56 lines
821 B
Go
56 lines
821 B
Go
package cid
|
|
|
|
type Set struct {
|
|
set map[string]struct{}
|
|
}
|
|
|
|
func NewSet() *Set {
|
|
return &Set{set: make(map[string]struct{})}
|
|
}
|
|
|
|
func (s *Set) Add(c *Cid) {
|
|
s.set[string(c.Bytes())] = struct{}{}
|
|
}
|
|
|
|
func (s *Set) Has(c *Cid) bool {
|
|
_, ok := s.set[string(c.Bytes())]
|
|
return ok
|
|
}
|
|
|
|
func (s *Set) Remove(c *Cid) {
|
|
delete(s.set, string(c.Bytes()))
|
|
}
|
|
|
|
func (s *Set) Len() int {
|
|
return len(s.set)
|
|
}
|
|
|
|
func (s *Set) Keys() []*Cid {
|
|
out := make([]*Cid, 0, len(s.set))
|
|
for k := range s.set {
|
|
c, _ := Cast([]byte(k))
|
|
out = append(out, c)
|
|
}
|
|
return out
|
|
}
|
|
|
|
func (s *Set) Visit(c *Cid) bool {
|
|
if !s.Has(c) {
|
|
s.Add(c)
|
|
return true
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
func (s *Set) ForEach(f func(c *Cid) error) error {
|
|
for cs := range s.set {
|
|
c, _ := Cast([]byte(cs))
|
|
err := f(c)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return nil
|
|
}
|