1 | #ifndef GREG_DATE_HPP___ |
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2 | #define GREG_DATE_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: 2010-01-10 14:17:23 -0500 (Sun, 10 Jan 2010) $ |
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10 | */ |
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11 | |
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12 | #include <boost/throw_exception.hpp> |
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13 | #include <boost/date_time/date.hpp> |
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14 | #include <boost/date_time/special_defs.hpp> |
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15 | #include <boost/date_time/gregorian/greg_calendar.hpp> |
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16 | #include <boost/date_time/gregorian/greg_duration.hpp> |
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17 | |
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18 | namespace boost { |
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19 | namespace gregorian { |
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20 | |
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21 | //bring special enum values into the namespace |
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22 | using date_time::special_values; |
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23 | using date_time::not_special; |
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24 | using date_time::neg_infin; |
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25 | using date_time::pos_infin; |
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26 | using date_time::not_a_date_time; |
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27 | using date_time::max_date_time; |
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28 | using date_time::min_date_time; |
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29 | |
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30 | //! A date type based on gregorian_calendar |
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31 | /*! This class is the primary interface for programming with |
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32 | greogorian dates. The is a lightweight type that can be |
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33 | freely passed by value. All comparison operators are |
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34 | supported. |
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35 | \ingroup date_basics |
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36 | */ |
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37 | class date : public date_time::date<date, gregorian_calendar, date_duration> |
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38 | { |
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39 | public: |
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40 | typedef gregorian_calendar::year_type year_type; |
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41 | typedef gregorian_calendar::month_type month_type; |
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42 | typedef gregorian_calendar::day_type day_type; |
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43 | typedef gregorian_calendar::day_of_year_type day_of_year_type; |
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44 | typedef gregorian_calendar::ymd_type ymd_type; |
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45 | typedef gregorian_calendar::date_rep_type date_rep_type; |
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46 | typedef gregorian_calendar::date_int_type date_int_type; |
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47 | typedef date_duration duration_type; |
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48 | #if !defined(DATE_TIME_NO_DEFAULT_CONSTRUCTOR) |
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49 | //! Default constructor constructs with not_a_date_time |
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50 | date(): |
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51 | date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(not_a_date_time)) |
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52 | {} |
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53 | #endif // DATE_TIME_NO_DEFAULT_CONSTRUCTOR |
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54 | //! Main constructor with year, month, day |
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55 | date(year_type y, month_type m, day_type d) |
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56 | : date_time::date<date, gregorian_calendar, date_duration>(y, m, d) |
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57 | { |
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58 | if (gregorian_calendar::end_of_month_day(y, m) < d) { |
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59 | boost::throw_exception(bad_day_of_month(std::string("Day of month is not valid for year"))); |
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60 | } |
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61 | } |
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62 | //! Constructor from a ymd_type structure |
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63 | explicit date(const ymd_type& ymd) |
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64 | : date_time::date<date, gregorian_calendar, date_duration>(ymd) |
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65 | {} |
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66 | //! Needed copy constructor |
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67 | explicit date(const date_int_type& rhs): |
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68 | date_time::date<date,gregorian_calendar, date_duration>(rhs) |
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69 | {} |
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70 | //! Needed copy constructor |
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71 | explicit date(date_rep_type rhs): |
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72 | date_time::date<date,gregorian_calendar, date_duration>(rhs) |
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73 | {} |
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74 | //! Constructor for infinities, not a date, max and min date |
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75 | explicit date(special_values sv): |
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76 | date_time::date<date, gregorian_calendar, date_duration>(date_rep_type::from_special(sv)) |
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77 | { |
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78 | if (sv == min_date_time) |
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79 | { |
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80 | *this = date(1400, 1, 1); |
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81 | } |
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82 | if (sv == max_date_time) |
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83 | { |
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84 | *this = date(9999, 12, 31); |
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85 | } |
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86 | |
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87 | } |
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88 | //!Return the Julian Day number for the date. |
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89 | date_int_type julian_day() const |
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90 | { |
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91 | ymd_type ymd = year_month_day(); |
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92 | return gregorian_calendar::julian_day_number(ymd); |
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93 | } |
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94 | //!Return the day of year 1..365 or 1..366 (for leap year) |
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95 | day_of_year_type day_of_year() const |
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96 | { |
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97 | date start_of_year(year(), 1, 1); |
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98 | unsigned short doy = static_cast<unsigned short>((*this-start_of_year).days() + 1); |
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99 | return day_of_year_type(doy); |
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100 | } |
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101 | //!Return the Modified Julian Day number for the date. |
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102 | date_int_type modjulian_day() const |
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103 | { |
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104 | ymd_type ymd = year_month_day(); |
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105 | return gregorian_calendar::modjulian_day_number(ymd); |
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106 | } |
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107 | //!Return the iso 8601 week number 1..53 |
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108 | int week_number() const |
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109 | { |
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110 | ymd_type ymd = year_month_day(); |
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111 | return gregorian_calendar::week_number(ymd); |
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112 | } |
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113 | //! Return the day number from the calendar |
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114 | date_int_type day_number() const |
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115 | { |
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116 | return days_; |
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117 | } |
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118 | //! Return the last day of the current month |
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119 | date end_of_month() const |
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120 | { |
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121 | ymd_type ymd = year_month_day(); |
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122 | short eom_day = gregorian_calendar::end_of_month_day(ymd.year, ymd.month); |
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123 | return date(ymd.year, ymd.month, eom_day); |
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124 | } |
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125 | |
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126 | private: |
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127 | |
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128 | }; |
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129 | |
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130 | |
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131 | |
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132 | } } //namespace gregorian |
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133 | |
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134 | |
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135 | |
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136 | #endif |
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