author | joehw |
Sun, 13 Aug 2017 21:10:40 -0700 | |
changeset 46174 | 5611d2529b49 |
parent 44797 | 8b3b3b911b8a |
permissions | -rw-r--r-- |
6 | 1 |
/* |
2 |
* reserved comment block |
|
3 |
* DO NOT REMOVE OR ALTER! |
|
4 |
*/ |
|
44797
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
5 |
/* |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
6 |
* Licensed to the Apache Software Foundation (ASF) under one or more |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
7 |
* contributor license agreements. See the NOTICE file distributed with |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
8 |
* this work for additional information regarding copyright ownership. |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
9 |
* The ASF licenses this file to You under the Apache License, Version 2.0 |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
10 |
* (the "License"); you may not use this file except in compliance with |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
11 |
* the License. You may obtain a copy of the License at |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
12 |
* |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
13 |
* http://www.apache.org/licenses/LICENSE-2.0 |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
14 |
* |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
15 |
* Unless required by applicable law or agreed to in writing, software |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
16 |
* distributed under the License is distributed on an "AS IS" BASIS, |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
17 |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
18 |
* See the License for the specific language governing permissions and |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
19 |
* limitations under the License. |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
20 |
*/ |
8b3b3b911b8a
8162572: Update License Header for all JAXP sources
joehw
parents:
25868
diff
changeset
|
21 |
|
6 | 22 |
package com.sun.org.apache.bcel.internal.util; |
23 |
||
46174 | 24 |
import java.io.ByteArrayInputStream; |
25 |
import java.io.DataInputStream; |
|
6 | 26 |
|
27 |
/** |
|
28 |
* Utility class that implements a sequence of bytes which can be read |
|
29 |
* via the `readByte()' method. This is used to implement a wrapper for the |
|
30 |
* Java byte code stream to gain some more readability. |
|
31 |
* |
|
46174 | 32 |
* @version $Id: ByteSequence.java 1747278 2016-06-07 17:28:43Z britter $ |
6 | 33 |
*/ |
34 |
public final class ByteSequence extends DataInputStream { |
|
46174 | 35 |
|
36 |
private final ByteArrayStream byteStream; |
|
37 |
||
38 |
||
39 |
public ByteSequence(final byte[] bytes) { |
|
40 |
super(new ByteArrayStream(bytes)); |
|
41 |
byteStream = (ByteArrayStream) in; |
|
42 |
} |
|
6 | 43 |
|
46174 | 44 |
|
45 |
public final int getIndex() { |
|
46 |
return byteStream.getPosition(); |
|
47 |
} |
|
48 |
||
49 |
||
50 |
final void unreadByte() { |
|
51 |
byteStream.unreadByte(); |
|
52 |
} |
|
6 | 53 |
|
46174 | 54 |
private static final class ByteArrayStream extends ByteArrayInputStream { |
55 |
||
56 |
ByteArrayStream(final byte[] bytes) { |
|
57 |
super(bytes); |
|
58 |
} |
|
6 | 59 |
|
46174 | 60 |
final int getPosition() { |
61 |
// pos is protected in ByteArrayInputStream |
|
62 |
return pos; |
|
63 |
} |
|
64 |
||
65 |
final void unreadByte() { |
|
66 |
if (pos > 0) { |
|
67 |
pos--; |
|
68 |
} |
|
69 |
} |
|
70 |
} |
|
6 | 71 |
} |