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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_iterator.hpp | |
download | swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.zip swift-contrib-2812bddd81f8a1b804c7460f4e14cd0aa393d129.tar.bz2 |
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Diffstat (limited to '3rdParty/Boost/boost/date_time/date_iterator.hpp')
-rw-r--r-- | 3rdParty/Boost/boost/date_time/date_iterator.hpp | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/date_time/date_iterator.hpp b/3rdParty/Boost/boost/date_time/date_iterator.hpp new file mode 100644 index 0000000..284dc74 --- /dev/null +++ b/3rdParty/Boost/boost/date_time/date_iterator.hpp @@ -0,0 +1,101 @@ +#ifndef DATE_ITERATOR_HPP___ +#define DATE_ITERATOR_HPP___ + +/* 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: 2008-02-27 15:00:24 -0500 (Wed, 27 Feb 2008) $ + */ + +#include <iterator> + +namespace boost { +namespace date_time { + //! An iterator over dates with varying resolution (day, week, month, year, etc) + enum date_resolutions {day, week, months, year, decade, century, NumDateResolutions}; + + //! Base date iterator type + /*! This class provides the skeleton for the creation of iterators. + * New and interesting interators can be created by plugging in a new + * function that derives the next value from the current state. + * generation of various types of -based information. + * + * <b>Template Parameters</b> + * + * <b>date_type</b> + * + * The date_type is a concrete date_type. The date_type must + * define a duration_type and a calendar_type. + */ + template<class date_type> + class date_itr_base { + // works, but benefit unclear at the moment + // class date_itr_base : public std::iterator<std::input_iterator_tag, + // date_type, void, void, void>{ + public: + typedef typename date_type::duration_type duration_type; + typedef date_type value_type; + typedef std::input_iterator_tag iterator_category; + + date_itr_base(date_type d) : current_(d) {} + virtual ~date_itr_base() {}; + date_itr_base& operator++() + { + current_ = current_ + get_offset(current_); + return *this; + } + date_itr_base& operator--() + { + current_ = current_ + get_neg_offset(current_); + return *this; + } + virtual duration_type get_offset(const date_type& current) const=0; + virtual duration_type get_neg_offset(const date_type& current) const=0; + date_type operator*() {return current_;}; + date_type* operator->() {return ¤t_;}; + bool operator< (const date_type& d) {return current_ < d;} + bool operator<= (const date_type& d) {return current_ <= d;} + bool operator> (const date_type& d) {return current_ > d;} + bool operator>= (const date_type& d) {return current_ >= d;} + bool operator== (const date_type& d) {return current_ == d;} + bool operator!= (const date_type& d) {return current_ != d;} + private: + date_type current_; + }; + + //! Overrides the base date iterator providing hook for functors + /* + * <b>offset_functor</b> + * + * The offset functor must define a get_offset function that takes the + * current point in time and calculates and offset. + * + */ + template<class offset_functor, class date_type> + class date_itr : public date_itr_base<date_type> { + public: + typedef typename date_type::duration_type duration_type; + date_itr(date_type d, int factor=1) : + date_itr_base<date_type>(d), + of_(factor) + {} + private: + virtual duration_type get_offset(const date_type& current) const + { + return of_.get_offset(current); + } + virtual duration_type get_neg_offset(const date_type& current) const + { + return of_.get_neg_offset(current); + } + offset_functor of_; + }; + + + +} } //namespace date_time + + +#endif |