/*
 * Copyright Hyperledger Besu 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */
package org.hyperledger.besu.ethereum.core;

import org.hyperledger.besu.evm.worldstate.MutableWorldView;
import org.hyperledger.besu.evm.worldstate.WorldState;

public interface MutableWorldState extends WorldState, MutableWorldView {

  /**
   * Persist accumulated changes to underlying storage.
   *
   * @param blockHeader If persisting for an imported block, the block hash of the world state this
   *     represents. If this does not represent a forward transition from one block to the next
   *     `null` should be passed in.
   */
  void persist(BlockHeader blockHeader);

  default MutableWorldState freeze() {
    // no op
    throw new UnsupportedOperationException("cannot freeze");
  }
}
