[5] | 1 | package de.ugoe.cs.swe.bnftools.ui.quickfix.processors;
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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.jface.text.BadLocationException;
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| 10 | import org.eclipse.ltk.core.refactoring.Change;
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| 11 | import org.eclipse.ltk.core.refactoring.CompositeChange;
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| 12 | import org.eclipse.ltk.core.refactoring.RefactoringStatus;
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| 13 | import org.eclipse.ltk.core.refactoring.TextFileChange;
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| 14 | import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
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| 15 | import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
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| 16 | import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
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| 17 | import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
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| 18 | import org.eclipse.text.edits.DeleteEdit;
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| 19 | import org.eclipse.text.edits.MultiTextEdit;
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| 20 | import org.eclipse.text.edits.ReplaceEdit;
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| 21 | import org.eclipse.text.edits.TextEditGroup;
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| 22 | import org.eclipse.xtext.parsetree.CompositeNode;
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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.utils.DeclarationReferencesPair;
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| 27 | import de.ugoe.cs.swe.bnftools.utils.Utils;
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| 28 |
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| 29 | public class InlineRulesProcessor extends RefactoringProcessor {
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| 30 |
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| 31 | private IFile file;
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| 32 | private CompositeNode rootNode;
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| 33 | private XtextDocument document;
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| 34 | private List<DeclarationReferencesPair> nodePairs;
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| 35 | private boolean isRemoveLine;
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| 36 |
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| 37 | // ----------------------------------------------------------------------------------------------------
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| 38 |
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| 39 | public InlineRulesProcessor(XtextEditor editor, CompositeNode root, XtextDocument doc, List<DeclarationReferencesPair> nodePairs, boolean removal) {
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| 40 | file = (IFile) editor.getEditorInput().getAdapter(IFile.class);
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| 41 | this.rootNode = root;
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| 42 | this.document = doc;
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| 43 | this.nodePairs = nodePairs;
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| 44 | this.isRemoveLine = removal;
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| 45 |
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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 Object[] getElements() {
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| 52 | return null;
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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 getIdentifier() {
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| 59 | return "Inline Rules 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 String getProcessorName() {
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| 66 | return "Inline Rules Processor";
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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 boolean isApplicable() throws CoreException {
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| 73 | return (rootNode != null);
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| 74 | }
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| 75 |
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| 76 | // ----------------------------------------------------------------------------------------------------
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| 77 |
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| 78 | @Override
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| 79 | public RefactoringStatus checkInitialConditions(IProgressMonitor pm)
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| 80 | throws CoreException, OperationCanceledException {
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| 81 | RefactoringStatus status = new RefactoringStatus();
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| 82 |
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| 83 | if (rootNode == null)
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| 84 | status.addFatalError("Root node is null!");
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| 85 |
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| 86 | return status;
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| 87 | }
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| 88 |
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| 89 | // ----------------------------------------------------------------------------------------------------
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| 90 |
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| 91 | @Override
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| 92 | public RefactoringStatus checkFinalConditions(IProgressMonitor pm,
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| 93 | CheckConditionsContext context) throws CoreException,
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| 94 | OperationCanceledException {
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| 95 |
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| 96 | return checkInitialConditions(pm);
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| 97 | }
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| 98 |
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| 99 | // ----------------------------------------------------------------------------------------------------
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| 100 |
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| 101 | @Override
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| 102 | public Change createChange(IProgressMonitor pm) throws CoreException,
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| 103 | OperationCanceledException {
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| 104 |
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| 105 | CompositeChange compositeChange = new CompositeChange("Inline Rule");
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| 106 | pm.beginTask("Inline Rules Refactoring", 2);
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| 107 |
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| 108 |
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| 109 | //initialising the edit
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| 110 | MultiTextEdit multiEdit = new MultiTextEdit();
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| 111 | TextFileChange fileChange = new TextFileChange("Inline Rules", file);
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| 112 | fileChange.setEdit(multiEdit);
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| 113 | fileChange.setTextType("bnf");
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| 114 | compositeChange.add(fileChange);
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| 115 |
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| 116 | // inline Rules
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| 117 | for (int i=0; i < nodePairs.size(); i++) {
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| 118 | CompositeNode declarationRule = nodePairs.get(i).getDeclarationNode();
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| 119 | List<CompositeNode> ruleReferences = nodePairs.get(i).getReferenceNodes();
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| 120 |
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| 121 | try {
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| 122 | String ruleText = document.get(declarationRule.getOffset(), declarationRule.getLength());
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| 123 | String ruleRightHandSide = ruleText.substring(ruleText.indexOf("::=")+3).trim();
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| 124 | if (ruleRightHandSide.length() == 0)
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| 125 | return compositeChange;
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| 126 |
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| 127 | ruleRightHandSide = "(" + ruleRightHandSide + ")";
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| 128 | //TODO: handle the parentheses more intelligently!
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| 129 |
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| 130 | // replace references with passthrough rule name
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| 131 | for (int j=0; j < ruleReferences.size(); j++) {
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| 132 | CompositeNode ruleReference = ruleReferences.get(j);
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| 133 | ReplaceEdit replaceEdit2 = new ReplaceEdit(ruleReference.getOffset(), ruleReference.getLength(), ruleRightHandSide);
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| 134 | multiEdit.addChild(replaceEdit2);
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| 135 | TextEditGroup editGroup2 = new TextEditGroup("reference renaming", replaceEdit2);
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| 136 | fileChange.addTextEditGroup(editGroup2);
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| 137 | pm.worked(1);
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| 138 | }
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| 139 |
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| 140 | // remove old line
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| 141 | if (isRemoveLine) {
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| 142 | int amount = Utils.stepBackNewlines(document, declarationRule.getOffset());
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| 143 | DeleteEdit deleteEdit = new DeleteEdit(declarationRule.getOffset() - amount, declarationRule.getLength() + amount);
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| 144 | multiEdit.addChild(deleteEdit);
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| 145 | TextEditGroup editGroup3 = new TextEditGroup("remove old line", deleteEdit);
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| 146 | fileChange.addTextEditGroup(editGroup3);
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| 147 | pm.worked(1);
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| 148 | }
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| 149 | } catch (BadLocationException e) {
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| 150 | // TODO Auto-generated catch block
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| 151 | e.printStackTrace();
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| 152 | }
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| 153 |
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| 154 | }
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| 155 |
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| 156 | return compositeChange;
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| 157 |
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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 | @Override
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| 163 | public RefactoringParticipant[] loadParticipants(RefactoringStatus status,
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| 164 | SharableParticipants sharedParticipants) throws CoreException {
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| 165 | return null;
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| 166 | }
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| 167 |
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| 168 | } |
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