69 lines
1.8 KiB
Go
69 lines
1.8 KiB
Go
package interval
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import (
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"math"
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)
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const (
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defaultMinLow = 0
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defaultMaxHigh = math.MaxInt64
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)
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// Intervals is an interface to handle Interval structures discovering the existence of gaps or overlays
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type Intervals interface {
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Add(itvl *Interval)
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// Sort sorts the intervals list by the Low property (ascending)
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Sort()
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// HasGaps returns true if exists gaps for the introduced intervals between MinLow and MaxHigh
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HasGaps() bool
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// Get first sorts (if necessary) and then returns the interval list
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Get() []*Interval
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// Gaps first sorts (if necessary) and then returns the interval gaps
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Gaps() []*Interval
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// Merge first sorts (if necessary) and then fussion together overlapped intervals
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Merge() []*Interval
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// HasOverlapped returns true if exists overlapping for the introduced intervals
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HasOverlapped() bool
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// Overlapped first sorts (if necessary) and then returns the overlapped intervals
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Overlapped() []*Interval
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// FindIntervalsForValue returns all the intervals which contains the passed value
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FindIntervalsForValue(value int) []*Interval
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// Report first sorts (if necessary) and then creates a report of the interval sequence
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Report() string
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}
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// intervals implements Intervals interface
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type intervals struct {
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Intervals []*Interval
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GapsList []*Interval
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OverlappedList []*Interval
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MergeList []*Interval
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MinLow int
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MaxHigh int
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Sorted bool
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}
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// NewIntervalsDefault is a constructor that returns an instance of the Intervals interface with default values
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func NewIntervalsDefault() Intervals {
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return NewIntervals(defaultMinLow, defaultMaxHigh)
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}
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// NewIntervals is a constructor that returns an instance of the Intervals interface
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func NewIntervals(minLow int, maxHigh int) Intervals {
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return &intervals{
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MinLow: minLow,
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MaxHigh: maxHigh,
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Intervals: []*Interval{},
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Sorted: false,
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}
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}
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