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  * See JVMS, section 4.8.5.

    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 Exceptions_attribute extends Attribute {

    39     Exceptions_attribute(ClassReader cr, int name_index, int length) throws IOException {

    40         super(name_index, length);

    41         number_of_exceptions = cr.readUnsignedShort();

    42         exception_index_table = new int[number_of_exceptions];

    43         for (int i = 0; i < number_of_exceptions; i++)

    44             exception_index_table[i] = cr.readUnsignedShort();

    45     }

    46 

    47     public Exceptions_attribute(ConstantPool constant_pool, int[] exception_index_table)

    48             throws ConstantPoolException {

    49         this(constant_pool.getUTF8Index(Attribute.Exceptions), exception_index_table);

    50     }

    51 

    52     public Exceptions_attribute(int name_index, int[] exception_index_table) {

    53         super(name_index, 2 + 2 * exception_index_table.length);

    54         this.number_of_exceptions = exception_index_table.length;

    55         this.exception_index_table = exception_index_table;

    56     }

    57 

    58     public String getException(int index, ConstantPool constant_pool) throws ConstantPoolException {

    59         int exception_index = exception_index_table[index];

    60         return constant_pool.getClassInfo(exception_index).getName();

    61     }

    62 

    63     public <R, D> R accept(Visitor<R, D> visitor, D data) {

    64         return visitor.visitExceptions(this, data);

    65     }

    66 

    67     public final int number_of_exceptions;

    68     public final int[] exception_index_table;

    69 }