71 lines
2.5 KiB
Plaintext
71 lines
2.5 KiB
Plaintext
#ifndef DATE_TIME_GREGORIAN_CALENDAR_HPP__
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#define DATE_TIME_GREGORIAN_CALENDAR_HPP__
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/* Copyright (c) 2002,2003 CrystalClear Software, Inc.
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* Use, modification and distribution is subject to the
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* Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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* Author: Jeff Garland
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* $Date$
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*/
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namespace boost {
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namespace date_time {
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//! An implementation of the Gregorian calendar
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/*! This is a parameterized implementation of a proleptic Gregorian Calendar that
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can be used in the creation of date systems or just to perform calculations.
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All the methods of this class are static functions, so the intent is to
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never create instances of this class.
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@param ymd_type_ Struct type representing the year, month, day. The ymd_type must
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define a of types for the year, month, and day. These types need to be
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arithmetic types.
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@param date_int_type_ Underlying type for the date count. Must be an arithmetic type.
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*/
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template<typename ymd_type_, typename date_int_type_>
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class gregorian_calendar_base {
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public:
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//! define a type a date split into components
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typedef ymd_type_ ymd_type;
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//! define a type for representing months
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typedef typename ymd_type::month_type month_type;
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//! define a type for representing days
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typedef typename ymd_type::day_type day_type;
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//! Type to hold a stand alone year value (eg: 2002)
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typedef typename ymd_type::year_type year_type;
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//! Define the integer type to use for internal calculations
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typedef date_int_type_ date_int_type;
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static unsigned short day_of_week(const ymd_type& ymd);
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static int week_number(const ymd_type&ymd);
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//static unsigned short day_of_year(date_int_type);
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static date_int_type day_number(const ymd_type& ymd);
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static date_int_type julian_day_number(const ymd_type& ymd);
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static date_int_type modjulian_day_number(const ymd_type& ymd);
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static ymd_type from_day_number(date_int_type);
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static ymd_type from_julian_day_number(date_int_type);
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static ymd_type from_modjulian_day_number(date_int_type);
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static bool is_leap_year(year_type);
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static unsigned short end_of_month_day(year_type y, month_type m);
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static ymd_type epoch();
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static unsigned short days_in_week();
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};
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} } //namespace
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#ifndef NO_BOOST_DATE_TIME_INLINE
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#include "boost/date_time/gregorian_calendar.ipp"
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#endif
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#endif
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