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annotate org.eclipse.text/src/org/eclipse/text/edits/MoveTargetEdit.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
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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.text.edits.MoveTargetEdit;
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14 import org.eclipse.text.edits.MalformedTreeException;
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15 import org.eclipse.text.edits.TextEditGroup;
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16 import org.eclipse.text.edits.RangeMarker;
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17 import org.eclipse.text.edits.TextEditCopier;
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18 import org.eclipse.text.edits.UndoEdit;
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19 import org.eclipse.text.edits.InsertEdit;
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20 import org.eclipse.text.edits.MoveSourceEdit;
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21 import org.eclipse.text.edits.CopyTargetEdit;
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22 import org.eclipse.text.edits.TextEditProcessor;
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23 import org.eclipse.text.edits.TextEditVisitor;
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24 import org.eclipse.text.edits.TextEdit;
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25 import org.eclipse.text.edits.TreeIterationInfo;
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26 import org.eclipse.text.edits.TextEditMessages;
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27 import org.eclipse.text.edits.CopySourceEdit;
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28 import org.eclipse.text.edits.ReplaceEdit;
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29 import org.eclipse.text.edits.MultiTextEdit;
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30 import org.eclipse.text.edits.EditDocument;
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31 import org.eclipse.text.edits.UndoCollector;
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32 import org.eclipse.text.edits.ISourceModifier;
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33 import org.eclipse.text.edits.CopyingRangeMarker;
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34 import org.eclipse.text.edits.DeleteEdit;
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37
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38 import java.lang.all;
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39 import java.util.List;
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40 import java.util.ArrayList;
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41 import java.util.Set;
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44
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45 import org.eclipse.jface.text.BadLocationException;
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46 import org.eclipse.jface.text.IDocument;
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47
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48 /**
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49 * A move target edit denotes the target of a move operation. Move
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50 * target edits are only valid inside an edit tree if they have a
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51 * corresponding source edit. Furthermore a target edit can't
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52 * can't be a direct or indirect child of its associated source edit.
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53 * Violating one of two requirements will result in a <code>
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54 * MalformedTreeException</code> when executing the edit tree.
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55 * <p>
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56 * Move target edits can't be used as a parent for other edits.
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57 * Trying to add an edit to a move target edit results in a <code>
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58 * MalformedTreeException</code> as well.
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59 *
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60 * @see org.eclipse.text.edits.MoveSourceEdit
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61 * @see org.eclipse.text.edits.CopyTargetEdit
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62 *
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63 * @since 3.0
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64 */
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65 public final class MoveTargetEdit : TextEdit {
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66
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67 private MoveSourceEdit fSource;
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68
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69 /**
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70 * Constructs a new move target edit
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71 *
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72 * @param offset the edit's offset
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73 */
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74 public this(int offset) {
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75 super(offset, 0);
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76 }
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77
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78 /**
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79 * Constructs an new move target edit
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80 *
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81 * @param offset the edit's offset
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82 * @param source the corresponding source edit
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83 */
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84 public this(int offset, MoveSourceEdit source) {
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85 this(offset);
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86 setSourceEdit(source);
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87 }
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88
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89 /*
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90 * Copy constructor
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91 */
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92 private this(MoveTargetEdit other) {
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93 super(other);
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94 }
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95
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96 /**
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97 * Returns the associated source edit or <code>null</code>
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98 * if no source edit is associated yet.
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99 *
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100 * @return the source edit or <code>null</code>
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101 */
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102 public MoveSourceEdit getSourceEdit() {
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103 return fSource;
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104 }
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105
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106 /**
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107 * Sets the source edit.
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108 *
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109 * @param edit the source edit
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110 *
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111 * @exception MalformedTreeException is thrown if the target edit
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112 * is a direct or indirect child of the source edit
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113 */
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114 public void setSourceEdit(MoveSourceEdit edit) {
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115 if (fSource !is edit) {
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116 fSource= edit;
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117 fSource.setTargetEdit(this);
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118 TextEdit parent= getParent();
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119 while (parent !is null) {
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120 if (parent is fSource)
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121 throw new MalformedTreeException(parent, this, TextEditMessages.getString("MoveTargetEdit.wrong_parent")); //$NON-NLS-1$
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122 parent= parent.getParent();
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123 }
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124 }
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125 }
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126
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127 /*
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128 * @see TextEdit#doCopy
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129 */
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130 protected TextEdit doCopy() {
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131 return new MoveTargetEdit(this);
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132 }
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133
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134 /*
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135 * @see TextEdit#postProcessCopy
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136 */
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137 protected void postProcessCopy(TextEditCopier copier) {
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138 if (fSource !is null) {
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139 MoveTargetEdit target= cast(MoveTargetEdit)copier.getCopy(this);
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140 MoveSourceEdit source= cast(MoveSourceEdit)copier.getCopy(fSource);
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141 if (target !is null && source !is null)
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142 target.setSourceEdit(source);
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143 }
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144 }
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145
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146 /*
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147 * @see TextEdit#accept0
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148 */
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149 protected void accept0(TextEditVisitor visitor) {
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150 bool visitChildren= visitor.visit(this);
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151 if (visitChildren) {
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152 acceptChildren(visitor);
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153 }
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154 }
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155
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156 //---- consistency check ----------------------------------------------------------
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157
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158 /*
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159 * @see TextEdit#traverseConsistencyCheck
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160 */
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161 int traverseConsistencyCheck(TextEditProcessor processor, IDocument document, List sourceEdits) {
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162 return super.traverseConsistencyCheck(processor, document, sourceEdits) + 1;
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163 }
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164
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165 /*
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166 * @see TextEdit#performConsistencyCheck
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167 */
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168 void performConsistencyCheck(TextEditProcessor processor, IDocument document) {
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169 if (fSource is null)
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170 throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("MoveTargetEdit.no_source")); //$NON-NLS-1$
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171 if (fSource.getTargetEdit() !is this)
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172 throw new MalformedTreeException(getParent(), this, TextEditMessages.getString("MoveTargetEdit.different_target")); //$NON-NLS-1$
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173 }
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174
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175 //---- document updating ----------------------------------------------------------------
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176
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177 /*
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178 * @see TextEdit#performDocumentUpdating
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179 */
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180 int performDocumentUpdating(IDocument document) {
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181 String source= fSource.getContent();
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182 document.replace(getOffset(), getLength(), source);
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183 fDelta= source.length() - getLength();
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184
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185 MultiTextEdit sourceRoot= fSource.getSourceRoot();
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186 if (sourceRoot !is null) {
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187 sourceRoot.internalMoveTree(getOffset());
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188 TextEdit[] sourceChildren= sourceRoot.removeChildren();
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189 List children= new ArrayList(sourceChildren.length);
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190 for (int i= 0; i < sourceChildren.length; i++) {
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191 TextEdit child= sourceChildren[i];
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192 child.internalSetParent(this);
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193 children.add(child);
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194 }
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195 internalSetChildren(children);
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196 }
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197 fSource.clearContent();
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198 return fDelta;
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199 }
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200
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201 //---- region updating --------------------------------------------------------------
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202
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203 /*
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204 * @see org.eclipse.text.edits.TextEdit#traversePassThree
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205 */
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206 int traverseRegionUpdating(TextEditProcessor processor, IDocument document, int accumulatedDelta, bool delete_) {
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207 // the children got already updated / normalized while they got removed
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208 // from the source edit. So we only have to adjust the offset computed to
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209 // far.
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210 if (delete_) {
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211 deleteTree();
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212 } else {
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213 internalMoveTree(accumulatedDelta);
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214 }
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215 return accumulatedDelta + fDelta;
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216 }
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217
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218 bool deleteChildren() {
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219 return false;
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220 }
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221 }