java/java-impl/src/com/intellij/refactoring/move/moveInstanceMethod/InternalUsageInfo.java

   1 /*
   2  * Copyright 2000-2009 JetBrains s.r.o.
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package com.intellij.refactoring.move.moveInstanceMethod;
  17
  18 import com.intellij.usageView.UsageInfo;
  19 import com.intellij.psi.PsiReferenceExpression;
  20 import com.intellij.psi.PsiElement;
  21 import com.intellij.psi.PsiExpression;
  22 import com.intellij.psi.PsiNewExpression;
  23 import com.intellij.openapi.diagnostic.Logger;
  24
  25 /**
  26  * @author ven
  27  */
  28 public class InternalUsageInfo extends UsageInfo {
  29   private static final Logger LOG = Logger.getInstance("#com.intellij.refactoring.move.moveInstanceMethod.InternalUsageInfo");
  30   public InternalUsageInfo(final PsiElement referenceElement) {
  31     super(referenceElement);
  32     LOG.assertTrue(referenceElement instanceof PsiReferenceExpression || referenceElement instanceof PsiNewExpression);
  33   }
  34
  35   PsiExpression getQualifier () {
  36     PsiElement element = getElement();
  37     if (element instanceof PsiReferenceExpression) {
  38       return ((PsiReferenceExpression)element).getQualifierExpression();
  39     }
  40     else if (element instanceof PsiNewExpression) return ((PsiNewExpression)element).getQualifier();
  41
  42     return null;
  43   }
  44 }