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authorRemko Tronçon <git@el-tramo.be>2009-06-01 08:48:42 (GMT)
committerRemko Tronçon <git@el-tramo.be>2009-06-01 09:24:28 (GMT)
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treed46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/date_time/time.hpp
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+#ifndef DATE_TIME_TIME_HPP___
+#define DATE_TIME_TIME_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: 2008-11-12 14:37:53 -0500 (Wed, 12 Nov 2008) $
+ */
+
+
+/*! @file time.hpp
+ This file contains the interface for the time associated classes.
+*/
+#include <string>
+#include <boost/operators.hpp>
+#include <boost/date_time/time_defs.hpp>
+#include <boost/date_time/special_defs.hpp>
+
+namespace boost {
+namespace date_time {
+
+ //! Representation of a precise moment in time, including the date.
+ /*!
+ This class is a skeleton for the interface of a temporal type
+ with a resolution that is higher than a day. It is intended that
+ this class be the base class and that the actual time
+ class be derived using the BN pattern. In this way, the derived
+ class can make decisions such as 'should there be a default constructor'
+ and what should it set its value to, should there be optional constructors
+ say allowing only an time_durations that generate a time from a clock,etc.
+ So, in fact multiple time types can be created for a time_system with
+ different construction policies, and all of them can perform basic
+ operations by only writing a copy constructor. Finally, compiler
+ errors are also shorter.
+
+ The real behavior of the time class is provided by the time_system
+ template parameter. This class must provide all the logic
+ for addition, subtraction, as well as define all the interface
+ types.
+
+ */
+
+ template <class T, class time_system>
+ class base_time : private
+ boost::less_than_comparable<T
+ , boost::equality_comparable<T
+ > >
+ {
+ public:
+ typedef T time_type;
+ typedef typename time_system::time_rep_type time_rep_type;
+ typedef typename time_system::date_type date_type;
+ typedef typename time_system::date_duration_type date_duration_type;
+ typedef typename time_system::time_duration_type time_duration_type;
+ //typedef typename time_system::hms_type hms_type;
+
+ base_time(const date_type& day,
+ const time_duration_type& td,
+ dst_flags dst=not_dst) :
+ time_(time_system::get_time_rep(day, td, dst))
+ {}
+ base_time(special_values sv) :
+ time_(time_system::get_time_rep(sv))
+ {}
+ base_time(const time_rep_type& rhs) :
+ time_(rhs)
+ {}
+ date_type date() const
+ {
+ return time_system::get_date(time_);
+ }
+ time_duration_type time_of_day() const
+ {
+ return time_system::get_time_of_day(time_);
+ }
+ /*! Optional bool parameter will return time zone as an offset
+ * (ie "+07:00"). Empty string is returned for classes that do
+ * not use a time_zone */
+ std::string zone_name(bool /*as_offset*/=false) const
+ {
+ return time_system::zone_name(time_);
+ }
+ /*! Optional bool parameter will return time zone as an offset
+ * (ie "+07:00"). Empty string is returned for classes that do
+ * not use a time_zone */
+ std::string zone_abbrev(bool /*as_offset*/=false) const
+ {
+ return time_system::zone_name(time_);
+ }
+ //! An empty string is returned for classes that do not use a time_zone
+ std::string zone_as_posix_string() const
+ {
+ return std::string();
+ }
+
+ //! check to see if date is not a value
+ bool is_not_a_date_time() const
+ {
+ return time_.is_not_a_date_time();
+ }
+ //! check to see if date is one of the infinity values
+ bool is_infinity() const
+ {
+ return (is_pos_infinity() || is_neg_infinity());
+ }
+ //! check to see if date is greater than all possible dates
+ bool is_pos_infinity() const
+ {
+ return time_.is_pos_infinity();
+ }
+ //! check to see if date is greater than all possible dates
+ bool is_neg_infinity() const
+ {
+ return time_.is_neg_infinity();
+ }
+ //! check to see if time is a special value
+ bool is_special() const
+ {
+ return(is_not_a_date_time() || is_infinity());
+ }
+ //!Equality operator -- others generated by boost::equality_comparable
+ bool operator==(const time_type& rhs) const
+ {
+ return time_system::is_equal(time_,rhs.time_);
+ }
+ //!Equality operator -- others generated by boost::less_than_comparable
+ bool operator<(const time_type& rhs) const
+ {
+ return time_system::is_less(time_,rhs.time_);
+ }
+ //! difference between two times
+ time_duration_type operator-(const time_type& rhs) const
+ {
+ return time_system::subtract_times(time_, rhs.time_);
+ }
+ //! add date durations
+ time_type operator+(const date_duration_type& dd) const
+ {
+ return time_system::add_days(time_, dd);
+ }
+ time_type operator+=(const date_duration_type& dd)
+ {
+ time_ = (time_system::get_time_rep(date() + dd, time_of_day()));
+ return time_type(time_);
+ }
+ //! subtract date durations
+ time_type operator-(const date_duration_type& dd) const
+ {
+ return time_system::subtract_days(time_, dd);
+ }
+ time_type operator-=(const date_duration_type& dd)
+ {
+ time_ = (time_system::get_time_rep(date() - dd, time_of_day()));
+ return time_type(time_);
+ }
+ //! add time durations
+ time_type operator+(const time_duration_type& td) const
+ {
+ return time_type(time_system::add_time_duration(time_, td));
+ }
+ time_type operator+=(const time_duration_type& td)
+ {
+ time_ = (time_system::get_time_rep(date(), time_of_day() + td));
+ return time_type(time_);
+ }
+ //! subtract time durations
+ time_type operator-(const time_duration_type& rhs) const
+ {
+ return time_system::subtract_time_duration(time_, rhs);
+ }
+ time_type operator-=(const time_duration_type& td)
+ {
+ time_ = (time_system::get_time_rep(date(), time_of_day() - td));
+ return time_type(time_);
+ }
+
+ protected:
+ time_rep_type time_;
+ };
+
+
+
+
+
+} } //namespace date_time::boost
+
+
+#endif
+