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annotate org.eclipse.text/src/org/eclipse/jface/text/SequentialRewriteTextStore.d @ 14:5feec68b4556

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First run of automatic package imports
author Frank Benoit <benoit@tionex.de>
date Sat, 14 Mar 2009 18:41:58 +0100
parents bc29606a740c
children c4b1a29263fc
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1 /*******************************************************************************
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2 * Copyright (c) 2000, 2006 IBM Corporation and others.
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3 * All rights reserved. This program and the accompanying materials
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4 * are made available under the terms of the Eclipse Public License v1.0
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5 * which accompanies this distribution, and is available at
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6 * http://www.eclipse.org/legal/epl-v10.html
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7 *
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8 * Contributors:
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9 * IBM Corporation - initial API and implementation
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10 * Port to the D programming language:
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11 * Frank Benoit <benoit@tionex.de>
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12 *******************************************************************************/
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13 module org.eclipse.jface.text.SequentialRewriteTextStore;
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14 import org.eclipse.jface.text.IRepairableDocument;
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15 import org.eclipse.jface.text.AbstractDocument;
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16 import org.eclipse.jface.text.IDocumentPartitionerExtension3;
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17 import org.eclipse.jface.text.ConfigurableLineTracker;
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18 import org.eclipse.jface.text.IRegion;
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19 import org.eclipse.jface.text.TypedRegion;
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20 import org.eclipse.jface.text.IDocumentExtension2;
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21 import org.eclipse.jface.text.TypedPosition;
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22 import org.eclipse.jface.text.RewriteSessionEditProcessor;
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23 import org.eclipse.jface.text.SlaveDocumentEvent;
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24 import org.eclipse.jface.text.IDocumentExtension3;
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25 import org.eclipse.jface.text.IDocumentListener;
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26 import org.eclipse.jface.text.ISynchronizable;
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27 import org.eclipse.jface.text.DocumentEvent;
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28 import org.eclipse.jface.text.Position;
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29 import org.eclipse.jface.text.IRepairableDocumentExtension;
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30 import org.eclipse.jface.text.DocumentRewriteSessionType;
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31 import org.eclipse.jface.text.Region;
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32 import org.eclipse.jface.text.IDocumentExtension4;
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33 import org.eclipse.jface.text.BadLocationException;
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34 import org.eclipse.jface.text.TextMessages;
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35 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2;
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36 import org.eclipse.jface.text.IDocumentInformationMappingExtension;
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37 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension;
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38 import org.eclipse.jface.text.ITextStore;
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39 import org.eclipse.jface.text.IDocumentPartitionerExtension;
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40 import org.eclipse.jface.text.DocumentRewriteSession;
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41 import org.eclipse.jface.text.IPositionUpdater;
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42 import org.eclipse.jface.text.ISlaveDocumentManagerExtension;
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43 import org.eclipse.jface.text.ILineTracker;
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44 import org.eclipse.jface.text.ListLineTracker;
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45 import org.eclipse.jface.text.IDocumentInformationMapping;
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46 import org.eclipse.jface.text.IDocumentRewriteSessionListener;
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47 import org.eclipse.jface.text.Assert;
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48 import org.eclipse.jface.text.AbstractLineTracker;
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49 import org.eclipse.jface.text.DefaultLineTracker;
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50 import org.eclipse.jface.text.BadPositionCategoryException;
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51 import org.eclipse.jface.text.BadPartitioningException;
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52 import org.eclipse.jface.text.IDocumentInformationMappingExtension2;
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53 import org.eclipse.jface.text.DocumentPartitioningChangedEvent;
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54 import org.eclipse.jface.text.FindReplaceDocumentAdapter;
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55 import org.eclipse.jface.text.TextUtilities;
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56 import org.eclipse.jface.text.ISlaveDocumentManager;
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57 import org.eclipse.jface.text.IDocument;
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58 import org.eclipse.jface.text.ILineTrackerExtension;
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59 import org.eclipse.jface.text.IDocumentPartitioner;
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60 import org.eclipse.jface.text.GapTextStore;
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61 import org.eclipse.jface.text.Document;
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62 import org.eclipse.jface.text.IDocumentExtension;
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63 import org.eclipse.jface.text.IDocumentPartitioningListener;
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64 import org.eclipse.jface.text.CopyOnWriteTextStore;
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65 import org.eclipse.jface.text.DefaultPositionUpdater;
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66 import org.eclipse.jface.text.Line;
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67 import org.eclipse.jface.text.DocumentRewriteSessionEvent;
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68 import org.eclipse.jface.text.IDocumentPartitionerExtension2;
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69 import org.eclipse.jface.text.ITypedRegion;
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70 import org.eclipse.jface.text.TreeLineTracker;
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73
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74 import java.lang.all;
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75 import java.util.LinkedList;
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76 import java.util.Iterator;
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77 import java.util.Set;
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81
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82
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83 /**
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84 * A text store that optimizes a given source text store for sequential rewriting.
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85 * While rewritten it keeps a list of replace command that serve as patches for
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86 * the source store. Only on request, the source store is indeed manipulated
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87 * by applying the patch commands to the source text store.
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88 *
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89 * @since 2.0
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90 * @deprecated since 3.3 as {@link GapTextStore} performs better even for sequential rewrite scenarios
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91 */
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92 public class SequentialRewriteTextStore : ITextStore {
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93
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94 /**
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95 * A buffered replace command.
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96 */
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97 private static class Replace {
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98 public int newOffset;
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99 public const int offset;
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100 public const int length;
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101 public const String text;
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102
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103 public this(int offset, int newOffset, int length, String text) {
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104 this.newOffset= newOffset;
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105 this.offset= offset;
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106 this.length= length;
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107 this.text= text;
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108 }
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109 }
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110
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111 /** The list of buffered replacements. */
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112 private LinkedList fReplaceList;
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113 /** The source text store */
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114 private ITextStore fSource;
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115 /** A flag to enforce sequential access. */
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116 private static const bool ASSERT_SEQUENTIALITY= false;
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117
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118
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119 /**
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120 * Creates a new sequential rewrite store for the given source store.
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121 *
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122 * @param source the source text store
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123 */
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124 public this(ITextStore source) {
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125 fReplaceList= new LinkedList();
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126 fSource= source;
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127 }
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128
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129 /**
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130 * Returns the source store of this rewrite store.
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131 *
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132 * @return the source store of this rewrite store
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133 */
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134 public ITextStore getSourceStore() {
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135 commit();
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136 return fSource;
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137 }
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138
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139 /*
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140 * @see org.eclipse.jface.text.ITextStore#replace(int, int, java.lang.String)
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141 */
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142 public void replace(int offset, int length, String text) {
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143 if (text is null)
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144 text= ""; //$NON-NLS-1$
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145
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diff changeset
146 if (fReplaceList.size() is 0) {
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147 fReplaceList.add(new Replace(offset, offset, length, text));
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148
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149 } else {
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150 Replace firstReplace= cast(Replace) fReplaceList.getFirst();
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151 Replace lastReplace= cast(Replace) fReplaceList.getLast();
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152
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153 // backward
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154 if (offset + length <= firstReplace.newOffset) {
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155 int delta= text.length - length;
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156 if (delta !is 0) {
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157 for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) {
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158 Replace replace= cast(Replace) i.next();
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159 replace.newOffset += delta;
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160 }
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161 }
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162
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163 fReplaceList.addFirst(new Replace(offset, offset, length, text));
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164
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165 // forward
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166 } else if (offset >= lastReplace.newOffset + lastReplace.text.length) {
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167 int delta= getDelta(lastReplace);
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168 fReplaceList.add(new Replace(offset - delta, offset, length, text));
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169
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170 } else if (ASSERT_SEQUENTIALITY) {
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171 throw new IllegalArgumentException(null);
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172
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173 } else {
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174 commit();
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175 fSource.replace(offset, length, text);
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176 }
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177 }
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178 }
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179
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180 /*
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181 * @see org.eclipse.jface.text.ITextStore#set(java.lang.String)
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182 */
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183 public void set(String text) {
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184 fSource.set(text);
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185 fReplaceList.clear();
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186 }
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187
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188 /*
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189 * @see org.eclipse.jface.text.ITextStore#get(int, int)
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190 */
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191 public String get(int offset, int length) {
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192
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193 if (fReplaceList.isEmpty())
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194 return fSource.get(offset, length);
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195
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196
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197 Replace firstReplace= cast(Replace) fReplaceList.getFirst();
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198 Replace lastReplace= cast(Replace) fReplaceList.getLast();
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199
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200 // before
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201 if (offset + length <= firstReplace.newOffset) {
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202 return fSource.get(offset, length);
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203
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204 // after
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205 } else if (offset >= lastReplace.newOffset + lastReplace.text.length) {
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206 int delta= getDelta(lastReplace);
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207 return fSource.get(offset - delta, length);
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208
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209 } else if (ASSERT_SEQUENTIALITY) {
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210 throw new IllegalArgumentException(null);
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211
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212 } else {
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213
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214 int delta= 0;
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215 for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) {
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216 Replace replace= cast(Replace) i.next();
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217
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218 if (offset + length < replace.newOffset) {
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219 return fSource.get(offset - delta, length);
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220
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221 } else if (offset >= replace.newOffset && offset + length <= replace.newOffset + replace.text.length) {
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222 return replace.text.substring(offset - replace.newOffset, offset - replace.newOffset + length);
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223
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224 } else if (offset >= replace.newOffset + replace.text.length) {
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225 delta= getDelta(replace);
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226 continue;
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227
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228 } else {
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229 commit();
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230 return fSource.get(offset, length);
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231 }
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232 }
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233
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234 return fSource.get(offset - delta, length);
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235 }
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236
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237 }
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238
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239 /**
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240 * Returns the difference between the offset in the source store and the "same" offset in the
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241 * rewrite store after the replace operation.
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242 *
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243 * @param replace the replace command
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244 * @return the difference
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245 */
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246 private static final int getDelta(Replace replace) {
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247 return replace.newOffset - replace.offset + replace.text.length() - replace.length;
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248 }
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249
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250 /*
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parents:
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251 * @see org.eclipse.jface.text.ITextStore#get(int)
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252 */
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253 public char get(int offset) {
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254 if (fReplaceList.isEmpty())
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255 return fSource.get(offset);
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diff changeset
256
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diff changeset
257 Replace firstReplace= cast(Replace) fReplaceList.getFirst();
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diff changeset
258 Replace lastReplace= cast(Replace) fReplaceList.getLast();
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259
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parents:
diff changeset
260 // before
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parents:
diff changeset
261 if (offset < firstReplace.newOffset) {
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parents:
diff changeset
262 return fSource.get(offset);
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parents:
diff changeset
263
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
264 // after
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diff changeset
265 } else if (offset >= lastReplace.newOffset + lastReplace.text.length()) {
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diff changeset
266 int delta= getDelta(lastReplace);
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267 return fSource.get(offset - delta);
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268
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269 } else if (ASSERT_SEQUENTIALITY) {
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270 throw new IllegalArgumentException(null);
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271
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272 } else {
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273
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diff changeset
274 int delta= 0;
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275 for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) {
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diff changeset
276 Replace replace= cast(Replace) i.next();
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diff changeset
277
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diff changeset
278 if (offset < replace.newOffset)
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diff changeset
279 return fSource.get(offset - delta);
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280
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281 else if (offset < replace.newOffset + replace.text.length())
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diff changeset
282 return replace.text.charAt(offset - replace.newOffset);
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diff changeset
283
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284 delta= getDelta(replace);
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285 }
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parents:
diff changeset
286
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diff changeset
287 return fSource.get(offset - delta);
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288 }
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289 }
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290
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291 /*
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292 * @see org.eclipse.jface.text.ITextStore#getLength()
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293 */
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294 public int getLength() {
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295 if (fReplaceList.isEmpty())
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296 return fSource.getLength();
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297
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298 Replace lastReplace= cast(Replace) fReplaceList.getLast();
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299 return fSource.getLength() + getDelta(lastReplace);
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300 }
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301
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302 /**
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303 * Disposes this rewrite store.
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304 */
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305 public void dispose() {
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306 fReplaceList= null;
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307 fSource= null;
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308 }
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309
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310 /**
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311 * Commits all buffered replace commands.
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312 */
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313 private void commit() {
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314
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315 if (fReplaceList.isEmpty())
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316 return;
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317
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318 StringBuffer buffer= new StringBuffer();
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319
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320 int delta= 0;
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321 for (Iterator i= fReplaceList.iterator(); i.hasNext(); ) {
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322 Replace replace= cast(Replace) i.next();
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323
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324 int offset= buffer.length() - delta;
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325 buffer.append(fSource.get(offset, replace.offset - offset));
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326 buffer.append(replace.text);
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327 delta= getDelta(replace);
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328 }
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329
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330 int offset= buffer.length() - delta;
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331 buffer.append(fSource.get(offset, fSource.getLength() - offset));
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332
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333 fSource.set(buffer.toString());
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334 fReplaceList.clear();
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335 }
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336 }