content: /*
   * Copyright 1999-2017 Alibaba Group.
   *
   * 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.alibaba.p3c.pmd.lang.java.rule.set;
  
  import java.util.List;
  
  import com.alibaba.p3c.pmd.lang.java.rule.AbstractAliRule;
  
  import net.sourceforge.pmd.lang.ast.Node;
  import net.sourceforge.pmd.lang.java.ast.ASTClassOrInterfaceDeclaration;
  import net.sourceforge.pmd.lang.java.ast.ASTName;
  import org.jaxen.JaxenException;
  
  /**
   * [Mandatory] Do not cast subList in class ArrayList, otherwise ClassCastException will be
   * thrown：java.util.RandomAccessSubList
   * cannot be cast to java.util.ArrayList ;
   *
   * @author shengfang.gsf
   * @date 2016/12/13
   */
  public class ClassCastExceptionWithSubListToArrayListRule extends AbstractAliRule {
  
      private static final String XPATH =
          "//CastExpression[Type/ReferenceType/ClassOrInterfaceType[@Image = "
              + "\"ArrayList\"]]/PrimaryExpression/PrimaryPrefix/Name[ends-with(@Image,'.subList')]";
  
      @Override
      public Object visit(ASTClassOrInterfaceDeclaration node, Object data) {
          if (node.isInterface()) {
              return data;
          }
          try {
              List<Node> nodes = node.findChildNodesWithXPath(XPATH);
              for (Node item : nodes) {
                  if (!(item instanceof ASTName)) {
                      continue;
                  }
                  addViolationWithMessage(data, item,
                      "java.set.ClassCastExceptionWithSubListToArrayListRule.violation.msg",
                      new Object[] {item.getImage()});
              }
          } catch (JaxenException e) {
              e.printStackTrace();
          }
          return super.visit(node, data);
      }
  }
  