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 CharacterRangeTable_attribute  extends Attribute {

    37     public static final int CRT_STATEMENT       = 0x0001;

    38     public static final int CRT_BLOCK           = 0x0002;

    39     public static final int CRT_ASSIGNMENT      = 0x0004;

    40     public static final int CRT_FLOW_CONTROLLER = 0x0008;

    41     public static final int CRT_FLOW_TARGET     = 0x0010;

    42     public static final int CRT_INVOKE          = 0x0020;

    43     public static final int CRT_CREATE          = 0x0040;

    44     public static final int CRT_BRANCH_TRUE     = 0x0080;

    45     public static final int CRT_BRANCH_FALSE    = 0x0100;

    46 

    47     CharacterRangeTable_attribute(ClassReader cr, int name_index, int length) throws IOException {

    48         super(name_index, length);

    49         int character_range_table_length = cr.readUnsignedShort();

    50         character_range_table = new Entry[character_range_table_length];

    51         for (int i = 0; i < character_range_table_length; i++)

    52             character_range_table[i] = new Entry(cr);

    53     }

    54 

    55     public CharacterRangeTable_attribute(ConstantPool constant_pool, Entry[] character_range_table)

    56             throws ConstantPoolException {

    57         this(constant_pool.getUTF8Index(Attribute.CharacterRangeTable), character_range_table);

    58     }

    59 

    60     public CharacterRangeTable_attribute(int name_index, Entry[] character_range_table) {

    61         super(name_index, 2 + character_range_table.length * Entry.length());

    62         this.character_range_table = character_range_table;

    63     }

    64 

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

    66         return visitor.visitCharacterRangeTable(this, data);

    67     }

    68 

    69     public final Entry[] character_range_table;

    70 

    71     public static class Entry {

    72         Entry(ClassReader cr) throws IOException {

    73             start_pc = cr.readUnsignedShort();

    74             end_pc = cr.readUnsignedShort();

    75             character_range_start = cr.readInt();

    76             character_range_end = cr.readInt();

    77             flags = cr.readUnsignedShort();

    78         }

    79 

    80         public static int length() {

    81             return 14;

    82         }

    83 

    84         public final int start_pc;

    85         public final int end_pc;

    86         public final int character_range_start;

    87         public final int character_range_end;

    88         public final int flags;

    89     }

    90 }