LCOV - code coverage report
Current view: top level - opt/homebrew/include/boost/date_time - time_system_counted.hpp (source / functions) Hit Total Coverage
Test: total_coverage.info Lines: 41 58 70.7 %
Date: 2026-06-25 07:23:43 Functions: 14 17 82.4 %

          Line data    Source code
       1             : #ifndef DATE_TIME_TIME_SYSTEM_COUNTED_HPP
       2             : #define DATE_TIME_TIME_SYSTEM_COUNTED_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, Bart Garst
       9             :  * $Date$
      10             :  */
      11             : 
      12             : 
      13             : #include <boost/date_time/compiler_config.hpp>
      14             : #include <boost/date_time/time_defs.hpp>
      15             : #include <boost/date_time/special_defs.hpp>
      16             : #include <string>
      17             : 
      18             : 
      19             : namespace boost {
      20             : namespace date_time {
      21             : 
      22             :   //! Time representation that uses a single integer count
      23             :   template<class config>
      24             :   struct counted_time_rep
      25             :   {
      26             :     typedef typename config::int_type   int_type;
      27             :     typedef typename config::date_type  date_type;
      28             :     typedef typename config::impl_type  impl_type;
      29             :     typedef typename date_type::duration_type date_duration_type;
      30             :     typedef typename date_type::calendar_type calendar_type;
      31             :     typedef typename date_type::ymd_type ymd_type;
      32             :     typedef typename config::time_duration_type time_duration_type;
      33             :     typedef typename config::resolution_traits   resolution_traits;
      34             : 
      35             :     BOOST_CXX14_CONSTEXPR
      36       10040 :     counted_time_rep(const date_type& d, const time_duration_type& time_of_day)
      37        5020 :       : time_count_(1)
      38        5020 :     {
      39        5020 :       if(d.is_infinity() || d.is_not_a_date() || time_of_day.is_special()) {
      40        2506 :         time_count_ = time_of_day.get_rep() + d.day_count();
      41             :         //std::cout << time_count_ << std::endl;
      42        2506 :       }
      43             :       else {
      44        2514 :         time_count_ = (d.day_number() * frac_sec_per_day()) + time_of_day.ticks();
      45             :       }
      46       10040 :     }
      47             :     BOOST_CXX14_CONSTEXPR
      48          28 :     explicit counted_time_rep(int_type count) :
      49          14 :       time_count_(count)
      50          28 :     {}
      51             :     BOOST_CXX14_CONSTEXPR
      52           0 :     explicit counted_time_rep(impl_type count) :
      53           0 :       time_count_(count)
      54           0 :     {}
      55             :     BOOST_CXX14_CONSTEXPR
      56             :     date_type date() const
      57             :     {
      58             :       if(time_count_.is_special()) {
      59             :         return date_type(time_count_.as_special());
      60             :       }
      61             :       else {
      62             :         typename calendar_type::date_int_type dc = static_cast<typename calendar_type::date_int_type>(day_count());
      63             :         //std::cout << "time_rep here:" << dc << std::endl;
      64             :         ymd_type ymd = calendar_type::from_day_number(dc);
      65             :         return date_type(ymd);
      66             :       }
      67             :     }
      68             :     //int_type day_count() const
      69             :     BOOST_CXX14_CONSTEXPR
      70             :     unsigned long day_count() const
      71             :     {
      72             :       /* resolution_traits::as_number returns a boost::int64_t &
      73             :        * frac_sec_per_day is also a boost::int64_t so, naturally,
      74             :        * the division operation returns a boost::int64_t.
      75             :        * The static_cast to an unsigned long is ok (results in no data loss)
      76             :        * because frac_sec_per_day is either the number of
      77             :        * microseconds per day, or the number of nanoseconds per day.
      78             :        * Worst case scenario: resolution_traits::as_number returns the
      79             :        * maximum value an int64_t can hold and frac_sec_per_day
      80             :        * is microseconds per day (lowest possible value).
      81             :        * The division operation will then return a value of 106751991 -
      82             :        * easily fitting in an unsigned long.
      83             :        */
      84             :       return static_cast<unsigned long>(resolution_traits::as_number(time_count_) / frac_sec_per_day());
      85             :     }
      86       10012 :     BOOST_CXX14_CONSTEXPR int_type time_count() const
      87             :     {
      88       10012 :       return resolution_traits::as_number(time_count_);
      89             :     }
      90             :     BOOST_CXX14_CONSTEXPR int_type tod() const
      91             :     {
      92             :       return resolution_traits::as_number(time_count_) % frac_sec_per_day();
      93             :     }
      94        2514 :     static BOOST_CXX14_CONSTEXPR int_type frac_sec_per_day()
      95             :     {
      96        2514 :       int_type seconds_per_day = 60*60*24;
      97        2514 :       int_type fractional_sec_per_sec(resolution_traits::res_adjust());
      98        2514 :       return seconds_per_day*fractional_sec_per_sec;
      99             :     }
     100             :     BOOST_CXX14_CONSTEXPR bool is_pos_infinity()const
     101             :     {
     102             :       return impl_type::is_pos_inf(time_count_.as_number());
     103             :     }
     104             :     BOOST_CXX14_CONSTEXPR bool is_neg_infinity()const
     105             :     {
     106             :       return impl_type::is_neg_inf(time_count_.as_number());
     107             :     }
     108        2506 :     BOOST_CXX14_CONSTEXPR bool is_not_a_date_time()const
     109             :     {
     110        2506 :       return impl_type::is_not_a_number(time_count_.as_number());
     111             :     }
     112        5012 :     BOOST_CXX14_CONSTEXPR bool is_special()const
     113             :     {
     114        5012 :       return time_count_.is_special();
     115             :     }
     116           0 :     BOOST_CXX14_CONSTEXPR impl_type get_rep()const
     117             :     {
     118           0 :       return time_count_;
     119             :     }
     120             :   private:
     121             :     impl_type time_count_;
     122             :   };
     123             : 
     124             :   //! An unadjusted time system implementation.
     125             :   template<class time_rep>
     126             :   class counted_time_system
     127             :   {
     128             :    public:
     129             :     typedef time_rep time_rep_type;
     130             :     typedef typename time_rep_type::impl_type impl_type;
     131             :     typedef typename time_rep_type::time_duration_type time_duration_type;
     132             :     typedef typename time_duration_type::fractional_seconds_type fractional_seconds_type;
     133             :     typedef typename time_rep_type::date_type date_type;
     134             :     typedef typename time_rep_type::date_duration_type date_duration_type;
     135             : 
     136             : 
     137        2514 :     template<class T> static BOOST_CXX14_CONSTEXPR void unused_var(const T&) {}
     138             : 
     139             :     static BOOST_CXX14_CONSTEXPR
     140        2514 :     time_rep_type get_time_rep(const date_type& day,
     141             :                                const time_duration_type& tod,
     142             :                                date_time::dst_flags dst=not_dst)
     143             :     {
     144        2514 :       unused_var(dst);
     145        2514 :       return time_rep_type(day, tod);
     146             :     }
     147             : 
     148        2506 :     static BOOST_CXX14_CONSTEXPR time_rep_type get_time_rep(special_values sv)
     149             :     {
     150        2506 :       switch (sv) {
     151             :       case not_a_date_time:
     152        5012 :         return time_rep_type(date_type(not_a_date_time),
     153        2506 :                              time_duration_type(not_a_date_time));
     154             :       case pos_infin:
     155           0 :         return time_rep_type(date_type(pos_infin),
     156           0 :                              time_duration_type(pos_infin));
     157             :       case neg_infin:
     158           0 :         return time_rep_type(date_type(neg_infin),
     159           0 :                              time_duration_type(neg_infin));
     160             :       case max_date_time: {
     161           0 :         time_duration_type td = time_duration_type(24,0,0,0) - time_duration_type(0,0,0,1);
     162           0 :         return time_rep_type(date_type(max_date_time), td);
     163             :       }
     164             :       case min_date_time:
     165           0 :         return time_rep_type(date_type(min_date_time), time_duration_type(0,0,0,0));
     166             : 
     167             :       default:
     168           0 :         return time_rep_type(date_type(not_a_date_time),
     169           0 :                              time_duration_type(not_a_date_time));
     170             : 
     171             :       }
     172             : 
     173        2506 :     }
     174             : 
     175             :     static BOOST_CXX14_CONSTEXPR date_type
     176             :     get_date(const time_rep_type& val)
     177             :     {
     178             :       return val.date();
     179             :     }
     180             :     static BOOST_CXX14_CONSTEXPR
     181             :     time_duration_type get_time_of_day(const time_rep_type& val)
     182             :     {
     183             :       if(val.is_special()) {
     184             :         return time_duration_type(val.get_rep().as_special());
     185             :       }
     186             :       else{
     187             :         return time_duration_type(0,0,0,val.tod());
     188             :       }
     189             :     }
     190             :     static std::string zone_name(const time_rep_type&)
     191             :     {
     192             :       return "";
     193             :     }
     194             :     static BOOST_CXX14_CONSTEXPR bool is_equal(const time_rep_type& lhs, const time_rep_type& rhs)
     195             :     {
     196             :       return (lhs.time_count() == rhs.time_count());
     197             :     }
     198             :     static BOOST_CXX14_CONSTEXPR
     199        2500 :     bool is_less(const time_rep_type& lhs, const time_rep_type& rhs)
     200             :     {
     201        2500 :       return (lhs.time_count() < rhs.time_count());
     202             :     }
     203             :     static BOOST_CXX14_CONSTEXPR
     204             :     time_rep_type add_days(const time_rep_type& base,
     205             :                            const date_duration_type& dd)
     206             :     {
     207             :       if(base.is_special() || dd.is_special()) {
     208             :         return(time_rep_type(base.get_rep() + dd.get_rep()));
     209             :       }
     210             :       else {
     211             :         return time_rep_type(base.time_count() + (dd.days() * time_rep_type::frac_sec_per_day()));
     212             :       }
     213             :     }
     214             :     static BOOST_CXX14_CONSTEXPR
     215             :     time_rep_type subtract_days(const time_rep_type& base,
     216             :                                 const date_duration_type& dd)
     217             :     {
     218             :       if(base.is_special() || dd.is_special()) {
     219             :         return(time_rep_type(base.get_rep() - dd.get_rep()));
     220             :       }
     221             :       else{
     222             :         return time_rep_type(base.time_count() - (dd.days() * time_rep_type::frac_sec_per_day()));
     223             :       }
     224             :     }
     225             :     static BOOST_CXX14_CONSTEXPR
     226             :     time_rep_type subtract_time_duration(const time_rep_type& base,
     227             :                                          const time_duration_type& td)
     228             :     {
     229             :       if(base.is_special() || td.is_special()) {
     230             :         return(time_rep_type(base.get_rep() - td.get_rep()));
     231             :       }
     232             :       else {
     233             :         return time_rep_type(base.time_count() - td.ticks());
     234             :       }
     235             :     }
     236             :     static BOOST_CXX14_CONSTEXPR
     237          14 :     time_rep_type add_time_duration(const time_rep_type& base,
     238             :                                     time_duration_type td)
     239             :     {
     240          14 :       if(base.is_special() || td.is_special()) {
     241           0 :         return(time_rep_type(base.get_rep() + td.get_rep()));
     242             :       }
     243             :       else {
     244          14 :         return time_rep_type(base.time_count() + td.ticks());
     245             :       }
     246          14 :     }
     247             :     static BOOST_CXX14_CONSTEXPR
     248        2499 :     time_duration_type subtract_times(const time_rep_type& lhs,
     249             :                                       const time_rep_type& rhs)
     250             :     {
     251        2499 :       if(lhs.is_special() || rhs.is_special()) {
     252           0 :         return(time_duration_type(
     253           0 :           impl_type::to_special((lhs.get_rep() - rhs.get_rep()).as_number())));
     254             :       }
     255             :       else {
     256        2499 :         fractional_seconds_type fs = lhs.time_count() - rhs.time_count();
     257        2499 :         return time_duration_type(0,0,0,fs);
     258             :       }
     259        2499 :     }
     260             : 
     261             :   };
     262             : 
     263             : 
     264             : } } //namespace date_time
     265             : 
     266             : 
     267             : 
     268             : #endif
     269             : 

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