#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: 2010-01-10 14:17:23 -0500 (Sun, 10 Jan 2010) $ | |
*/ | |
#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. | |
date_int_type 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 |