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.flowcontrol;
  
  import com.alibaba.p3c.pmd.lang.AbstractXpathRule;
  import com.alibaba.p3c.pmd.lang.java.util.ViolationUtils;
  
  import net.sourceforge.pmd.lang.ast.Node;
  
  /**
   * [Mandatory] Do not use complicated statements in conditional statements (except for frequently used methods
   * like getXxx/isXxx). Use boolean variables to store results of complicated statements temporarily will increase
   * the code's readability.
   *
   * @author zenghou.fw
   * @date 2017/04/11
   */
  public class AvoidComplexConditionRule extends AbstractXpathRule {
      private static final String XPATH = "(//IfStatement/Expression"
          + "|//ConditionalExpression[@Ternary = 'true']/PrimaryExpression)"
          + "[count(.//ConditionalAndExpression) + count(.//ConditionalOrExpression) > 1]";
  
      public AvoidComplexConditionRule() {
          setXPath(XPATH);
      }
  
      @Override
      public void addViolation(Object data, Node node, String arg) {
          ViolationUtils.addViolationWithPrecisePosition(this, node, data,
              "java.flowcontrol.AvoidComplexConditionRule.violation.msg");
      }
  }
  