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annotate src/org/tmatesoft/hg/internal/AnnotateFacility.java @ 549:83afa680555d

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Annotate merge revision (combined diff against two parents without looking further)
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 19 Feb 2013 21:17:39 +0100
parents ab21ac7dd833
children 4ea0351ca878
rev   line source
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1 /*
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2 * Copyright (c) 2013 TMate Software Ltd
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3 *
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4 * This program is free software; you can redistribute it and/or modify
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5 * it under the terms of the GNU General Public License as published by
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6 * the Free Software Foundation; version 2 of the License.
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7 *
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8 * This program is distributed in the hope that it will be useful,
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9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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11 * GNU General Public License for more details.
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12 *
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13 * For information on how to redistribute this software under
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14 * the terms of a license other than GNU General Public License
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15 * contact TMate Software at support@hg4j.com
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16 */
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17 package org.tmatesoft.hg.internal;
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18
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19 import static org.tmatesoft.hg.repo.HgRepository.NO_REVISION;
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20 import static org.tmatesoft.hg.repo.HgRepository.TIP;
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21
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22 import org.tmatesoft.hg.core.Nodeid;
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23 import org.tmatesoft.hg.internal.PatchGenerator.LineSequence;
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24 import org.tmatesoft.hg.repo.HgDataFile;
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25 import org.tmatesoft.hg.repo.HgInvalidStateException;
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26 import org.tmatesoft.hg.util.CancelledException;
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27
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28 /**
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29 *
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30 * @author Artem Tikhomirov
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31 * @author TMate Software Ltd.
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32 */
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33 @Experimental(reason="work in progress")
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34 public class AnnotateFacility {
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35
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36 /**
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37 * mimic 'hg diff -r csetRevIndex1 -r csetRevIndex2'
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38 */
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39 public void diff(HgDataFile df, int csetRevIndex1, int csetRevIndex2, BlockInspector insp) {
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40 int fileRevIndex1 = fileRevIndex(df, csetRevIndex1);
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41 int fileRevIndex2 = fileRevIndex(df, csetRevIndex2);
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42 LineSequence c1 = lines(df, fileRevIndex1);
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43 LineSequence c2 = lines(df, fileRevIndex2);
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44 PatchGenerator<LineSequence> pg = new PatchGenerator<LineSequence>();
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45 pg.init(c1, c2);
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46 pg.findMatchingBlocks(new BlameBlockInspector(insp, csetRevIndex1, csetRevIndex2));
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47 }
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48
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49 /**
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50 * Annotate file revision, line by line.
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51 */
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52 public void annotate(HgDataFile df, int changesetRevisionIndex, LineInspector insp) {
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53 if (!df.exists()) {
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54 return;
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55 }
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56 int fileRevIndex = fileRevIndex(df, changesetRevisionIndex);
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57 int[] fileRevParents = new int[2];
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58 FileAnnotation fa = new FileAnnotation(insp);
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59 do {
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60 // also covers changesetRevisionIndex == TIP, #implAnnotateChange doesn't tolerate constants
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61 changesetRevisionIndex = df.getChangesetRevisionIndex(fileRevIndex);
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62 df.parents(fileRevIndex, fileRevParents, null, null);
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63 implAnnotateChange(df, changesetRevisionIndex, fileRevIndex, fileRevParents, fa);
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64 fileRevIndex = fileRevParents[0];
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65 } while (fileRevIndex != NO_REVISION);
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66 }
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67
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68 /**
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69 * Annotates changes of the file against its parent(s)
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70 */
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71 public void annotateChange(HgDataFile df, int changesetRevisionIndex, BlockInspector insp) {
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72 // TODO detect if file is text/binary (e.g. looking for chars < ' ' and not \t\r\n\f
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73 int fileRevIndex = fileRevIndex(df, changesetRevisionIndex);
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74 int[] fileRevParents = new int[2];
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75 df.parents(fileRevIndex, fileRevParents, null, null);
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76 if (changesetRevisionIndex == TIP) {
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77 changesetRevisionIndex = df.getChangesetRevisionIndex(fileRevIndex);
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78 }
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79 implAnnotateChange(df, changesetRevisionIndex, fileRevIndex, fileRevParents, insp);
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80 }
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81
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82 private void implAnnotateChange(HgDataFile df, int csetRevIndex, int fileRevIndex, int[] fileParentRevs, BlockInspector insp) {
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83 final LineSequence fileRevLines = lines(df, fileRevIndex);
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84 if (fileParentRevs[0] != NO_REVISION && fileParentRevs[1] != NO_REVISION) {
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85 LineSequence p1Lines = lines(df, fileParentRevs[0]);
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86 LineSequence p2Lines = lines(df, fileParentRevs[1]);
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87 int p1ClogIndex = df.getChangesetRevisionIndex(fileParentRevs[0]);
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88 int p2ClogIndex = df.getChangesetRevisionIndex(fileParentRevs[1]);
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89 PatchGenerator<LineSequence> pg = new PatchGenerator<LineSequence>();
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90 pg.init(p2Lines, fileRevLines);
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91 EqualBlocksCollector p2MergeCommon = new EqualBlocksCollector();
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92 pg.findMatchingBlocks(p2MergeCommon);
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93 //
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94 pg.init(p1Lines);
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95 BlameBlockInspector bbi = new BlameBlockInspector(insp, p1ClogIndex, csetRevIndex);
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96 bbi.setMergeParent2(p2MergeCommon, p2ClogIndex);
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97 pg.findMatchingBlocks(bbi);
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98 } else if (fileParentRevs[0] == fileParentRevs[1]) {
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99 // may be equal iff both are unset
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100 assert fileParentRevs[0] == NO_REVISION;
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101 // everything added
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102 BlameBlockInspector bbi = new BlameBlockInspector(insp, NO_REVISION, csetRevIndex);
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103 bbi.begin(LineSequence.newlines(new byte[0]), fileRevLines);
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104 bbi.match(0, fileRevLines.chunkCount()-1, 0);
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105 bbi.end();
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106 } else {
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107 int soleParent = fileParentRevs[0] == NO_REVISION ? fileParentRevs[1] : fileParentRevs[0];
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108 assert soleParent != NO_REVISION;
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109 LineSequence parentLines = lines(df, soleParent);
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110
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111 int parentChangesetRevIndex = df.getChangesetRevisionIndex(soleParent);
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112 PatchGenerator<LineSequence> pg = new PatchGenerator<LineSequence>();
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113 pg.init(parentLines, fileRevLines);
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114 pg.findMatchingBlocks(new BlameBlockInspector(insp, parentChangesetRevIndex, csetRevIndex));
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115 }
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116 }
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117
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118 private static int fileRevIndex(HgDataFile df, int csetRevIndex) {
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119 Nodeid fileRev = df.getRepo().getManifest().getFileRevision(csetRevIndex, df.getPath());
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120 return df.getRevisionIndex(fileRev);
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121 }
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122
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123 private static LineSequence lines(HgDataFile df, int fileRevIndex) {
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124 try {
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125 ByteArrayChannel c;
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126 df.content(fileRevIndex, c = new ByteArrayChannel());
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127 return LineSequence.newlines(c.toArray());
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128 } catch (CancelledException ex) {
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129 // TODO likely it was bad idea to throw cancelled exception from content()
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130 // deprecate and provide alternative?
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131 HgInvalidStateException ise = new HgInvalidStateException("ByteArrayChannel never throws CancelledException");
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132 ise.initCause(ex);
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133 throw ise;
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134 }
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135 }
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136
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137 @Callback
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138 public interface BlockInspector {
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139 void same(EqualBlock block);
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140 void added(AddBlock block);
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141 void changed(ChangeBlock block);
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142 void deleted(DeleteBlock block);
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143 }
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144
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145 @Callback
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146 public interface BlockInspectorEx extends BlockInspector { // XXX better name
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147 // XXX perhaps, shall pass object instead of separate values for future extension?
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148 void start(int originLineCount, int targetLineCount);
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149 void done();
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150 }
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151
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152 public interface Block {
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153 int originChangesetIndex();
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154 int targetChangesetIndex();
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155 // boolean isMergeRevision();
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156 // int fileRevisionIndex();
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157 // int originFileRevisionIndex();
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158 // String[] lines();
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159 // byte[] data();
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160 }
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161
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162 public interface EqualBlock extends Block {
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163 int originStart();
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164 int targetStart();
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165 int length();
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166 }
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167
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168 public interface AddBlock extends Block {
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169 int insertedAt(); // line index in the old file
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170 int firstAddedLine();
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171 int totalAddedLines();
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172 String[] addedLines();
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173 }
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174 public interface DeleteBlock extends Block {
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175 int removedAt(); // line index in the new file
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176 int firstRemovedLine();
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177 int totalRemovedLines();
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178 String[] removedLines();
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179 }
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180 public interface ChangeBlock extends AddBlock, DeleteBlock {
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181 }
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182
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183 @Callback
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184 public interface LineInspector {
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185 /**
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186 * Not necessarily invoked sequentially by line numbers
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187 */
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188 void line(int lineNumber, int changesetRevIndex, LineDescriptor ld);
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189 }
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190
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191 public interface LineDescriptor {
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192 int totalLines();
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193 }
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194
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195
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196
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197 static class BlameBlockInspector extends PatchGenerator.DeltaInspector<LineSequence> {
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198 private final BlockInspector insp;
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199 private final int csetOrigin;
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200 private final int csetTarget;
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201 private EqualBlocksCollector p2MergeCommon;
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202 private int csetMergeParent;
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203 private IntVector mergeRanges;
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204
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205 public BlameBlockInspector(BlockInspector inspector, int originCset, int targetCset) {
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206 assert inspector != null;
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207 insp = inspector;
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208 csetOrigin = originCset;
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209 csetTarget = targetCset;
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210 }
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211
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212 public void setMergeParent2(EqualBlocksCollector p2Merge, int parentCset2) {
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213 p2MergeCommon = p2Merge;
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214 csetMergeParent = parentCset2;
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215 mergeRanges = new IntVector(3*10, 3*10);
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216 }
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217
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218 @Override
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219 public void begin(LineSequence s1, LineSequence s2) {
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220 super.begin(s1, s2);
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221 if (insp instanceof BlockInspectorEx) {
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222 ((BlockInspectorEx) insp).start(s1.chunkCount() - 1, s2.chunkCount() - 1);
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223 }
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224 }
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225
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226 @Override
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227 public void end() {
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228 super.end();
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229 if(insp instanceof BlockInspectorEx) {
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230 ((BlockInspectorEx) insp).done();
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231 }
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232 }
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233
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234 @Override
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235 protected void changed(int s1From, int s1To, int s2From, int s2To) {
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236 if (p2MergeCommon != null) {
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237 mergeRanges.clear();
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238 p2MergeCommon.combineAndMarkRangesWithTarget(s2From, s2To - s2From, csetOrigin, csetMergeParent, mergeRanges);
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239
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240 /*
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241 * Usecases:
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242 * 3 lines changed to 10 lines. range of 10 lines breaks down to 2 from p2, 3 from p1, and 5 from p2.
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243 * We report: 2 lines changed to 2(p2), then 1 line changed with 3(p1) and 5 lines added from p2.
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244 *
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245 * 10 lines changed to 3 lines, range of 3 lines breaks down to 2 line from p1 and 1 line from p2.
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246 * We report: 2 lines changed to 2(p1) and 8 lines changed to 1(p2)
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247 */
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248 int s1TotalLines = s1To - s1From, s1ConsumedLines = 0, s1Start = s1From;
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249
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250 for (int i = 0; i < mergeRanges.size(); i += 3) {
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251 final int rangeOrigin = mergeRanges.get(i);
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252 final int rangeStart = mergeRanges.get(i+1);
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253 final int rangeLen = mergeRanges.get(i+2);
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254 final boolean lastRange = i+3 >= mergeRanges.size();
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255 final int s1LinesLeft = s1TotalLines - s1ConsumedLines;
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256 // how many lines we may reported as changed (don't use more than in range unless it's the very last range)
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257 final int s1LinesToBorrow = lastRange ? s1LinesLeft : Math.min(s1LinesLeft, rangeLen);
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258 if (s1LinesToBorrow > 0) {
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259 BlockImpl2 block = new BlockImpl2(seq1, seq2, s1Start, s1LinesToBorrow, rangeStart, rangeLen, s1Start, rangeStart);
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260 block.setOriginAndTarget(rangeOrigin, csetTarget);
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261 insp.changed(block);
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262 s1ConsumedLines += s1LinesToBorrow;
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263 s1Start += s1LinesToBorrow;
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264 } else {
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265 BlockImpl2 block = getAddBlock(rangeStart, rangeLen, s1Start);
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266 block.setOriginAndTarget(rangeOrigin, csetTarget);
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267 insp.added(block);
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268 }
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269 }
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270 if (s1ConsumedLines != s1TotalLines) {
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271 throw new HgInvalidStateException(String.format("Expected to process %d lines, but actually was %d", s1TotalLines, s1ConsumedLines));
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272 }
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273 } else {
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274 BlockImpl2 block = new BlockImpl2(seq1, seq2, s1From, s1To-s1From, s2From, s2To - s2From, s1From, s2From);
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275 block.setOriginAndTarget(csetOrigin, csetTarget);
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276 insp.changed(block);
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277 }
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278 }
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279
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280 @Override
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281 protected void added(int s1InsertPoint, int s2From, int s2To) {
549
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282 if (p2MergeCommon != null) {
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283 mergeRanges.clear();
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284 p2MergeCommon.combineAndMarkRangesWithTarget(s2From, s2To - s2From, csetOrigin, csetMergeParent, mergeRanges);
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285 int insPoint = s1InsertPoint; // track changes to insertion point
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286 for (int i = 0; i < mergeRanges.size(); i += 3) {
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287 int rangeOrigin = mergeRanges.get(i);
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288 int rangeStart = mergeRanges.get(i+1);
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289 int rangeLen = mergeRanges.get(i+2);
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290 BlockImpl2 block = getAddBlock(rangeStart, rangeLen, insPoint);
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291 block.setOriginAndTarget(rangeOrigin, csetTarget);
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292 insp.added(block);
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293 // indicate insPoint moved down number of lines we just reported
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294 insPoint += rangeLen;
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295 }
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296 } else {
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297 BlockImpl2 block = getAddBlock(s2From, s2To - s2From, s1InsertPoint);
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298 block.setOriginAndTarget(csetOrigin, csetTarget);
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299 insp.added(block);
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300 }
542
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301 }
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302
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303 @Override
543
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304 protected void deleted(int s2DeletePoint, int s1From, int s1To) {
545
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305 BlockImpl2 block = new BlockImpl2(seq1, null, s1From, s1To - s1From, -1, -1, -1, s2DeletePoint);
549
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306 block.setOriginAndTarget(csetOrigin, csetTarget);
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307 insp.deleted(block);
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308 }
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309
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310 @Override
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311 protected void unchanged(int s1From, int s2From, int length) {
545
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312 BlockImpl1 block = new BlockImpl1(s1From, s2From, length);
549
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313 block.setOriginAndTarget(csetOrigin, csetTarget);
545
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314 insp.same(block);
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315 }
549
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316
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317 private BlockImpl2 getAddBlock(int start, int len, int insPoint) {
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318 return new BlockImpl2(null, seq2, -1, -1, start, len, insPoint, -1);
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319 }
545
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320 }
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321
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322 static class BlockImpl implements Block {
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323
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324 private int originCset;
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325 private int targetCset;
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326
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327 void setOriginAndTarget(int originChangesetIndex, int targetChangesetIndex) {
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328 // XXX perhaps, shall be part of Inspector API, rather than Block's
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329 // as they don't change between blocks (although the moment about merged revisions)
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330 // is not yet clear to me
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331 originCset = originChangesetIndex;
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332 targetCset = targetChangesetIndex;
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333 }
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334
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335 public int originChangesetIndex() {
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336 return originCset;
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337 }
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338
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339 public int targetChangesetIndex() {
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340 return targetCset;
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341 }
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342 }
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343
545
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344 static class BlockImpl1 extends BlockImpl implements EqualBlock {
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345 private final int start1, start2;
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346 private final int length;
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347
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348 BlockImpl1(int blockStartSeq1, int blockStartSeq2, int blockLength) {
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349 start1 = blockStartSeq1;
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350 start2 = blockStartSeq2;
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351 length = blockLength;
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352 }
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353
545
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354 public int originStart() {
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355 return start1;
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356 }
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357
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358 public int targetStart() {
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359 return start2;
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360 }
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361
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362 public int length() {
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363 return length;
542
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364 }
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365
545
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366 @Override
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367 public String toString() {
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368 return String.format("@@ [%d..%d) == [%d..%d) @@", start1, start1+length, start2, start2+length);
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369 }
542
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370 }
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371
545
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372 static class BlockImpl2 extends BlockImpl implements ChangeBlock {
542
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373
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374 private final LineSequence oldSeq;
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375 private final LineSequence newSeq;
542
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376 private final int s1Start;
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377 private final int s1Len;
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378 private final int s2Start;
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379 private final int s2Len;
543
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380 private final int s1InsertPoint;
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381 private final int s2DeletePoint;
542
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382
545
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383 public BlockImpl2(LineSequence s1, LineSequence s2, int s1Start, int s1Len, int s2Start, int s2Len, int s1InsertPoint, int s2DeletePoint) {
542
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384 oldSeq = s1;
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385 newSeq = s2;
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386 this.s1Start = s1Start;
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387 this.s1Len = s1Len;
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388 this.s2Start = s2Start;
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389 this.s2Len = s2Len;
543
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390 this.s1InsertPoint = s1InsertPoint;
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391 this.s2DeletePoint = s2DeletePoint;
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392 }
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393
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394 public int insertedAt() {
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395 return s1InsertPoint;
542
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396 }
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397
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398 public int firstAddedLine() {
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399 return s2Start;
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400 }
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401
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402 public int totalAddedLines() {
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403 return s2Len;
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404 }
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405
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406 public String[] addedLines() {
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407 return generateLines(totalAddedLines(), firstAddedLine());
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408 }
543
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409
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410 public int removedAt() {
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411 return s2DeletePoint;
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412 }
542
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413
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414 public int firstRemovedLine() {
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415 return s1Start;
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416 }
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417
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418 public int totalRemovedLines() {
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419 return s1Len;
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420 }
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421
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422 public String[] removedLines() {
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423 return generateLines(totalRemovedLines(), firstRemovedLine());
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424 }
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425
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426 private String[] generateLines(int count, int startFrom) {
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427 String[] rv = new String[count];
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428 for (int i = 0; i < count; i++) {
543
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429 rv[i] = String.format("LINE %d", startFrom + i+1);
542
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430 }
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431 return rv;
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432 }
545
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433
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434 @Override
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435 public String toString() {
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436 if (s2DeletePoint == -1) {
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437 return String.format("@@ -%d,0 +%d,%d @@", insertedAt(), firstAddedLine(), totalAddedLines());
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438 } else if (s1InsertPoint == -1) {
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439 // delete only
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440 return String.format("@@ -%d,%d +%d,0 @@", firstRemovedLine(), totalRemovedLines(), removedAt());
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441 }
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442 return String.format("@@ -%d,%d +%d,%d @@", firstRemovedLine(), totalRemovedLines(), firstAddedLine(), totalAddedLines());
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443 }
542
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444 }
549
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445
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446 static class EqualBlocksCollector implements PatchGenerator.MatchInspector<LineSequence> {
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447 private final IntVector matches = new IntVector(10*3, 2*3);
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448
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449 public void begin(LineSequence s1, LineSequence s2) {
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450 }
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451
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452 public void match(int startSeq1, int startSeq2, int matchLength) {
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453 matches.add(startSeq1);
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454 matches.add(startSeq2);
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455 matches.add(matchLength);
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456 }
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457
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458 public void end() {
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459 }
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460
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461 // true when specified line in origin is equal to a line in target
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462 public boolean includesOriginLine(int ln) {
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463 return includes(ln, 0);
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464 }
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465
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466 // true when specified line in target is equal to a line in origin
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467 public boolean includesTargetLine(int ln) {
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468 return includes(ln, 1);
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469 }
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470
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471 public void intersectWithTarget(int start, int length, IntVector result) {
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472 int s = start;
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473 for (int l = start, x = start + length; l < x; l++) {
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diff changeset
474 if (!includesTargetLine(l)) {
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diff changeset
475 if (l - s > 0) {
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diff changeset
476 result.add(s);
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diff changeset
477 result.add(l - s);
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diff changeset
478 }
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diff changeset
479 s = l+1;
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diff changeset
480 }
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481 }
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482 if (s < start+length) {
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diff changeset
483 result.add(s);
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diff changeset
484 result.add((start + length) - s);
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diff changeset
485 }
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diff changeset
486 }
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487
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diff changeset
488 /*
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diff changeset
489 * intersects [start..start+length) with ranges of target lines, and based on the intersection
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
490 * breaks initial range into smaller ranges and records them into result, with marker to indicate
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
491 * whether the range is from initial range (markerSource) or is a result of the intersection with target
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
492 * (markerTarget)
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
493 */
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
494 public void combineAndMarkRangesWithTarget(int start, int length, int markerSource, int markerTarget, IntVector result) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
495 int sourceStart = start, targetStart = start, sourceEnd = start + length;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
496 for (int l = sourceStart; l < sourceEnd; l++) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
497 if (includesTargetLine(l)) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
498 // l is from target
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
499 if (sourceStart < l) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
500 // few lines from source range were not in the target, report them
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
501 result.add(markerSource);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
502 result.add(sourceStart);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
503 result.add(l - sourceStart);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
504 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
505 // indicate the earliest line from source range to use
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
506 sourceStart = l + 1;
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
507 } else {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
508 // l is not in target
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
509 if (targetStart < l) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
510 // report lines from target range
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
511 result.add(markerTarget);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
512 result.add(targetStart);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
513 result.add(l - targetStart);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
514 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
515 // next line *may* be from target
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
516 targetStart = l + 1;
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
517 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
518 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
519 // if source range end with line from target, sourceStart would be == sourceEnd, and we need to add range with markerTarget
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
520 // if source range doesn't end with target line, targetStart == sourceEnd, while sourceStart < sourceEnd
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
521 if (sourceStart < sourceEnd) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
522 assert targetStart == sourceEnd;
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
523 // something left from the source range
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
524 result.add(markerSource);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
525 result.add(sourceStart);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
526 result.add(sourceEnd - sourceStart);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
527 } else if (targetStart < sourceEnd) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
528 assert sourceStart == sourceEnd;
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
529 result.add(markerTarget);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
530 result.add(targetStart);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
531 result.add(sourceEnd - targetStart);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
532 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
533 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
534
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
535 private boolean includes(int ln, int o) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
536 for (int i = 2; i < matches.size(); o += 3, i+=3) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
537 int rangeStart = matches.get(o);
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
538 if (rangeStart > ln) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
539 return false;
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
540 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
541 int rangeLen = matches.get(i);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
542 if (rangeStart + rangeLen > ln) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
543 return true;
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
544 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
545 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
546 return false;
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
547 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
548 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
549
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
550 public static void main(String[] args) {
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
551 EqualBlocksCollector bc = new EqualBlocksCollector();
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Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
552 bc.match(-1, 5, 3);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
553 bc.match(-1, 10, 2);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
554 bc.match(-1, 15, 3);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
555 bc.match(-1, 20, 3);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
556 assert !bc.includesTargetLine(4);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
557 assert bc.includesTargetLine(7);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
558 assert !bc.includesTargetLine(8);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
559 assert bc.includesTargetLine(10);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
560 assert !bc.includesTargetLine(12);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
561 IntVector r = new IntVector();
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
562 bc.intersectWithTarget(7, 10, r);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
563 for (int i = 0; i < r.size(); i+=2) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
564 System.out.printf("[%d..%d) ", r.get(i), r.get(i) + r.get(i+1));
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
565 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
566 System.out.println();
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
567 r.clear();
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
568 bc.combineAndMarkRangesWithTarget(0, 16, 508, 514, r);
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
569 for (int i = 0; i < r.size(); i+=3) {
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
570 System.out.printf("%d:[%d..%d) ", r.get(i), r.get(i+1), r.get(i+1) + r.get(i+2));
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
571 }
83afa680555d Annotate merge revision (combined diff against two parents without looking further)
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents: 548
diff changeset
572 }
542
a71a05ec11bc Towards annotate/blame support: general outline of the functionality
Artem Tikhomirov <tikhomirov.artem@gmail.com>
parents:
diff changeset
573 }