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added some additional calculation interfaces

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[SVN r17608]
This commit is contained in:
Jeff Garland
2003-02-23 21:09:45 +00:00
parent dc8421ffd2
commit f044b1c8cd
1 changed files with 77 additions and 0 deletions
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77
include/boost/date_time/period.hpp
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@@ -75,6 +75,9 @@ namespace date_time {
bool contains(const point_rep& point) const;
bool contains(const period& other) const;
bool intersects(const period& other) const;
bool is_adjacent(const period& other) const;
bool is_before(const point_rep& point) const;
bool is_after(const point_rep& point) const;
period intersection(const period& other) const;
period merge(const period& other) const;
private:
@@ -190,7 +193,81 @@ namespace date_time {
}
//! True if periods are next to each other without a gap.
/* In the example below, p1 and p2 are adjacent, but p3 is not adjacent
* with either of p1 or p2.
*@code
* [-p1-)
* [-p2-)
* [-p3-)
*@endcode
*/
template<class point_rep, class duration_rep>
inline
bool
period<point_rep,duration_rep>::is_adjacent(const period<point_rep,duration_rep>& other) const
{
return (other.begin() == end() ||
begin_ == other.end());
}
//! True if all of the period is prior or t < start
/* In the example below only point 1 would evaluate to true.
*@code
* [---------])
* ^ ^ ^ ^ ^
* 1 2 3 4 5
*
*@endcode
*/
template<class point_rep, class duration_rep>
inline
bool
period<point_rep,duration_rep>::is_after(const point_rep& t) const
{
if (is_null())
{
return false; //null period isn't after
}
return t < begin_;
}
//! True if all of the period is prior to the passed point or end <= t
/* In the example below points 4 and 5 return true.
*@code
* [---------])
* ^ ^ ^ ^ ^
* 1 2 3 4 5
*
*@endcode
*/
template<class point_rep, class duration_rep>
inline
bool
period<point_rep,duration_rep>::is_before(const point_rep& t) const
{
if (is_null())
{
return false; //null period isn't before anything
}
return last_ < t;
}
//! True if the periods overlap in any way
/* In the example below p1 intersects with p2, p4, and p6.
*@code
* [---p1---)
* [---p2---)
* [---p3---)
* [---p4---)
* [-p5-)
* [-p6-)
*@endcode
*/
template<class point_rep, class duration_rep>
inline
bool period<point_rep,duration_rep>::intersects(const period<point_rep,duration_rep>& other) const