1// Copyright 2015 CoreOS, Inc.
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7//     http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15package dbus
16
17type set struct {
18	data map[string]bool
19}
20
21func (s *set) Add(value string) {
22	s.data[value] = true
23}
24
25func (s *set) Remove(value string) {
26	delete(s.data, value)
27}
28
29func (s *set) Contains(value string) (exists bool) {
30	_, exists = s.data[value]
31	return
32}
33
34func (s *set) Length() int {
35	return len(s.data)
36}
37
38func (s *set) Values() (values []string) {
39	for val, _ := range s.data {
40		values = append(values, val)
41	}
42	return
43}
44
45func newSet() *set {
46	return &set{make(map[string]bool)}
47}
48