LCOV - code coverage report
Current view: top level - src - undo.h (source / functions) Hit Total Coverage
Test: fuzz_coverage.info Lines: 1 21 4.8 %
Date: 2023-11-06 23:13:05 Functions: 13 47 27.7 %
Branches: 0 8 0.0 %

           Branch data     Line data    Source code
       1                 :            : // Copyright (c) 2009-2010 Satoshi Nakamoto
       2                 :            : // Copyright (c) 2009-2020 The Bitcoin Core developers
       3                 :            : // Distributed under the MIT software license, see the accompanying
       4                 :            : // file COPYING or http://www.opensource.org/licenses/mit-license.php.
       5                 :            : 
       6                 :            : #ifndef BITCOIN_UNDO_H
       7                 :            : #define BITCOIN_UNDO_H
       8                 :            : 
       9                 :            : #include <coins.h>
      10                 :            : #include <compressor.h>
      11                 :            : #include <consensus/consensus.h>
      12                 :            : #include <primitives/transaction.h>
      13                 :            : #include <serialize.h>
      14                 :            : #include <version.h>
      15                 :            : 
      16                 :            : /** Formatter for undo information for a CTxIn
      17                 :            :  *
      18                 :            :  *  Contains the prevout's CTxOut being spent, and its metadata as well
      19                 :            :  *  (coinbase or not, height). The serialization contains a dummy value of
      20                 :            :  *  zero. This is compatible with older versions which expect to see
      21                 :            :  *  the transaction version there.
      22                 :            :  */
      23                 :            : struct TxInUndoFormatter
      24                 :            : {
      25                 :            :     template<typename Stream>
      26                 :          0 :     void Ser(Stream &s, const Coin& txout) {
      27                 :          0 :         ::Serialize(s, VARINT(txout.nHeight * uint32_t{2} + txout.fCoinBase ));
      28 [ #  # ][ #  # ]:          0 :         if (txout.nHeight > 0) {
                 [ #  # ]
      29                 :            :             // Required to maintain compatibility with older undo format.
      30                 :          0 :             ::Serialize(s, (unsigned char)0);
      31                 :          0 :         }
      32                 :          0 :         ::Serialize(s, Using<TxOutCompression>(txout.out));
      33                 :          0 :     }
      34                 :            : 
      35                 :            :     template<typename Stream>
      36                 :          0 :     void Unser(Stream &s, Coin& txout) {
      37                 :          0 :         uint32_t nCode = 0;
      38                 :          0 :         ::Unserialize(s, VARINT(nCode));
      39                 :          0 :         txout.nHeight = nCode >> 1;
      40                 :          0 :         txout.fCoinBase = nCode & 1;
      41         [ #  # ]:          0 :         if (txout.nHeight > 0) {
      42                 :            :             // Old versions stored the version number for the last spend of
      43                 :            :             // a transaction's outputs. Non-final spends were indicated with
      44                 :            :             // height = 0.
      45                 :            :             unsigned int nVersionDummy;
      46                 :          0 :             ::Unserialize(s, VARINT(nVersionDummy));
      47                 :          0 :         }
      48                 :          0 :         ::Unserialize(s, Using<TxOutCompression>(txout.out));
      49                 :          0 :     }
      50                 :            : };
      51                 :            : 
      52                 :            : /** Undo information for a CTransaction */
      53                 :          0 : class CTxUndo
      54                 :            : {
      55                 :            : public:
      56                 :            :     // undo information for all txins
      57                 :            :     std::vector<Coin> vprevout;
      58                 :            : 
      59                 :          0 :     SERIALIZE_METHODS(CTxUndo, obj) { READWRITE(Using<VectorFormatter<TxInUndoFormatter>>(obj.vprevout)); }
      60                 :            : };
      61                 :            : 
      62                 :            : /** Undo information for a CBlock */
      63                 :          0 : class CBlockUndo
      64                 :            : {
      65                 :            : public:
      66                 :            :     std::vector<CTxUndo> vtxundo; // for all but the coinbase
      67                 :            : 
      68                 :       2400 :     SERIALIZE_METHODS(CBlockUndo, obj) { READWRITE(obj.vtxundo); }
      69                 :            : };
      70                 :            : 
      71                 :            : #endif // BITCOIN_UNDO_H

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