LCOV - code coverage report
Current view: top level - src - undo.h (source / functions) Coverage Total Hit
Test: fuzz_coverage.info Lines: 100.0 % 19 19
Test Date: 2024-12-02 12:23:29 Functions: 83.3 % 12 10
Branches: 100.0 % 4 4

             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                 :             : 
      15                 :             : /** Formatter for undo information for a CTxIn
      16                 :             :  *
      17                 :             :  *  Contains the prevout's CTxOut being spent, and its metadata as well
      18                 :             :  *  (coinbase or not, height). The serialization contains a dummy value of
      19                 :             :  *  zero. This is compatible with older versions which expect to see
      20                 :             :  *  the transaction version there.
      21                 :             :  */
      22                 :             : struct TxInUndoFormatter
      23                 :             : {
      24                 :             :     template<typename Stream>
      25                 :     2562189 :     void Ser(Stream &s, const Coin& txout) {
      26                 :     2562189 :         ::Serialize(s, VARINT(txout.nHeight * uint32_t{2} + txout.fCoinBase ));
      27         [ +  + ]:     2562189 :         if (txout.nHeight > 0) {
      28                 :             :             // Required to maintain compatibility with older undo format.
      29                 :     1199757 :             ::Serialize(s, (unsigned char)0);
      30                 :             :         }
      31                 :     2562189 :         ::Serialize(s, Using<TxOutCompression>(txout.out));
      32                 :     2562189 :     }
      33                 :             : 
      34                 :             :     template<typename Stream>
      35                 :     4583765 :     void Unser(Stream &s, Coin& txout) {
      36                 :     4583765 :         uint32_t nCode = 0;
      37                 :     4583765 :         ::Unserialize(s, VARINT(nCode));
      38                 :     4583695 :         txout.nHeight = nCode >> 1;
      39                 :     4583695 :         txout.fCoinBase = nCode & 1;
      40         [ +  + ]:     4583695 :         if (txout.nHeight > 0) {
      41                 :             :             // Old versions stored the version number for the last spend of
      42                 :             :             // a transaction's outputs. Non-final spends were indicated with
      43                 :             :             // height = 0.
      44                 :             :             unsigned int nVersionDummy;
      45                 :     2538182 :             ::Unserialize(s, VARINT(nVersionDummy));
      46                 :             :         }
      47                 :     4583687 :         ::Unserialize(s, Using<TxOutCompression>(txout.out));
      48                 :     4583634 :     }
      49                 :             : };
      50                 :             : 
      51                 :             : /** Undo information for a CTransaction */
      52                 :    22056676 : class CTxUndo
      53                 :             : {
      54                 :             : public:
      55                 :             :     // undo information for all txins
      56                 :             :     std::vector<Coin> vprevout;
      57                 :             : 
      58                 :    18977692 :     SERIALIZE_METHODS(CTxUndo, obj) { READWRITE(Using<VectorFormatter<TxInUndoFormatter>>(obj.vprevout)); }
      59                 :             : };
      60                 :             : 
      61                 :             : /** Undo information for a CBlock */
      62                 :      206331 : class CBlockUndo
      63                 :             : {
      64                 :             : public:
      65                 :             :     std::vector<CTxUndo> vtxundo; // for all but the coinbase
      66                 :             : 
      67                 :      329450 :     SERIALIZE_METHODS(CBlockUndo, obj) { READWRITE(obj.vtxundo); }
      68                 :             : };
      69                 :             : 
      70                 :             : #endif // BITCOIN_UNDO_H
        

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