java/java-impl/src/com/intellij/refactoring/util/duplicates/ExpressionReturnValue.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.util.duplicates;
  17
  18 import com.intellij.codeInsight.PsiEquivalenceUtil;
  19 import com.intellij.psi.*;
  20 import com.intellij.psi.codeStyle.CodeStyleManager;
  21 import com.intellij.util.IncorrectOperationException;
  22
  23 /**
  24  * @author dsl
  25  */
  26 public class ExpressionReturnValue implements ReturnValue {
  27   private final PsiExpression myExpression;
  28
  29   public ExpressionReturnValue(PsiExpression expression) {
  30     myExpression = expression;
  31   }
  32
  33   public PsiExpression getExpression() {
  34     return myExpression;
  35   }
  36
  37   public boolean isEquivalent(ReturnValue other) {
  38     if (!(other instanceof ExpressionReturnValue)) return false;
  39     return PsiEquivalenceUtil.areElementsEquivalent(myExpression, ((ExpressionReturnValue)other).myExpression);
  40   }
  41
  42   public PsiStatement createReplacement(final PsiMethod extractedMethod, final PsiMethodCallExpression methodCallExpression)
  43     throws IncorrectOperationException {
  44     final PsiElementFactory elementFactory = JavaPsiFacade.getInstance(methodCallExpression.getProject()).getElementFactory();
  45     final CodeStyleManager styleManager = CodeStyleManager.getInstance(methodCallExpression.getProject());
  46     PsiExpressionStatement expressionStatement;
  47     expressionStatement = (PsiExpressionStatement)elementFactory.createStatementFromText("x = y();", null);
  48     expressionStatement = (PsiExpressionStatement)styleManager.reformat(expressionStatement);
  49     final PsiAssignmentExpression assignmentExpression = (PsiAssignmentExpression)expressionStatement.getExpression();
  50     assignmentExpression.getLExpression().replace(getExpression());
  51     assignmentExpression.getRExpression().replace(methodCallExpression);
  52     return expressionStatement;
  53   }
  54 }