| #ifndef DATE_TIME_TIME_SYSTEM_SPLIT_HPP | |
| #define DATE_TIME_TIME_SYSTEM_SPLIT_HPP | |
| /* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc. | |
| * Use, modification and distribution is subject to the | |
| * Boost Software License, Version 1.0. (See accompanying | |
| * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) | |
| * Author: Jeff Garland, Bart Garst | |
| * $Date: 2008-11-13 15:10:23 -0500 (Thu, 13 Nov 2008) $ | |
| */ | |
| #include <string> | |
| #include "boost/date_time/compiler_config.hpp" | |
| #include "boost/date_time/special_defs.hpp" | |
| namespace boost { | |
| namespace date_time { | |
| //! An unadjusted time system implementation. | |
| #if (defined(BOOST_DATE_TIME_NO_MEMBER_INIT)) | |
| template<typename config, boost::int32_t ticks_per_second> | |
| #else | |
| template<typename config> | |
| #endif | |
| class split_timedate_system | |
| { | |
| public: | |
| typedef typename config::time_rep_type time_rep_type; | |
| typedef typename config::date_type date_type; | |
| typedef typename config::time_duration_type time_duration_type; | |
| typedef typename config::date_duration_type date_duration_type; | |
| typedef typename config::int_type int_type; | |
| typedef typename config::resolution_traits resolution_traits; | |
| //86400 is number of seconds in a day... | |
| #if (defined(BOOST_DATE_TIME_NO_MEMBER_INIT)) | |
| typedef date_time::wrapping_int<int_type, INT64_C(86400) * ticks_per_second > wrap_int_type; | |
| #else | |
| private: | |
| BOOST_STATIC_CONSTANT(int_type, ticks_per_day = INT64_C(86400) * config::tick_per_second); | |
| public: | |
| # if BOOST_WORKAROUND( __BORLANDC__, BOOST_TESTED_AT(0X581) ) | |
| typedef date_time::wrapping_int< split_timedate_system::int_type, split_timedate_system::ticks_per_day> wrap_int_type; | |
| # else | |
| typedef date_time::wrapping_int<int_type, ticks_per_day> wrap_int_type; | |
| #endif | |
| #endif | |
| static time_rep_type get_time_rep(special_values sv) | |
| { | |
| switch (sv) { | |
| case not_a_date_time: | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| case pos_infin: | |
| return time_rep_type(date_type(pos_infin), | |
| time_duration_type(pos_infin)); | |
| case neg_infin: | |
| return time_rep_type(date_type(neg_infin), | |
| time_duration_type(neg_infin)); | |
| case max_date_time: { | |
| time_duration_type td = time_duration_type(24,0,0,0) - time_duration_type(0,0,0,1); | |
| return time_rep_type(date_type(max_date_time), td); | |
| } | |
| case min_date_time: | |
| return time_rep_type(date_type(min_date_time), time_duration_type(0,0,0,0)); | |
| default: | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| } | |
| } | |
| static time_rep_type get_time_rep(const date_type& day, | |
| const time_duration_type& tod, | |
| date_time::dst_flags /* dst */ = not_dst) | |
| { | |
| if(day.is_special() || tod.is_special()) { | |
| if(day.is_not_a_date() || tod.is_not_a_date_time()) { | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| } | |
| else if(day.is_pos_infinity()) { | |
| if(tod.is_neg_infinity()) { | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| } | |
| else { | |
| return time_rep_type(day, time_duration_type(pos_infin)); | |
| } | |
| } | |
| else if(day.is_neg_infinity()) { | |
| if(tod.is_pos_infinity()) { | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| } | |
| else { | |
| return time_rep_type(day, time_duration_type(neg_infin)); | |
| } | |
| } | |
| else if(tod.is_pos_infinity()) { | |
| if(day.is_neg_infinity()) { | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| } | |
| else { | |
| return time_rep_type(date_type(pos_infin), tod); | |
| } | |
| } | |
| else if(tod.is_neg_infinity()) { | |
| if(day.is_pos_infinity()) { | |
| return time_rep_type(date_type(not_a_date_time), | |
| time_duration_type(not_a_date_time)); | |
| } | |
| else { | |
| return time_rep_type(date_type(neg_infin), tod); | |
| } | |
| } | |
| } | |
| return time_rep_type(day, tod); | |
| } | |
| static date_type get_date(const time_rep_type& val) | |
| { | |
| return date_type(val.day); | |
| } | |
| static time_duration_type get_time_of_day(const time_rep_type& val) | |
| { | |
| return time_duration_type(val.time_of_day); | |
| } | |
| static std::string zone_name(const time_rep_type&) | |
| { | |
| return std::string(); | |
| } | |
| static bool is_equal(const time_rep_type& lhs, const time_rep_type& rhs) | |
| { | |
| return ((lhs.day == rhs.day) && (lhs.time_of_day == rhs.time_of_day)); | |
| } | |
| static bool is_less(const time_rep_type& lhs, const time_rep_type& rhs) | |
| { | |
| if (lhs.day < rhs.day) return true; | |
| if (lhs.day > rhs.day) return false; | |
| return (lhs.time_of_day < rhs.time_of_day); | |
| } | |
| static time_rep_type add_days(const time_rep_type& base, | |
| const date_duration_type& dd) | |
| { | |
| return time_rep_type(base.day+dd, base.time_of_day); | |
| } | |
| static time_rep_type subtract_days(const time_rep_type& base, | |
| const date_duration_type& dd) | |
| { | |
| return split_timedate_system::get_time_rep(base.day-dd, base.time_of_day); | |
| } | |
| static time_rep_type subtract_time_duration(const time_rep_type& base, | |
| const time_duration_type& td) | |
| { | |
| if(base.day.is_special() || td.is_special()) | |
| { | |
| return split_timedate_system::get_time_rep(base.day, -td); | |
| } | |
| if (td.is_negative()) { | |
| time_duration_type td1 = td.invert_sign(); | |
| return add_time_duration(base,td1); | |
| } | |
| wrap_int_type day_offset(base.time_of_day.ticks()); | |
| date_duration_type day_overflow(static_cast<typename date_duration_type::duration_rep_type>(day_offset.subtract(td.ticks()))); | |
| return time_rep_type(base.day-day_overflow, | |
| time_duration_type(0,0,0,day_offset.as_int())); | |
| } | |
| static time_rep_type add_time_duration(const time_rep_type& base, | |
| time_duration_type td) | |
| { | |
| if(base.day.is_special() || td.is_special()) { | |
| return split_timedate_system::get_time_rep(base.day, td); | |
| } | |
| if (td.is_negative()) { | |
| time_duration_type td1 = td.invert_sign(); | |
| return subtract_time_duration(base,td1); | |
| } | |
| wrap_int_type day_offset(base.time_of_day.ticks()); | |
| date_duration_type day_overflow(static_cast< typename date_duration_type::duration_rep_type >(day_offset.add(td.ticks()))); | |
| return time_rep_type(base.day+day_overflow, | |
| time_duration_type(0,0,0,day_offset.as_int())); | |
| } | |
| static time_duration_type subtract_times(const time_rep_type& lhs, | |
| const time_rep_type& rhs) | |
| { | |
| date_duration_type dd = lhs.day - rhs.day; | |
| time_duration_type td(dd.days()*24,0,0); //days * 24 hours | |
| time_duration_type td2 = lhs.time_of_day - rhs.time_of_day; | |
| return td+td2; | |
| // return time_rep_type(base.day-dd, base.time_of_day); | |
| } | |
| }; | |
| } } //namespace date_time | |
| #endif |