| /* |
| * 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.classRefs; |
| |
| import com.intellij.psi.*; |
| |
| /** |
| * @author dsl |
| */ |
| public abstract class ClassReferenceScanner { |
| protected PsiClass myClass; |
| private PsiReference[] myReferences = null; |
| |
| public abstract PsiReference[] findReferences(); |
| |
| public ClassReferenceScanner(PsiClass aClass) { |
| myClass = aClass; |
| } |
| |
| public void processReferences(ClassReferenceVisitor visitor) { |
| if(myReferences == null) { |
| myReferences = findReferences(); |
| } |
| |
| for (int i = 0; i < myReferences.length; i++) { |
| processUsage(myReferences[i].getElement(), visitor); |
| } |
| } |
| |
| private void processUsage(PsiElement ref, ClassReferenceVisitor visitor) { |
| if (ref instanceof PsiReferenceExpression){ |
| visitor.visitReferenceExpression((PsiReferenceExpression) ref); |
| return; |
| } |
| |
| PsiElement parent = ref.getParent(); |
| if (parent instanceof PsiTypeElement){ |
| PsiElement pparent = parent.getParent(); |
| while(pparent instanceof PsiTypeElement){ |
| parent = pparent; |
| pparent = parent.getParent(); |
| } |
| ClassReferenceVisitor.TypeOccurence occurence = |
| new ClassReferenceVisitor.TypeOccurence(ref, ((PsiTypeElement) parent).getType()); |
| |
| |
| if (pparent instanceof PsiLocalVariable){ |
| visitor.visitLocalVariableDeclaration((PsiLocalVariable) pparent, occurence); |
| } |
| else if(pparent instanceof PsiParameter) { |
| PsiParameter parameter = (PsiParameter) pparent; |
| visitor.visitParameterDeclaration(parameter, occurence); |
| } |
| else if(pparent instanceof PsiField) { |
| visitor.visitFieldDeclaration((PsiField) pparent, occurence); |
| } |
| else if (pparent instanceof PsiMethod){ |
| visitor.visitMethodReturnType((PsiMethod) pparent, occurence); |
| } |
| else if (pparent instanceof PsiTypeCastExpression){ |
| visitor.visitTypeCastExpression((PsiTypeCastExpression) pparent, occurence); |
| } |
| } |
| else if (parent instanceof PsiNewExpression){ |
| visitor.visitNewExpression((PsiNewExpression) parent, |
| new ClassReferenceVisitor.TypeOccurence(ref, ((PsiNewExpression) parent).getType()) |
| ); |
| } |
| else{ |
| visitor.visitOther(ref); |
| } |
| } |
| } |