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forgejo/vendor/github.com/RoaringBitmap/roaring/shortiterator.go
2019-11-27 11:23:33 +02:00

52 lines
865 B
Go
Vendored

package roaring
type shortIterable interface {
hasNext() bool
next() uint16
}
type shortPeekable interface {
shortIterable
peekNext() uint16
advanceIfNeeded(minval uint16)
}
type shortIterator struct {
slice []uint16
loc int
}
func (si *shortIterator) hasNext() bool {
return si.loc < len(si.slice)
}
func (si *shortIterator) next() uint16 {
a := si.slice[si.loc]
si.loc++
return a
}
func (si *shortIterator) peekNext() uint16 {
return si.slice[si.loc]
}
func (si *shortIterator) advanceIfNeeded(minval uint16) {
if si.hasNext() && si.peekNext() < minval {
si.loc = advanceUntil(si.slice, si.loc, len(si.slice), minval)
}
}
type reverseIterator struct {
slice []uint16
loc int
}
func (si *reverseIterator) hasNext() bool {
return si.loc >= 0
}
func (si *reverseIterator) next() uint16 {
a := si.slice[si.loc]
si.loc--
return a
}