Mercurial > projects > dwt2
annotate org.eclipse.jface.text/src/org/eclipse/jface/text/reconciler/DirtyRegionQueue.d @ 12:bc29606a740c
Added dwt-addons in original directory structure of eclipse.org
author | Frank Benoit <benoit@tionex.de> |
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date | Sat, 14 Mar 2009 18:23:29 +0100 |
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1 /******************************************************************************* |
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2 * Copyright (c) 2000, 2008 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.reconciler.DirtyRegionQueue; |
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14 |
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15 import org.eclipse.jface.text.reconciler.IReconciler; // packageimport |
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16 import org.eclipse.jface.text.reconciler.IReconcilingStrategy; // packageimport |
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17 import org.eclipse.jface.text.reconciler.AbstractReconcileStep; // packageimport |
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18 import org.eclipse.jface.text.reconciler.IReconcilingStrategyExtension; // packageimport |
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19 import org.eclipse.jface.text.reconciler.MonoReconciler; // packageimport |
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20 import org.eclipse.jface.text.reconciler.IReconcileStep; // packageimport |
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21 import org.eclipse.jface.text.reconciler.AbstractReconciler; // packageimport |
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22 import org.eclipse.jface.text.reconciler.Reconciler; // packageimport |
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23 import org.eclipse.jface.text.reconciler.IReconcilableModel; // packageimport |
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24 import org.eclipse.jface.text.reconciler.DirtyRegion; // packageimport |
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25 import org.eclipse.jface.text.reconciler.IReconcileResult; // packageimport |
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26 import org.eclipse.jface.text.reconciler.IReconcilerExtension; // packageimport |
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27 |
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28 |
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29 import java.lang.all; |
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30 import java.util.List; |
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31 import java.util.ArrayList; |
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32 import java.util.Set; |
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33 |
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34 |
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35 import tango.core.sync.Mutex; |
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36 import tango.core.sync.Condition; |
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37 |
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38 /** |
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39 * Queue used by {@link org.eclipse.jface.text.reconciler.AbstractReconciler} to manage |
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40 * dirty regions. When a dirty region is inserted into the queue, the queue tries |
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41 * to fold it into the neighboring dirty region. |
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42 * |
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43 * @see org.eclipse.jface.text.reconciler.AbstractReconciler |
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44 * @see org.eclipse.jface.text.reconciler.DirtyRegion |
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45 */ |
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46 class DirtyRegionQueue : Mutex { |
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47 |
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48 /** The list of dirty regions. */ |
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49 private List fDirtyRegions; |
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50 private Condition cond; |
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51 /** |
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52 * Creates a new empty dirty region. |
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53 */ |
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54 public this() { |
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55 //super(); |
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56 fDirtyRegions= new ArrayList(); |
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57 cond = new Condition(this); |
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58 } |
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59 |
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60 public void wait(){ |
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61 cond.wait(); |
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62 } |
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63 public void wait(int delay){ |
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64 cond.wait(delay/1000.0); |
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65 } |
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66 public void notifyAll(){ |
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67 cond.notifyAll(); |
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68 } |
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69 |
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70 /** |
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71 * Adds a dirty region to the end of the dirty-region queue. |
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72 * |
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73 * @param dr the dirty region to add |
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74 */ |
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75 public void addDirtyRegion(DirtyRegion dr) { |
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76 // If the dirty region being added is directly after the last dirty |
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77 // region on the queue then merge the two dirty regions together. |
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78 DirtyRegion lastDR= getLastDirtyRegion(); |
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79 bool wasMerged= false; |
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80 if (lastDR !is null) |
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81 if (lastDR.getType() is dr.getType()) |
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82 if (lastDR.getType() is DirtyRegion.INSERT) { |
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83 if (lastDR.getOffset() + lastDR.getLength() is dr.getOffset()) { |
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84 lastDR.mergeWith(dr); |
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85 wasMerged= true; |
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86 } |
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87 } else if (lastDR.getType() is DirtyRegion.REMOVE) { |
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88 if (dr.getOffset() + dr.getLength() is lastDR.getOffset()) { |
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89 lastDR.mergeWith(dr); |
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90 wasMerged= true; |
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91 } |
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92 } |
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93 |
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94 if (!wasMerged) |
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95 // Don't merge- just add the new one onto the queue. |
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96 fDirtyRegions.add(dr); |
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97 } |
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98 |
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99 /** |
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100 * Returns the last dirty region that was added to the queue. |
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101 * |
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102 * @return the last DirtyRegion on the queue |
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103 */ |
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104 private DirtyRegion getLastDirtyRegion() { |
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105 int size= fDirtyRegions.size(); |
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106 return (size is 0 ? null : cast(DirtyRegion) fDirtyRegions.get(size - 1)); |
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107 } |
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108 |
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109 /** |
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110 * Returns the number of regions in the queue. |
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111 * |
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112 * @return the dirty-region queue-size |
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113 */ |
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114 public int getSize() { |
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115 return fDirtyRegions.size(); |
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116 } |
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117 |
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118 /** |
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119 * Throws away all entries in the queue. |
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120 */ |
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121 public void purgeQueue() { |
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122 fDirtyRegions.clear(); |
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123 } |
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124 |
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125 /** |
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126 * Removes and returns the first dirty region in the queue |
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127 * |
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128 * @return the next dirty region on the queue |
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129 */ |
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130 public DirtyRegion removeNextDirtyRegion() { |
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131 if (fDirtyRegions.size() is 0) |
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132 return null; |
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133 DirtyRegion dr= cast(DirtyRegion) fDirtyRegions.get(0); |
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134 fDirtyRegions.remove(0); |
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135 return dr; |
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136 } |
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137 } |