1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ossrv_pub/boost_apis/boost/date_time/time.hpp Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,190 @@
1.4 +#ifndef DATE_TIME_TIME_HPP___
1.5 +#define DATE_TIME_TIME_HPP___
1.6 +
1.7 +/* Copyright (c) 2002,2003,2005 CrystalClear Software, Inc.
1.8 + * Use, modification and distribution is subject to the
1.9 + * Boost Software License, Version 1.0. (See accompanying
1.10 + * file LICENSE-1.0 or http://www.boost.org/LICENSE-1.0)
1.11 + * Author: Jeff Garland, Bart Garst
1.12 + * $Date: 2005/04/23 05:39:52 $
1.13 + */
1.14 +
1.15 +
1.16 +/*! @file time.hpp
1.17 + This file contains the interface for the time associated classes.
1.18 +*/
1.19 +#include "boost/date_time/time_defs.hpp"
1.20 +#include "boost/operators.hpp"
1.21 +#include <string>
1.22 +
1.23 +namespace boost {
1.24 +namespace date_time {
1.25 +
1.26 + //! Representation of a precise moment in time, including the date.
1.27 + /*!
1.28 + This class is a skeleton for the interface of a temporal type
1.29 + with a resolution that is higher than a day. It is intended that
1.30 + this class be the base class and that the actual time
1.31 + class be derived using the BN pattern. In this way, the derived
1.32 + class can make decisions such as 'should there be a default constructor'
1.33 + and what should it set its value to, should there be optional constructors
1.34 + say allowing only an time_durations that generate a time from a clock,etc.
1.35 + So, in fact multiple time types can be created for a time_system with
1.36 + different construction policies, and all of them can perform basic
1.37 + operations by only writing a copy constructor. Finally, compiler
1.38 + errors are also shorter.
1.39 +
1.40 + The real behavior of the time class is provided by the time_system
1.41 + template parameter. This class must provide all the logic
1.42 + for addition, subtraction, as well as define all the interface
1.43 + types.
1.44 +
1.45 + */
1.46 +
1.47 + template <class T, class time_system>
1.48 + class base_time : private
1.49 + boost::less_than_comparable<T
1.50 + , boost::equality_comparable<T
1.51 + > >
1.52 + {
1.53 + public:
1.54 + typedef T time_type;
1.55 + typedef typename time_system::time_rep_type time_rep_type;
1.56 + typedef typename time_system::date_type date_type;
1.57 + typedef typename time_system::date_duration_type date_duration_type;
1.58 + typedef typename time_system::time_duration_type time_duration_type;
1.59 + //typedef typename time_system::hms_type hms_type;
1.60 +
1.61 + base_time(const date_type& day,
1.62 + const time_duration_type& td,
1.63 + dst_flags dst=not_dst) :
1.64 + time_(time_system::get_time_rep(day, td, dst))
1.65 + {}
1.66 + base_time(special_values sv) :
1.67 + time_(time_system::get_time_rep(sv))
1.68 + {}
1.69 + base_time(const time_rep_type& rhs) :
1.70 + time_(rhs)
1.71 + {}
1.72 + date_type date() const
1.73 + {
1.74 + return time_system::get_date(time_);
1.75 + }
1.76 + time_duration_type time_of_day() const
1.77 + {
1.78 + return time_system::get_time_of_day(time_);
1.79 + }
1.80 + /*! Optional bool parameter will return time zone as an offset
1.81 + * (ie "+07:00"). Empty string is returned for classes that do
1.82 + * not use a time_zone */
1.83 + std::string zone_name(bool as_offset=false) const
1.84 + {
1.85 + return time_system::zone_name(time_);
1.86 + }
1.87 + /*! Optional bool parameter will return time zone as an offset
1.88 + * (ie "+07:00"). Empty string is returned for classes that do
1.89 + * not use a time_zone */
1.90 + std::string zone_abbrev(bool as_offset=false) const
1.91 + {
1.92 + return time_system::zone_name(time_);
1.93 + }
1.94 + //! An empty string is returned for classes that do not use a time_zone
1.95 + std::string zone_as_posix_string() const
1.96 + {
1.97 + return std::string("");
1.98 + }
1.99 +
1.100 + //! check to see if date is not a value
1.101 + bool is_not_a_date_time() const
1.102 + {
1.103 + return time_.is_not_a_date_time();
1.104 + }
1.105 + //! check to see if date is one of the infinity values
1.106 + bool is_infinity() const
1.107 + {
1.108 + return (is_pos_infinity() || is_neg_infinity());
1.109 + }
1.110 + //! check to see if date is greater than all possible dates
1.111 + bool is_pos_infinity() const
1.112 + {
1.113 + return time_.is_pos_infinity();
1.114 + }
1.115 + //! check to see if date is greater than all possible dates
1.116 + bool is_neg_infinity() const
1.117 + {
1.118 + return time_.is_neg_infinity();
1.119 + }
1.120 + //! check to see if time is a special value
1.121 + bool is_special() const
1.122 + {
1.123 + return(is_not_a_date_time() || is_infinity());
1.124 + }
1.125 + //!Equality operator -- others generated by boost::equality_comparable
1.126 + bool operator==(const time_type& rhs) const
1.127 + {
1.128 + return time_system::is_equal(time_,rhs.time_);
1.129 + }
1.130 + //!Equality operator -- others generated by boost::less_than_comparable
1.131 + bool operator<(const time_type& rhs) const
1.132 + {
1.133 + return time_system::is_less(time_,rhs.time_);
1.134 + }
1.135 + //! difference between two times
1.136 + time_duration_type operator-(const time_type& rhs) const
1.137 + {
1.138 + return time_system::subtract_times(time_, rhs.time_);
1.139 + }
1.140 + //! add date durations
1.141 + time_type operator+(const date_duration_type& dd) const
1.142 + {
1.143 + return time_system::add_days(time_, dd);
1.144 + }
1.145 + time_type operator+=(const date_duration_type& dd)
1.146 + {
1.147 + time_ = (time_system::get_time_rep(date() + dd, time_of_day()));
1.148 + return time_type(time_);
1.149 + }
1.150 + //! subtract date durations
1.151 + time_type operator-(const date_duration_type& dd) const
1.152 + {
1.153 + return time_system::subtract_days(time_, dd);
1.154 + }
1.155 + time_type operator-=(const date_duration_type& dd)
1.156 + {
1.157 + time_ = (time_system::get_time_rep(date() - dd, time_of_day()));
1.158 + return time_type(time_);
1.159 + }
1.160 + //! add time durations
1.161 + time_type operator+(const time_duration_type& td) const
1.162 + {
1.163 + return time_type(time_system::add_time_duration(time_, td));
1.164 + }
1.165 + time_type operator+=(const time_duration_type& td)
1.166 + {
1.167 + time_ = (time_system::get_time_rep(date(), time_of_day() + td));
1.168 + return time_type(time_);
1.169 + }
1.170 + //! subtract time durations
1.171 + time_type operator-(const time_duration_type& rhs) const
1.172 + {
1.173 + return time_system::subtract_time_duration(time_, rhs);
1.174 + }
1.175 + time_type operator-=(const time_duration_type& td)
1.176 + {
1.177 + time_ = (time_system::get_time_rep(date(), time_of_day() - td));
1.178 + return time_type(time_);
1.179 + }
1.180 +
1.181 + protected:
1.182 + time_rep_type time_;
1.183 + };
1.184 +
1.185 +
1.186 +
1.187 +
1.188 +
1.189 +} } //namespace date_time::boost
1.190 +
1.191 +
1.192 +#endif
1.193 +