001    /*
002     * Copyright 2007-2008 Sun Microsystems, Inc.  All Rights Reserved.
003     * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
004     *
005     * This code is free software; you can redistribute it and/or modify it
006     * under the terms of the GNU General Public License version 2 only, as
007     * published by the Free Software Foundation.  Sun designates this
008     * particular file as subject to the "Classpath" exception as provided
009     * by Sun in the LICENSE file that accompanied this code.
010     *
011     * This code is distributed in the hope that it will be useful, but WITHOUT
012     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
013     * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
014     * version 2 for more details (a copy is included in the LICENSE file that
015     * accompanied this code).
016     *
017     * You should have received a copy of the GNU General Public License version
018     * 2 along with this work; if not, write to the Free Software Foundation,
019     * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
020     *
021     * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
022     * CA 95054 USA or visit www.sun.com if you need additional information or
023     * have any questions.
024     */
025    
026    package com.sun.tools.classfile;
027    
028    import java.io.IOException;
029    
030    /**
031     *  <p><b>This is NOT part of any API supported by Sun Microsystems.  If
032     *  you write code that depends on this, you do so at your own risk.
033     *  This code and its internal interfaces are subject to change or
034     *  deletion without notice.</b>
035     */
036    public class StackMap_attribute extends Attribute {
037        StackMap_attribute(ClassReader cr, int name_index, int length)
038                throws IOException, StackMapTable_attribute.InvalidStackMap {
039            super(name_index, length);
040            number_of_entries = cr.readUnsignedShort();
041            entries = new stack_map_frame[number_of_entries];
042            for (int i = 0; i < number_of_entries; i++)
043                entries[i] = new stack_map_frame(cr);
044        }
045    
046        public StackMap_attribute(ConstantPool constant_pool, stack_map_frame[] entries)
047                throws ConstantPoolException {
048            this(constant_pool.getUTF8Index(Attribute.StackMap), entries);
049        }
050    
051        public StackMap_attribute(int name_index, stack_map_frame[] entries) {
052            super(name_index, StackMapTable_attribute.length(entries));
053            this.number_of_entries = entries.length;
054            this.entries = entries;
055        }
056    
057        public <R, D> R accept(Visitor<R, D> visitor, D data) {
058            return visitor.visitStackMap(this, data);
059        }
060    
061        public final int number_of_entries;
062        public final stack_map_frame entries[];
063    
064        public static class stack_map_frame extends StackMapTable_attribute.full_frame {
065            stack_map_frame(ClassReader cr)
066                    throws IOException, StackMapTable_attribute.InvalidStackMap {
067                super(255, cr);
068            }
069        }
070    }