code: ///////////////////////////////////////////////////////////////////////////////////////////////
  // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
  // Copyright (C) 2001-2023 the original author or authors.
  //
  // This library is free software; you can redistribute it and/or
  // modify it under the terms of the GNU Lesser General Public
  // License as published by the Free Software Foundation; either
  // version 2.1 of the License, or (at your option) any later version.
  //
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.checks.coding;
  
  import com.puppycrawl.tools.checkstyle.StatelessCheck;
  import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
  import com.puppycrawl.tools.checkstyle.api.DetailAST;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  
  /**
   * <p>
   * Detects inline conditionals. Here is one example of an inline conditional:
   * </p>
   * <pre>
   * String a = getParameter("a");
   * String b = (a==null || a.length()&lt;1) ? null : a.substring(1);
   * </pre>
   * <p>
   * Rationale: Some developers find inline conditionals hard to read, so
   * their employer's coding standards forbid them.
   * </p>
   * <p>
   * To configure the check:
   * </p>
   * <pre>
   * &lt;module name=&quot;AvoidInlineConditionals&quot;/&gt;
   * </pre>
   * <p>Example:</p>
   * <pre>
   * int x = 5;
   * boolean foobar = (x == 5); // OK
   *
   * String text;
   * text = (text == null) ? "" : text; // violation
   *
   * String b;
   * if (a != null &amp;&amp; a.length() &gt;= 1) { // OK
   *   b = a.substring(1);
   * } else {
   *   b = null;
   * }
   *
   * b = (a != null &amp;&amp; a.length() &gt;= 1) ? a.substring(1) : null; // violation
   * </pre>
   * <p>
   * Parent is {@code com.puppycrawl.tools.checkstyle.TreeWalker}
   * </p>
   * <p>
   * Violation Message Keys:
   * </p>
   * <ul>
   * <li>
   * {@code inline.conditional.avoid}
   * </li>
   * </ul>
   *
   * @since 3.1
   */
  @StatelessCheck
  public class AvoidInlineConditionalsCheck extends AbstractCheck {
  
      /**
       * A key is pointing to the warning message text in "messages.properties"
       * file.
       */
      public static final String MSG_KEY = "inline.conditional.avoid";
  
      @Override
      public int[] getDefaultTokens() {
          return getRequiredTokens();
      }
  
      @Override
      public int[] getRequiredTokens() {
          return new int[] {TokenTypes.QUESTION};
      }
  
      @Override
      public int[] getAcceptableTokens() {
          return getRequiredTokens();
      }
  
      @Override
      public void visitToken(DetailAST ast) {
          // the only place a QUESTION token can occur is in inline conditionals
          // so no need to do any further tricks here - pretty trivial Check!
  
          log(ast, MSG_KEY);
      }
  
  }
  