forked from TrueCloudLab/restic
70 lines
1.1 KiB
Go
70 lines
1.1 KiB
Go
package backend
|
|
|
|
// IDSet is a set of IDs.
|
|
type IDSet map[ID]struct{}
|
|
|
|
// NewIDSet returns a new IDSet, populated with ids.
|
|
func NewIDSet(ids ...ID) IDSet {
|
|
m := make(IDSet)
|
|
for _, id := range ids {
|
|
m[id] = struct{}{}
|
|
}
|
|
|
|
return m
|
|
}
|
|
|
|
// Has returns true iff id is contained in the set.
|
|
func (s IDSet) Has(id ID) bool {
|
|
_, ok := s[id]
|
|
return ok
|
|
}
|
|
|
|
// Insert adds id to the set.
|
|
func (s IDSet) Insert(id ID) {
|
|
s[id] = struct{}{}
|
|
}
|
|
|
|
// Delete removes id from the set.
|
|
func (s IDSet) Delete(id ID) {
|
|
delete(s, id)
|
|
}
|
|
|
|
// List returns a slice of all IDs in the set.
|
|
func (s IDSet) List() IDs {
|
|
list := make(IDs, 0, len(s))
|
|
for id := range s {
|
|
list = append(list, id)
|
|
}
|
|
|
|
return list
|
|
}
|
|
|
|
// Equals returns true iff s equals other.
|
|
func (s IDSet) Equals(other IDSet) bool {
|
|
if len(s) != len(other) {
|
|
return false
|
|
}
|
|
|
|
for id := range s {
|
|
if _, ok := other[id]; !ok {
|
|
return false
|
|
}
|
|
}
|
|
|
|
for id := range other {
|
|
if _, ok := s[id]; !ok {
|
|
return false
|
|
}
|
|
}
|
|
|
|
return true
|
|
}
|
|
|
|
func (s IDSet) String() string {
|
|
str := s.List().String()
|
|
if len(str) < 2 {
|
|
return "{}"
|
|
}
|
|
|
|
return "{" + str[1:len(str)-1] + "}"
|
|
}
|