/*
 * Copyright (c) 1995, 1996 Gunther Schadow.  All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 * 
 * 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
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#ifndef PG_DTTYP_H_
#define PG_DTTYP_H_

#include <pg_config.h>

#pragma interface

#include <Timebase.h>
#include <DataTypeCode.h>
#include <limits.h>

class DTtyp : public Timebase
{  
 public:
  enum
    {
      YearMin  = 1850,     YearMax  = 2050, // just a check for plausibility
      MonthMin = 1,        MonthMax = 12,
      DayMin   = 1,        DayMax   = 31,
    };

 private:
  int _year;    /* year with century */
  int _month;   /* 1..12 */
  int _day;     /* 1..31 */

 public:
  DTtyp();
  DTtyp(int year, int month, int day);
  
  int getYear()  const;
  int getMonth() const;
  int getDay()   const;

  void setYear(int);
  void setMonth(int);
  void setDay(int);

  void unset();
  void nullify();

  result input(istream&);
  void   output(ostream&) const;
};

#ifndef OUTLINE
# include "DTtyp.icc"
#endif

#endif /* !PG_DTTYP_H_ */