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       1                 :             : // Copyright (c) 2009-2010 Satoshi Nakamoto
       2                 :             : // Copyright (c) 2009-present 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                 :             : #include <consensus/amount.h>
       7                 :             : #include <policy/feerate.h>
       8                 :             : #include <tinyformat.h>
       9                 :             : 
      10                 :             : #include <cstdlib>
      11                 :             : 
      12         [ +  + ]:      143276 : CFeeRate::CFeeRate(const CAmount& nFeePaid, int32_t virtual_bytes)
      13                 :             : {
      14         [ +  + ]:      143276 :     if (virtual_bytes > 0) {
      15                 :      143272 :         m_feerate = FeePerVSize(nFeePaid, virtual_bytes);
      16                 :             :     } else {
      17                 :           4 :         m_feerate = FeePerVSize();
      18                 :             :     }
      19                 :      143276 : }
      20                 :             : 
      21                 :     1916660 : CAmount CFeeRate::GetFee(int32_t virtual_bytes) const
      22                 :             : {
      23         [ +  - ]:     1916660 :     Assume(virtual_bytes >= 0);
      24         [ +  - ]:     1916660 :     if (m_feerate.IsEmpty()) { return CAmount(0);}
      25                 :     1916660 :     CAmount nFee = CAmount(m_feerate.EvaluateFeeUp(virtual_bytes));
      26   [ +  +  +  + ]:     1916660 :     if (nFee == 0 && virtual_bytes != 0 && m_feerate.fee < 0) return CAmount(-1);
      27                 :             :     return nFee;
      28                 :             : }
      29                 :             : 
      30                 :        3228 : std::string CFeeRate::ToString(FeeRateFormat fee_rate_format) const
      31                 :             : {
      32      [ +  +  - ]:        3228 :     const CAmount feerate_per_kvb{GetFeePerK()};
      33                 :        6456 :     const auto format_feerate = [](const CAmount fee_rate, const CAmount divisor, const int decimals, const std::string& currency_unit, const std::string& size_unit) {
      34         [ -  + ]:        3228 :         Assert(divisor > 0);
      35         [ +  + ]:        3228 :         const char* sign{fee_rate < 0 ? "-" : ""};
      36                 :        3228 :         const CAmount quotient{std::abs(fee_rate / divisor)};
      37                 :        3228 :         const CAmount remainder{std::abs(fee_rate % divisor)};
      38                 :        3228 :         return strprintf("%s%d.%0*d %s/%s", sign, quotient, decimals, remainder, currency_unit, size_unit);
      39                 :             :     };
      40      [ +  +  - ]:        3228 :     switch (fee_rate_format) {
      41         [ +  - ]:        2442 :     case FeeRateFormat::BTC_KVB: return format_feerate(feerate_per_kvb, COIN, /*decimals=*/8, CURRENCY_UNIT, "kvB");
      42         [ +  - ]:        4014 :     case FeeRateFormat::SAT_VB: return format_feerate(feerate_per_kvb, 1000, /*decimals=*/3, CURRENCY_ATOM, "vB");
      43                 :             :     } // no default case, so the compiler can warn about missing cases
      44                 :           0 :     assert(false);
      45                 :             : }