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 * http://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
18 package org.apache.commons.io.function;
19
20 /**
21 * Defines package-private constants.
22 */
23 final class Constants {
24
25 /**
26 * No-op singleton.
27 */
28 @SuppressWarnings("rawtypes")
29 static final IOBiConsumer IO_BI_CONSUMER = (t, u) -> {/* No-op */};
30
31 /**
32 * No-op singleton.
33 */
34 static final IORunnable IO_RUNNABLE = () -> {/* No-op */};
35
36 /**
37 * No-op singleton.
38 */
39 @SuppressWarnings("rawtypes")
40 static final IOBiFunction IO_BI_FUNCTION = (t, u) -> null;
41
42 /**
43 * No-op singleton.
44 */
45 @SuppressWarnings("rawtypes")
46 static final IOFunction IO_FUNCTION_ID = t -> t;
47
48 /**
49 * Always false.
50 */
51 static final IOPredicate<Object> IO_PREDICATE_FALSE = t -> false;
52
53 /**
54 * Always true.
55 */
56 static final IOPredicate<Object> IO_PREDICATE_TRUE = t -> true;
57
58 /**
59 * No-op singleton.
60 */
61 @SuppressWarnings("rawtypes")
62 static final IOTriConsumer IO_TRI_CONSUMER = (t, u, v) -> {/* No-op */};
63
64 private Constants() {
65 // We don't want instances
66 }
67
68 }