content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You 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 org.apache.arrow.vector.complex;
  
  import java.util.Arrays;
  
  /** Utility methods for state machines based on enums. */
  public class StateTool {
    private StateTool() {}
  
    static final org.slf4j.Logger logger = org.slf4j.LoggerFactory.getLogger(StateTool.class);
  
    /**
     * Verifies <code>currentState</code> is in one of <code>expectedStates</code>, throws an
     * IllegalArgumentException if it isn't.
     */
    public static <T extends Enum<?>> void check(T currentState, T... expectedStates) {
      for (T s : expectedStates) {
        if (s == currentState) {
          return;
        }
      }
      throw new IllegalArgumentException(
          String.format(
              "Expected to be in one of these states %s but was actually in " + "state %s",
              Arrays.toString(expectedStates), currentState));
    }
  }
  