1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one or more
3 * contributor license agreements. See the NOTICE file distributed with
4 * this work for additional information regarding copyright ownership.
5 * The ASF licenses this file to You under the Apache License, Version 2.0
6 * (the "License"); you may not use this file except in compliance with
7 * the License. You may obtain a copy of the License at
8 *
9 * https://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17 package org.apache.commons.lang3.stream;
18
19 import java.util.stream.IntStream;
20
21 /**
22 * Factory for {@link IntStream}.
23 * <p>
24 * <small> Only a factory for now but could hold other functionality.</small>
25 * </p>
26 *
27 * @since 3.13.0
28 */
29 public class IntStreams {
30
31 /**
32 * Null-safe version of {@link IntStream#of(int[])}.
33 *
34 * @param values the elements of the new stream, may be {@code null}.
35 * @return the new stream on {@code values} or {@link IntStream#empty()}.
36 * @since 3.18.0
37 */
38 @SafeVarargs // Creating a stream from an array is safe
39 public static IntStream of(final int... values) {
40 return values == null ? IntStream.empty() : IntStream.of(values);
41 }
42
43 /**
44 * Shorthand for {@code IntStream.range(0, i)}.
45 *
46 * @param endExclusive the exclusive upper bound.
47 * @return a sequential {@link IntStream} for the range of {@code int} elements.
48 */
49 public static IntStream range(final int endExclusive) {
50 return IntStream.range(0, endExclusive);
51 }
52
53 /**
54 * Shorthand for {@code IntStream.rangeClosed(0, i)}.
55 *
56 * @param endInclusive the inclusive upper bound.
57 * @return a sequential {@link IntStream} for the range of {@code int} elements.
58 */
59 public static IntStream rangeClosed(final int endInclusive) {
60 return IntStream.rangeClosed(0, endInclusive);
61 }
62
63 /**
64 * Make private in 4.0.
65 *
66 * @deprecated TODO Make private in 4.0.
67 */
68 @Deprecated
69 public IntStreams() {
70 // empty
71 }
72 }