third_party/java/proguard/proguard5.3.3/src/proguard/classfile/editor/BootstrapMethodsAttributeEditor.java

/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare
 *
 * This program 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 program 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 General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 */
package proguard.classfile.editor;

import proguard.classfile.attribute.*;
import proguard.util.ArrayUtil;

/**
 * This class can add bootstrap methods to a given bootstrap methods attribute.
 * Bootstrap methods to be added must have been filled out beforehand.
 *
 * @author Eric Lafortune
 */
public class BootstrapMethodsAttributeEditor
{
    private BootstrapMethodsAttribute targetBootstrapMethodsAttribute;


    /**
     * Creates a new BootstrapMethodsAttributeEditor that will edit bootstrap
     * methods in the given bootstrap methods attribute.
     */
    public BootstrapMethodsAttributeEditor(BootstrapMethodsAttribute targetBootstrapMethodsAttribute)
    {
        this.targetBootstrapMethodsAttribute = targetBootstrapMethodsAttribute;
    }


    /**
     * Adds a given bootstrap method to the bootstrap methods attribute.
     * @return the index of the bootstrap method.
     */
    public int addBootstrapMethodInfo(BootstrapMethodInfo bootstrapMethodInfo)
    {
        targetBootstrapMethodsAttribute.bootstrapMethods =
            (BootstrapMethodInfo[])ArrayUtil.add(targetBootstrapMethodsAttribute.bootstrapMethods,
                                                 targetBootstrapMethodsAttribute.u2bootstrapMethodsCount,
                                                 bootstrapMethodInfo);

        return targetBootstrapMethodsAttribute.u2bootstrapMethodsCount++;
    }
}