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11 package org.eclipse.jdt.internal.corext.refactoring.rename;
12
13 import java.util.Collections  ;
14 import java.util.LinkedList ;
15 import java.util.Map ;
16
17 import org.eclipse.core.runtime.Assert;
18
19 import org.eclipse.jdt.core.IField;
20 import org.eclipse.jdt.core.IInitializer;
21 import org.eclipse.jdt.core.IJavaElement;
22 import org.eclipse.jdt.core.IMember;
23 import org.eclipse.jdt.core.IMethod;
24 import org.eclipse.jdt.core.IType;
25 import org.eclipse.jdt.core.Signature;
26
27
28
40 public class RefactoringHandleTransplanter {
41
42 private final IType fOldType;
43 private final IType fNewType;
44 private final Map fRefactoredSimilarElements;
45
46
51 public RefactoringHandleTransplanter(IType oldType, IType newType, Map refactoredSimilarElements) {
52 fOldType= oldType;
53 fNewType= newType;
54 if (refactoredSimilarElements == null)
55 fRefactoredSimilarElements= Collections.EMPTY_MAP;
56 else
57 fRefactoredSimilarElements= refactoredSimilarElements;
58 }
59
60
67 public IMember transplantHandle(IMember handle) {
68
69
72 final LinkedList oldElements= new LinkedList ();
73 addElements(handle, oldElements);
74
75
78 final IMember[] newElements= convertElements((IMember[]) oldElements.toArray(new IMember[0]));
79
80 return newElements[newElements.length - 1];
81 }
82
83 private void addElements(IMember element, LinkedList chain) {
84 chain.addFirst(element);
85 IJavaElement parent= element.getParent();
86 if (parent instanceof IMember)
87 addElements((IMember) parent, chain);
88 }
89
90 private IMember[] convertElements(IMember[] oldElements) {
91
92 final IMember[] newElements= new IMember[oldElements.length];
93 final IMember first= oldElements[0];
94
95 Assert.isTrue(first instanceof IType);
96
97 if (first.equals(fOldType))
98 newElements[0]= fNewType;
100 else
101 newElements[0]= first;
102
103
108
109 for (int i= 1; i < oldElements.length; i++) {
110 final IJavaElement newParent= newElements[i - 1];
111 final IJavaElement currentElement= oldElements[i];
112 switch (newParent.getElementType()) {
113 case IJavaElement.TYPE: {
114 switch (currentElement.getElementType()) {
115 case IJavaElement.TYPE: {
116 final String newName= resolveTypeName((IType) currentElement);
117 newElements[i]= ((IType) newParent).getType(newName);
118 break;
119 }
120 case IJavaElement.METHOD: {
121 final String newName= resolveElementName(currentElement);
122 final String [] newParameterTypes= resolveParameterTypes((IMethod) currentElement);
123 newElements[i]= ((IType) newParent).getMethod(newName, newParameterTypes);
124 break;
125 }
126 case IJavaElement.INITIALIZER: {
127 final IInitializer initializer= (IInitializer) currentElement;
128 newElements[i]= ((IType) newParent).getInitializer(initializer.getOccurrenceCount());
129 break;
130 }
131 case IJavaElement.FIELD: {
132 final String newName= resolveElementName(currentElement);
133 newElements[i]= ((IType) newParent).getField(newName);
134 break;
135 }
136 }
137 break;
138 }
139 case IJavaElement.METHOD: {
140 switch (currentElement.getElementType()) {
141 case IJavaElement.TYPE: {
142 newElements[i]= resolveTypeInMember((IMethod) newParent, (IType) currentElement);
143 break;
144 }
145 }
146 break;
147 }
148 case IJavaElement.INITIALIZER: {
149 switch (currentElement.getElementType()) {
150 case IJavaElement.TYPE: {
151 newElements[i]= resolveTypeInMember((IInitializer) newParent, (IType) currentElement);
152 break;
153 }
154 }
155 break;
156 }
157 case IJavaElement.FIELD: {
158 switch (currentElement.getElementType()) {
159 case IJavaElement.TYPE: {
160 newElements[i]= resolveTypeInMember((IField) newParent, (IType) currentElement);
162 break;
163 }
164 }
165 break;
166 }
167 }
168 }
169 return newElements;
170 }
171
172 private String [] resolveParameterTypes(IMethod method) {
173 final String [] oldParameterTypes= method.getParameterTypes();
174 final String [] newparams= new String [oldParameterTypes.length];
175
176 final String [] possibleOldSigs= new String [4];
177 possibleOldSigs[0]= Signature.createTypeSignature(fOldType.getElementName(), false);
178 possibleOldSigs[1]= Signature.createTypeSignature(fOldType.getElementName(), true);
179 possibleOldSigs[2]= Signature.createTypeSignature(fOldType.getFullyQualifiedName(), false);
180 possibleOldSigs[3]= Signature.createTypeSignature(fOldType.getFullyQualifiedName(), true);
181
182 final String [] possibleNewSigs= new String [4];
183 possibleNewSigs[0]= Signature.createTypeSignature(fNewType.getElementName(), false);
184 possibleNewSigs[1]= Signature.createTypeSignature(fNewType.getElementName(), true);
185 possibleNewSigs[2]= Signature.createTypeSignature(fNewType.getFullyQualifiedName(), false);
186 possibleNewSigs[3]= Signature.createTypeSignature(fNewType.getFullyQualifiedName(), true);
187
188 for (int i= 0; i < oldParameterTypes.length; i++) {
191 newparams[i]= oldParameterTypes[i];
192 for (int j= 0; j < possibleOldSigs.length; j++) {
193 newparams[i]= replaceAll(newparams[i], possibleOldSigs[j], possibleNewSigs[j]);
194 }
195 }
196 return newparams;
197 }
198
199 private String resolveElementName(IJavaElement element) {
200 final String newName= (String ) fRefactoredSimilarElements.get(element);
201 if (newName != null)
202 return newName;
203 else
204 return element.getElementName();
205 }
206
207 private IMember resolveTypeInMember(final IMember newParent, IType oldChild) {
208 String newName= ""; if (oldChild.getElementName().length() != 0)
211 newName= resolveTypeName(oldChild);
212 return newParent.getType(newName, oldChild.getOccurrenceCount());
213 }
214
215 private String resolveTypeName(IType type) {
216 return type.equals(fOldType) ? fNewType.getElementName() : type.getElementName();
217 }
218
219 private static String replaceAll(final String source, final String replaceFrom, final String replaceTo) {
220 final StringBuffer buf= new StringBuffer (source.length());
221 int currentIndex= 0;
222 int matchIndex;
223 while ((matchIndex= source.indexOf(replaceFrom, currentIndex)) != -1) {
224 buf.append(source.substring(currentIndex, matchIndex));
225 buf.append(replaceTo);
226 currentIndex= matchIndex + replaceFrom.length();
227 }
228 buf.append(source.substring(currentIndex));
229 return buf.toString();
230 }
231 }
232 |
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