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annotate truffle/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/ProbeFailure.java @ 22157:dc83cc1f94f2
Using fully qualified imports
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Wed, 16 Sep 2015 11:33:22 +0200 |
parents | 9c8c0937da41 |
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1 /* |
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2 * Copyright (c) 2015, 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 package com.oracle.truffle.api.instrument; |
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26 |
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27 import com.oracle.truffle.api.instrument.ProbeNode.WrapperNode; |
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28 import com.oracle.truffle.api.nodes.Node; |
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29 import com.oracle.truffle.api.nodes.NodeFieldAccessor; |
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30 import com.oracle.truffle.api.nodes.NodeUtil; |
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31 |
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32 /** |
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33 * Description of a failed attempt to instrument an AST node. |
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34 */ |
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35 public final class ProbeFailure { |
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36 |
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37 public enum Reason { |
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38 |
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39 /** |
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40 * Node to be probed has no parent. |
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41 */ |
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42 NO_PARENT("Node to be probed has no parent"), |
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43 |
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44 /** |
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45 * The node to be probed is a wrapper. |
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46 */ |
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47 WRAPPER_NODE("The node to be probed is a wrapper"), |
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48 |
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49 /** |
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50 * The node to be probed returned {@link Node#isInstrumentable()}{@code == false}. |
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51 */ |
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52 NOT_INSTRUMENTABLE("The node to be project is \"not instrumentable\""), |
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53 |
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54 /** |
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55 * No wrapper could be created that is also a {@link Node}. |
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56 */ |
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57 NO_WRAPPER("No wrapper could be created"), |
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58 |
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59 /** |
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60 * Wrapper not assignable to the parent's child field. |
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61 */ |
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62 WRAPPER_TYPE("Wrapper not assignable to parent's child field"); |
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63 |
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64 final String message; |
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65 |
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66 private Reason(String message) { |
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67 this.message = message; |
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68 } |
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69 |
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70 public String getMessage() { |
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71 return message; |
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72 } |
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73 } |
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74 |
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75 private final Reason reason; |
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76 private final Node parent; |
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77 private final Node child; |
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78 private final Object wrapper; |
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79 |
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80 /** |
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81 * Description of an internal failure of {@link Node#probe()}. |
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82 * |
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83 * @param reason what caused the failure |
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84 * @param parent the parent, if known, of the child being probed |
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85 * @param child this child being probed |
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86 * @param wrapper the {@link WrapperNode} created to implement the probe |
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87 */ |
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88 public ProbeFailure(Reason reason, Node parent, Node child, Object wrapper) { |
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89 this.reason = reason; |
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90 this.parent = parent; |
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91 this.child = child; |
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92 this.wrapper = wrapper; |
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93 } |
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94 |
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95 /** |
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96 * @return a short explanation of the failure |
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97 */ |
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98 public Reason getReason() { |
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99 return reason; |
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100 } |
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101 |
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102 /** |
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103 * @return the parent, if any, of the node being probed |
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104 */ |
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105 public Node getParent() { |
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106 return parent; |
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107 } |
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108 |
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109 /** |
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110 * @return the node being probed |
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111 */ |
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112 public Node getChild() { |
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113 return child; |
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114 } |
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115 |
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116 /** |
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117 * @return the {@link WrapperNode} created for the probe attempt |
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118 */ |
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119 public Object getWrapper() { |
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120 return wrapper; |
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121 } |
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122 |
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123 public String getMessage() { |
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124 final StringBuilder sb = new StringBuilder(reason.message + ": "); |
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125 if (parent != null) { |
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126 sb.append("parent=" + parent.getClass().getSimpleName() + " "); |
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127 if (child != null) { |
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128 sb.append("child=" + child.getClass().getSimpleName() + " "); |
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129 final NodeFieldAccessor field = NodeUtil.findChildField(parent, child); |
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130 if (field != null) { |
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131 sb.append("field=" + field.getName() + " "); |
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132 } |
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133 } |
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134 } |
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135 if (wrapper != null) { |
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136 sb.append("wrapper=" + wrapper.getClass().getSimpleName()); |
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137 } |
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138 return sb.toString(); |
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139 } |
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140 |
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141 } |