date.h

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#ifndef _DLR_DATE_H_
#define _DLR_DATE_H_

namespace dlr {

  namespace utilities {
    
    class Date {
    public:
      Date()
        : m_day(0), m_month(0), m_year(0) {}

    
      Date(const std::string& isoString) {this->setISODate(isoString);}

    
      Date(size_t year, size_t month, size_t day)
        : m_day(day), m_month(month), m_year(year) {this->sanitize();}


      Date(const Date& source)
        : m_day(source.m_day), m_month(source.m_month),
          m_year(source.m_year) {}


      ~Date() {}


      size_t
      day() const {return m_day;}


      size_t
      month() const {return m_month;}
    

      void
      setDay(size_t day) {m_day = day; this->sanitize();}


      void
      setISODate(const std::string& isoString);
    

      void
      setMonth(size_t month) {m_month = month; this->sanitize();}


      void
      setYear(size_t year) {m_year = year;}


      size_t
      year() const {return m_year;}

    private:
      // Private member functions.

      size_t
      dayCount(size_t month, size_t year);
      
      // Check for leapyear.
      bool
      isLeapYear(size_t year);
    
      void
      sanitize();

      // Private data members.
      size_t m_day;
      size_t m_month;
      size_t m_year;
    }; // class Date


    bool
    operator<(const Date& date0, const Date& date1);


    bool
    operator>(const Date& date0, const Date& date1);


    bool
    operator<=(const Date& date0, const Date& date1);


    bool
    operator>=(const Date& date0, const Date& date1);


    bool
    operator==(const Date& date0, const Date& date1);


    bool
    operator!=(const Date& date0, const Date& date1);


    std::ostream&
    operator<<(std::ostream& stream, const Date& date);


    std::istream&
    operator>>(std::istream& stream, Date& date);

  } // namespace utilities
    
} // namespace dlr


/* ======= Declarations to maintain compatibility with legacy code. ======= */

namespace dlr {

  using utilities::Date;
  
} // namespace dlr


#endif // #ifndef _DLR_DATE_H_

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