AttLineNumberTable.java revision 2ad60cfc28e14ee8f0bb038720836a4696c478ad 
1/*
2 * Copyright (C) 2007 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package com.android.dx.cf.attrib;
18
19import com.android.dx.cf.code.LineNumberList;
20import com.android.dx.util.MutabilityException;
21
22/**
23 * Attribute class for standard <code>LineNumberTable</code> attributes.
24 */
25public final class AttLineNumberTable extends BaseAttribute {
26    /** non-null; attribute name for attributes of this type */
27    public static final String ATTRIBUTE_NAME = "LineNumberTable";
28
29    /** non-null; list of line number entries */
30    private final LineNumberList lineNumbers;
31
32    /**
33     * Constructs an instance.
34     *
35     * @param lineNumbers non-null; list of line number entries
36     */
37    public AttLineNumberTable(LineNumberList lineNumbers) {
38        super(ATTRIBUTE_NAME);
39
40        try {
41            if (lineNumbers.isMutable()) {
42                throw new MutabilityException("lineNumbers.isMutable()");
43            }
44        } catch (NullPointerException ex) {
45            // Translate the exception.
46            throw new NullPointerException("lineNumbers == null");
47        }
48
49        this.lineNumbers = lineNumbers;
50    }
51
52    /** {@inheritDoc} */
53    public int byteLength() {
54        return 8 + 4 * lineNumbers.size();
55    }
56
57    /**
58     * Gets the list of "line number" entries associated with this instance.
59     *
60     * @return non-null; the list
61     */
62    public LineNumberList getLineNumbers() {
63        return lineNumbers;
64    }
65}
66