : date_time::date<date, gregorian_calendar, date_duration>(ymd) |
| {} |
| //! Needed copy constructor |
| explicit date(const date_int_type& rhs): |
| date_time::date<date,gregorian_calendar, date_duration>(rhs) |
| {} |
| //! Needed copy constructor |
| explicit date(date_rep_type rhs): |
| date_time::date<date,gregorian_calendar, date_duration>(rhs) |
| {} |
| //! Constructor for infinities, not a date, max and min date |
| explicit date(special_values sv): |
| date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(sv)) |
| { |
| if (sv == min_date_time) |
| { |
| *this = date(1400, 1, 1); |
| } |
| if (sv == max_date_time) |
| { |
| *this = date(9999, 12, 31); |
| } |
| |
| } |
| //!Return the Julian Day number for the date. |
| date_int_type julian_day() const |
| { |
| ymd_type ymd = year_month_day(); |
| return gregorian_calendar::julian_day_number(ymd); |
| } |
| //!Return the day of year 1..365 or 1..366 (for leap year) |
| day_of_year_type day_of_year() const |
| { |
| date start_of_year(year(), 1, 1); |
| unsigned short doy = static_cast<unsigned short>((*this-start_of_year).days() + 1); |
| return day_of_year_type(doy); |
| } |
| //!Return the Modified Julian Day number for the date. |
| long modjulian_day() const |
| { |
| ymd_type ymd = year_month_day(); |
| return gregorian_calendar::modjulian_day_number(ymd); |
| } |
| //!Return the iso 8601 week number 1..53 |
| int week_number() const |
| { |
| ymd_type ymd = year_month_day(); |
| return gregorian_calendar::week_number(ymd); |
| } |
| //! Return the day number from the calendar |
| date_int_type day_number() const |
| { |
| return days_; |
| } |
| //! Return the last day of the current month |
| date end_of_month() const |
| { |
| ymd_type ymd = year_month_day(); |
| short eom_day = gregorian_calendar::end_of_month_day(ymd.year, ymd.month); |
| return date(ymd.year, ymd.month, eom_day); |
| } |
| |
| private: |
| |
| }; |
| |
| |
| |
| } } //namespace gregorian |
| |
| |
| |
| #endif |