content: // Protocol Buffers - Google's data interchange format
  // Copyright 2013 Google Inc.  All rights reserved.
  // https://developers.google.com/protocol-buffers/
  //
  // Redistribution and use in source and binary forms, with or without
  // modification, are permitted provided that the following conditions are
  // met:
  //
  //     * Redistributions of source code must retain the above copyright
  // notice, this list of conditions and the following disclaimer.
  //     * Redistributions in binary form must reproduce the above
  // copyright notice, this list of conditions and the following disclaimer
  // in the documentation and/or other materials provided with the
  // distribution.
  //     * Neither the name of Google Inc. nor the names of its
  // contributors may be used to endorse or promote products derived from
  // this software without specific prior written permission.
  //
  // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  
  package com.google.protobuf.nano;
  
  import java.io.IOException;
  import java.util.Arrays;
  
  /**
   * Stores unknown fields. These might be extensions or fields that the generated
   * API doesn't know about yet.
   *
   * @author bduff@google.com (Brian Duff)
   */
  final class UnknownFieldData {
  
      final int tag;
      /**
       * Important: this should be treated as immutable, even though it's possible
       * to change the array values.
       */
      final byte[] bytes;
  
      UnknownFieldData(int tag, byte[] bytes) {
          this.tag = tag;
          this.bytes = bytes;
      }
  
      int computeSerializedSize() {
          int size = 0;
          size += CodedOutputByteBufferNano.computeRawVarint32Size(tag);
          size += bytes.length;
          return size;
      }
  
      void writeTo(CodedOutputByteBufferNano output) throws IOException {
          output.writeRawVarint32(tag);
          output.writeRawBytes(bytes);
      }
  
      @Override
      public boolean equals(Object o) {
          if (o == this) {
              return true;
          }
          if (!(o instanceof UnknownFieldData)) {
              return false;
          }
  
          UnknownFieldData other = (UnknownFieldData) o;
          return tag == other.tag && Arrays.equals(bytes, other.bytes);
      }
  
      @Override
      public int hashCode() {
          int result = 17;
          result = 31 * result + tag;
          result = 31 * result + Arrays.hashCode(bytes);
          return result;
      }
  }
  