1 | package de.ugoe.cs.swe.bnftools.ui.quickfix.processors;
|
---|
2 |
|
---|
3 | import java.util.List;
|
---|
4 |
|
---|
5 | import org.eclipse.core.resources.IFile;
|
---|
6 | import org.eclipse.core.runtime.CoreException;
|
---|
7 | import org.eclipse.core.runtime.IProgressMonitor;
|
---|
8 | import org.eclipse.core.runtime.OperationCanceledException;
|
---|
9 | import org.eclipse.ltk.core.refactoring.Change;
|
---|
10 | import org.eclipse.ltk.core.refactoring.CompositeChange;
|
---|
11 | import org.eclipse.ltk.core.refactoring.RefactoringStatus;
|
---|
12 | import org.eclipse.ltk.core.refactoring.TextFileChange;
|
---|
13 | import org.eclipse.ltk.core.refactoring.participants.CheckConditionsContext;
|
---|
14 | import org.eclipse.ltk.core.refactoring.participants.RefactoringParticipant;
|
---|
15 | import org.eclipse.ltk.core.refactoring.participants.RefactoringProcessor;
|
---|
16 | import org.eclipse.ltk.core.refactoring.participants.SharableParticipants;
|
---|
17 | import org.eclipse.text.edits.DeleteEdit;
|
---|
18 | import org.eclipse.text.edits.MultiTextEdit;
|
---|
19 | import org.eclipse.text.edits.ReplaceEdit;
|
---|
20 | import org.eclipse.text.edits.TextEditGroup;
|
---|
21 | import org.eclipse.xtext.parsetree.CompositeNode;
|
---|
22 | import org.eclipse.xtext.ui.editor.XtextEditor;
|
---|
23 | import org.eclipse.xtext.ui.editor.model.IXtextDocument;
|
---|
24 |
|
---|
25 | import de.ugoe.cs.swe.bnftools.analysis.EbnfAnalysisUtils;
|
---|
26 | import de.ugoe.cs.swe.bnftools.ebnf.Rule;
|
---|
27 | import de.ugoe.cs.swe.bnftools.ebnf.RuleReference;
|
---|
28 | import de.ugoe.cs.swe.bnftools.utils.DeclarationReferencesPair;
|
---|
29 | import de.ugoe.cs.swe.bnftools.utils.Utils;
|
---|
30 |
|
---|
31 | public class ReplacePassthroughRuleProcessor extends RefactoringProcessor {
|
---|
32 | IFile file;
|
---|
33 | private List<DeclarationReferencesPair> nodePairs;
|
---|
34 | private boolean isRemoveLine;
|
---|
35 | private IXtextDocument document;
|
---|
36 |
|
---|
37 | // ----------------------------------------------------------------------------------------------------
|
---|
38 |
|
---|
39 | public ReplacePassthroughRuleProcessor(XtextEditor editor, IXtextDocument doc, List<DeclarationReferencesPair> nodePairs, boolean removal) {
|
---|
40 | file = (IFile) editor.getEditorInput().getAdapter(IFile.class);
|
---|
41 | this.nodePairs = nodePairs;
|
---|
42 | this.isRemoveLine = removal;
|
---|
43 | this.document = doc;
|
---|
44 | }
|
---|
45 |
|
---|
46 | // ----------------------------------------------------------------------------------------------------
|
---|
47 |
|
---|
48 | @Override
|
---|
49 | public Object[] getElements() {
|
---|
50 | return null;
|
---|
51 | }
|
---|
52 |
|
---|
53 | // ----------------------------------------------------------------------------------------------------
|
---|
54 |
|
---|
55 | @Override
|
---|
56 | public String getIdentifier() {
|
---|
57 | return "Replace Passthrough Rule Processor";
|
---|
58 | }
|
---|
59 |
|
---|
60 | // ----------------------------------------------------------------------------------------------------
|
---|
61 |
|
---|
62 | @Override
|
---|
63 | public String getProcessorName() {
|
---|
64 | return "Replace Passthrough Rule Processor";
|
---|
65 | }
|
---|
66 |
|
---|
67 | // ----------------------------------------------------------------------------------------------------
|
---|
68 |
|
---|
69 | @Override
|
---|
70 | public boolean isApplicable() throws CoreException {
|
---|
71 | if ((nodePairs != null) && (nodePairs.size() > 0))
|
---|
72 | return false;
|
---|
73 |
|
---|
74 |
|
---|
75 | return true;
|
---|
76 | }
|
---|
77 |
|
---|
78 | // ----------------------------------------------------------------------------------------------------
|
---|
79 |
|
---|
80 | @Override
|
---|
81 | public RefactoringStatus checkInitialConditions(IProgressMonitor pm)
|
---|
82 | throws CoreException, OperationCanceledException {
|
---|
83 |
|
---|
84 | RefactoringStatus status = new RefactoringStatus();
|
---|
85 |
|
---|
86 | if (nodePairs == null) {
|
---|
87 | status.addFatalError("No passthrough rules to replace!");
|
---|
88 | } else if (nodePairs.size() == 0) {
|
---|
89 | status.addFatalError("No passthrough rules to replace!");
|
---|
90 | }
|
---|
91 |
|
---|
92 | boolean isNodeWithReferences = false;
|
---|
93 | for (int i=0; i < nodePairs.size(); i++) {
|
---|
94 | if (nodePairs.get(i).getReferenceNodes().size() > 0) {
|
---|
95 | isNodeWithReferences = true;
|
---|
96 | }
|
---|
97 | }
|
---|
98 |
|
---|
99 | if (!isNodeWithReferences)
|
---|
100 | status.addFatalError("No passthrough rules to replace!");
|
---|
101 |
|
---|
102 | return status;
|
---|
103 | }
|
---|
104 |
|
---|
105 | // ----------------------------------------------------------------------------------------------------
|
---|
106 |
|
---|
107 | @Override
|
---|
108 | public RefactoringStatus checkFinalConditions(IProgressMonitor pm,
|
---|
109 | CheckConditionsContext context) throws CoreException,
|
---|
110 | OperationCanceledException {
|
---|
111 |
|
---|
112 | return checkInitialConditions(pm);
|
---|
113 | }
|
---|
114 |
|
---|
115 | // ----------------------------------------------------------------------------------------------------
|
---|
116 |
|
---|
117 | @Override
|
---|
118 | public Change createChange(IProgressMonitor pm) throws CoreException,
|
---|
119 | OperationCanceledException {
|
---|
120 | /*
|
---|
121 | * Create a change, initialise the IProgressMonitor with 2 task:
|
---|
122 | * 1. renaming the reference with the rule's right side
|
---|
123 | * 2. renaming the whole rule with an empty string
|
---|
124 | */
|
---|
125 | CompositeChange compositeChange = new CompositeChange("Replace Passthrough Rule");
|
---|
126 | pm.beginTask("Replace Passthrough Rule Refactoring", nodePairs.size());
|
---|
127 |
|
---|
128 | //initialising the edit
|
---|
129 | MultiTextEdit multiEdit = new MultiTextEdit();
|
---|
130 | TextFileChange fileChange = new TextFileChange("Replace Passthrough Rule", file);
|
---|
131 | fileChange.setEdit(multiEdit);
|
---|
132 | fileChange.setTextType("bnf");
|
---|
133 | compositeChange.add(fileChange);
|
---|
134 |
|
---|
135 | for (int i=0; i < nodePairs.size(); i++) {
|
---|
136 | CompositeNode declarationRule = nodePairs.get(i).getDeclarationNode();
|
---|
137 | List<CompositeNode> ruleReferences = nodePairs.get(i).getReferenceNodes();
|
---|
138 | // get the replacement name
|
---|
139 | Rule rule = (Rule) declarationRule.getElement();
|
---|
140 | RuleReference rightSideRule = EbnfAnalysisUtils.getPassthroughRuleReference(rule);
|
---|
141 | String replaceRuleName = rightSideRule.getRuleref().getName();
|
---|
142 |
|
---|
143 | // replace references with passthrough rule name
|
---|
144 | for (int j=0; j < ruleReferences.size(); j++) {
|
---|
145 | CompositeNode ruleReference = ruleReferences.get(j);
|
---|
146 | ReplaceEdit replaceEdit = new ReplaceEdit(ruleReference.getOffset(), ruleReference.getLength(), replaceRuleName);
|
---|
147 | multiEdit.addChild(replaceEdit);
|
---|
148 | TextEditGroup editGroup2 = new TextEditGroup("reference renaming", replaceEdit);
|
---|
149 | fileChange.addTextEditGroup(editGroup2);
|
---|
150 | pm.worked(1);
|
---|
151 | }
|
---|
152 |
|
---|
153 | // remove old line
|
---|
154 | if (isRemoveLine) {
|
---|
155 | int amount = Utils.stepBackNewlines(document, declarationRule.getOffset());
|
---|
156 | DeleteEdit deleteEdit = new DeleteEdit(declarationRule.getOffset() - amount, declarationRule.getLength() + amount);
|
---|
157 | multiEdit.addChild(deleteEdit);
|
---|
158 | TextEditGroup editGroup3 = new TextEditGroup("remove old line", deleteEdit);
|
---|
159 | fileChange.addTextEditGroup(editGroup3);
|
---|
160 | pm.worked(1);
|
---|
161 | }
|
---|
162 | }
|
---|
163 |
|
---|
164 | return compositeChange;
|
---|
165 |
|
---|
166 | }
|
---|
167 |
|
---|
168 | // ----------------------------------------------------------------------------------------------------
|
---|
169 |
|
---|
170 | @Override
|
---|
171 | public RefactoringParticipant[] loadParticipants(RefactoringStatus status,
|
---|
172 | SharableParticipants sharedParticipants) throws CoreException {
|
---|
173 | return null;
|
---|
174 | }
|
---|
175 |
|
---|
176 | // ----------------------------------------------------------------------------------------------------
|
---|
177 |
|
---|
178 |
|
---|
179 | } |
---|