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annotate org.eclipse.text/src/org/eclipse/jface/text/RewriteSessionEditProcessor.d @ 15:c4b1a29263fc

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Successful build of org.eclipse.text
author Frank Benoit <benoit@tionex.de>
date Sun, 15 Mar 2009 19:51:07 +0100
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1 /*******************************************************************************
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2 * Copyright (c) 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.RewriteSessionEditProcessor;
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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.SlaveDocumentEvent;
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23 import org.eclipse.jface.text.IDocumentExtension3;
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24 import org.eclipse.jface.text.IDocumentListener;
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25 import org.eclipse.jface.text.ISynchronizable;
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26 import org.eclipse.jface.text.DocumentEvent;
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27 import org.eclipse.jface.text.Position;
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28 import org.eclipse.jface.text.IRepairableDocumentExtension;
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29 import org.eclipse.jface.text.DocumentRewriteSessionType;
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30 import org.eclipse.jface.text.Region;
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31 import org.eclipse.jface.text.IDocumentExtension4;
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32 import org.eclipse.jface.text.BadLocationException;
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33 import org.eclipse.jface.text.TextMessages;
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34 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension2;
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35 import org.eclipse.jface.text.IDocumentInformationMappingExtension;
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36 import org.eclipse.jface.text.IDocumentPartitioningListenerExtension;
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37 import org.eclipse.jface.text.ITextStore;
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38 import org.eclipse.jface.text.IDocumentPartitionerExtension;
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39 import org.eclipse.jface.text.DocumentRewriteSession;
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40 import org.eclipse.jface.text.IPositionUpdater;
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41 import org.eclipse.jface.text.ISlaveDocumentManagerExtension;
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42 import org.eclipse.jface.text.ILineTracker;
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43 import org.eclipse.jface.text.ListLineTracker;
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44 import org.eclipse.jface.text.IDocumentInformationMapping;
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45 import org.eclipse.jface.text.IDocumentRewriteSessionListener;
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46 import org.eclipse.jface.text.AbstractLineTracker;
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47 import org.eclipse.jface.text.DefaultLineTracker;
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48 import org.eclipse.jface.text.BadPositionCategoryException;
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49 import org.eclipse.jface.text.BadPartitioningException;
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50 import org.eclipse.jface.text.SequentialRewriteTextStore;
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51 import org.eclipse.jface.text.IDocumentInformationMappingExtension2;
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52 import org.eclipse.jface.text.DocumentPartitioningChangedEvent;
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53 import org.eclipse.jface.text.FindReplaceDocumentAdapter;
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54 import org.eclipse.jface.text.TextUtilities;
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55 import org.eclipse.jface.text.ISlaveDocumentManager;
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56 import org.eclipse.jface.text.IDocument;
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57 import org.eclipse.jface.text.ILineTrackerExtension;
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58 import org.eclipse.jface.text.IDocumentPartitioner;
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59 import org.eclipse.jface.text.GapTextStore;
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60 import org.eclipse.jface.text.Document;
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61 import org.eclipse.jface.text.IDocumentExtension;
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62 import org.eclipse.jface.text.IDocumentPartitioningListener;
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63 import org.eclipse.jface.text.CopyOnWriteTextStore;
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64 import org.eclipse.jface.text.DefaultPositionUpdater;
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65 import org.eclipse.jface.text.Line;
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66 import org.eclipse.jface.text.DocumentRewriteSessionEvent;
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67 import org.eclipse.jface.text.IDocumentPartitionerExtension2;
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68 import org.eclipse.jface.text.ITypedRegion;
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69 import org.eclipse.jface.text.TreeLineTracker;
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71
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72
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73 import java.lang.all;
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74
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75 import org.eclipse.text.edits.CopyTargetEdit;
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76 import org.eclipse.text.edits.DeleteEdit;
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77 import org.eclipse.text.edits.InsertEdit;
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78 import org.eclipse.text.edits.MalformedTreeException;
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79 import org.eclipse.text.edits.MoveTargetEdit;
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80 import org.eclipse.text.edits.ReplaceEdit;
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81 import org.eclipse.text.edits.TextEdit;
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82 import org.eclipse.text.edits.TextEditProcessor;
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83 import org.eclipse.text.edits.TextEditVisitor;
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84 import org.eclipse.text.edits.UndoEdit;
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85
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86 /**
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87 * A text edit processor that brackets the application of edits into a document rewrite session.
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88 *
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89 * @since 3.3
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90 */
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91 public final class RewriteSessionEditProcessor : TextEditProcessor {
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92 /** The threshold for <em>large</em> text edits. */
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93 private static const int THRESHOLD= 1000;
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94
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95 /**
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96 * Text edit visitor that estimates the compound size of an edit tree in characters.
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97 */
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98 private static final class SizeVisitor : TextEditVisitor {
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99 int fSize= 0;
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100
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101 public bool visit(CopyTargetEdit edit) {
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102 fSize += edit.getLength();
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103 return super.visit(edit);
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104 }
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105
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106 public bool visit(DeleteEdit edit) {
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107 fSize += edit.getLength();
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108 return super.visit(edit);
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109 }
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110
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111 public bool visit(InsertEdit edit) {
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112 fSize += edit.getText().length();
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113 return super.visit(edit);
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114 }
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115
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116 public bool visit(MoveTargetEdit edit) {
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117 fSize += edit.getLength();
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118 return super.visit(edit);
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119 }
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120
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121 public bool visit(ReplaceEdit edit) {
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122 fSize += Math.max(edit.getLength(), edit.getText().length());
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123 return super.visit(edit);
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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 * Constructs a new edit processor for the given document.
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129 *
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130 * @param document the document to manipulate
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131 * @param root the root of the text edit tree describing the modifications. By passing a text
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132 * edit a a text edit processor the ownership of the edit is transfered to the text edit
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133 * processors. Clients must not modify the edit (e.g adding new children) any longer.
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134 * @param style {@link TextEdit#NONE}, {@link TextEdit#CREATE_UNDO} or
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135 * {@link TextEdit#UPDATE_REGIONS})
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136 */
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137 public this(IDocument document, TextEdit root, int style) {
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138 super(document, root, style);
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139 }
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140
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141 /*
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142 * @see org.eclipse.text.edits.TextEditProcessor#performEdits()
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143 */
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144 public UndoEdit performEdits() {
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145 IDocument document= getDocument();
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146 if (!( cast(IDocumentExtension4)document ))
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147 return super.performEdits();
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148
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149 IDocumentExtension4 extension= cast(IDocumentExtension4) document;
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150 bool isLargeEdit= isLargeEdit(getRoot());
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151 DocumentRewriteSessionType type= isLargeEdit ? DocumentRewriteSessionType.UNRESTRICTED : DocumentRewriteSessionType.UNRESTRICTED_SMALL;
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152
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153 DocumentRewriteSession session= extension.startRewriteSession(type);
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154 try {
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155 return super.performEdits();
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156 } finally {
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157 extension.stopRewriteSession(session);
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158 }
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159 }
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160
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161 /**
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162 * Returns <code>true</code> if the passed edit is considered <em>large</em>,
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163 * <code>false</code> otherwise.
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164 *
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165 * @param edit the edit to check
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166 * @return <code>true</code> if <code>edit</code> is considered <em>large</em>,
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167 * <code>false</code> otherwise
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168 * @since 3.3
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169 */
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170 public static bool isLargeEdit(TextEdit edit) {
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171 SizeVisitor sizeVisitor= new SizeVisitor();
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172 edit.accept(sizeVisitor);
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173 return sizeVisitor.fSize > THRESHOLD;
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174 }
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175
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176 }