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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.route;
import com.swirlds.common.merkle.MerkleNode;
import java.util.Iterator;
import java.util.LinkedList;
/**
* Iterate over a route in a merkle tree in reverse order (from leaf to root).
*/
public class ReverseMerkleRouteIterator implements Iterator {
private final Iterator iterator;
public ReverseMerkleRouteIterator(final MerkleNode root, final MerkleRoute routeData) {
LinkedList nodes = new LinkedList<>();
MerkleRouteIterator it = new MerkleRouteIterator(root, routeData);
while (it.hasNext()) {
nodes.addFirst(it.next());
}
iterator = nodes.iterator();
}
@Override
public boolean hasNext() {
return iterator.hasNext();
}
@Override
public MerkleNode next() {
return iterator.next();
}
}