01 /*
02 * Java Genetic Algorithm Library (jenetics-1.6.0).
03 * Copyright (c) 2007-2014 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.util;
21
22 /**
23 * Contains factory (methods) for some 'primitive' types.
24 *
25 * @author <a href="mailto:franz.wilhelmstoetter@gmx.at">Franz Wilhelmstötter</a>
26 * @since 1.0
27 * @version 1.0 — <em>$Date: 2014-02-27 $</em>
28 *
29 * @deprecated Will be (re)moved; internal use only.
30 */
31 @Deprecated
32 public final class factories extends StaticObject {
33 private factories() {}
34
35 /**
36 * Return an integer factory which creates an integer sequence starting with
37 * zero an with step one.
38 *
39 * @return an integer factory.
40 */
41 public static Factory<Integer> Int() {
42 return Int(1);
43 }
44
45 /**
46 * Return an integer factory which creates an integer sequence starting with
47 * zero an with the given {@code step}.
48 *
49 * @param step the gap between the generated integers.
50 * @return an integer factory.
51 */
52 public static Factory<Integer> Int(final int step) {
53 return Int(0, step);
54 }
55
56 /**
57 * Return an integer factory which creates an integer sequence starting with
58 * {@code start} an with the given {@code step}.
59 *
60 * @param step the gap between the generated integers.
61 * @return an integer factory.
62 */
63 public static Factory<Integer> Int(final int start, final int step) {
64 return new Factory<Integer>() {
65 private int _value = start;
66
67 @Override
68 public Integer newInstance() {
69 return next();
70 }
71
72 private int next() {
73 final int next = _value;
74 _value += step;
75 return next;
76 }
77 };
78 }
79
80 }
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