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 */
21package proguard.classfile.attribute.annotation;
22
23import proguard.classfile.*;
24import proguard.classfile.attribute.Attribute;
25import proguard.classfile.attribute.annotation.visitor.AnnotationVisitor;
26
27/**
28 * This Attribute represents a parameter annotations attribute.
29 *
30 * @author Eric Lafortune
31 */
32public abstract class ParameterAnnotationsAttribute extends Attribute
33{
34    public int            u1parametersCount;
35    public int[]          u2parameterAnnotationsCount;
36    public Annotation[][] parameterAnnotations;
37
38
39    /**
40     * Creates an uninitialized ParameterAnnotationsAttribute.
41     */
42    protected ParameterAnnotationsAttribute()
43    {
44    }
45
46
47    /**
48     * Creates an initialized ParameterAnnotationsAttribute.
49     */
50    protected ParameterAnnotationsAttribute(int            u2attributeNameIndex,
51                                            int            u1parametersCount,
52                                            int[]          u2parameterAnnotationsCount,
53                                            Annotation[][] parameterAnnotations)
54    {
55        super(u2attributeNameIndex);
56
57        this.u1parametersCount           = u1parametersCount;
58        this.u2parameterAnnotationsCount = u2parameterAnnotationsCount;
59        this.parameterAnnotations        = parameterAnnotations;
60    }
61
62
63    /**
64     * Applies the given visitor to all annotations.
65     */
66    public void annotationsAccept(Clazz clazz, Method method, AnnotationVisitor annotationVisitor)
67    {
68        // Loop over all parameters.
69        for (int parameterIndex = 0; parameterIndex < u1parametersCount; parameterIndex++)
70        {
71            int          annotationsCount = u2parameterAnnotationsCount[parameterIndex];
72            Annotation[] annotations      = parameterAnnotations[parameterIndex];
73
74            // Loop over all parameter annotations.
75            for (int index = 0; index < annotationsCount; index++)
76            {
77                // We don't need double dispatching here, since there is only one
78                // type of Annotation.
79                annotationVisitor.visitAnnotation(clazz, method, parameterIndex, annotations[index]);
80            }
81        }
82    }
83}
84