1 /*
2 * Grapht, an open source dependency injector.
3 * Copyright 2014-2015 various contributors (see CONTRIBUTORS.txt)
4 * Copyright 2010-2014 Regents of the University of Minnesota
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU Lesser General Public License as
8 * published by the Free Software Foundation; either version 2.1 of the
9 * License, or (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
13 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
14 * details.
15 *
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc., 51
18 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 */
20 package org.grouplens.grapht.util;
21
22 import java.lang.reflect.ParameterizedType;
23 import java.lang.reflect.Type;
24 import java.util.Arrays;
25
26 class ParameterizedTypeImpl implements ParameterizedType {
27 private final Class<?> rawType;
28 private final Type[] arguments;
29
30 @SuppressWarnings("PMD.ArrayIsStoredDirectly")
31 ParameterizedTypeImpl(Class<?> rawType, Type[] arguments) {
32 this.rawType = rawType;
33 this.arguments = arguments;
34 }
35
36 @Override
37 public Type[] getActualTypeArguments() {
38 // defensive copy
39 return Arrays.copyOf(arguments, arguments.length);
40 }
41
42 @Override
43 public Type getRawType() {
44 return rawType;
45 }
46
47 @Override
48 public Type getOwnerType() {
49 return null;
50 }
51
52 @Override
53 public boolean equals(Object o) {
54 if (!(o instanceof ParameterizedType)) {
55 return false;
56 }
57 ParameterizedType t = (ParameterizedType) o;
58 return t.getRawType().equals(rawType) &&
59 t.getOwnerType() == null &&
60 Arrays.equals(arguments, t.getActualTypeArguments());
61 }
62
63 @Override
64 public int hashCode() {
65 return rawType.hashCode() ^ Arrays.hashCode(arguments);
66 }
67 }