Chris@16: #ifndef GREG_DATE_HPP___
Chris@16: #define GREG_DATE_HPP___
Chris@16: 
Chris@16: /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
Chris@16:  * Use, modification and distribution is subject to the
Chris@16:  * Boost Software License, Version 1.0. (See accompanying
Chris@16:  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
Chris@16:  * Author: Jeff Garland
Chris@101:  * $Date$
Chris@16:  */
Chris@16: 
Chris@16: #include <boost/throw_exception.hpp>
Chris@16: #include <boost/date_time/date.hpp>
Chris@16: #include <boost/date_time/special_defs.hpp>
Chris@16: #include <boost/date_time/gregorian/greg_calendar.hpp>
Chris@16: #include <boost/date_time/gregorian/greg_duration.hpp>
Chris@16: 
Chris@16: namespace boost {
Chris@16: namespace gregorian {
Chris@16: 
Chris@16:   //bring special enum values into the namespace
Chris@16:   using date_time::special_values;
Chris@16:   using date_time::not_special;
Chris@16:   using date_time::neg_infin;
Chris@16:   using date_time::pos_infin;
Chris@16:   using date_time::not_a_date_time;
Chris@16:   using date_time::max_date_time;
Chris@16:   using date_time::min_date_time;
Chris@16: 
Chris@16:   //! A date type based on gregorian_calendar
Chris@16:   /*! This class is the primary interface for programming with
Chris@16:       greogorian dates.  The is a lightweight type that can be
Chris@16:       freely passed by value.  All comparison operators are
Chris@16:       supported.
Chris@16:       \ingroup date_basics
Chris@16:   */
Chris@16:   class date : public date_time::date<date, gregorian_calendar, date_duration>
Chris@16:   {
Chris@16:    public:
Chris@16:     typedef gregorian_calendar::year_type year_type;
Chris@16:     typedef gregorian_calendar::month_type month_type;
Chris@16:     typedef gregorian_calendar::day_type day_type;
Chris@16:     typedef gregorian_calendar::day_of_year_type day_of_year_type;
Chris@16:     typedef gregorian_calendar::ymd_type ymd_type;
Chris@16:     typedef gregorian_calendar::date_rep_type date_rep_type;
Chris@16:     typedef gregorian_calendar::date_int_type date_int_type;
Chris@16:     typedef date_duration  duration_type;
Chris@16: #if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR)
Chris@16:     //! Default constructor constructs with not_a_date_time
Chris@16:     date():
Chris@16:       date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(not_a_date_time))
Chris@16:     {}
Chris@16: #endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR
Chris@16:     //! Main constructor with year, month, day
Chris@16:     date(year_type y, month_type m, day_type d)
Chris@16:       : date_time::date<date, gregorian_calendar, date_duration>(y, m, d)
Chris@16:     {
Chris@16:       if (gregorian_calendar::end_of_month_day(y, m) < d) {
Chris@16:         boost::throw_exception(bad_day_of_month(std::string("Day of month is not valid for year")));
Chris@16:       }
Chris@16:     }
Chris@16:     //! Constructor from a ymd_type structure
Chris@16:     explicit date(const ymd_type& ymd)
Chris@16:       : date_time::date<date, gregorian_calendar, date_duration>(ymd)
Chris@16:     {}
Chris@16:     //! Needed copy constructor
Chris@16:     explicit date(const date_int_type& rhs):
Chris@16:       date_time::date<date,gregorian_calendar, date_duration>(rhs)
Chris@16:     {}
Chris@16:     //! Needed copy constructor
Chris@16:     explicit date(date_rep_type rhs):
Chris@16:       date_time::date<date,gregorian_calendar, date_duration>(rhs)
Chris@16:     {}
Chris@16:     //! Constructor for infinities, not a date, max and min date
Chris@16:     explicit date(special_values sv):
Chris@16:       date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(sv))
Chris@16:     {
Chris@16:       if (sv == min_date_time)
Chris@16:       {
Chris@16:         *this = date(1400, 1, 1);
Chris@16:       }
Chris@16:       if (sv == max_date_time)
Chris@16:       {
Chris@16:         *this = date(9999, 12, 31);
Chris@16:       }
Chris@16: 
Chris@16:     }
Chris@16:     //!Return the Julian Day number for the date.
Chris@16:     date_int_type julian_day() const
Chris@16:     {
Chris@16:       ymd_type ymd = year_month_day();
Chris@16:       return gregorian_calendar::julian_day_number(ymd);
Chris@16:     }
Chris@16:     //!Return the day of year 1..365 or 1..366 (for leap year)
Chris@16:     day_of_year_type day_of_year() const
Chris@16:     {
Chris@16:       date start_of_year(year(), 1, 1);
Chris@16:       unsigned short doy = static_cast<unsigned short>((*this-start_of_year).days() + 1);
Chris@16:       return day_of_year_type(doy);
Chris@16:     }
Chris@16:     //!Return the Modified Julian Day number for the date.
Chris@16:     date_int_type modjulian_day() const
Chris@16:     {
Chris@16:       ymd_type ymd = year_month_day();
Chris@16:       return gregorian_calendar::modjulian_day_number(ymd);
Chris@16:     }
Chris@16:     //!Return the iso 8601 week number 1..53
Chris@16:     int week_number() const
Chris@16:     {
Chris@16:       ymd_type ymd = year_month_day();
Chris@16:       return gregorian_calendar::week_number(ymd);
Chris@16:     }
Chris@16:     //! Return the day number from the calendar
Chris@16:     date_int_type day_number() const
Chris@16:     {
Chris@16:       return days_;
Chris@16:     }
Chris@16:     //! Return the last day of the current month
Chris@16:     date end_of_month() const
Chris@16:     {
Chris@16:       ymd_type ymd = year_month_day();
Chris@16:       short eom_day =  gregorian_calendar::end_of_month_day(ymd.year, ymd.month);
Chris@16:       return date(ymd.year, ymd.month, eom_day);
Chris@16:     }
Chris@16: 
Chris@16:    private:
Chris@16: 
Chris@16:   };
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: } } //namespace gregorian
Chris@16: 
Chris@16: 
Chris@16: 
Chris@16: #endif