01 /*
02 * Java Genetic Algorithm Library (jenetics-1.5.0).
03 * Copyright (c) 2007-2013 Franz Wilhelmstötter
04 *
05 * Licensed under the Apache License, Version 2.0 (the "License");
06 * you may not use this file except in compliance with the License.
07 * You may obtain a copy of the License at
08 *
09 * 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 * Author:
18 * Franz Wilhelmstötter (franz.wilhelmstoetter@gmx.at)
19 */
20 package org.jenetics.internal.util;
21
22 import org.jenetics.util.Function;
23 import org.jenetics.util.StaticObject;
24
25
26 /**
27 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
28 * @since 1.2
29 * @version 1.2 — <em>$Date: 2013-09-01 $</em>
30 */
31 public final class TypeBound extends StaticObject {
32
33 public static class Extends<A, B> implements Function<A, B> {
34 private Extends() {
35 }
36
37 @Override
38 @SuppressWarnings("unchecked")
39 public B apply(final A value) {
40 return (B)value;
41 }
42 }
43
44 public static final class Equals<A, B> extends Extends<A, B> {
45 private Equals() {
46 }
47 }
48
49
50
51 public static <T> Equals<T, T> Equals() {
52 return new Equals<>();
53 }
54
55 public static <B, A extends B> Extends<A, B> Extends() {
56 return new Extends<>();
57 }
58
59
60 private TypeBound() {}
61
62
63
64 /*
65
66 static interface Seq<T> {
67 public boolean allTrue(final Equals<T, Boolean> bound);
68 public int sum(final Extends<T, Number> bound);
69 }
70
71 static void main() {
72 final Seq<String> strings = null;
73 final Seq<Boolean> booleans = null;
74 final Seq<Integer> ints = null;
75
76 //strings.allTrue(TypeBound.<Boolean>Equals());
77 booleans.allTrue(TypeBound.<Boolean>Equals());
78
79 ints.sum(TypeBound.<Number, Integer>Extends());
80 }
81 */
82
83 }
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