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 /**
26 * Tracks whether we are within a range defined by a pair of condition:
27 * <ul>
28 * <li>startCondition
29 * <li>endCondition
30 * </ul>
31 */
32 public class ConditionPair {
33
34 private boolean within = false;
35
36 /**
37 * <p>Constructor for ConditionPair.</p>
38 */
39 public ConditionPair() {}
40
41 /**
42 * Update the status of the condition pair according to
43 * whether the begin and end conditions match or not
44 *
45 * @param startMatches True if the start condition is true, which means
46 * we're entering the range
47 * @param endMatches True if the end condition is true, which means
48 * we're leaving the range
49 * @return wether we're within the range
50 */
51 public boolean update(boolean startMatches, boolean endMatches) {
52
53 boolean previousWithin = within;
54
55 if (startMatches) {
56 within = true;
57 }
58 if (endMatches) {
59 within = false;
60 }
61 return startMatches || previousWithin;
62 }
63
64 }