github.com/neatio-net/neatio@v1.7.3-0.20231114194659-f4d7a2226baa/utilities/common/prque/prque.go (about)

     1  package prque
     2  
     3  import (
     4  	"container/heap"
     5  )
     6  
     7  type Prque struct {
     8  	cont *sstack
     9  }
    10  
    11  func New(setIndex setIndexCallback) *Prque {
    12  	return &Prque{newSstack(setIndex)}
    13  }
    14  
    15  func (p *Prque) Push(data interface{}, priority int64) {
    16  	heap.Push(p.cont, &item{data, priority})
    17  }
    18  
    19  func (p *Prque) Pop() (interface{}, int64) {
    20  	item := heap.Pop(p.cont).(*item)
    21  	return item.value, item.priority
    22  }
    23  
    24  func (p *Prque) PopItem() interface{} {
    25  	return heap.Pop(p.cont).(*item).value
    26  }
    27  
    28  func (p *Prque) Remove(i int) interface{} {
    29  	if i < 0 {
    30  		return nil
    31  	}
    32  	return heap.Remove(p.cont, i)
    33  }
    34  
    35  func (p *Prque) Empty() bool {
    36  	return p.cont.Len() == 0
    37  }
    38  
    39  func (p *Prque) Size() int {
    40  	return p.cont.Len()
    41  }
    42  
    43  func (p *Prque) Reset() {
    44  	*p = *New(p.cont.setIndex)
    45  }