OverridableMethodCallDuringObjectConstructionInspectionBase.java

/*
 * Copyright 2000-2015 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.siyeh.ig.initialization;

import com.intellij.psi.*;
import com.intellij.psi.util.PsiTreeUtil;
import com.intellij.psi.util.PsiUtil;
import com.siyeh.InspectionGadgetsBundle;
import com.siyeh.ig.BaseInspection;
import com.siyeh.ig.BaseInspectionVisitor;
import com.siyeh.ig.psiutils.MethodCallUtils;
import org.jetbrains.annotations.NotNull;

public class OverridableMethodCallDuringObjectConstructionInspectionBase extends BaseInspection {
  @Override
  @NotNull
  public String getDisplayName() {
    return InspectionGadgetsBundle.message("overridable.method.call.in.constructor.display.name");
  }

  @Override
  @NotNull
  public String buildErrorString(Object... infos) {
    return InspectionGadgetsBundle.message("overridable.method.call.in.constructor.problem.descriptor");
  }

  @Override
  public BaseInspectionVisitor buildVisitor() {
    return new OverridableMethodCallInConstructorVisitor();
  }

  private static class OverridableMethodCallInConstructorVisitor extends BaseInspectionVisitor {

    @Override
    public void visitMethodCallExpression(@NotNull PsiMethodCallExpression expression) {
      super.visitMethodCallExpression(expression);
      if (!MethodCallUtils.isCallDuringObjectConstruction(expression)) {
        return;
      }
      final PsiReferenceExpression methodExpression = expression.getMethodExpression();
      final PsiExpression qualifier = methodExpression.getQualifierExpression();
      if (qualifier != null) {
        if (!(qualifier instanceof PsiThisExpression || qualifier instanceof PsiSuperExpression)) {
          return;
        }
      }
      final PsiClass containingClass = PsiTreeUtil.getParentOfType(expression, PsiClass.class);
      if (containingClass == null || containingClass.hasModifierProperty(PsiModifier.FINAL)) {
        return;
      }
      final PsiMethod calledMethod = expression.resolveMethod();
      if (calledMethod == null || !PsiUtil.canBeOverriden(calledMethod) || calledMethod.hasModifierProperty(PsiModifier.PACKAGE_LOCAL)) {
        return;
      }
      final PsiClass calledMethodClass = calledMethod.getContainingClass();
      if (calledMethodClass == null || !calledMethodClass.equals(containingClass)) {
        return;
      }
      registerMethodCallError(expression, expression);
    }
  }
}