1 package org.sentrysoftware.jawk.jrt;
2
3 /*-
4 * ╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲
5 * Jawk
6 * ჻჻჻჻჻჻
7 * Copyright (C) 2006 - 2023 Sentry Software
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 * ╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱╲╱
23 */
24
25 import java.util.ArrayList;
26 import java.util.List;
27 import java.util.Set;
28
29 /**
30 * Implement the KeyList interface with an ArrayList.
31 *
32 * @author Danny Daglas
33 */
34 //public class KeyListImpl extends ArrayList<Object> implements KeyList
35 public class KeyListImpl implements KeyList {
36
37 private List<Object> list;
38
39 /**
40 * Convert the set to a KeyList.
41 * We could have used an ArrayList directly. However, tagging
42 * the implementation with a KeyList interface improves type
43 * checking within the parsing / semantic analysis phase.
44 *
45 * @param set a {@link java.util.Set} object
46 */
47 public KeyListImpl(Set<Object> set) {
48 //super(set);
49 list = new ArrayList<Object>(set);
50 }
51
52 /** {@inheritDoc} */
53 @Override
54 public final Object getFirstAndRemove() {
55 return list.remove(0);
56 }
57
58 /** {@inheritDoc} */
59 @Override
60 public int size() {
61 return list.size();
62 }
63 }