1/*
2 * Copyright (c) 2012, 2013, 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 4.8.13.
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 class MethodParameters_attribute extends Attribute {
39
40    public final int method_parameter_table_length;
41    public final Entry[] method_parameter_table;
42
43    MethodParameters_attribute(ClassReader cr,
44                              int name_index,
45                              int length)
46        throws IOException {
47        super(name_index, length);
48
49        method_parameter_table_length = cr.readUnsignedByte();
50        method_parameter_table = new Entry[method_parameter_table_length];
51        for (int i = 0; i < method_parameter_table_length; i++)
52            method_parameter_table[i] = new Entry(cr);
53    }
54
55    public MethodParameters_attribute(ConstantPool constant_pool,
56                                      Entry[] method_parameter_table)
57        throws ConstantPoolException {
58        this(constant_pool.getUTF8Index(Attribute.MethodParameters),
59             method_parameter_table);
60    }
61
62    public MethodParameters_attribute(int name_index,
63                                      Entry[] method_parameter_table) {
64        super(name_index, 1 + method_parameter_table.length * Entry.length());
65        this.method_parameter_table_length = method_parameter_table.length;
66        this.method_parameter_table = method_parameter_table;
67    }
68
69    public <R, D> R accept(Visitor<R, D> visitor, D data) {
70        return visitor.visitMethodParameters(this, data);
71    }
72
73    public static class Entry {
74        Entry(ClassReader cr) throws IOException {
75            name_index = cr.readUnsignedShort();
76            flags = cr.readUnsignedShort();
77        }
78
79        public static int length() {
80            return 6;
81        }
82
83        public final int name_index;
84        public final int flags;
85    }
86
87}
88