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

/*
 Copyright (C) 2004 Ferdinando Ametrano

 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
 <quantlib-dev@lists.sf.net>. 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 one.hpp
    \brief 1/1 day counter
*/

#ifndef quantlib_one_day_counter_h
#define quantlib_one_day_counter_h

#include <ql/daycounter.hpp>

namespace QuantLib {

    //! 1/1 day count convention
    /*! \ingroup daycounters */
    class OneDayCounter : public DayCounter {
      private:
        class Impl : public DayCounter::Impl {
          public:
            std::string name() const { return std::string("1/1"); }
            BigInteger dayCount(const Date& d1, const Date& d2) const {
                // the sign is all we need
                return (d2 >= d1 ? 1 : -1);
            };
            Time yearFraction(const Date& d1,
                              const Date& d2,
                              const Date&,
                              const Date&) const {
                return Time(dayCount(d1, d2));
            }
        };
      public:
        OneDayCounter()
        : DayCounter(boost::shared_ptr<DayCounter::Impl>(
                                        new OneDayCounter::Impl)) {}
    };

}

#endif