1 | package de.ugoe.cs.swe.bnftools.ui.refactoring.autorenumber;
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2 |
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3 | import org.eclipse.core.resources.IFile;
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4 | import org.eclipse.core.runtime.CoreException;
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5 | import org.eclipse.core.runtime.IProgressMonitor;
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6 | import org.eclipse.core.runtime.OperationCanceledException;
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7 | import org.eclipse.emf.ecore.EObject;
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8 | import org.eclipse.jface.text.BadLocationException;
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9 | import org.eclipse.ltk.core.refactoring.Change;
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10 | import org.eclipse.ltk.core.refactoring.CompositeChange;
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11 | import org.eclipse.ltk.core.refactoring.RefactoringStatus;
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12 | import org.eclipse.ltk.core.refactoring.TextFileChange;
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13 | import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
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14 | import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
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15 | import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
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16 | import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
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17 | import org.eclipse.text.edits.MultiTextEdit;
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18 | import org.eclipse.text.edits.ReplaceEdit;
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19 | import org.eclipse.text.edits.TextEditGroup;
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20 | import org.eclipse.xtext.parsetree.AbstractNode;
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21 | import org.eclipse.xtext.parsetree.CompositeNode;
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22 | import org.eclipse.xtext.parsetree.NodeUtil;
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23 | import org.eclipse.xtext.ui.editor.XtextEditor;
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24 | import org.eclipse.xtext.ui.editor.model.XtextDocument;
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25 |
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26 | import de.ugoe.cs.swe.bnftools.ebnf.BnfEntry;
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27 |
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28 | public class AutoRenumberRefactoringProcessor extends RefactoringProcessor {
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29 | IFile file;
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30 | private CompositeNode rootNode;
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31 | private XtextDocument document;
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32 |
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33 | // ----------------------------------------------------------------------------------------------------
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34 |
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35 | public AutoRenumberRefactoringProcessor(XtextEditor editor, CompositeNode root, XtextDocument doc) {
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36 | file = (IFile) editor.getEditorInput().getAdapter(IFile.class);
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37 | this.rootNode = root;
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38 | this.document = doc;
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39 | }
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40 |
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41 | // ----------------------------------------------------------------------------------------------------
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42 |
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43 | @Override
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44 | public Object[] getElements() {
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45 | return null;
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46 | }
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47 |
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48 | // ----------------------------------------------------------------------------------------------------
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49 |
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50 | @Override
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51 | public String getIdentifier() {
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52 | return "Autorenumbering Processor";
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53 | }
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54 |
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55 | // ----------------------------------------------------------------------------------------------------
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56 |
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57 | @Override
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58 | public String getProcessorName() {
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59 | return "Autorenumbering Processor";
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60 | }
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61 |
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62 | // ----------------------------------------------------------------------------------------------------
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63 |
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64 | @Override
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65 | public boolean isApplicable() throws CoreException {
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66 | return (rootNode != null);
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67 | }
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68 |
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69 | // ----------------------------------------------------------------------------------------------------
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70 |
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71 | @Override
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72 | public RefactoringStatus checkInitialConditions(IProgressMonitor pm)
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73 | throws CoreException, OperationCanceledException {
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74 |
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75 | RefactoringStatus status = new RefactoringStatus();
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76 |
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77 | if (rootNode == null)
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78 | status.addFatalError("Root node is null!");
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79 |
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80 | return status;
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81 | }
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82 |
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83 | // ----------------------------------------------------------------------------------------------------
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84 |
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85 | @Override
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86 | public RefactoringStatus checkFinalConditions(IProgressMonitor pm,
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87 | CheckConditionsContext context) throws CoreException,
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88 | OperationCanceledException {
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89 |
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90 | return checkInitialConditions(pm);
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91 | }
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92 |
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93 | // ----------------------------------------------------------------------------------------------------
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94 |
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95 | @Override
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96 | public Change createChange(IProgressMonitor pm) throws CoreException,
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97 | OperationCanceledException {
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98 | /*
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99 | * Create a change, initialise the IProgressMonitor with 2 task:
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100 | * 1. renaming the reference with the rule's right side
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101 | * 2. renaming the whole rule with an empty string
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102 | */
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103 | CompositeChange compositeChange = new CompositeChange("Autorenumbering");
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104 | pm.beginTask("Autorenumbering Refactoring", 2);
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105 |
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106 | //initialising the edit
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107 | MultiTextEdit multiEdit = new MultiTextEdit();
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108 | TextFileChange fileChange = new TextFileChange("Autorenumbering", file);
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109 | fileChange.setEdit(multiEdit);
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110 | fileChange.setTextType("bnf");
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111 | compositeChange.add(fileChange);
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112 |
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113 | int counter = 1;
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114 | // renumber the rules
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115 | for (int i=0; i < rootNode.getChildren().size(); i++) {
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116 | AbstractNode child = rootNode.getChildren().get(i);
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117 | EObject element = child.getElement();
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118 | if (!(element instanceof BnfEntry))
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119 | continue;
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120 | BnfEntry bnfEntry = (BnfEntry) element;
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121 | if (bnfEntry.getRule() == null)
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122 | continue;
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123 |
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124 | child = NodeUtil.getNodeAdapter(bnfEntry.getRule()).getParserNode();
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125 |
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126 | String ruleText;
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127 | try {
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128 | ruleText = document.get(child.getOffset(), child.getLength());
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129 | int numberSeperatorPosition = ruleText.indexOf(".");
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130 | if (numberSeperatorPosition >= 0) {
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131 | int startOffset = child.getOffset();
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132 | int length = numberSeperatorPosition;
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133 |
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134 | ReplaceEdit replaceEdit = new ReplaceEdit(startOffset, length, Integer.toString(counter));
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135 | multiEdit.addChild(replaceEdit);
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136 | TextEditGroup editGroup2 = new TextEditGroup("renumbering", replaceEdit);
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137 | fileChange.addTextEditGroup(editGroup2);
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138 | pm.worked(1);
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139 | }
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140 | counter++;
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141 | } catch (BadLocationException e) {
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142 | e.printStackTrace();
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143 | }
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144 | }
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145 |
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146 | return compositeChange;
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147 |
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148 | }
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149 |
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150 | // ----------------------------------------------------------------------------------------------------
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151 |
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152 | @Override
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153 | public RefactoringParticipant[] loadParticipants(RefactoringStatus status,
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154 | SharableParticipants sharedParticipants) throws CoreException {
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155 | return null;
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156 | }
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157 |
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158 | } |
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