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/*
 * ProGuard -- shrinking, optimization, obfuscation, and preverification
 *             of Java bytecode.
 *
 * Copyright (c) 2002-2018 GuardSquare NV
 *
 * 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.annotation.*;
import proguard.util.ArrayUtil;

/**
 * This class can add annotations to a given parameter annotations attribute.
 * Annotations to be added must have been filled out beforehand.
 *
 * @author Eric Lafortune
 */
public class ParameterAnnotationsAttributeEditor
{
    private ParameterAnnotationsAttribute targetParameterAnnotationsAttribute;


    /**
     * Creates a new ParameterAnnotationsAttributeEditor that will edit
     * annotations in the given parameter annotations attribute.
     */
    public ParameterAnnotationsAttributeEditor(ParameterAnnotationsAttribute targetParameterAnnotationsAttribute)
    {
        this.targetParameterAnnotationsAttribute = targetParameterAnnotationsAttribute;
    }


    /**
     * Adds a given annotation to the annotations attribute.
     */
    public void addAnnotation(int parameterIndex, Annotation annotation)
    {
        ArrayUtil.add(targetParameterAnnotationsAttribute.parameterAnnotations[parameterIndex],
                      targetParameterAnnotationsAttribute.u2parameterAnnotationsCount[parameterIndex]++,
                      annotation);
    }
}