1 /* |
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2 * Copyright (c) 2007, 2008, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 */ |
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25 |
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26 package com.sun.tools.classfile; |
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27 |
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28 import java.io.IOException; |
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29 |
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30 /** |
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31 * See JVMS, section 4.8.12. |
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32 * |
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33 * <p><b>This is NOT part of any supported API. |
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34 * If you write code that depends on this, you do so at your own risk. |
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35 * This code and its internal interfaces are subject to change or |
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36 * deletion without notice.</b> |
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37 */ |
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38 public class LineNumberTable_attribute extends Attribute { |
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39 LineNumberTable_attribute(ClassReader cr, int name_index, int length) throws IOException { |
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40 super(name_index, length); |
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41 line_number_table_length = cr.readUnsignedShort(); |
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42 line_number_table = new Entry[line_number_table_length]; |
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43 for (int i = 0; i < line_number_table_length; i++) |
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44 line_number_table[i] = new Entry(cr); |
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45 } |
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46 |
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47 public LineNumberTable_attribute(ConstantPool constant_pool, Entry[] line_number_table) |
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48 throws ConstantPoolException { |
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49 this(constant_pool.getUTF8Index(Attribute.LineNumberTable), line_number_table); |
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50 } |
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51 |
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52 public LineNumberTable_attribute(int name_index, Entry[] line_number_table) { |
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53 super(name_index, 2 + line_number_table.length * Entry.length()); |
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54 this.line_number_table_length = line_number_table.length; |
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55 this.line_number_table = line_number_table; |
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56 } |
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57 |
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58 public <R, D> R accept(Visitor<R, D> visitor, D data) { |
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59 return visitor.visitLineNumberTable(this, data); |
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60 } |
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61 |
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62 public final int line_number_table_length; |
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63 public final Entry[] line_number_table; |
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64 |
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65 public static class Entry { |
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66 Entry(ClassReader cr) throws IOException { |
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67 start_pc = cr.readUnsignedShort(); |
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68 line_number = cr.readUnsignedShort(); |
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69 } |
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70 |
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71 public static int length() { |
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72 return 4; |
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73 } |
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74 |
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75 public final int start_pc; |
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76 public final int line_number; |
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77 } |
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78 } |
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