RedundantInstanceofFix.java

/*
 * Copyright 2000-2017 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.codeInspection.dataFlow.fix;

import com.intellij.codeInspection.InspectionsBundle;
import com.intellij.codeInspection.LocalQuickFix;
import com.intellij.codeInspection.ProblemDescriptor;
import com.intellij.openapi.project.Project;
import com.intellij.psi.JavaPsiFacade;
import com.intellij.psi.PsiElement;
import com.intellij.psi.PsiExpression;
import com.intellij.psi.PsiInstanceOfExpression;
import org.jetbrains.annotations.NotNull;

/**
 * @author peter
 */
public class RedundantInstanceofFix implements LocalQuickFix {
  @Override
  @NotNull
  public String getFamilyName() {
    return InspectionsBundle.message("inspection.data.flow.redundant.instanceof.quickfix");
  }

  @Override
  public void applyFix(@NotNull Project project, @NotNull ProblemDescriptor descriptor) {
    final PsiElement psiElement = descriptor.getPsiElement();
    if (psiElement instanceof PsiInstanceOfExpression) {
      PsiExpression compareToNull = JavaPsiFacade.getInstance(psiElement.getProject()).getElementFactory().
        createExpressionFromText(((PsiInstanceOfExpression)psiElement).getOperand().getText() + " != null", psiElement.getParent());
      psiElement.replace(compareToNull);
    }
  }
}