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annotate graal/com.oracle.truffle.api.test/src/com/oracle/truffle/api/test/InstrumentationTest.java @ 17179:6d8ae4c6725f
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author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Mon, 22 Sep 2014 11:20:35 -0700 |
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children | e3c95cbbb50c |
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1 /* |
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2 * Copyright (c) 2014, 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.truffle.api.test; |
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24 |
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25 import java.util.*; |
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26 |
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27 import org.junit.*; |
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28 |
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29 import com.oracle.truffle.api.*; |
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30 import com.oracle.truffle.api.frame.*; |
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31 import com.oracle.truffle.api.instrument.*; |
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32 import com.oracle.truffle.api.nodes.*; |
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33 import com.oracle.truffle.api.source.*; |
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34 |
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35 /** |
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36 * <h3>AST Instrumentation</h3> |
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37 * |
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38 * Instrumentation allows the insertion into Truffle ASTs language-specific instances of |
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39 * {@link Wrapper} that propagate {@link ExecutionEvents} through a {@link Probe} to any instances |
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40 * of {@link Instrument} that might be attached to the particular probe by tools. |
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41 * <ol> |
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42 * <li>Creates a simple add AST</li> |
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43 * <li>Verifies its structure</li> |
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44 * <li>"Probes" the add node by adding a {@link Wrapper} and associated {@link Probe}</li> |
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45 * <li>Attaches a simple {@link Instrument} to the node via its {@link Probe}</li> |
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46 * <li>Verifies the structure of the probed AST</li> |
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47 * <li>Verifies the execution of the probed AST</li> |
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48 * <li>Verifies the results observed by the instrument.</li> |
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49 * </ol> |
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50 * To do these tests, several required classes have been implemented in their most basic form, only |
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51 * implementing the methods necessary for the tests to pass, with stubs elsewhere. |
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52 */ |
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53 public class InstrumentationTest { |
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54 |
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55 @Test |
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56 public void test() { |
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57 // Build a tree |
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58 TruffleRuntime runtime = Truffle.getRuntime(); |
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59 TestChildNode leftChild = new TestChildNode(); |
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60 TestChildNode rightChild = new TestChildNode(); |
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61 TestSourceSection sourceSection = new TestSourceSection(); |
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62 TestAddNode addNode = new TestAddNode(leftChild, rightChild, sourceSection); |
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63 TestRootNode rootNode = new TestRootNode(addNode); |
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64 |
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65 // Have to create a call target before checking parent/child relationships |
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66 CallTarget target = runtime.createCallTarget(rootNode); |
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67 |
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68 // Check tree structure |
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69 Assert.assertEquals(addNode, leftChild.getParent()); |
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70 Assert.assertEquals(addNode, rightChild.getParent()); |
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71 Iterator<Node> iterator = addNode.getChildren().iterator(); |
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72 Assert.assertEquals(leftChild, iterator.next()); |
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73 Assert.assertEquals(rightChild, iterator.next()); |
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74 Assert.assertFalse(iterator.hasNext()); |
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75 Assert.assertEquals(rootNode, addNode.getParent()); |
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76 iterator = rootNode.getChildren().iterator(); |
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77 Assert.assertEquals(addNode, iterator.next()); |
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78 Assert.assertFalse(iterator.hasNext()); |
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79 Object result = target.call(); |
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80 Assert.assertEquals(42, result); |
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81 |
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82 // Create another call target, this time with the "probed" add node |
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83 TestExecutionContext context = new TestExecutionContext(); |
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84 TestWrapper wrapper = new TestWrapper(addNode, context); |
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85 rootNode = new TestRootNode(wrapper); |
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86 target = runtime.createCallTarget(rootNode); |
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87 |
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88 // Check the new tree structure |
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89 Assert.assertEquals(addNode, leftChild.getParent()); |
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90 Assert.assertEquals(addNode, rightChild.getParent()); |
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91 iterator = addNode.getChildren().iterator(); |
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92 Assert.assertEquals(leftChild, iterator.next()); |
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93 Assert.assertEquals(rightChild, iterator.next()); |
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94 Assert.assertFalse(iterator.hasNext()); |
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95 Assert.assertEquals(wrapper, addNode.getParent()); |
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96 iterator = wrapper.getChildren().iterator(); |
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97 Assert.assertEquals(addNode, iterator.next()); |
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98 Assert.assertFalse(iterator.hasNext()); |
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99 Assert.assertEquals(rootNode, wrapper.getParent()); |
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100 iterator = rootNode.getChildren().iterator(); |
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101 Assert.assertEquals(wrapper, iterator.next()); |
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102 Assert.assertFalse(iterator.hasNext()); |
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103 result = target.call(); |
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104 Assert.assertEquals(42, result); |
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105 |
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106 // Create some instruments |
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107 final TestInstrument instrumentA = new TestInstrument(); |
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108 final TestInstrument instrumentB = new TestInstrument(); |
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109 |
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110 wrapper.getProbe().addInstrument(instrumentA); |
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111 |
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112 result = target.call(); |
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113 Assert.assertEquals(instrumentA.numInstrumentEnter, 1); |
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114 Assert.assertEquals(instrumentA.numInstrumentLeave, 1); |
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115 Assert.assertEquals(instrumentB.numInstrumentEnter, 0); |
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116 Assert.assertEquals(instrumentB.numInstrumentLeave, 0); |
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117 Assert.assertEquals(42, result); |
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118 |
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119 wrapper.getProbe().addInstrument(instrumentB); |
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120 |
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121 result = target.call(); |
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122 Assert.assertEquals(instrumentA.numInstrumentEnter, 2); |
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123 Assert.assertEquals(instrumentA.numInstrumentLeave, 2); |
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124 Assert.assertEquals(instrumentB.numInstrumentEnter, 1); |
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125 Assert.assertEquals(instrumentB.numInstrumentLeave, 1); |
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126 Assert.assertEquals(42, result); |
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127 |
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128 wrapper.getProbe().removeInstrument(instrumentA); |
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129 |
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130 result = target.call(); |
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131 Assert.assertEquals(instrumentA.numInstrumentEnter, 2); |
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132 Assert.assertEquals(instrumentA.numInstrumentLeave, 2); |
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133 Assert.assertEquals(instrumentB.numInstrumentEnter, 2); |
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134 Assert.assertEquals(instrumentB.numInstrumentLeave, 2); |
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135 Assert.assertEquals(42, result); |
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136 |
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137 } |
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138 |
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139 private class TestRootNode extends RootNode { |
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140 @Child private RootNode child; |
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141 |
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142 public TestRootNode(RootNode child) { |
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143 super(null); |
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144 this.child = child; |
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145 } |
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146 |
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147 @Override |
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148 public Object execute(VirtualFrame frame) { |
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149 return child.execute(frame); |
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150 } |
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151 } |
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152 |
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153 private class TestAddNode extends RootNode { |
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154 |
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155 @Child private TestChildNode left; |
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156 @Child private TestChildNode right; |
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157 |
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158 public TestAddNode(TestChildNode left, TestChildNode right, TestSourceSection sourceSection) { |
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159 super(sourceSection); |
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160 this.left = left; |
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161 this.right = right; |
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162 } |
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163 |
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164 @Override |
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165 public Object execute(VirtualFrame frame) { |
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166 return left.execute() + right.execute(); |
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167 } |
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168 } |
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169 |
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170 private class TestChildNode extends Node { |
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171 |
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172 public TestChildNode() { |
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173 super(null); |
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174 } |
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175 |
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176 public int execute() { |
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177 return 21; |
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178 } |
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179 } |
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180 |
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181 /** |
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182 * The wrapper node class is usually language-specific and inherits from the language-specific |
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183 * subclass of {@link Node}, not {@RootNode}. |
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184 */ |
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185 private class TestWrapper extends RootNode implements Wrapper { |
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186 @Child private RootNode child; |
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187 private Probe probe; |
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188 |
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189 public TestWrapper(RootNode child, ExecutionContext context) { |
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190 this.child = insert(child); |
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191 this.probe = context.createProbe(child.getSourceSection()); |
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192 } |
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193 |
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194 public Node getChild() { |
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195 return child; |
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196 } |
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197 |
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198 public Probe getProbe() { |
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199 return probe; |
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200 } |
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201 |
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202 @Override |
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203 public Object execute(VirtualFrame frame) { |
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204 probe.enter(child, frame); |
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205 Object result; |
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206 |
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207 try { |
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208 result = child.execute(frame); |
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209 probe.leave(child, frame, result); |
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210 } catch (Exception e) { |
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211 probe.leaveExceptional(child, frame, e); |
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212 throw (e); |
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213 } |
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214 return result; |
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215 } |
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216 } |
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217 |
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218 /** |
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219 * An "empty" description of the source code that might correspond to a particular AST node. The |
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220 * instrumentation framework tracks probes that have been inserted by their source location, |
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221 * using this as a key. |
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222 */ |
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223 private class TestSourceSection implements SourceSection { |
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224 |
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225 public Source getSource() { |
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226 return null; |
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227 } |
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228 |
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229 public int getStartLine() { |
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230 return 0; |
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231 } |
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232 |
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233 public LineLocation getLineLocation() { |
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234 return null; |
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235 } |
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236 |
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237 public int getStartColumn() { |
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238 return 0; |
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239 } |
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240 |
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241 public int getCharIndex() { |
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242 return 0; |
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243 } |
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244 |
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245 public int getCharLength() { |
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246 return 0; |
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247 } |
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248 |
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249 public int getCharEndIndex() { |
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250 return 0; |
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251 } |
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252 |
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253 public String getIdentifier() { |
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254 return null; |
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255 } |
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256 |
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257 public String getCode() { |
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258 return null; |
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259 } |
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260 |
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261 public String getShortDescription() { |
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262 return null; |
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263 } |
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264 |
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265 } |
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266 |
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267 private class TestExecutionContext extends ExecutionContext { |
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268 |
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269 @Override |
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270 public String getLanguageShortName() { |
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271 return "test"; |
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272 } |
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273 |
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274 @Override |
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275 protected void setSourceCallback(SourceCallback sourceCallback) { |
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276 } |
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277 |
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278 } |
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279 |
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280 private class TestInstrument extends Instrument { |
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281 |
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282 public int numInstrumentEnter = 0; |
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283 public int numInstrumentLeave = 0; |
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284 |
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285 @Override |
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286 public void enter(Node astNode, VirtualFrame frame) { |
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287 numInstrumentEnter++; |
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288 } |
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289 |
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290 @Override |
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291 public void leave(Node astNode, VirtualFrame frame, Object result) { |
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292 numInstrumentLeave++; |
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293 } |
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294 } |
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295 |
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296 } |