boost/date_time/gregorian/greg_day.hpp

   1 #ifndef GREG_DAY_HPP___
   2 #define GREG_DAY_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 day of month (1..31)
  20   struct bad_day_of_month : public std::out_of_range
  21   {
  22     bad_day_of_month() :
  23       std::out_of_range(std::string("Day of month value is out of range 1..31"))
  24     {}
  25     //! Allow other classes to throw with unique string for bad day like Feb 29
  26     bad_day_of_month(const std::string& s) :
  27       std::out_of_range(s)
  28     {}
  29   };
  30   //! Policy class that declares error handling and day of month ranges
  31   typedef CV::simple_exception_policy<unsigned short, 1, 31, bad_day_of_month> greg_day_policies;
  32
  33   //! Generated represetation for gregorian day of month
  34   typedef CV::constrained_value<greg_day_policies> greg_day_rep;
  35
  36   //! Represent a day of the month (range 1 - 31)
  37   /*! This small class allows for simple conversion an integer value into
  38       a day of the month for a standard gregorian calendar.  The type
  39       is automatically range checked so values outside of the range 1-31
  40       will cause a bad_day_of_month exception
  41   */
  42   class greg_day : public greg_day_rep {
  43   public:
  44     greg_day(unsigned short day_of_month) : greg_day_rep(day_of_month) {}
  45     unsigned short as_number() const {return value_;}
  46     operator unsigned short()  const {return value_;}
  47   private:
  48
  49   };
  50
  51
  52
  53 } } //namespace gregorian
  54
  55
  56
  57 #endif