/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package model

type Set map[string]struct{}

func NewSet(values ...string) Set {
	s := make(Set, len(values))
	s.Add(values...)
	return s
}

func (s Set) Add(values ...string) {
	for _, v := range values {
		s[v] = struct{}{}
	}
}

func (s Set) Contains(value string) bool {
	_, ok := s[value]
	return ok
}

func (s Set) Values() []string {
	values := make([]string, 0, len(s))
	for k := range s {
		values = append(values, k)
	}
	return values
}
