LCOV - code coverage report
Current view: top level - src/util - transaction_identifier.h (source / functions) Coverage Total Hit
Test: total_coverage.info Lines: 100.0 % 23 23
Test Date: 2025-06-01 06:26:32 Functions: 100.0 % 2 2
Branches: 38.5 % 1602 616

             Branch data     Line data    Source code
       1                 :             : // Copyright (c) 2023-present The Bitcoin Core developers
       2                 :             : // Distributed under the MIT software license, see the accompanying
       3                 :             : // file COPYING or https://opensource.org/license/mit.
       4                 :             : 
       5                 :             : #ifndef BITCOIN_UTIL_TRANSACTION_IDENTIFIER_H
       6                 :             : #define BITCOIN_UTIL_TRANSACTION_IDENTIFIER_H
       7                 :             : 
       8                 :             : #include <attributes.h>
       9                 :             : #include <uint256.h>
      10                 :             : #include <util/types.h>
      11                 :             : 
      12                 :             : /** transaction_identifier represents the two canonical transaction identifier
      13                 :             :  * types (txid, wtxid).*/
      14                 :             : template <bool has_witness>
      15                 :             : class transaction_identifier
      16                 :             : {
      17                 :             :     uint256 m_wrapped;
      18                 :             : 
      19                 :             :     // Note: Use FromUint256 externally instead.
      20                 :     3147673 :     transaction_identifier(const uint256& wrapped) : m_wrapped{wrapped} {}
      21                 :             : 
      22                 :             :     // TODO: Comparisons with uint256 should be disallowed once we have
      23                 :             :     // converted most of the code to using the new txid types.
      24                 :        5817 :     constexpr int Compare(const uint256& other) const { return m_wrapped.Compare(other); }
      25                 :   775530892 :     constexpr int Compare(const transaction_identifier<has_witness>& other) const { return m_wrapped.Compare(other.m_wrapped); }
      26                 :             :     template <typename Other>
      27                 :             :     constexpr int Compare(const Other& other) const
      28                 :             :     {
      29                 :             :         static_assert(ALWAYS_FALSE<Other>, "Forbidden comparison type");
      30                 :             :         return 0;
      31                 :             :     }
      32                 :             : 
      33                 :             : public:
      34   [ +  -  +  -  :     1867222 :     transaction_identifier() : m_wrapped{} {}
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      35                 :             : 
      36                 :             :     template <typename Other>
      37   [ +  +  +  + ]:   106420815 :     bool operator==(const Other& other) const { return Compare(other) == 0; }
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      38                 :             :     template <typename Other>
      39   [ +  +  #  # ]:       81331 :     bool operator!=(const Other& other) const { return Compare(other) != 0; }
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      40                 :             :     template <typename Other>
      41   [ +  +  +  +  :   390782592 :     bool operator<(const Other& other) const { return Compare(other) < 0; }
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      42                 :             : 
      43   [ +  -  +  -  :     1008343 :     const uint256& ToUint256() const LIFETIMEBOUND { return m_wrapped; }
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      44 [ +  - ][ +  -  :     1428560 :     static transaction_identifier FromUint256(const uint256& id) { return {id}; }
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      45                 :             : 
      46                 :             :     /** Wrapped `uint256` methods. */
      47         [ +  + ]:    25606215 :     constexpr bool IsNull() const { return m_wrapped.IsNull(); }
      48 [ +  - ][ +  -  :       94772 :     constexpr void SetNull() { m_wrapped.SetNull(); }
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      49                 :        5073 :     static std::optional<transaction_identifier> FromHex(std::string_view hex)
      50                 :             :     {
      51         [ +  + ]:        5073 :         auto u{uint256::FromHex(hex)};
      52         [ +  + ]:        5073 :         if (!u) return std::nullopt;
      53                 :        4901 :         return FromUint256(*u);
      54                 :             :     }
      55   [ +  -  +  -  :      231596 :     std::string GetHex() const { return m_wrapped.GetHex(); }
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      56   [ +  -  +  - ]:      509157 :     std::string ToString() const { return m_wrapped.ToString(); }
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      57                 :             :     static constexpr auto size() { return decltype(m_wrapped)::size(); }
      58   [ +  -  +  -  :           6 :     constexpr const std::byte* data() const { return reinterpret_cast<const std::byte*>(m_wrapped.data()); }
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      59         [ +  - ]:      259125 :     constexpr const std::byte* begin() const { return reinterpret_cast<const std::byte*>(m_wrapped.begin()); }
      60                 :         311 :     constexpr const std::byte* end() const { return reinterpret_cast<const std::byte*>(m_wrapped.end()); }
      61                 :    31679491 :     template <typename Stream> void Serialize(Stream& s) const { m_wrapped.Serialize(s); }
      62                 :      690462 :     template <typename Stream> void Unserialize(Stream& s) { m_wrapped.Unserialize(s); }
      63                 :             : 
      64                 :             :     /** Conversion function to `uint256`.
      65                 :             :      *
      66                 :             :      * Note: new code should use `ToUint256`.
      67                 :             :      *
      68                 :             :      * TODO: This should be removed once the majority of the code has switched
      69                 :             :      * to using the Txid and Wtxid types. Until then it makes for a smoother
      70                 :             :      * transition to allow this conversion. */
      71   [ +  -  +  -  :   295275781 :     operator const uint256&() const LIFETIMEBOUND { return m_wrapped; }
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      72                 :             : };
      73                 :             : 
      74                 :             : /** Txid commits to all transaction fields except the witness. */
      75                 :             : using Txid = transaction_identifier<false>;
      76                 :             : /** Wtxid commits to all transaction fields including the witness. */
      77                 :             : using Wtxid = transaction_identifier<true>;
      78                 :             : 
      79                 :             : #endif // BITCOIN_UTIL_TRANSACTION_IDENTIFIER_H
        

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