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 

    26 package com.sun.tools.classfile;

    27 

    28 import 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  */

    38 public 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 }