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  * 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
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package com.facebook.presto.operator;

Methods for creating and decoding synthetic addresses. A synthetic address is a physical position within an array of Slices. The address is encoded as a long with the high 32 bits containing the index of the slice in the array and the low 32 bits containing an offset with the slice.
public final class SyntheticAddress
    private SyntheticAddress()
    public static long encodeSyntheticAddress(int sliceIndexint sliceOffset)
        return (((longsliceIndex) << 32) | sliceOffset;
    public static int decodeSliceIndex(long sliceAddress)
        return ((int) (sliceAddress >> 32));
    public static int decodePosition(long sliceAddress)
        // low order bits contain the raw offset, so a simple cast here will suffice
        return (intsliceAddress;
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