block.h

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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2016 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef BITCOIN_PRIMITIVES_BLOCK_H
#define BITCOIN_PRIMITIVES_BLOCK_H
 
#include <primitives/blockhash.h>
#include <primitives/transaction.h>
#include <serialize.h>
#include <uint256.h>
#include <util/time.h>
 
class CBlockHeader {
public:
    // header
    int32_t nVersion;
    BlockHash hashPrevBlock;
    uint256 hashMerkleRoot;
    uint32_t nTime;
    uint32_t nBits;
    uint32_t nNonce;
 
    CBlockHeader() { SetNull(); }
 
    SERIALIZE_METHODS(CBlockHeader, obj) {
        READWRITE(obj.nVersion, obj.hashPrevBlock, obj.hashMerkleRoot,
                  obj.nTime, obj.nBits, obj.nNonce);
    }
 
    void SetNull() {
        nVersion = 0;
        hashPrevBlock = BlockHash();
        hashMerkleRoot.SetNull();
        nTime = 0;
        nBits = 0;
        nNonce = 0;
    }
 
    bool IsNull() const { return (nBits == 0); }
 
    BlockHash GetHash() const;
 
    NodeSeconds Time() const {
        return NodeSeconds{std::chrono::seconds{nTime}};
    }
 
    int64_t GetBlockTime() const { return (int64_t)nTime; }
};
 
class CBlock : public CBlockHeader {
public:
    // network and disk
    std::vector<CTransactionRef> vtx;
 
    // Memory-only flags for caching expensive checks
    // CheckBlock()
    mutable bool fChecked;
    // CheckMerkleRoot()
    mutable bool m_checked_merkle_root{false};
 
    CBlock() { SetNull(); }
 
    CBlock(const CBlockHeader &header) {
        SetNull();
        *(static_cast<CBlockHeader *>(this)) = header;
    }
 
    SERIALIZE_METHODS(CBlock, obj) {
        READWRITEAS(CBlockHeader, obj);
        READWRITE(obj.vtx);
    }
 
    void SetNull() {
        CBlockHeader::SetNull();
        vtx.clear();
        fChecked = false;
        m_checked_merkle_root = false;
    }
 
    CBlockHeader GetBlockHeader() const {
        CBlockHeader block;
        block.nVersion = nVersion;
        block.hashPrevBlock = hashPrevBlock;
        block.hashMerkleRoot = hashMerkleRoot;
        block.nTime = nTime;
        block.nBits = nBits;
        block.nNonce = nNonce;
        return block;
    }
 
    std::string ToString() const;
};
 
struct CBlockLocator {
    std::vector<BlockHash> vHave;
 
    CBlockLocator() {}
 
    explicit CBlockLocator(std::vector<BlockHash> &&vHaveIn)
        : vHave(std::move(vHaveIn)) {}
 
    SERIALIZE_METHODS(CBlockLocator, obj) {
        int nVersion = s.GetVersion();
        if (!(s.GetType() & SER_GETHASH)) {
            READWRITE(nVersion);
        }
        READWRITE(obj.vHave);
    }
 
    void SetNull() { vHave.clear(); }
 
    bool IsNull() const { return vHave.empty(); }
};
 
#endif // BITCOIN_PRIMITIVES_BLOCK_H