code: /*
   * Copyright 2012-2018 Chronicle Map Contributors
   *
   * 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 net.openhft.chronicle.hash.serialization.impl;
  
  import net.openhft.chronicle.bytes.Bytes;
  import net.openhft.chronicle.bytes.BytesUtil;
  import net.openhft.chronicle.hash.serialization.SizeMarshaller;
  import org.jetbrains.annotations.NotNull;
  
  import static java.lang.Math.max;
  import static java.lang.Math.min;
  
  public final class StopBitSizeMarshaller
          implements SizeMarshaller, EnumMarshallable<StopBitSizeMarshaller> {
      public static final StopBitSizeMarshaller INSTANCE = new StopBitSizeMarshaller();
      private static final long MIN_ENCODABLE_SIZE = Long.MIN_VALUE;
      private static final long MAX_ENCODABLE_SIZE = Long.MAX_VALUE;
  
      private StopBitSizeMarshaller() {
      }
  
      private static void rangeChecks(long minSize, long maxSize) {
          if (minSize > maxSize)
              throw new IllegalArgumentException("minSize = " + minSize + ", maxSize = " + maxSize);
      }
  
      @Override
      public int storingLength(long size) {
          return BytesUtil.stopBitLength(size);
      }
  
      @Override
      public long minStorableSize() {
          return MIN_ENCODABLE_SIZE;
      }
  
      @Override
      public long maxStorableSize() {
          return MAX_ENCODABLE_SIZE;
      }
  
      @Override
      public int minStoringLengthOfSizesInRange(long minSize, long maxSize) {
          rangeChecks(minSize, maxSize);
          // different signs
          if (minSize * maxSize < 0) {
              // the range includes 0 which encoding length is 1
              return 1;
          }
          return min(storingLength(minSize), storingLength(maxSize));
      }
  
      @Override
      public int maxStoringLengthOfSizesInRange(long minSize, long maxSize) {
          rangeChecks(minSize, maxSize);
          return max(storingLength(minSize), storingLength(maxSize));
      }
  
      @Override
      public void writeSize(Bytes out, long sizeToWrite) {
          BytesUtil.writeStopBit(out, sizeToWrite);
      }
  
      @Override
      public long readSize(Bytes in) {
          return BytesUtil.readStopBit(in);
      }
  
      @NotNull
      @Override
      public StopBitSizeMarshaller readResolve() {
          return INSTANCE;
      }
  }
  