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Swirlds is a software platform designed to build fully-distributed applications that harness the power of the cloud without servers. Now you can develop applications with fairness in decision making, speed, trust and reliability, at a fraction of the cost of traditional server-based platforms.
/*
* Copyright (C) 2016-2024 Hedera Hashgraph, LLC
*
* 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 com.swirlds.common.merkle.iterators;
/**
* Defines different iteration orders for merkle trees.
*/
public enum MerkleIterationOrder {
/**
* A depth first traversal where parents are visited after their children (i.e. standard depth first).
* This is the default iteration order for a {@link MerkleIterator}.
*/
POST_ORDERED_DEPTH_FIRST,
/**
* Similar to {@link #POST_ORDERED_DEPTH_FIRST}, but with order between sibling subtrees reversed.
*/
REVERSE_POST_ORDERED_DEPTH_FIRST,
/**
* Similar to {@link #POST_ORDERED_DEPTH_FIRST}, but with order between sibling subtrees randomized.
*/
POST_ORDERED_DEPTH_FIRST_RANDOM,
/**
* A depth first traversal where parents are visited before their children.
*/
PRE_ORDERED_DEPTH_FIRST,
/**
* A breadth first traversal.
*/
BREADTH_FIRST,
}