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

 Copyright (C) 2006, 2007 Ferdinando Ametrano
 Copyright (C) 2000, 2001, 2002, 2003 RiskMap srl
 Copyright (C) 2003, 2004, 2005, 2006, 2009 StatPro Italia srl

 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

 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 schedule.hpp
    \brief date schedule

#ifndef quantlib_schedule_hpp
#define quantlib_schedule_hpp

#include <ql/time/calendars/nullcalendar.hpp>
#include <ql/utilities/null.hpp>
#include <ql/time/period.hpp>
#include <ql/time/dategenerationrule.hpp>
#include <ql/errors.hpp>
#include <boost/optional.hpp>

namespace QuantLib {

    //! Payment schedule
00039     class Schedule {
        Schedule(const std::vector<Date>&,
                 const Calendar& calendar = NullCalendar(),
                 BusinessDayConvention convention = Unadjusted);
        Schedule(const Date& effectiveDate,
                 const Date& terminationDate,
                 const Period& tenor,
                 const Calendar& calendar,
                 BusinessDayConvention convention,
                 BusinessDayConvention terminationDateConvention,
                 DateGeneration::Rule rule,
                 bool endOfMonth,
                 const Date& firstDate = Date(),
                 const Date& nextToLastDate = Date());
        Schedule() {}
        //! \name Date access
        Size size() const { return dates_.size(); }
        const Date& operator[](Size i) const;
        const Date& at(Size i) const;
        const Date& date(Size i) const;
        Date previousDate(const Date& refDate) const;
        Date nextDate(const Date& refDate) const;
        const std::vector<Date>& dates() const { return dates_; }
        bool isRegular(Size i) const;
        //! \name Other inspectors
        bool empty() const { return dates_.empty(); }
        const Calendar& calendar() const;
        const Date& startDate() const;
        const Date& endDate() const;
        const Period& tenor() const;
        BusinessDayConvention businessDayConvention() const;
        BusinessDayConvention terminationDateBusinessDayConvention() const;
        DateGeneration::Rule rule() const;
        bool endOfMonth() const;
        //! \name Iterators
        typedef std::vector<Date>::const_iterator const_iterator;
        const_iterator begin() const { return dates_.begin(); }
        const_iterator end() const { return dates_.end(); }
        const_iterator lower_bound(const Date& d = Date()) const;
        bool fullInterface_;
        Period tenor_;
        Calendar calendar_;
        BusinessDayConvention convention_, terminationDateConvention_;
        DateGeneration::Rule rule_;
        bool endOfMonth_;
        Date firstDate_, nextToLastDate_;
        bool finalIsRegular_;
        std::vector<Date> dates_;
        std::vector<bool> isRegular_;

    //! helper class
    /*! This class provides a more comfortable interface to the
        argument list of Schedule's constructor.
00103     class MakeSchedule {
        MakeSchedule& from(const Date& effectiveDate);
        MakeSchedule& to(const Date& terminationDate);
        MakeSchedule& withTenor(const Period&);
        MakeSchedule& withFrequency(Frequency);
        MakeSchedule& withCalendar(const Calendar&);
        MakeSchedule& withConvention(BusinessDayConvention);
        MakeSchedule& withTerminationDateConvention(BusinessDayConvention);
        MakeSchedule& withRule(DateGeneration::Rule);
        MakeSchedule& forwards();
        MakeSchedule& backwards();
        MakeSchedule& endOfMonth(bool flag=true);
        MakeSchedule& withFirstDate(const Date& d);
        MakeSchedule& withNextToLastDate(const Date& d);
        operator Schedule() const;
        Calendar calendar_;
        Date effectiveDate_, terminationDate_;
        boost::optional<Period> tenor_;
        boost::optional<BusinessDayConvention> convention_;
        boost::optional<BusinessDayConvention> terminationDateConvention_;
        DateGeneration::Rule rule_;
        bool endOfMonth_;
        Date firstDate_, nextToLastDate_;

    // inline definitions

    inline const Date& Schedule::date(Size i) const {
        return dates_.at(i);

    inline const Date& Schedule::operator[](Size i) const {
        #if defined(QL_EXTRA_SAFETY_CHECKS)
        return dates_.at(i);
        return dates_[i];

    inline const Date& Schedule::at(Size i) const {
        return dates_.at(i);

    inline const Calendar& Schedule::calendar() const {
        return calendar_;

    inline const Date& Schedule::startDate() const {
        return dates_.front();

    inline const Date& Schedule::endDate() const {
        return dates_.back();

    inline const Period& Schedule::tenor() const {
        QL_REQUIRE(fullInterface_, "full interface not available");
        return tenor_;

    inline BusinessDayConvention Schedule::businessDayConvention() const {
        return convention_;

    inline BusinessDayConvention
    Schedule::terminationDateBusinessDayConvention() const {
        QL_REQUIRE(fullInterface_, "full interface not available");
        return terminationDateConvention_;

    inline DateGeneration::Rule Schedule::rule() const {
        QL_REQUIRE(fullInterface_, "full interface not available");
        return rule_;

    inline bool Schedule::endOfMonth() const {
        QL_REQUIRE(fullInterface_, "full interface not available");
        return endOfMonth_;



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