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gitea/vendor/github.com/petar/GoLLRB/llrb/iterator.go
Thomas Boerger b6a95a8cb3 Integrate public as bindata optionally (#293)
* Dropped unused codekit config

* Integrated dynamic and static bindata for public

* Ignore public bindata

* Add a general generate make task

* Integrated flexible public assets into web command

* Updated vendoring, added all missiong govendor deps

* Made the linter happy with the bindata and dynamic code

* Moved public bindata definition to modules directory

* Ignoring the new bindata path now

* Updated to the new public modules import path

* Updated public bindata command and drop the new prefix
2016-11-30 00:26:36 +08:00

94 lines
2.3 KiB
Go

package llrb
type ItemIterator func(i Item) bool
//func (t *Tree) Ascend(iterator ItemIterator) {
// t.AscendGreaterOrEqual(Inf(-1), iterator)
//}
func (t *LLRB) AscendRange(greaterOrEqual, lessThan Item, iterator ItemIterator) {
t.ascendRange(t.root, greaterOrEqual, lessThan, iterator)
}
func (t *LLRB) ascendRange(h *Node, inf, sup Item, iterator ItemIterator) bool {
if h == nil {
return true
}
if !less(h.Item, sup) {
return t.ascendRange(h.Left, inf, sup, iterator)
}
if less(h.Item, inf) {
return t.ascendRange(h.Right, inf, sup, iterator)
}
if !t.ascendRange(h.Left, inf, sup, iterator) {
return false
}
if !iterator(h.Item) {
return false
}
return t.ascendRange(h.Right, inf, sup, iterator)
}
// AscendGreaterOrEqual will call iterator once for each element greater or equal to
// pivot in ascending order. It will stop whenever the iterator returns false.
func (t *LLRB) AscendGreaterOrEqual(pivot Item, iterator ItemIterator) {
t.ascendGreaterOrEqual(t.root, pivot, iterator)
}
func (t *LLRB) ascendGreaterOrEqual(h *Node, pivot Item, iterator ItemIterator) bool {
if h == nil {
return true
}
if !less(h.Item, pivot) {
if !t.ascendGreaterOrEqual(h.Left, pivot, iterator) {
return false
}
if !iterator(h.Item) {
return false
}
}
return t.ascendGreaterOrEqual(h.Right, pivot, iterator)
}
func (t *LLRB) AscendLessThan(pivot Item, iterator ItemIterator) {
t.ascendLessThan(t.root, pivot, iterator)
}
func (t *LLRB) ascendLessThan(h *Node, pivot Item, iterator ItemIterator) bool {
if h == nil {
return true
}
if !t.ascendLessThan(h.Left, pivot, iterator) {
return false
}
if !iterator(h.Item) {
return false
}
if less(h.Item, pivot) {
return t.ascendLessThan(h.Left, pivot, iterator)
}
return true
}
// DescendLessOrEqual will call iterator once for each element less than the
// pivot in descending order. It will stop whenever the iterator returns false.
func (t *LLRB) DescendLessOrEqual(pivot Item, iterator ItemIterator) {
t.descendLessOrEqual(t.root, pivot, iterator)
}
func (t *LLRB) descendLessOrEqual(h *Node, pivot Item, iterator ItemIterator) bool {
if h == nil {
return true
}
if less(h.Item, pivot) || !less(pivot, h.Item) {
if !t.descendLessOrEqual(h.Right, pivot, iterator) {
return false
}
if !iterator(h.Item) {
return false
}
}
return t.descendLessOrEqual(h.Left, pivot, iterator)
}