Mercurial > hg > truffle
annotate graal/com.oracle.jvmci.meta/src/com/oracle/jvmci/meta/ExceptionHandler.java @ 21556:48c1ebd24120
renamed com.oracle.graal.api[meta|code] modules to com.oracle.jvmci.[meta|code] (JBS:GRAAL-53)
author | Doug Simon <doug.simon@oracle.com> |
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date | Wed, 27 May 2015 00:36:16 +0200 |
parents | graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/ExceptionHandler.java@1cde96b96673 |
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1 /* |
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2 * Copyright (c) 2009, 2012, 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. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 */ |
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23 package com.oracle.jvmci.meta; |
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24 |
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25 import java.util.*; |
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26 |
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27 /** |
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28 * Represents an exception handler within the bytecodes. |
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29 */ |
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30 public final class ExceptionHandler { |
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31 |
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32 private final int startBCI; |
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33 private final int endBCI; |
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34 private final int handlerBCI; |
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35 private final int catchTypeCPI; |
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36 private final JavaType catchType; |
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37 |
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38 /** |
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39 * Creates a new exception handler with the specified ranges. |
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40 * |
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41 * @param startBCI the start index of the protected range |
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42 * @param endBCI the end index of the protected range |
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43 * @param catchBCI the index of the handler |
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44 * @param catchTypeCPI the index of the throwable class in the constant pool |
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45 * @param catchType the type caught by this exception handler |
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46 */ |
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47 public ExceptionHandler(int startBCI, int endBCI, int catchBCI, int catchTypeCPI, JavaType catchType) { |
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48 this.startBCI = startBCI; |
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49 this.endBCI = endBCI; |
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50 this.handlerBCI = catchBCI; |
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51 this.catchTypeCPI = catchTypeCPI; |
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52 this.catchType = catchType; |
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53 } |
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54 |
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55 /** |
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56 * Returns the start bytecode index of the protected range of this handler. |
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57 */ |
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58 public int getStartBCI() { |
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59 return startBCI; |
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60 } |
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61 |
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62 /** |
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63 * Returns the end bytecode index of the protected range of this handler. |
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64 */ |
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65 public int getEndBCI() { |
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66 return endBCI; |
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67 } |
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68 |
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69 /** |
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70 * Returns the bytecode index of the handler block of this handler. |
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71 */ |
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72 public int getHandlerBCI() { |
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73 return handlerBCI; |
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74 } |
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75 |
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76 /** |
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77 * Returns the index into the constant pool representing the type of exception caught by this |
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78 * handler. |
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79 */ |
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80 public int catchTypeCPI() { |
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81 return catchTypeCPI; |
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82 } |
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83 |
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84 /** |
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85 * Checks whether this handler catches all exceptions. |
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86 * |
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87 * @return {@code true} if this handler catches all exceptions |
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88 */ |
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89 public boolean isCatchAll() { |
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90 return catchTypeCPI == 0; |
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91 } |
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92 |
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93 /** |
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94 * Returns the type of exception caught by this exception handler. |
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95 */ |
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96 public JavaType getCatchType() { |
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97 return catchType; |
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98 } |
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99 |
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100 @Override |
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101 public boolean equals(Object obj) { |
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103 return false; | |
104 } | |
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105 ExceptionHandler that = (ExceptionHandler) obj; |
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106 if (this.startBCI != that.startBCI || this.endBCI != that.endBCI || this.handlerBCI != that.handlerBCI || this.catchTypeCPI != that.catchTypeCPI) { |
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107 return false; |
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108 } |
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109 return Objects.equals(this.catchType, that.catchType); |
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110 } |
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111 |
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112 @Override |
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113 public String toString() { |
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114 return "ExceptionHandler<startBCI=" + startBCI + ", endBCI=" + endBCI + ", handlerBCI=" + handlerBCI + ", catchTypeCPI=" + catchTypeCPI + ", catchType=" + catchType + ">"; |
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115 } |
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116 |
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117 @Override |
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118 public int hashCode() { |
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119 return catchTypeCPI ^ endBCI ^ handlerBCI; |
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120 } |
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121 } |