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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 |