1 | package de.ugoe.cs.swe.bnftools.ui.refactoring.inlinetokenrules;
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2 |
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3 | import java.util.List;
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4 |
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5 | import org.eclipse.core.resources.IFile;
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6 | import org.eclipse.core.runtime.CoreException;
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7 | import org.eclipse.core.runtime.IProgressMonitor;
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8 | import org.eclipse.core.runtime.OperationCanceledException;
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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.CompositeNode;
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21 | import org.eclipse.xtext.ui.editor.XtextEditor;
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22 | import org.eclipse.xtext.ui.editor.model.XtextDocument;
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23 |
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24 | import de.ugoe.cs.swe.bnftools.analysis.EbnfAnalysisUtils;
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25 | import de.ugoe.cs.swe.bnftools.ebnf.Rule;
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26 | import de.ugoe.cs.swe.bnftools.ebnf.StringRule;
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27 | import de.ugoe.cs.swe.bnftools.utils.DeclarationReferencesPair;
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28 |
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29 | public class InlineTokenRulesRefactoringProcessor extends RefactoringProcessor {
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30 | IFile file;
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31 | private CompositeNode rootNode;
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32 | private List<DeclarationReferencesPair> nodePairs;
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33 |
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34 | // ----------------------------------------------------------------------------------------------------
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35 |
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36 | public InlineTokenRulesRefactoringProcessor(XtextEditor editor, CompositeNode root, XtextDocument doc, List<DeclarationReferencesPair> nodePairs) {
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37 | file = (IFile) editor.getEditorInput().getAdapter(IFile.class);
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38 | this.rootNode = root;
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39 | this.nodePairs = nodePairs;
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40 | }
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41 |
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42 | // ----------------------------------------------------------------------------------------------------
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43 |
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44 | @Override
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45 | public Object[] getElements() {
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46 | return null;
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47 | }
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48 |
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49 | // ----------------------------------------------------------------------------------------------------
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50 |
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51 | @Override
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52 | public String getIdentifier() {
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53 | return "Inline Token Rules Processor";
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54 | }
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55 |
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56 | // ----------------------------------------------------------------------------------------------------
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57 |
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58 | @Override
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59 | public String getProcessorName() {
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60 | return "Inline Token Rules Processor";
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61 | }
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62 |
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63 | // ----------------------------------------------------------------------------------------------------
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64 |
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65 | @Override
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66 | public boolean isApplicable() throws CoreException {
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67 | return (rootNode != null);
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68 | }
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69 |
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70 | // ----------------------------------------------------------------------------------------------------
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71 |
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72 | @Override
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73 | public RefactoringStatus checkInitialConditions(IProgressMonitor pm)
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74 | throws CoreException, OperationCanceledException {
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75 |
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76 | RefactoringStatus status = new RefactoringStatus();
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77 |
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78 | if (rootNode == null)
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79 | status.addFatalError("Root node is null!");
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80 |
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81 | return status;
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82 | }
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83 |
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84 | // ----------------------------------------------------------------------------------------------------
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85 |
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86 | @Override
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87 | public RefactoringStatus checkFinalConditions(IProgressMonitor pm,
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88 | CheckConditionsContext context) throws CoreException,
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89 | OperationCanceledException {
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90 |
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91 | return checkInitialConditions(pm);
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92 | }
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93 |
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94 | // ----------------------------------------------------------------------------------------------------
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95 |
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96 | @Override
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97 | public Change createChange(IProgressMonitor pm) throws CoreException,
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98 | OperationCanceledException {
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99 |
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100 | CompositeChange compositeChange = new CompositeChange("Inline Token Rule");
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101 | pm.beginTask("Inline Token Rules Refactoring", 2);
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102 |
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103 | //initialising the edit
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104 | MultiTextEdit multiEdit = new MultiTextEdit();
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105 | TextFileChange fileChange = new TextFileChange("Inline Token Rules", file);
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106 | fileChange.setEdit(multiEdit);
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107 | fileChange.setTextType("bnf");
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108 | compositeChange.add(fileChange);
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109 |
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110 | // Inline Token Rules
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111 | for (int i=0; i < nodePairs.size(); i++) {
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112 | CompositeNode declarationRule = nodePairs.get(i).getDeclarationNode();
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113 | List<CompositeNode> ruleReferences = nodePairs.get(i).getReferenceNodes();
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114 |
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115 | // get the replacement name
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116 | StringRule stringRule = EbnfAnalysisUtils.getTokenRuleTerminal((Rule) declarationRule.getElement());
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117 | String replaceString = "";
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118 | if (stringRule.getLiteral().length() > 0) {
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119 | replaceString = "\"" + stringRule.getLiteral() + "\"";
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120 | } else {
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121 | replaceString = "\"\"\"";
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122 | }
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123 |
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124 | // replace references with passthrough rule name
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125 | for (int j=0; j < ruleReferences.size(); j++) {
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126 | CompositeNode ruleReference = ruleReferences.get(j);
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127 | ReplaceEdit replaceEdit2 = new ReplaceEdit(ruleReference.getOffset(), ruleReference.getLength(), replaceString);
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128 | multiEdit.addChild(replaceEdit2);
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129 | TextEditGroup editGroup2 = new TextEditGroup("reference renaming", replaceEdit2);
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130 | fileChange.addTextEditGroup(editGroup2);
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131 | pm.worked(1);
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132 | }
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133 | }
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134 |
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135 | return compositeChange;
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136 |
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137 | }
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138 |
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139 | // ----------------------------------------------------------------------------------------------------
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140 |
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141 | @Override
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142 | public RefactoringParticipant[] loadParticipants(RefactoringStatus status,
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143 | SharableParticipants sharedParticipants) throws CoreException {
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144 | return null;
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145 | }
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146 |
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147 | } |
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