localvariabletableattribute.java

ProGuard 是一个免费的 Java类文件的压缩

/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2007 Eric Lafortune ([e-mail])
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This library is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
 * for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation,
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.attribute;

import proguard.classfile.*;
import proguard.classfile.attribute.visitor.*;

import java.io.*;

/**
 * This Attribute represents a local variable table attribute.
 *
 * @author Eric Lafortune
 */
public class LocalVariableTableAttribute extends Attribute
{
    public int                 u2localVariableTableLength;
    public LocalVariableInfo[] localVariableTable;


    /**
     * Creates an uninitialized LocalVariableTableAttribute.
     */
    public LocalVariableTableAttribute()
    {
    }


    /**
     * Returns the array of local variable table entries.
     */
    protected LocalVariableInfo[] getLocalVariableTable() throws Exception
    {
        return localVariableTable;
    }


    // Implementations for Attribute.

    public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, AttributeVisitor attributeVisitor)
    {
        attributeVisitor.visitLocalVariableTableAttribute(clazz, method, codeAttribute, this);
    }


    /**
     * Applies the given visitor to all local variables.
     */
    public void localVariablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, LocalVariableInfoVisitor localVariableInfoVisitor)
    {
        for (int index = 0; index < u2localVariableTableLength; index++)
        {
            // We don't need double dispatching here, since there is only one
            // type of LocalVariableInfo.
            localVariableInfoVisitor.visitLocalVariableInfo(clazz, method, codeAttribute, localVariableTable[index]);
        }
    }
}