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.core.io.IORuntimeException;
  import net.openhft.chronicle.hash.serialization.SizedReader;
  import org.jetbrains.annotations.NotNull;
  import org.jetbrains.annotations.Nullable;
  
  public final class ByteArraySizedReader
          implements SizedReader<byte[]>, EnumMarshallable<ByteArraySizedReader> {
  
      public static final ByteArraySizedReader INSTANCE = new ByteArraySizedReader();
  
      private ByteArraySizedReader() {
      }
  
      @NotNull
      @Override
      public byte[] read(@NotNull Bytes in, long size, @Nullable byte[] using) {
          if (size < 0L || size > (long) Integer.MAX_VALUE) {
              throw new IORuntimeException("byte[] size should be non-negative int, " +
                      size + " given. Memory corruption?");
          }
          int arrayLength = (int) size;
          if (using == null || arrayLength != using.length)
              using = new byte[arrayLength];
          in.read(using);
          return using;
      }
  
      @NotNull
      @Override
      public ByteArraySizedReader readResolve() {
          return INSTANCE;
      }
  }
  