plugins/InspectionGadgets/src/com/siyeh/ig/fixes/MakeInitializerExplicitFix.java

   1 /*
   2  * Copyright 2003-2005 Dave Griffith
   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.siyeh.ig.fixes;
  17
  18 import com.intellij.codeInspection.ProblemDescriptor;
  19 import com.intellij.openapi.project.Project;
  20 import com.intellij.psi.*;
  21 import com.intellij.util.IncorrectOperationException;
  22 import com.siyeh.InspectionGadgetsBundle;
  23 import com.siyeh.ig.InspectionGadgetsFix;
  24 import org.jetbrains.annotations.NonNls;
  25 import org.jetbrains.annotations.NotNull;
  26
  27 public class MakeInitializerExplicitFix extends InspectionGadgetsFix{
  28
  29     @NotNull
  30     public String getName(){
  31         return InspectionGadgetsBundle.message(
  32                 "make.initialization.explicit.quickfix");
  33     }
  34
  35     public void doFix(Project project, ProblemDescriptor descriptor)
  36             throws IncorrectOperationException{
  37         final PsiElement fieldName = descriptor.getPsiElement();
  38         final PsiField field = (PsiField) fieldName.getParent();
  39         if (field == null) {
  40             return;
  41         }
  42         if (field.getInitializer() != null) {
  43             return;
  44         }
  45         final PsiType type = field.getType();
  46         final PsiManager psiManager = PsiManager.getInstance(project);
  47       final PsiElementFactory factory = JavaPsiFacade.getInstance(psiManager.getProject()).getElementFactory();
  48         final PsiExpression initializer =
  49                 factory.createExpressionFromText(getDefaultValue(type), field);
  50         field.setInitializer(initializer);
  51     }
  52
  53     @NonNls private static String getDefaultValue(PsiType type){
  54         if(PsiType.INT.equals(type)){
  55             return "0";
  56         } else if(PsiType.LONG.equals(type)){
  57             return "0L";
  58         } else if(PsiType.DOUBLE.equals(type)){
  59             return "0.0";
  60         } else if(PsiType.FLOAT.equals(type)){
  61             return "0.0F";
  62         } else if(PsiType.SHORT.equals(type)){
  63             return "(short)0";
  64         } else if(PsiType.BYTE.equals(type)){
  65             return "(byte)0";
  66         } else if(PsiType.BOOLEAN.equals(type)){
  67           return PsiKeyword.FALSE;
  68         } else if(PsiType.CHAR.equals(type)){
  69             return "(char)0";
  70         }
  71         return PsiKeyword.NULL;
  72     }
  73 }