boost/date_time/gregorian/greg_year.hpp

   1 #ifndef GREG_YEAR_HPP___
   2 #define GREG_YEAR_HPP___
   3
   4 /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
   5  * Use, modification and distribution is subject to the
   6  * Boost Software License, Version 1.0. (See accompanying
   7  * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
   8  * Author: Jeff Garland
   9  * $Date$
  10  */
  11
  12 #include "boost/date_time/constrained_value.hpp"
  13 #include <stdexcept>
  14 #include <string>
  15
  16 namespace boost {
  17 namespace gregorian {
  18
  19   //! Exception type for gregorian year
  20   struct bad_year : public std::out_of_range
  21   {
  22     bad_year() :
  23       std::out_of_range(std::string("Year is out of valid range: 1400..10000"))
  24     {}
  25   };
  26   //! Policy class that declares error handling gregorian year type
  27   typedef CV::simple_exception_policy<unsigned short, 1400, 10000, bad_year> greg_year_policies;
  28
  29   //! Generated representation for gregorian year
  30   typedef CV::constrained_value<greg_year_policies> greg_year_rep;
  31
  32   //! Represent a day of the month (range 1900 - 10000)
  33   /*! This small class allows for simple conversion an integer value into
  34       a year for the gregorian calendar.  This currently only allows a
  35       range of 1900 to 10000.  Both ends of the range are a bit arbitrary
  36       at the moment, but they are the limits of current testing of the
  37       library.  As such they may be increased in the future.
  38   */
  39   class greg_year : public greg_year_rep {
  40   public:
  41     greg_year(unsigned short year) : greg_year_rep(year) {}
  42     operator unsigned short()  const {return value_;}
  43   private:
  44
  45   };
  46
  47
  48
  49 } } //namespace gregorian
  50
  51
  52
  53 #endif