Coverage Summary for Class: BitSet (co.rsk.vm)
Class |
Class, %
|
Method, %
|
Line, %
|
BitSet |
100%
(1/1)
|
80%
(4/5)
|
80%
(16/20)
|
1 /*
2 * This file is part of RskJ
3 * Copyright (C) 2017 RSK Labs Ltd.
4 *
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU Lesser General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
17 */
18
19 package co.rsk.vm;
20
21 /**
22 * Created by ajlopez on 29/04/2017.
23 */
24 public class BitSet {
25 private byte[] bytes;
26 private int size;
27
28 public BitSet(int size) {
29 if (size < 0) {
30 throw new IllegalArgumentException(String.format("Negative size: %s", size));
31 }
32
33 this.size = size;
34 int bsize = (size + 7) / 8;
35 this.bytes = new byte[bsize];
36 }
37
38 public void set(int position) {
39 if (position < 0 || position >= this.size) {
40 throw new IndexOutOfBoundsException(String.format("Index: %s, Size: %s", position, this.size));
41 }
42
43 int offset = position / 8;
44 int bitoffset = position % 8;
45
46 this.bytes[offset] |= 1 << bitoffset;
47 }
48
49 public boolean get(int position) {
50 if (position < 0 || position >= this.size) {
51 throw new IndexOutOfBoundsException(String.format("Index: %s, Size: %s", position, this.size));
52 }
53
54 int offset = position / 8;
55 int bitoffset = position % 8;
56
57 return (this.bytes[offset] & 0xff & (1 << bitoffset)) != 0;
58 }
59
60 public int size() {
61 return this.size;
62 }
63
64 protected byte[] getBytes() {
65 return this.bytes;
66 }
67 }