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1 | #ifndef DATE_DURATION_TYPES_HPP___ |
2 | #define DATE_DURATION_TYPES_HPP___ | |
3 | ||
4 | /* Copyright (c) 2004 CrystalClear Software, Inc. | |
5 | * Subject to the Boost Software License, Version 1.0. | |
6 | * (See accompanying file LICENSE_1_0.txt or | |
7 | * http://www.boost.org/LICENSE_1_0.txt) | |
8 | * Author: Jeff Garland, Bart Garst | |
9 | * $Date$ | |
10 | */ | |
b32b8144 FG |
11 | |
12 | #include <boost/date_time/compiler_config.hpp> | |
7c673cae FG |
13 | #include <boost/date_time/int_adapter.hpp> |
14 | #include <boost/date_time/special_defs.hpp> | |
15 | #include <boost/date_time/date_duration.hpp> | |
16 | ||
17 | namespace boost { | |
18 | namespace date_time { | |
19 | ||
20 | ||
21 | //! Additional duration type that represents a number of n*7 days | |
22 | template <class duration_config> | |
b32b8144 | 23 | class BOOST_SYMBOL_VISIBLE weeks_duration : public date_duration<duration_config> { |
7c673cae FG |
24 | public: |
25 | weeks_duration(typename duration_config::impl_type w) | |
26 | : date_duration<duration_config>(w * 7) {} | |
27 | weeks_duration(special_values sv) | |
28 | : date_duration<duration_config>(sv) {} | |
29 | }; | |
30 | ||
31 | // predeclare | |
32 | template<class t> | |
b32b8144 | 33 | class BOOST_SYMBOL_VISIBLE years_duration; |
7c673cae FG |
34 | |
35 | //! additional duration type that represents a logical month | |
36 | /*! A logical month enables things like: "date(2002,Mar,2) + months(2) -> | |
37 | * 2002-May2". If the date is a last day-of-the-month, the result will | |
38 | * also be a last-day-of-the-month. | |
39 | */ | |
40 | template<class base_config> | |
b32b8144 | 41 | class BOOST_SYMBOL_VISIBLE months_duration |
7c673cae FG |
42 | { |
43 | private: | |
44 | typedef typename base_config::int_rep int_rep; | |
45 | typedef typename int_rep::int_type int_type; | |
46 | typedef typename base_config::date_type date_type; | |
47 | typedef typename date_type::duration_type duration_type; | |
48 | typedef typename base_config::month_adjustor_type month_adjustor_type; | |
49 | typedef months_duration<base_config> months_type; | |
50 | typedef years_duration<base_config> years_type; | |
51 | public: | |
52 | months_duration(int_rep num) : _m(num) {} | |
53 | months_duration(special_values sv) : _m(sv) | |
54 | { | |
55 | _m = int_rep::from_special(sv); | |
56 | } | |
57 | int_rep number_of_months() const { return _m; } | |
58 | //! returns a negative duration | |
59 | duration_type get_neg_offset(const date_type& d) const | |
60 | { | |
61 | month_adjustor_type m_adj(_m.as_number()); | |
62 | return duration_type(m_adj.get_neg_offset(d)); | |
63 | } | |
64 | duration_type get_offset(const date_type& d) const | |
65 | { | |
66 | month_adjustor_type m_adj(_m.as_number()); | |
67 | return duration_type(m_adj.get_offset(d)); | |
68 | } | |
69 | bool operator==(const months_type& rhs) const | |
70 | { | |
71 | return(_m == rhs._m); | |
72 | } | |
73 | bool operator!=(const months_type& rhs) const | |
74 | { | |
75 | return(_m != rhs._m); | |
76 | } | |
77 | months_type operator+(const months_type& rhs)const | |
78 | { | |
79 | return months_type(_m + rhs._m); | |
80 | } | |
81 | months_type& operator+=(const months_type& rhs) | |
82 | { | |
83 | _m = _m + rhs._m; | |
84 | return *this; | |
85 | } | |
86 | months_type operator-(const months_type& rhs)const | |
87 | { | |
88 | return months_type(_m - rhs._m); | |
89 | } | |
90 | months_type& operator-=(const months_type& rhs) | |
91 | { | |
92 | _m = _m - rhs._m; | |
93 | return *this; | |
94 | } | |
95 | months_type operator*(const int_type rhs)const | |
96 | { | |
97 | return months_type(_m * rhs); | |
98 | } | |
99 | months_type& operator*=(const int_type rhs) | |
100 | { | |
101 | _m = _m * rhs; | |
102 | return *this; | |
103 | } | |
104 | months_type operator/(const int_type rhs)const | |
105 | { | |
106 | return months_type(_m / rhs); | |
107 | } | |
108 | months_type& operator/=(const int_type rhs) | |
109 | { | |
110 | _m = _m / rhs; | |
111 | return *this; | |
112 | } | |
113 | months_type operator+(const years_type& y)const | |
114 | { | |
115 | return months_type(y.number_of_years() * 12 + _m); | |
116 | } | |
117 | months_type& operator+=(const years_type& y) | |
118 | { | |
119 | _m = y.number_of_years() * 12 + _m; | |
120 | return *this; | |
121 | } | |
122 | months_type operator-(const years_type& y) const | |
123 | { | |
124 | return months_type(_m - y.number_of_years() * 12); | |
125 | } | |
126 | months_type& operator-=(const years_type& y) | |
127 | { | |
128 | _m = _m - y.number_of_years() * 12; | |
129 | return *this; | |
130 | } | |
131 | ||
132 | // | |
133 | friend date_type operator+(const date_type& d, const months_type& m) | |
134 | { | |
135 | return d + m.get_offset(d); | |
136 | } | |
137 | friend date_type operator+=(date_type& d, const months_type& m) | |
138 | { | |
139 | return d += m.get_offset(d); | |
140 | } | |
141 | friend date_type operator-(const date_type& d, const months_type& m) | |
142 | { | |
143 | // get_neg_offset returns a negative duration, so we add | |
144 | return d + m.get_neg_offset(d); | |
145 | } | |
146 | friend date_type operator-=(date_type& d, const months_type& m) | |
147 | { | |
148 | // get_neg_offset returns a negative duration, so we add | |
149 | return d += m.get_neg_offset(d); | |
150 | } | |
151 | ||
152 | private: | |
153 | int_rep _m; | |
154 | }; | |
155 | ||
156 | //! additional duration type that represents a logical year | |
157 | /*! A logical year enables things like: "date(2002,Mar,2) + years(2) -> | |
158 | * 2004-Mar-2". If the date is a last day-of-the-month, the result will | |
159 | * also be a last-day-of-the-month (ie date(2001-Feb-28) + years(3) -> | |
160 | * 2004-Feb-29). | |
161 | */ | |
162 | template<class base_config> | |
b32b8144 | 163 | class BOOST_SYMBOL_VISIBLE years_duration |
7c673cae FG |
164 | { |
165 | private: | |
166 | typedef typename base_config::int_rep int_rep; | |
167 | typedef typename int_rep::int_type int_type; | |
168 | typedef typename base_config::date_type date_type; | |
169 | typedef typename date_type::duration_type duration_type; | |
170 | typedef typename base_config::month_adjustor_type month_adjustor_type; | |
171 | typedef years_duration<base_config> years_type; | |
172 | typedef months_duration<base_config> months_type; | |
173 | public: | |
174 | years_duration(int_rep num) : _y(num) {} | |
175 | years_duration(special_values sv) : _y(sv) | |
176 | { | |
177 | _y = int_rep::from_special(sv); | |
178 | } | |
179 | int_rep number_of_years() const { return _y; } | |
180 | //! returns a negative duration | |
181 | duration_type get_neg_offset(const date_type& d) const | |
182 | { | |
183 | month_adjustor_type m_adj(_y.as_number() * 12); | |
184 | return duration_type(m_adj.get_neg_offset(d)); | |
185 | } | |
186 | duration_type get_offset(const date_type& d) const | |
187 | { | |
188 | month_adjustor_type m_adj(_y.as_number() * 12); | |
189 | return duration_type(m_adj.get_offset(d)); | |
190 | } | |
191 | bool operator==(const years_type& rhs) const | |
192 | { | |
193 | return(_y == rhs._y); | |
194 | } | |
195 | bool operator!=(const years_type& rhs) const | |
196 | { | |
197 | return(_y != rhs._y); | |
198 | } | |
199 | years_type operator+(const years_type& rhs)const | |
200 | { | |
201 | return years_type(_y + rhs._y); | |
202 | } | |
203 | years_type& operator+=(const years_type& rhs) | |
204 | { | |
205 | _y = _y + rhs._y; | |
206 | return *this; | |
207 | } | |
208 | years_type operator-(const years_type& rhs)const | |
209 | { | |
210 | return years_type(_y - rhs._y); | |
211 | } | |
212 | years_type& operator-=(const years_type& rhs) | |
213 | { | |
214 | _y = _y - rhs._y; | |
215 | return *this; | |
216 | } | |
217 | years_type operator*(const int_type rhs)const | |
218 | { | |
219 | return years_type(_y * rhs); | |
220 | } | |
221 | years_type& operator*=(const int_type rhs) | |
222 | { | |
223 | _y = _y * rhs; | |
224 | return *this; | |
225 | } | |
226 | years_type operator/(const int_type rhs)const | |
227 | { | |
228 | return years_type(_y / rhs); | |
229 | } | |
230 | years_type& operator/=(const int_type rhs) | |
231 | { | |
232 | _y = _y / rhs; | |
233 | return *this; | |
234 | } | |
235 | months_type operator+(const months_type& m) const | |
236 | { | |
237 | return(months_type(_y * 12 + m.number_of_months())); | |
238 | } | |
239 | months_type operator-(const months_type& m) const | |
240 | { | |
241 | return(months_type(_y * 12 - m.number_of_months())); | |
242 | } | |
243 | ||
244 | // | |
245 | friend date_type operator+(const date_type& d, const years_type& y) | |
246 | { | |
247 | return d + y.get_offset(d); | |
248 | } | |
249 | friend date_type operator+=(date_type& d, const years_type& y) | |
250 | { | |
251 | return d += y.get_offset(d); | |
252 | } | |
253 | friend date_type operator-(const date_type& d, const years_type& y) | |
254 | { | |
255 | // get_neg_offset returns a negative duration, so we add | |
256 | return d + y.get_neg_offset(d); | |
257 | } | |
258 | friend date_type operator-=(date_type& d, const years_type& y) | |
259 | { | |
260 | // get_neg_offset returns a negative duration, so we add | |
261 | return d += y.get_neg_offset(d); | |
262 | } | |
263 | ||
264 | private: | |
265 | int_rep _y; | |
266 | }; | |
267 | ||
268 | }} // namespace boost::date_time | |
269 | ||
270 | #endif // DATE_DURATION_TYPES_HPP___ |