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: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $ |
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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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