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1 | #ifndef GREG_DATE_HPP___ |
2 | #define GREG_DATE_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/throw_exception.hpp> | |
b32b8144 | 13 | #include <boost/date_time/compiler_config.hpp> |
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14 | #include <boost/date_time/date.hpp> |
15 | #include <boost/date_time/special_defs.hpp> | |
16 | #include <boost/date_time/gregorian/greg_calendar.hpp> | |
17 | #include <boost/date_time/gregorian/greg_duration.hpp> | |
18 | ||
19 | namespace boost { | |
20 | namespace gregorian { | |
21 | ||
22 | //bring special enum values into the namespace | |
23 | using date_time::special_values; | |
24 | using date_time::not_special; | |
25 | using date_time::neg_infin; | |
26 | using date_time::pos_infin; | |
27 | using date_time::not_a_date_time; | |
28 | using date_time::max_date_time; | |
29 | using date_time::min_date_time; | |
30 | ||
31 | //! A date type based on gregorian_calendar | |
32 | /*! This class is the primary interface for programming with | |
33 | greogorian dates. The is a lightweight type that can be | |
34 | freely passed by value. All comparison operators are | |
35 | supported. | |
36 | \ingroup date_basics | |
37 | */ | |
b32b8144 | 38 | class BOOST_SYMBOL_VISIBLE date : public date_time::date<date, gregorian_calendar, date_duration> |
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39 | { |
40 | public: | |
41 | typedef gregorian_calendar::year_type year_type; | |
42 | typedef gregorian_calendar::month_type month_type; | |
43 | typedef gregorian_calendar::day_type day_type; | |
44 | typedef gregorian_calendar::day_of_year_type day_of_year_type; | |
45 | typedef gregorian_calendar::ymd_type ymd_type; | |
46 | typedef gregorian_calendar::date_rep_type date_rep_type; | |
47 | typedef gregorian_calendar::date_int_type date_int_type; | |
48 | typedef date_duration duration_type; | |
49 | #if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR) | |
50 | //! Default constructor constructs with not_a_date_time | |
51 | date(): | |
52 | date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(not_a_date_time)) | |
53 | {} | |
54 | #endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR | |
55 | //! Main constructor with year, month, day | |
56 | date(year_type y, month_type m, day_type d) | |
57 | : date_time::date<date, gregorian_calendar, date_duration>(y, m, d) | |
58 | { | |
59 | if (gregorian_calendar::end_of_month_day(y, m) < d) { | |
60 | boost::throw_exception(bad_day_of_month(std::string("Day of month is not valid for year"))); | |
61 | } | |
62 | } | |
63 | //! Constructor from a ymd_type structure | |
64 | explicit date(const ymd_type& ymd) | |
65 | : date_time::date<date, gregorian_calendar, date_duration>(ymd) | |
66 | {} | |
67 | //! Needed copy constructor | |
68 | explicit date(const date_int_type& rhs): | |
69 | date_time::date<date,gregorian_calendar, date_duration>(rhs) | |
70 | {} | |
71 | //! Needed copy constructor | |
72 | explicit date(date_rep_type rhs): | |
73 | date_time::date<date,gregorian_calendar, date_duration>(rhs) | |
74 | {} | |
75 | //! Constructor for infinities, not a date, max and min date | |
76 | explicit date(special_values sv): | |
77 | date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(sv)) | |
78 | { | |
79 | if (sv == min_date_time) | |
80 | { | |
81 | *this = date(1400, 1, 1); | |
82 | } | |
83 | if (sv == max_date_time) | |
84 | { | |
85 | *this = date(9999, 12, 31); | |
86 | } | |
87 | ||
88 | } | |
89 | //!Return the Julian Day number for the date. | |
90 | date_int_type julian_day() const | |
91 | { | |
92 | ymd_type ymd = year_month_day(); | |
93 | return gregorian_calendar::julian_day_number(ymd); | |
94 | } | |
95 | //!Return the day of year 1..365 or 1..366 (for leap year) | |
96 | day_of_year_type day_of_year() const | |
97 | { | |
98 | date start_of_year(year(), 1, 1); | |
99 | unsigned short doy = static_cast<unsigned short>((*this-start_of_year).days() + 1); | |
100 | return day_of_year_type(doy); | |
101 | } | |
102 | //!Return the Modified Julian Day number for the date. | |
103 | date_int_type modjulian_day() const | |
104 | { | |
105 | ymd_type ymd = year_month_day(); | |
106 | return gregorian_calendar::modjulian_day_number(ymd); | |
107 | } | |
108 | //!Return the iso 8601 week number 1..53 | |
109 | int week_number() const | |
110 | { | |
111 | ymd_type ymd = year_month_day(); | |
112 | return gregorian_calendar::week_number(ymd); | |
113 | } | |
114 | //! Return the day number from the calendar | |
115 | date_int_type day_number() const | |
116 | { | |
117 | return days_; | |
118 | } | |
119 | //! Return the last day of the current month | |
120 | date end_of_month() const | |
121 | { | |
122 | ymd_type ymd = year_month_day(); | |
92f5a8d4 | 123 | unsigned short eom_day = gregorian_calendar::end_of_month_day(ymd.year, ymd.month); |
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124 | return date(ymd.year, ymd.month, eom_day); |
125 | } | |
126 | ||
127 | private: | |
128 | ||
129 | }; | |
130 | ||
131 | ||
132 | ||
133 | } } //namespace gregorian | |
134 | ||
135 | ||
136 | ||
137 | #endif |