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1 #ifndef GREG_DAY_HPP___
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2 #define GREG_DAY_HPP___
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3
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4 /* Copyright (c) 2002,2003 CrystalClear Software, Inc.
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5 * Use, modification and distribution is subject to the
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6 * Boost Software License, Version 1.0. (See accompanying
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7 * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
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8 * Author: Jeff Garland
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9 * $Date$
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10 */
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11
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12 #include "boost/date_time/constrained_value.hpp"
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13 #include <stdexcept>
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14 #include <string>
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15
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16 namespace boost {
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17 namespace gregorian {
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18
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19 //! Exception type for gregorian day of month (1..31)
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20 struct bad_day_of_month : public std::out_of_range
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21 {
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22 bad_day_of_month() :
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23 std::out_of_range(std::string("Day of month value is out of range 1..31"))
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24 {}
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25 //! Allow other classes to throw with unique string for bad day like Feb 29
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26 bad_day_of_month(const std::string& s) :
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27 std::out_of_range(s)
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28 {}
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29 };
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30 //! Policy class that declares error handling and day of month ranges
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31 typedef CV::simple_exception_policy<unsigned short, 1, 31, bad_day_of_month> greg_day_policies;
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32
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33 //! Generated represetation for gregorian day of month
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34 typedef CV::constrained_value<greg_day_policies> greg_day_rep;
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35
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36 //! Represent a day of the month (range 1 - 31)
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37 /*! This small class allows for simple conversion an integer value into
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38 a day of the month for a standard gregorian calendar. The type
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39 is automatically range checked so values outside of the range 1-31
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40 will cause a bad_day_of_month exception
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41 */
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42 class greg_day : public greg_day_rep {
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43 public:
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44 greg_day(unsigned short day_of_month) : greg_day_rep(day_of_month) {}
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45 unsigned short as_number() const {return value_;}
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46 operator unsigned short() const {return value_;}
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47 private:
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48
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49 };
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50
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51
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52
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53 } } //namespace gregorian
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54
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55
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56
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57 #endif
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