github.com/lusis/distribution@v2.0.1+incompatible/registry/auth/token/stringset.go (about)

     1  package token
     2  
     3  // StringSet is a useful type for looking up strings.
     4  type stringSet map[string]struct{}
     5  
     6  // NewStringSet creates a new StringSet with the given strings.
     7  func newStringSet(keys ...string) stringSet {
     8  	ss := make(stringSet, len(keys))
     9  	ss.add(keys...)
    10  	return ss
    11  }
    12  
    13  // Add inserts the given keys into this StringSet.
    14  func (ss stringSet) add(keys ...string) {
    15  	for _, key := range keys {
    16  		ss[key] = struct{}{}
    17  	}
    18  }
    19  
    20  // Contains returns whether the given key is in this StringSet.
    21  func (ss stringSet) contains(key string) bool {
    22  	_, ok := ss[key]
    23  	return ok
    24  }
    25  
    26  // Keys returns a slice of all keys in this StringSet.
    27  func (ss stringSet) keys() []string {
    28  	keys := make([]string, 0, len(ss))
    29  
    30  	for key := range ss {
    31  		keys = append(keys, key)
    32  	}
    33  
    34  	return keys
    35  }