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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/LineToProbesMap.java @ 18485:e3c95cbbb50c
Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
author | Michael Van De Vanter <michael.van.de.vanter@oracle.com> |
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date | Sun, 23 Nov 2014 16:07:23 -0800 |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
Michael Van De Vanter <michael.van.de.vanter@oracle.com>
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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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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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6 * under the terms of the GNU General Public License version 2 only, as |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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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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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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15 * accompanied this code). |
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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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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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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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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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Truffle Instrumentation: major API revision, based around the Probe and Instrument classes; add Instrumentable API for language implementors, with most details automated; reimplemented to handle AST splitting automatically; more JUnit tests.
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23 * questions. |
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24 */ |
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25 package com.oracle.truffle.api.instrument.impl; |
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26 |
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27 import java.io.*; |
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28 import java.util.*; |
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29 |
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30 import com.oracle.truffle.api.instrument.*; |
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31 import com.oracle.truffle.api.instrument.Probe.ProbeListener; |
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32 import com.oracle.truffle.api.source.*; |
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33 |
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34 /** |
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35 * A mapping from {@link LineLocation} (a line number in a specific piece of {@link Source} code) to |
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36 * a collection of {@link Probe}s whose associated {@link SourceSection} starts on that line. |
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37 */ |
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38 public class LineToProbesMap implements ProbeListener { |
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39 |
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40 private static final boolean TRACE = false; |
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41 private static final PrintStream OUT = System.out; |
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42 |
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43 private static void trace(String msg) { |
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44 OUT.println("LineToProbesMap: " + msg); |
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45 } |
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46 |
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47 /** |
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48 * Map: Source line ==> probes associated with source sections starting on the line. |
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49 */ |
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50 private final Map<LineLocation, Collection<Probe>> lineToProbesMap = new HashMap<>(); |
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51 |
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52 public LineToProbesMap() { |
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53 } |
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54 |
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55 public void startASTProbing(Source source) { |
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56 } |
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57 |
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58 public void newProbeInserted(Probe probe) { |
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59 final SourceSection sourceSection = probe.getProbedSourceSection(); |
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60 if (sourceSection != null && !(sourceSection instanceof NullSourceSection)) { |
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61 final LineLocation lineLocation = sourceSection.getLineLocation(); |
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62 if (TRACE) { |
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63 trace("ADD " + lineLocation.getShortDescription() + " ==> " + probe.getShortDescription()); |
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64 } |
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65 this.addProbeToLine(lineLocation, probe); |
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66 } |
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67 } |
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68 |
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69 public void probeTaggedAs(Probe probe, SyntaxTag tag, Object tagValue) { |
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70 // This map ignores tags |
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71 } |
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72 |
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73 public void endASTProbing(Source source) { |
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74 } |
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75 |
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76 /** |
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77 * Returns the {@link Probe}, if any, associated with source that starts on a specified line; if |
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78 * there are more than one, return the one with the first starting character location. |
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79 */ |
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80 public Probe findLineProbe(LineLocation lineLocation) { |
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81 Probe probe = null; |
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82 final Collection<Probe> probes = getProbesAtLine(lineLocation); |
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83 for (Probe probesOnLine : probes) { |
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84 if (probe == null) { |
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85 probe = probesOnLine; |
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86 } else if (probesOnLine.getProbedSourceSection().getCharIndex() < probe.getProbedSourceSection().getCharIndex()) { |
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87 probe = probesOnLine; |
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88 } |
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89 } |
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90 return probe; |
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91 } |
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92 |
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93 /** |
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94 * Records creation of a probe whose associated source starts on the given line. |
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95 * <p> |
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96 * If the line already exists in the internal {@link #lineToProbesMap}, this probe will be added |
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97 * to the existing collection. If no line already exists in the internal map, then a new key is |
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98 * added along with a new collection containing the probe. |
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99 * <p> |
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100 * This class requires that each added line/probe pair hasn't been previously added. However, |
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101 * attaching the same probe to a new line location is allowed. |
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102 * |
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103 * @param line The {@link LineLocation} to attach the probe to. |
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104 * @param probe The {@link Probe} to attach for that line location. |
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105 */ |
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106 protected void addProbeToLine(LineLocation line, Probe probe) { |
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107 |
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108 if (!lineToProbesMap.containsKey(line)) { |
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109 // Key does not exist, add new probe list |
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110 final ArrayList<Probe> newProbeList = new ArrayList<>(2); |
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111 newProbeList.add(probe); |
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112 lineToProbesMap.put(line, newProbeList); |
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113 } else { |
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114 // Probe list exists, add to existing |
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115 final Collection<Probe> existingProbeList = lineToProbesMap.get(line); |
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116 assert !existingProbeList.contains(probe); |
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117 existingProbeList.add(probe); |
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118 } |
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119 } |
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120 |
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121 /** |
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122 * |
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123 * Returns a collection of {@link Probe}s whose associated source begins at the given |
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124 * {@link LineLocation}, an empty list if none. |
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125 * |
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126 * @param line The line to check. |
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127 * @return A collection of probes at the given line. |
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128 */ |
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129 public Collection<Probe> getProbesAtLine(LineLocation line) { |
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130 Collection<Probe> probesList = lineToProbesMap.get(line); |
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131 |
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132 if (probesList == null) { |
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133 return Collections.emptyList(); |
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134 } |
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135 return probesList; |
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136 } |
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137 |
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138 /** |
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139 * Convenience method to get probes according to a int line number. Returns a collection of |
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140 * {@link Probe}s at the given line number, an empty list if none. |
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141 * |
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142 * @param lineNumber The line number to check. |
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143 * @return A collection of probes at the given line. |
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144 */ |
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145 public Collection<Probe> getProbesAtLineNumber(int lineNumber) { |
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146 |
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147 final Set<LineLocation> keySet = lineToProbesMap.keySet(); |
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148 if (keySet.size() == 0) { |
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149 return Collections.emptyList(); |
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150 } |
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151 |
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152 ArrayList<Probe> probes = new ArrayList<>(); |
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153 for (LineLocation line : keySet) { |
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154 if (line.getLineNumber() == lineNumber) { |
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155 probes.addAll(lineToProbesMap.get(line)); |
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156 } |
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157 } |
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158 |
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159 return probes; |
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160 } |
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161 |
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162 public void forget(Source source) { |
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163 final Set<LineLocation> mappedLines = lineToProbesMap.keySet(); |
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164 if (mappedLines.size() > 0) { |
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165 List<LineLocation> forgetLines = new ArrayList<>(); |
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166 for (LineLocation line : mappedLines) { |
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167 if (line.getSource().equals(source)) { |
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168 forgetLines.add(line); |
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169 } |
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170 } |
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171 for (LineLocation line : forgetLines) { |
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172 lineToProbesMap.remove(line); |
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173 } |
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174 } |
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175 } |
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176 } |