| // This file has been automatically generated, DO NOT EDIT |
| |
| /* |
| * 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.lucene.util.packed; |
| |
| import org.apache.lucene.store.DataInput; |
| import org.apache.lucene.util.RamUsageEstimator; |
| |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| /** |
| * Packs integers into 3 bytes (24 bits per value). |
| * @lucene.internal |
| */ |
| final class Packed8ThreeBlocks extends PackedInts.MutableImpl { |
| final byte[] blocks; |
| |
| public static final int MAX_SIZE = Integer.MAX_VALUE / 3; |
| |
| Packed8ThreeBlocks(int valueCount) { |
| super(valueCount, 24); |
| if (valueCount > MAX_SIZE) { |
| throw new ArrayIndexOutOfBoundsException("MAX_SIZE exceeded"); |
| } |
| blocks = new byte[valueCount * 3]; |
| } |
| |
| Packed8ThreeBlocks(int packedIntsVersion, DataInput in, int valueCount) throws IOException { |
| this(valueCount); |
| in.readBytes(blocks, 0, 3 * valueCount); |
| } |
| |
| @Override |
| public long get(int index) { |
| final int o = index * 3; |
| return (blocks[o] & 0xFFL) << 16 | (blocks[o+1] & 0xFFL) << 8 | (blocks[o+2] & 0xFFL); |
| } |
| |
| @Override |
| public int get(int index, long[] arr, int off, int len) { |
| assert len > 0 : "len must be > 0 (got " + len + ")"; |
| assert index >= 0 && index < valueCount; |
| assert off + len <= arr.length; |
| |
| final int gets = Math.min(valueCount - index, len); |
| for (int i = index * 3, end = (index + gets) * 3; i < end; i+=3) { |
| arr[off++] = (blocks[i] & 0xFFL) << 16 | (blocks[i+1] & 0xFFL) << 8 | (blocks[i+2] & 0xFFL); |
| } |
| return gets; |
| } |
| |
| @Override |
| public void set(int index, long value) { |
| final int o = index * 3; |
| blocks[o] = (byte) (value >>> 16); |
| blocks[o+1] = (byte) (value >>> 8); |
| blocks[o+2] = (byte) value; |
| } |
| |
| @Override |
| public int set(int index, long[] arr, int off, int len) { |
| assert len > 0 : "len must be > 0 (got " + len + ")"; |
| assert index >= 0 && index < valueCount; |
| assert off + len <= arr.length; |
| |
| final int sets = Math.min(valueCount - index, len); |
| for (int i = off, o = index * 3, end = off + sets; i < end; ++i) { |
| final long value = arr[i]; |
| blocks[o++] = (byte) (value >>> 16); |
| blocks[o++] = (byte) (value >>> 8); |
| blocks[o++] = (byte) value; |
| } |
| return sets; |
| } |
| |
| @Override |
| public void fill(int fromIndex, int toIndex, long val) { |
| final byte block1 = (byte) (val >>> 16); |
| final byte block2 = (byte) (val >>> 8); |
| final byte block3 = (byte) val; |
| for (int i = fromIndex * 3, end = toIndex * 3; i < end; i += 3) { |
| blocks[i] = block1; |
| blocks[i+1] = block2; |
| blocks[i+2] = block3; |
| } |
| } |
| |
| @Override |
| public void clear() { |
| Arrays.fill(blocks, (byte) 0); |
| } |
| |
| @Override |
| public long ramBytesUsed() { |
| return RamUsageEstimator.alignObjectSize( |
| RamUsageEstimator.NUM_BYTES_OBJECT_HEADER |
| + 2 * Integer.BYTES // valueCount,bitsPerValue |
| + RamUsageEstimator.NUM_BYTES_OBJECT_REF) // blocks ref |
| + RamUsageEstimator.sizeOf(blocks); |
| } |
| |
| @Override |
| public String toString() { |
| return getClass().getSimpleName() + "(bitsPerValue=" + bitsPerValue |
| + ",size=" + size() + ",blocks=" + blocks.length + ")"; |
| } |
| } |