code: /*
   * 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.datasketches.memory.internal;
  
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_BOOLEAN_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_BOOLEAN_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_BYTE_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_BYTE_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_CHAR_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_CHAR_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_DOUBLE_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_DOUBLE_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_FLOAT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_FLOAT_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_INT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_INT_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_LONG_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_LONG_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_OBJECT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_OBJECT_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_SHORT_BASE_OFFSET;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.ARRAY_SHORT_INDEX_SCALE;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.BOOLEAN_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.BYTE_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.CHAR_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.DOUBLE_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.FLOAT_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.INT_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.LONG_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.OBJECT_SHIFT;
  import static org.apache.datasketches.memory.internal.UnsafeUtil.SHORT_SHIFT;
  
  /**
   * Creates easy to access association between the major Unsafe constants.
   *
   * @author Lee Rhodes
   */
  public enum Prim {
    BOOLEAN(ARRAY_BOOLEAN_BASE_OFFSET, ARRAY_BOOLEAN_INDEX_SCALE, BOOLEAN_SHIFT),
    BYTE(ARRAY_BYTE_BASE_OFFSET, ARRAY_BYTE_INDEX_SCALE, BYTE_SHIFT),
    CHAR(ARRAY_CHAR_BASE_OFFSET, ARRAY_CHAR_INDEX_SCALE, CHAR_SHIFT),
    SHORT(ARRAY_SHORT_BASE_OFFSET, ARRAY_SHORT_INDEX_SCALE, SHORT_SHIFT),
    INT(ARRAY_INT_BASE_OFFSET, ARRAY_INT_INDEX_SCALE, INT_SHIFT),
    LONG(ARRAY_LONG_BASE_OFFSET, ARRAY_LONG_INDEX_SCALE, LONG_SHIFT),
    FLOAT(ARRAY_FLOAT_BASE_OFFSET, ARRAY_FLOAT_INDEX_SCALE, FLOAT_SHIFT),
    DOUBLE(ARRAY_DOUBLE_BASE_OFFSET, ARRAY_DOUBLE_INDEX_SCALE, DOUBLE_SHIFT),
    OBJECT(ARRAY_OBJECT_BASE_OFFSET, ARRAY_OBJECT_INDEX_SCALE, OBJECT_SHIFT);
  
    private final long arrBaseOff_;
    private final long arrIdxScale_;
    private final long sizeShift_;
  
    private Prim(final long arrBaseOff, final long arrIdxScale, final long sizeShift) {
      this.arrBaseOff_ = arrBaseOff;
      this.arrIdxScale_ = arrIdxScale;
      this.sizeShift_ = sizeShift;
    }
  
    public long off() {
      return arrBaseOff_;
    }
  
    public long scale() {
      return arrIdxScale_;
    }
  
    public long shift() {
      return sizeShift_;
    }
  
  }
  