| /* |
| * Copyright 2000-2011 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.jetbrains.plugins.groovy.refactoring.introduce.parameter; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.psi.*; |
| import com.intellij.psi.codeStyle.CodeStyleManager; |
| import com.intellij.psi.search.LocalSearchScope; |
| import com.intellij.psi.search.searches.ReferencesSearch; |
| import com.intellij.psi.util.InheritanceUtil; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.intellij.util.IncorrectOperationException; |
| import org.jetbrains.annotations.Nullable; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElement; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyPsiElementFactory; |
| import org.jetbrains.plugins.groovy.lang.psi.GroovyRecursiveElementVisitor; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.blocks.GrCodeBlock; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrExpression; |
| import org.jetbrains.plugins.groovy.lang.psi.api.statements.expressions.GrReferenceExpression; |
| import org.jetbrains.plugins.groovy.lang.resolve.ResolveUtil; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * @author Maxim.Medvedev |
| */ |
| public class FieldConflictsResolver { |
| private static final Logger LOG = |
| Logger.getInstance("#org.jetbrains.plugins.groovy.refactoring.introduce.parameter.FieldConflictsResolver"); |
| private final GrCodeBlock myScope; |
| private PsiField myField = null; |
| private List<GrReferenceExpression> myReferenceExpressions = null; |
| private PsiClass myQualifyingClass; |
| |
| public FieldConflictsResolver(String name, GrCodeBlock scope) { |
| myScope = scope; |
| if (myScope == null) return; |
| |
| final GroovyPsiElement resolved = ResolveUtil.resolveProperty(myScope, name); |
| if (resolved instanceof GrReferenceExpression || resolved == null) return; |
| |
| assert resolved instanceof PsiVariable; |
| final PsiVariable oldVariable = (PsiVariable)resolved; |
| myField = oldVariable instanceof PsiField ? (PsiField) oldVariable : null; |
| if (!(oldVariable instanceof PsiField)) return; |
| |
| myReferenceExpressions = new ArrayList<GrReferenceExpression>(); |
| for (PsiReference reference : ReferencesSearch.search(myField, new LocalSearchScope(myScope), false)) { |
| final PsiElement element = reference.getElement(); |
| if (element instanceof GrReferenceExpression) { |
| final GrReferenceExpression referenceExpression = (GrReferenceExpression)element; |
| if (referenceExpression.getQualifier() == null) { |
| myReferenceExpressions.add(referenceExpression); |
| } |
| } |
| } |
| if (myField.hasModifierProperty(PsiModifier.STATIC)) { |
| myQualifyingClass = myField.getContainingClass(); |
| } |
| } |
| |
| public GrExpression fixInitializer(GrExpression initializer) { |
| if (myField == null) return initializer; |
| final GrReferenceExpression[] replacedRef = {null}; |
| initializer.accept(new GroovyRecursiveElementVisitor() { |
| @Override |
| public void visitReferenceExpression(GrReferenceExpression expression) { |
| final GrExpression qualifierExpression = expression.getQualifier(); |
| if (qualifierExpression != null) { |
| qualifierExpression.accept(this); |
| } |
| else { |
| final PsiElement result = expression.resolve(); |
| if (expression.getManager().areElementsEquivalent(result, myField)) { |
| try { |
| replacedRef[0] = qualifyReference(expression, myField, myQualifyingClass); |
| } |
| catch (IncorrectOperationException e) { |
| LOG.error(e); |
| } |
| } |
| } |
| } |
| }); |
| if (!initializer.isValid()) return replacedRef[0]; |
| return initializer; |
| } |
| |
| public void fix() throws IncorrectOperationException { |
| if (myField == null) return; |
| final PsiManager manager = myScope.getManager(); |
| for (GrReferenceExpression referenceExpression : myReferenceExpressions) { |
| if (!referenceExpression.isValid()) continue; |
| final PsiElement newlyResolved = referenceExpression.resolve(); |
| if (!manager.areElementsEquivalent(newlyResolved, myField)) { |
| qualifyReference(referenceExpression, myField, myQualifyingClass); |
| } |
| } |
| } |
| |
| |
| public static GrReferenceExpression qualifyReference(GrReferenceExpression referenceExpression, |
| final PsiMember member, |
| @Nullable final PsiClass qualifyingClass) throws IncorrectOperationException { |
| PsiManager manager = referenceExpression.getManager(); |
| GrReferenceExpression expressionFromText; |
| final GroovyPsiElementFactory factory = GroovyPsiElementFactory.getInstance(referenceExpression.getProject()); |
| if (qualifyingClass == null) { |
| PsiClass parentClass = PsiTreeUtil.getParentOfType(referenceExpression, PsiClass.class); |
| final PsiClass containingClass = member.getContainingClass(); |
| if (parentClass != null && !InheritanceUtil.isInheritorOrSelf(parentClass, containingClass, true)) { |
| while (parentClass != null && !InheritanceUtil.isInheritorOrSelf(parentClass, containingClass, true)) { |
| parentClass = PsiTreeUtil.getParentOfType(parentClass, PsiClass.class, true); |
| } |
| LOG.assertTrue(parentClass != null); |
| expressionFromText = factory.createReferenceExpressionFromText("A.this." + member.getName()); |
| //noinspection ConstantConditions |
| ((GrReferenceExpression)expressionFromText.getQualifier()).getQualifier().replace(factory.createReferenceElementForClass(parentClass)); |
| } |
| else { |
| expressionFromText = (GrReferenceExpression)factory.createExpressionFromText("this." + member.getName()); |
| } |
| } |
| else { |
| expressionFromText = (GrReferenceExpression)factory.createExpressionFromText("A." + member.getName()); |
| expressionFromText.setQualifier(factory.createReferenceElementForClass(qualifyingClass)); |
| } |
| CodeStyleManager codeStyleManager = CodeStyleManager.getInstance(manager.getProject()); |
| expressionFromText = (GrReferenceExpression)codeStyleManager.reformat(expressionFromText); |
| return (GrReferenceExpression)referenceExpression.replace(expressionFromText); |
| } |
| } |