rlp/src/main/java/org/apache/tuweni/rlp/BytesRLPWriter.java

/*
 * 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.tuweni.rlp;

import org.apache.tuweni.bytes.Bytes;

import java.util.Deque;

final class BytesRLPWriter extends DelegatingRLPWriter<AccumulatingRLPWriter> {

  BytesRLPWriter() {
    super(new AccumulatingRLPWriter());
  }

  Bytes toBytes() {
    Deque<byte[]> values = delegate.values();
    if (values.isEmpty()) {
      return Bytes.EMPTY;
    }
    return Bytes.wrap(values.stream().map(Bytes::wrap).toArray(Bytes[]::new));
  }
}