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| author | Remko Tronçon <git@el-tramo.be> | 2009-06-01 08:48:42 (GMT) |
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| committer | Remko Tronçon <git@el-tramo.be> | 2009-06-01 09:24:28 (GMT) |
| commit | 2812bddd81f8a1b804c7460f4e14cd0aa393d129 (patch) | |
| tree | d46294f35150c4f0f43deaf2d31fceaf945ae715 /3rdParty/Boost/boost/date_time/date_duration.hpp | |
| download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 | |
Import.
Diffstat (limited to '3rdParty/Boost/boost/date_time/date_duration.hpp')
| -rw-r--r-- | 3rdParty/Boost/boost/date_time/date_duration.hpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/date_time/date_duration.hpp b/3rdParty/Boost/boost/date_time/date_duration.hpp new file mode 100644 index 0000000..3871aac --- /dev/null +++ b/3rdParty/Boost/boost/date_time/date_duration.hpp @@ -0,0 +1,146 @@ +#ifndef DATE_TIME_DATE_DURATION__ +#define DATE_TIME_DATE_DURATION__ + +/* Copyright (c) 2002,2003 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) $ + */ + + +#include <boost/operators.hpp> +#include <boost/date_time/special_defs.hpp> + +namespace boost { +namespace date_time { + + + //! Duration type with date level resolution + template<class duration_rep_traits> + class date_duration : private + boost::less_than_comparable1< date_duration< duration_rep_traits > + , boost::equality_comparable1< date_duration< duration_rep_traits > + , boost::addable1< date_duration< duration_rep_traits > + , boost::subtractable1< date_duration< duration_rep_traits > + , boost::dividable2< date_duration< duration_rep_traits >, int + > > > > > + { + public: + typedef typename duration_rep_traits::int_type duration_rep_type; + typedef typename duration_rep_traits::impl_type duration_rep; + + //! Construct from a day count + explicit date_duration(duration_rep day_count) : days_(day_count) {}; + + /*! construct from special_values - only works when + * instantiated with duration_traits_adapted */ + date_duration(special_values sv) : + days_(duration_rep::from_special(sv)) + {} + + // copy constructor required for addable<> & subtractable<> + //! Construct from another date_duration (Copy Constructor) + date_duration(const date_duration<duration_rep_traits>& other) : + days_(other.days_) + {} + + //! returns days_ as it's instantiated type - used for streaming + duration_rep get_rep()const + { + return days_; + } + bool is_special()const + { + return days_.is_special(); + } + //! returns days as value, not object. + duration_rep_type days() const + { + return duration_rep_traits::as_number(days_); + } + //! Returns the smallest duration -- used by to calculate 'end' + static date_duration unit() + { + return date_duration<duration_rep_traits>(1); + } + //! Equality + bool operator==(const date_duration& rhs) const + { + return days_ == rhs.days_; + } + //! Less + bool operator<(const date_duration& rhs) const + { + return days_ < rhs.days_; + } + + /* For shortcut operators (+=, -=, etc) simply using + * "days_ += days_" may not work. If instantiated with + * an int_adapter, shortcut operators are not present, + * so this will not compile */ + + //! Subtract another duration -- result is signed + date_duration& operator-=(const date_duration& rhs) + { + //days_ -= rhs.days_; + days_ = days_ - rhs.days_; + return *this; + } + //! Add a duration -- result is signed + date_duration& operator+=(const date_duration& rhs) + { + days_ = days_ + rhs.days_; + return *this; + } + + //! unary- Allows for dd = -date_duration(2); -> dd == -2 + date_duration operator-() const + { + return date_duration<duration_rep_traits>(get_rep() * (-1)); + } + //! Division operations on a duration with an integer. + date_duration& operator/=(int divisor) + { + days_ = days_ / divisor; + return *this; + } + + //! return sign information + bool is_negative() const + { + return days_ < 0; + } + + private: + duration_rep days_; + }; + + + /*! Struct for instantiating date_duration with <b>NO</b> special values + * functionality. Allows for transparent implementation of either + * date_duration<long> or date_duration<int_adapter<long> > */ + struct duration_traits_long + { + typedef long int_type; + typedef long impl_type; + static int_type as_number(impl_type i) { return i; }; + }; + + /*! Struct for instantiating date_duration <b>WITH</b> special values + * functionality. Allows for transparent implementation of either + * date_duration<long> or date_duration<int_adapter<long> > */ + struct duration_traits_adapted + { + typedef long int_type; + typedef boost::date_time::int_adapter<long> impl_type; + static int_type as_number(impl_type i) { return i.as_number(); }; + }; + + +} } //namspace date_time + + +#endif + |