RuntimeParameterAnnotations_attribute.java revision 2942:08092deced3f 
1/*
2 * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package com.sun.tools.classfile;
27
28import java.io.IOException;
29
30/**
31 * See JVMS, section 4.8.18 and 4.8.19.
32 *
33 *  <p><b>This is NOT part of any supported API.
34 *  If you write code that depends on this, you do so at your own risk.
35 *  This code and its internal interfaces are subject to change or
36 *  deletion without notice.</b>
37 */
38public abstract class RuntimeParameterAnnotations_attribute extends Attribute {
39    RuntimeParameterAnnotations_attribute(ClassReader cr, int name_index, int length)
40            throws IOException, Annotation.InvalidAnnotation {
41        super(name_index, length);
42        int num_parameters = cr.readUnsignedByte();
43        parameter_annotations = new Annotation[num_parameters][];
44        for (int p = 0; p < parameter_annotations.length; p++) {
45            int num_annotations = cr.readUnsignedShort();
46            Annotation[] annotations = new Annotation[num_annotations];
47            for (int i = 0; i < num_annotations; i++)
48                annotations[i] = new Annotation(cr);
49            parameter_annotations[p] = annotations;
50        }
51    }
52
53    protected RuntimeParameterAnnotations_attribute(int name_index, Annotation[][] parameter_annotations) {
54        super(name_index, length(parameter_annotations));
55        this.parameter_annotations = parameter_annotations;
56    }
57
58    private static int length(Annotation[][] anno_arrays) {
59        int n = 1;
60        for (Annotation[] anno_array: anno_arrays) {
61            n += 2;
62            for (Annotation anno: anno_array)
63                n += anno.length();
64        }
65        return n;
66    }
67
68    public final Annotation[][] parameter_annotations;
69}
70
71