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