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