parquet-common/src/main/java/parquet/Ints.java

/**
 * Copyright 2012 Twitter, Inc.
 *
 * 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 parquet;

/**
 * Utilities for working with ints
 *
 * @author Alex Levenson
 */
public final class Ints {
  private Ints() { }

  /**
   * Cast value to a an int, or throw an exception
   * if there is an overflow.
   *
   * @param value a long to be casted to an int
   * @return an int that is == to value
   * @throws IllegalArgumentException if value can't be casted to an int
   */
  public static int checkedCast(long value) {
    int valueI = (int) value;
    if (valueI != value) {
      throw new IllegalArgumentException(String.format("Overflow casting %d to an int", value));
    }
    return valueI;
  }
}