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package proxyd
import "sync"
type StringSet struct {
underlying map[string]bool
mtx sync.RWMutex
}
func NewStringSet() *StringSet {
return &StringSet{
underlying: make(map[string]bool),
}
}
func NewStringSetFromStrings(in []string) *StringSet {
underlying := make(map[string]bool)
for _, str := range in {
underlying[str] = true
}
return &StringSet{
underlying: underlying,
}
}
func (s *StringSet) Has(test string) bool {
s.mtx.RLock()
defer s.mtx.RUnlock()
return s.underlying[test]
}
func (s *StringSet) Add(str string) {
s.mtx.Lock()
defer s.mtx.Unlock()
s.underlying[str] = true
}
func (s *StringSet) Entries() []string {
s.mtx.RLock()
defer s.mtx.RUnlock()
out := make([]string, len(s.underlying))
var i int
for entry := range s.underlying {
out[i] = entry
i++
}
return out
}
func (s *StringSet) Extend(in []string) *StringSet {
out := NewStringSetFromStrings(in)
for k := range s.underlying {
out.Add(k)
}
return out
}