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 

    26 package com.sun.tools.classfile;

    27 

    28 import 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  */

    36 public 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 }