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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.ListLineTracker;
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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.IDocumentInformationMapping;
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45 import org.eclipse.jface.text.IDocumentRewriteSessionListener;
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46 import org.eclipse.jface.text.Assert;
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47 import org.eclipse.jface.text.AbstractLineTracker;
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48 import org.eclipse.jface.text.DefaultLineTracker;
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49 import org.eclipse.jface.text.BadPositionCategoryException;
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50 import org.eclipse.jface.text.BadPartitioningException;
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51 import org.eclipse.jface.text.SequentialRewriteTextStore;
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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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71
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72
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73 import java.lang.all;
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74 import java.util.List;
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75 import java.util.ArrayList;
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76 import java.util.Set;
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77
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78 import org.eclipse.jface.text.AbstractLineTracker;
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79
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80 /**
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81 * Abstract, read-only implementation of <code>ILineTracker</code>. It lets the definition of
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82 * line delimiters to subclasses. Assuming that '\n' is the only line delimiter, this abstract
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83 * implementation defines the following line scheme:
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84 * <ul>
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85 * <li> "" -> [0,0]
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86 * <li> "a" -> [0,1]
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87 * <li> "\n" -> [0,1], [1,0]
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88 * <li> "a\n" -> [0,2], [2,0]
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89 * <li> "a\nb" -> [0,2], [2,1]
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90 * <li> "a\nbc\n" -> [0,2], [2,3], [5,0]
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91 * </ul>
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92 * This class must be subclassed.
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93 *
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94 * @since 3.2
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95 */
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96 abstract class ListLineTracker : ILineTracker {
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97
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98 /** The line information */
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99 private const List fLines;
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100 /** The length of the tracked text */
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101 private int fTextLength;
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102
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103 /**
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104 * Creates a new line tracker.
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105 */
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106 protected this() {
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107 fLines= new ArrayList();
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108 }
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109
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110 /**
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111 * Binary search for the line at a given offset.
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112 *
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113 * @param offset the offset whose line should be found
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114 * @return the line of the offset
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115 */
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116 private int findLine(int offset) {
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117
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118 if (fLines.size() is 0)
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119 return -1;
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120
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121 int left= 0;
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122 int right= fLines.size() - 1;
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123 int mid= 0;
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124 Line line= null;
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125
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126 while (left < right) {
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127
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128 mid= (left + right) / 2;
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129
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130 line= cast(Line) fLines.get(mid);
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131 if (offset < line.offset) {
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132 if (left is mid)
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133 right= left;
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134 else
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135 right= mid - 1;
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136 } else if (offset > line.offset) {
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137 if (right is mid)
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138 left= right;
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139 else
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140 left= mid + 1;
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141 } else if (offset is line.offset) {
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142 left= right= mid;
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143 }
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144 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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145
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146 line= cast(Line) fLines.get(left);
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147 if (line.offset > offset)
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148 --left;
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149 return left;
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parents:
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150 }
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parents:
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151
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
152 /**
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Frank Benoit <benoit@tionex.de>
parents:
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153 * Returns the number of lines covered by the specified text range.
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
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154 *
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
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155 * @param startLine the line where the text range starts
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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156 * @param offset the start offset of the text range
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Frank Benoit <benoit@tionex.de>
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157 * @param length the length of the text range
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158 * @return the number of lines covered by this text range
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159 * @exception BadLocationException if range is undefined in this tracker
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160 */
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161 private int getNumberOfLines(int startLine, int offset, int length) {
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162
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163 if (length is 0)
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164 return 1;
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165
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166 int target= offset + length;
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167
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168 Line l= cast(Line) fLines.get(startLine);
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169
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170 if (l.delimiter is null)
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171 return 1;
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172
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173 if (l.offset + l.length > target)
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174 return 1;
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175
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176 if (l.offset + l.length is target)
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177 return 2;
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178
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179 return getLineNumberOfOffset(target) - startLine + 1;
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180 }
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181
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182 /*
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183 * @see org.eclipse.jface.text.ILineTracker#getLineLength(int)
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184 */
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185 public final int getLineLength(int line) {
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186 int lines= fLines.size();
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187
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188 if (line < 0 || line > lines)
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189 throw new BadLocationException();
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190
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191 if (lines is 0 || lines is line)
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192 return 0;
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193
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194 Line l= cast(Line) fLines.get(line);
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195 return l.length;
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196 }
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197
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198 /*
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199 * @see org.eclipse.jface.text.ILineTracker#getLineNumberOfOffset(int)
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200 */
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201 public final int getLineNumberOfOffset(int position) {
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202 if (position < 0 || position > fTextLength)
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203 throw new BadLocationException();
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204
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205 if (position is fTextLength) {
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206
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207 int lastLine= fLines.size() - 1;
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208 if (lastLine < 0)
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209 return 0;
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210
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211 Line l= cast(Line) fLines.get(lastLine);
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212 return (l.delimiter !is null ? lastLine + 1 : lastLine);
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213 }
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214
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215 return findLine(position);
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216 }
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217
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218 /*
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219 * @see org.eclipse.jface.text.ILineTracker#getLineInformationOfOffset(int)
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220 */
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221 public final IRegion getLineInformationOfOffset(int position) {
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222 if (position > fTextLength)
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223 throw new BadLocationException();
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224
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225 if (position is fTextLength) {
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226 int size= fLines.size();
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227 if (size is 0)
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Frank Benoit <benoit@tionex.de>
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228 return new Region(0, 0);
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229 Line l= cast(Line) fLines.get(size - 1);
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230 return (l.delimiter !is null ? new Line(fTextLength, 0) : new Line(fTextLength - l.length, l.length));
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231 }
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232
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Frank Benoit <benoit@tionex.de>
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233 return getLineInformation(findLine(position));
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234 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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235
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Frank Benoit <benoit@tionex.de>
parents:
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236 /*
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
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237 * @see org.eclipse.jface.text.ILineTracker#getLineInformation(int)
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238 */
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Frank Benoit <benoit@tionex.de>
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239 public final IRegion getLineInformation(int line) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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240 int lines= fLines.size();
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241
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
242 if (line < 0 || line > lines)
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Frank Benoit <benoit@tionex.de>
parents:
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243 throw new BadLocationException();
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244
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Frank Benoit <benoit@tionex.de>
parents:
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245 if (lines is 0)
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Frank Benoit <benoit@tionex.de>
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246 return new Line(0, 0);
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247
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Frank Benoit <benoit@tionex.de>
parents:
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248 if (line is lines) {
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249 Line l= cast(Line) fLines.get(line - 1);
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Frank Benoit <benoit@tionex.de>
parents:
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250 return new Line(l.offset + l.length, 0);
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
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251 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
252
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
253 Line l= cast(Line) fLines.get(line);
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parents:
diff changeset
254 return (l.delimiter !is null ? new Line(l.offset, l.length - l.delimiter.length()) : l);
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parents:
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255 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
256
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
257 /*
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
258 * @see org.eclipse.jface.text.ILineTracker#getLineOffset(int)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
259 */
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
260 public final int getLineOffset(int line) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
261 int lines= fLines.size();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
262
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
263 if (line < 0 || line > lines)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
264 throw new BadLocationException();
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
265
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
266 if (lines is 0)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
267 return 0;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
268
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
269 if (line is lines) {
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
270 Line l= cast(Line) fLines.get(line - 1);
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
271 if (l.delimiter !is null)
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
272 return l.offset + l.length;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
273 throw new BadLocationException();
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
274 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
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parents:
diff changeset
275
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
276 Line l= cast(Line) fLines.get(line);
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
277 return l.offset;
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
278 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
279
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
280 /*
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
281 * @see org.eclipse.jface.text.ILineTracker#getNumberOfLines()
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
282 */
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
283 public final int getNumberOfLines() {
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diff changeset
284 int lines= fLines.size();
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parents:
diff changeset
285
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
286 if (lines is 0)
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
287 return 1;
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
288
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
289 Line l= cast(Line) fLines.get(lines - 1);
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
290 return (l.delimiter !is null ? lines + 1 : lines);
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Frank Benoit <benoit@tionex.de>
parents:
diff changeset
291 }
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
diff changeset
292
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
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293 /*
bc29606a740c Added dwt-addons in original directory structure of eclipse.org
Frank Benoit <benoit@tionex.de>
parents:
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294 * @see org.eclipse.jface.text.ILineTracker#getNumberOfLines(int, int)
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295 */
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296 public final int getNumberOfLines(int position, int length) {
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297
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298 if (position < 0 || position + length > fTextLength)
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299 throw new BadLocationException();
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300
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301 if (length is 0) // optimization
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302 return 1;
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303
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304 return getNumberOfLines(getLineNumberOfOffset(position), position, length);
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305 }
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306
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307 /*
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308 * @see org.eclipse.jface.text.ILineTracker#computeNumberOfLines(java.lang.String)
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309 */
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310 public final int computeNumberOfLines(String text) {
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311 int count= 0;
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312 int start= 0;
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313 AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, start);
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314 while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) {
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315 ++count;
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316 start= delimiterInfo.delimiterIndex + delimiterInfo.delimiterLength;
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317 delimiterInfo= nextDelimiterInfo(text, start);
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318 }
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319 return count;
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320 }
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321
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322 /*
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323 * @see org.eclipse.jface.text.ILineTracker#getLineDelimiter(int)
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324 */
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325 public final String getLineDelimiter(int line) {
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326 int lines= fLines.size();
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327
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328 if (line < 0 || line > lines)
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329 throw new BadLocationException();
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330
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331 if (lines is 0)
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332 return null;
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333
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334 if (line is lines)
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335 return null;
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336
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337 Line l= cast(Line) fLines.get(line);
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338 return l.delimiter;
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339 }
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340
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341 /**
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342 * Returns the information about the first delimiter found in the given text starting at the
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343 * given offset.
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344 *
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345 * @param text the text to be searched
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346 * @param offset the offset in the given text
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347 * @return the information of the first found delimiter or <code>null</code>
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348 */
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349 protected abstract AbstractLineTracker_DelimiterInfo nextDelimiterInfo(String text, int offset);
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350
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351 /**
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352 * Creates the line structure for the given text. Newly created lines are inserted into the line
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353 * structure starting at the given position. Returns the number of newly created lines.
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354 *
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355 * @param text the text for which to create a line structure
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356 * @param insertPosition the position at which the newly created lines are inserted into the
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357 * tracker's line structure
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358 * @param offset the offset of all newly created lines
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359 * @return the number of newly created lines
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360 */
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361 private int createLines(String text, int insertPosition, int offset) {
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362
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363 int count= 0;
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364 int start= 0;
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365 AbstractLineTracker_DelimiterInfo delimiterInfo= nextDelimiterInfo(text, 0);
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366
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367 while (delimiterInfo !is null && delimiterInfo.delimiterIndex > -1) {
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368
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369 int index= delimiterInfo.delimiterIndex + (delimiterInfo.delimiterLength - 1);
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370
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371 if (insertPosition + count >= fLines.size())
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372 fLines.add(new Line(offset + start, offset + index, delimiterInfo.delimiter));
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373 else
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374 fLines.add(insertPosition + count, new Line(offset + start, offset + index, delimiterInfo.delimiter));
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375
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376 ++count;
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377 start= index + 1;
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378 delimiterInfo= nextDelimiterInfo(text, start);
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379 }
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380
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381 if (start < text.length()) {
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382 if (insertPosition + count < fLines.size()) {
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383 // there is a line below the current
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384 Line l= cast(Line) fLines.get(insertPosition + count);
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385 int delta= text.length() - start;
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386 l.offset-= delta;
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387 l.length+= delta;
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388 } else {
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389 fLines.add(new Line(offset + start, offset + text.length() - 1, null));
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390 ++count;
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391 }
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392 }
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393
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394 return count;
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395 }
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396
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397 /*
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398 * @see org.eclipse.jface.text.ILineTracker#replace(int, int, java.lang.String)
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399 */
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400 public final void replace(int position, int length, String text) {
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401 throw new UnsupportedOperationException();
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402 }
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403
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404 /*
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405 * @see org.eclipse.jface.text.ILineTracker#set(java.lang.String)
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406 */
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407 public final void set(String text) {
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408 fLines.clear();
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409 if (text !is null) {
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410 fTextLength= text.length();
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411 createLines(text, 0, 0);
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412 }
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413 }
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414
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415 /**
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416 * Returns the internal data structure, a {@link List} of {@link Line}s. Used only by
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417 * {@link TreeLineTracker#TreeLineTracker(ListLineTracker)}.
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418 *
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419 * @return the internal list of lines.
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420 */
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421 final List getLines() {
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422 return fLines;
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423 }
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424 }