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 |
58 | |