1 /*
2  * ProGuard -- shrinking, optimization, obfuscation, and preverification
3  *             of Java bytecode.
4  *
5  * Copyright (c) 2002-2014 Eric Lafortune (eric@graphics.cornell.edu)
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License as published by the Free
9  * Software Foundation; either version 2 of the License, or (at your option)
10  * any later version.
11  *
12  * This program is distributed in the hope that it will be useful, but WITHOUT
13  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14  * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15  * more details.
16  *
17  * You should have received a copy of the GNU General Public License along
18  * with this program; if not, write to the Free Software Foundation, Inc.,
19  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20  */
21 package proguard.classfile.attribute;
22 
23 import proguard.classfile.*;
24 import proguard.classfile.attribute.visitor.*;
25 
26 /**
27  * This Attribute represents a local variable table attribute.
28  *
29  * @author Eric Lafortune
30  */
31 public class LocalVariableTableAttribute extends Attribute
32 {
33     public int                 u2localVariableTableLength;
34     public LocalVariableInfo[] localVariableTable;
35 
36 
37     /**
38      * Creates an uninitialized LocalVariableTableAttribute.
39      */
LocalVariableTableAttribute()40     public LocalVariableTableAttribute()
41     {
42     }
43 
44 
45     /**
46      * Creates an initialized LocalVariableTableAttribute.
47      */
LocalVariableTableAttribute(int u2attributeNameIndex, int u2localVariableTableLength, LocalVariableInfo[] localVariableTable)48     public LocalVariableTableAttribute(int                 u2attributeNameIndex,
49                                        int                 u2localVariableTableLength,
50                                        LocalVariableInfo[] localVariableTable)
51     {
52         super(u2attributeNameIndex);
53 
54         this.u2localVariableTableLength = u2localVariableTableLength;
55         this.localVariableTable         = localVariableTable;
56     }
57 
58 
59     // Implementations for Attribute.
60 
accept(Clazz clazz, Method method, CodeAttribute codeAttribute, AttributeVisitor attributeVisitor)61     public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, AttributeVisitor attributeVisitor)
62     {
63         attributeVisitor.visitLocalVariableTableAttribute(clazz, method, codeAttribute, this);
64     }
65 
66 
67     /**
68      * Applies the given visitor to all local variables.
69      */
localVariablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfoVisitor localVariableInfoVisitor)70     public void localVariablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfoVisitor localVariableInfoVisitor)
71     {
72         for (int index = 0; index < u2localVariableTableLength; index++)
73         {
74             // We don't need double dispatching here, since there is only one
75             // type of LocalVariableInfo.
76             localVariableInfoVisitor.visitLocalVariableInfo(clazz, method, codeAttribute, localVariableTable[index]);
77         }
78     }
79 }
80