| /* |
| * 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.eth; |
| |
| import static java.util.Objects.requireNonNull; |
| |
| import org.apache.tuweni.bytes.Bytes; |
| import org.apache.tuweni.rlp.RLP; |
| import org.apache.tuweni.rlp.RLPException; |
| import org.apache.tuweni.rlp.RLPReader; |
| import org.apache.tuweni.rlp.RLPWriter; |
| |
| import com.google.common.base.Objects; |
| |
| /** |
| * An Ethereum block. |
| */ |
| public final class Block { |
| |
| /** |
| * Deserialize a block from RLP encoded bytes. |
| * |
| * @param encoded The RLP encoded block. |
| * @return The deserialized block. |
| * @throws RLPException If there is an error decoding the block. |
| */ |
| public static Block fromBytes(Bytes encoded) { |
| return RLP.decodeList(encoded, Block::readFrom); |
| } |
| |
| /** |
| * Parse a hexadecimal string into a {@link Block}. |
| * |
| * @param str The hexadecimal string to parse, which may or may not start with "0x". |
| * @return The value corresponding to {@code str}. |
| * @throws IllegalArgumentException if {@code str} does not correspond to a valid hexadecimal representation. |
| * @throws RLPException If there is an error decoding the block. |
| */ |
| public static Block fromHexString(String str) { |
| return RLP.decodeList(Bytes.fromHexString(str), Block::readFrom); |
| } |
| |
| /** |
| * Deserialize a block from an RLP input. |
| * |
| * @param reader The RLP reader. |
| * @return The deserialized block. |
| * @throws RLPException If there is an error decoding the block. |
| */ |
| public static Block readFrom(RLPReader reader) { |
| BlockHeader header = reader.readList(BlockHeader::readFrom); |
| BlockBody body = BlockBody.readFrom(reader); |
| return new Block(header, body); |
| } |
| |
| private final BlockHeader header; |
| private final BlockBody body; |
| |
| /** |
| * Creates a block. |
| * |
| * @param header the header of the block. |
| * @param body the body of the block. |
| */ |
| public Block(BlockHeader header, BlockBody body) { |
| requireNonNull(header); |
| requireNonNull(body); |
| this.header = header; |
| this.body = body; |
| } |
| |
| /** |
| * @return the block body. |
| */ |
| public BlockBody getBody() { |
| return body; |
| } |
| |
| /** |
| * @return the block header. |
| */ |
| public BlockHeader getHeader() { |
| return header; |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!(obj instanceof Block)) { |
| return false; |
| } |
| Block other = (Block) obj; |
| return Objects.equal(header, other.header) && Objects.equal(body, other.body); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Objects.hashCode(header, body); |
| } |
| |
| @Override |
| public String toString() { |
| return "Block{" + "header=" + header + ", body=" + body + '}'; |
| } |
| |
| /** |
| * @return The RLP serialized form of this block. |
| */ |
| public Bytes toBytes() { |
| return RLP.encodeList(this::writeTo); |
| } |
| |
| /** |
| * Write this block to an RLP output. |
| * |
| * @param writer The RLP writer. |
| */ |
| public void writeTo(RLPWriter writer) { |
| writer.writeList(header::writeTo); |
| body.writeTo(writer); |
| } |
| } |