| /** |
| * Licensed 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 org.apache.aries.cdi.container.internal.util; |
| |
| import java.util.Collections; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| public class Sets { |
| |
| private Sets() { |
| // no instances |
| } |
| |
| @SafeVarargs |
| public static <T> Set<T> hashSet(T ... elements) { |
| return hashSet0(new HashSet<>(), elements); |
| } |
| |
| @SafeVarargs |
| public static <T> Set<T> hashSet(Set<T> from, T ... elements) { |
| return hashSet0(new HashSet<>(from), elements); |
| } |
| |
| @SafeVarargs |
| public static <T> Set<T> immutableHashSet(T ... elements) { |
| return immutableHashSet0(new HashSet<>(), elements); |
| } |
| |
| @SafeVarargs |
| public static <T> Set<T> immutableHashSet(Set<T> from, T ... elements) { |
| return immutableHashSet0(new HashSet<>(from), elements); |
| } |
| |
| @SafeVarargs |
| private static <T> Set<T> hashSet0(Set<T> set, T ... elements) { |
| for (T t : elements) { |
| set.add(t); |
| } |
| |
| return set; |
| } |
| |
| @SafeVarargs |
| private static <T> Set<T> immutableHashSet0(Set<T> set, T ... elements) { |
| return Collections.unmodifiableSet(hashSet0(set, elements)); |
| } |
| |
| } |