1 package net.sourceforge.jenesis4java.impl.util;
2
3 /*
4 * #%L
5 * Jenesis 4 Java Code Generator
6 * %%
7 * Copyright (C) 2000 - 2015 jenesis4java
8 * %%
9 * This program is free software: you can redistribute it and/or modify
10 * it under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation, either version 3 of the
12 * License, or (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Lesser Public License for more details.
18 *
19 * You should have received a copy of the GNU General Lesser Public
20 * License along with this program. If not, see
21 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
22 * #L%
23 */
24
25 /**
26 * Copyright (C) 2008, 2010 Richard van Nieuwenhoven - ritchie [at] gmx [dot] at
27 * Copyright (C) 2000, 2001 Paul Cody Johnston - pcj@inxar.org <br>
28 * This file is part of Jenesis4java. Jenesis4java is free software: you can
29 * redistribute it and/or modify it under the terms of the GNU Lesser General
30 * Public License as published by the Free Software Foundation, either version 3
31 * of the License, or (at your option) any later version.<br>
32 * Jenesis4java is distributed in the hope that it will be useful, but WITHOUT
33 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
34 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
35 * details.<br>
36 * You should have received a copy of the GNU Lesser General Public License
37 * along with Jenesis4java. If not, see <http://www.gnu.org/licenses/>.
38 */
39 import java.util.ArrayList;
40 import java.util.Collections;
41 import java.util.List;
42
43 public class ListTypeSelector {
44
45 public static <TYPE> List<TYPE> select(List<TYPE> list) {
46 return Collections.unmodifiableList(list);
47 }
48
49 public static <TYPE, SUBTYPE extends TYPE> List<SUBTYPE> select(List<TYPE> list, Class<SUBTYPE> clazz) {
50 List<SUBTYPE> result = new ArrayList<>();
51 for (TYPE element : list) {
52 if (clazz.isAssignableFrom(element.getClass())) {
53 result.add(clazz.cast(element));
54 }
55 }
56 return Collections.unmodifiableList(result);
57 }
58
59 public static <TYPE, SUBTYPE extends TYPE> List<TYPE> generalize(List<SUBTYPE> list, Class<TYPE> clazz) {
60 List<TYPE> result = new ArrayList<>();
61 for (TYPE element : list) {
62 result.add(element);
63 }
64 return Collections.unmodifiableList(result);
65 }
66 }