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annotate graal/com.oracle.truffle.api/src/com/oracle/truffle/api/instrument/impl/LineLocationToSourceSectionCollectionMap.java @ 17078:c4b1cf38002b

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Truffle: TruffleCompilationExceptionsAreThrown option to get OptimizationFailedException on compiler error.
author Chris Seaton <chris.seaton@oracle.com>
date Tue, 09 Sep 2014 20:19:23 +0100
parents a1427e40deaf
children c88ab4f1f04a
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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. 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.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.source.*;
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32
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33 /**
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34 * A mapping from {@link LineLocation} (a line number in a specific piece of {@link Source} code) to
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35 * a collection of {@link SourceSection}s that exist on that line. This class assumes that all nodes
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36 * are instrumented as it uses the {@link ProbeListener} interface to determine the source sections
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37 * that exist in the file.
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38 */
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39 public class LineLocationToSourceSectionCollectionMap implements ProbeListener {
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40
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41 private static final boolean TRACE = false;
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42 private static final PrintStream OUT = System.out;
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43
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44 /**
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45 * Map: Source line ==> source sections that exist on the line.
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46 */
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47 private final Map<LineLocation, Collection<SourceSection>> lineToSourceSectionsMap = new HashMap<>();
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48
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49 public LineLocationToSourceSectionCollectionMap() {
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50 }
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51
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52 public void newProbeInserted(SourceSection sourceSection, Probe probe) {
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53 if (sourceSection != null && !(sourceSection instanceof NullSourceSection)) {
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54 final LineLocation lineLocation = sourceSection.getLineLocation();
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55 if (TRACE) {
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56 OUT.println("LineLocationToSourceSectionCollectionMap: adding " + lineLocation + " Probe=" + probe);
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57 }
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58 this.addSourceSectionToLine(lineLocation, sourceSection);
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59 }
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60 }
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61
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62 public void probeTaggedAs(Probe probe, SyntaxTag tag) {
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63 // This map ignores tags, but this subclasses can override this method to operate on tags.
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64 }
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65
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66 /**
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67 * Adds a source section to the given line.
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68 * <p>
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69 * If the line already exists in the internal {@link #lineToSourceSectionsMap}, this source
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70 * section will be added to the existing collection. If no line already exists in the internal
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71 * map, then a new key is added along with a new collection containing the source section.
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72 * <p>
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73 * This class does not check if a source section has already been added to a line.
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74 *
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75 * @param line The {@link LineLocation} to attach the source section to.
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76 * @param sourceSection The {@link SourceSection} to attach for that line location.
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77 */
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78 protected void addSourceSectionToLine(LineLocation line, SourceSection sourceSection) {
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79 if (!lineToSourceSectionsMap.containsKey(line)) {
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80 // Key does not exist, add new source section list
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81 final ArrayList<SourceSection> newSourceSectionList = new ArrayList<>(2);
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82 newSourceSectionList.add(sourceSection);
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83 lineToSourceSectionsMap.put(line, newSourceSectionList);
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84 } else {
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85 // Source section list exists, add to existing
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86 final Collection<SourceSection> existingSourceSectionList = lineToSourceSectionsMap.get(line);
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87 existingSourceSectionList.add(sourceSection);
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88 }
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89 }
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90
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91 /**
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92 * Returns a collection of {@link SourceSection}s at the given {@link LineLocation}, an empty
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93 * list if none.
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94 *
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95 * @param line The line to check.
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96 * @return the source sections at the given line.
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97 */
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98 public Collection<SourceSection> getSourceSectionsAtLine(LineLocation line) {
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99 Collection<SourceSection> sourceSectionList = lineToSourceSectionsMap.get(line);
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100
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101 if (sourceSectionList == null) {
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102 return Collections.emptyList();
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103 }
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104 return sourceSectionList;
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105 }
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106
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107 /**
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108 * Convenience method to get source sections according to a int line number. Returns a
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109 * collection of {@link SourceSection}s at the given line number. If there are no source
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110 * sections at that line, an empty list is returned.
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111 *
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112 * @param lineNumber The line number to check.
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113 * @return A collection of source sections at the given line.
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114 */
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115 public Collection<SourceSection> getSourceSectionsAtLineNumber(int lineNumber) {
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116
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117 final Set<LineLocation> keySet = lineToSourceSectionsMap.keySet();
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118 if (keySet.size() == 0) {
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119 return Collections.emptyList();
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120 }
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121
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122 final ArrayList<SourceSection> sourceSections = new ArrayList<>();
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123 for (LineLocation line : keySet) {
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124 if (line.getLineNumber() == lineNumber)
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125 sourceSections.addAll(lineToSourceSectionsMap.get(line));
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126 }
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127
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128 return sourceSections;
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129 }
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130 }