[Quantlib-dev] South Korea Calendar - modification proposed

[Chongseok <or...@ha...>]

/* -*- mode: c++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*
 Copyright (C) 2004 FIMAT Group
 Copyright (C) 2007 StatPro Italia srl
 Copyright (C) 2008 Charles Chongseok Hyun (or...@ha...)

 This file is part of QuantLib, a free-software/open-source library
 for financial quantitative analysts and developers - http://quantlib.org/

 QuantLib is free software: you can redistribute it and/or modify it
 under the terms of the QuantLib license.  You should have received a
 copy of the license along with this program; if not, please email
 <qua...@li...>. The license is also available online at
 <http://quantlib.org/license.shtml>.

 This program is distributed in the hope that it will be useful, but WITHOUT
 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 FOR A PARTICULAR PURPOSE.  See the license for more details.
*/

/*! \file southkorea.hpp
    \brief South Korean calendars
*/

#ifndef quantlib_south_korean_calendar_hpp
#define quantlib_south_korean_calendar_hpp

#include <ql/time/calendar.hpp>

namespace QuantLib {

    //! South Korean calendars
    /*! Public holidays with definite rules:
        <ul>
        <li>Saturdays</li>
        <li>Sundays</li>
        <li>New Year's Day, January 1st</li>
        <li>Independence Day, March 1st</li>
        <li>Children's Day, May 5th</li>
        <li>Memorial Day, June 6th</li>
        <li>Liberation Day, August 15th</li>
        <li>National Fondation Day, October 3th</li>
        <li>Christmas Day, December 25th</li>
        </ul>

        Other public holidays for which no rule is given
        (data available for 2004-2010 only):
        <ul>
        <li>Lunar New Year: The last day of the previous lunar year, January 1st, 2nd in lunar calendar</li>
        <li>Election Days
		<ul>
		<li>National Assembly: 2004-APR-15, 2008-APR-09</li>
		<li>Presidency: 2007-DEC-19</li>
		<li>Regional Election: 2006-MAY-31</li>
		</ul>
        <li>Buddha's birthday, April 8th in lunar calendar</li>
        <li>Harvest Moon Day: August 14th, 15th, 16th in lunar calendar</li>
        </ul>

		<B>Holidays for settlements</B>:
        <ul>
		<li>All public holidays listed above</li>
        <li>Labour Day, May 1st</li>
        </ul>

		<B>Holidays for the Korea exchange</B>
        (data from <http://www.krx.co.kr> or 
		<http://www.dooriworld.com/daishin/holiday/holiday.html>):
        <ul>
		<li>All public holidays listed above
        <li>Labour Day, May 1st</li>
        <li>Year-end closing: 2004-DEC-31, 2005-DEC-30, 2006-DEC-29, 2007-DEC-31</li>
        </ul>

		<B>Important changes!!!</B>:
        <ul>
        <li>Arbour Day, April 5th: a holiday until 2005, not a holiday after 2005</li>
        <li>Constitution Day, July 17th: a holiday until 2007, not a holiday after 2008</li>
        </ul>

        \ingroup calendars
    */
    class SouthKorea : public Calendar {
      private:
		//! SettlementImpl represents South Korean public holidays.
        class SettlementImpl : public Calendar::Impl {
          public:
		    SettlementImpl() : calendarName_("South Korean settlement"){}

            virtual std::string name() const { return calendarName_; }
			virtual bool isWeekend(Weekday) const;
            virtual bool isBusinessDay(const Date&) const;
		  protected:
		    //! Constructor
		    /*! This constructor is for the sake of calling from subclasses.
			*/
		    SettlementImpl(const std::string& calendarName) : calendarName_(calendarName){}
		  protected:
     		std::string calendarName_;
        };

		/*! 
		  KrxImpl inherits SettlementImpl 
		  because all KRX business days are also settlement business days.
		*/
        class KrxImpl : public SettlementImpl {
          public:
		    KrxImpl() : SettlementImpl(std::string("South Korean settlement")){}
            virtual bool isBusinessDay(const Date&) const;
        };
      public:
        enum Market { Settlement,   //!< generic settlement calendar
					  KRX			//!< Korea exchange calendar
        };
        SouthKorea(Market m = Settlement);
    };

}

#endif