| /* |
| * Copyright 2000-2009 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 com.intellij.refactoring.util.classMembers; |
| |
| import com.intellij.psi.*; |
| import com.intellij.psi.util.PsiUtil; |
| |
| /** |
| * @author dsl |
| */ |
| public class ElementNeedsThis extends ClassThisReferencesVisitor { |
| private boolean myResult = false; |
| private final PsiElement myMember; |
| |
| public ElementNeedsThis(PsiClass aClass, PsiElement member) { |
| super(aClass); |
| myMember = member; |
| } |
| |
| public ElementNeedsThis(PsiClass aClass) { |
| super(aClass); |
| myMember = null; |
| } |
| public boolean usesMembers() { |
| return myResult; |
| } |
| |
| protected void visitClassMemberReferenceElement(PsiMember classMember, PsiJavaCodeReferenceElement classMemberReference) { |
| if (classMember == null || classMember.equals(myMember)) return; |
| if (classMember.hasModifierProperty(PsiModifier.STATIC)) return; |
| |
| if (ignoreUsedTypeParams() && classMember instanceof PsiTypeParameter) return; |
| myResult = true; |
| } |
| |
| protected boolean ignoreUsedTypeParams() { |
| return myMember != null; |
| } |
| |
| protected void visitExplicitThis(PsiClass referencedClass, PsiThisExpression reference) { |
| myResult = true; |
| } |
| |
| protected void visitExplicitSuper(PsiClass referencedClass, PsiSuperExpression reference) { |
| myResult = true; |
| } |
| |
| @Override |
| public void visitReferenceExpression(PsiReferenceExpression expression) { |
| super.visitReferenceExpression(expression); |
| final PsiClass aClass = PsiUtil.resolveClassInType(expression.getType()); |
| if (aClass instanceof PsiTypeParameter) { |
| final PsiTypeParameterListOwner owner = ((PsiTypeParameter)aClass).getOwner(); |
| if (owner instanceof PsiClass && myClassSuperClasses.contains(owner)) { |
| myResult = true; |
| } |
| } |
| } |
| |
| @Override public void visitElement(PsiElement element) { |
| if (myResult) return; |
| super.visitElement(element); |
| } |
| } |