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 *  <p><b>This is NOT part of any supported API.
32 *  If you write code that depends on this, you do so at your own risk.
33 *  This code and its internal interfaces are subject to change or
34 *  deletion without notice.</b>
35 */
36public class StackMap_attribute extends Attribute {
37    StackMap_attribute(ClassReader cr, int name_index, int length)
38            throws IOException, StackMapTable_attribute.InvalidStackMap {
39        super(name_index, length);
40        number_of_entries = cr.readUnsignedShort();
41        entries = new stack_map_frame[number_of_entries];
42        for (int i = 0; i < number_of_entries; i++)
43            entries[i] = new stack_map_frame(cr);
44    }
45
46    public StackMap_attribute(ConstantPool constant_pool, stack_map_frame[] entries)
47            throws ConstantPoolException {
48        this(constant_pool.getUTF8Index(Attribute.StackMap), entries);
49    }
50
51    public StackMap_attribute(int name_index, stack_map_frame[] entries) {
52        super(name_index, StackMapTable_attribute.length(entries));
53        this.number_of_entries = entries.length;
54        this.entries = entries;
55    }
56
57    public <R, D> R accept(Visitor<R, D> visitor, D data) {
58        return visitor.visitStackMap(this, data);
59    }
60
61    public final int number_of_entries;
62    public final stack_map_frame entries[];
63
64    public static class stack_map_frame extends StackMapTable_attribute.full_frame {
65        stack_map_frame(ClassReader cr)
66                throws IOException, StackMapTable_attribute.InvalidStackMap {
67            super(255, cr);
68        }
69    }
70}
71