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49 lines
1.5 KiB
C++
49 lines
1.5 KiB
C++
#pragma once
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#include <xrpl/protocol/XRPAmount.h>
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namespace xrpl {
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/** Reflects the fee settings for a particular ledger.
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The fees are always the same for any transactions applied
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to a ledger. Changes to fees occur in between ledgers.
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*/
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struct Fees
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{
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XRPAmount base{0}; // Reference tx cost (drops)
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XRPAmount reserve{0}; // Reserve base (drops)
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XRPAmount increment{0}; // Reserve increment (drops)
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explicit Fees() = default;
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Fees(Fees const&) = default;
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Fees&
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operator=(Fees const&) = default;
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/** Returns the account reserve given the owner count, in drops.
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The reserve is calculated as the reserve base plus
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the reserve increment times the number of increments.
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*/
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XRPAmount
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accountReserve(
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std::size_t ownerCount,
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std::size_t sponsoredOwnerCount = 0,
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std::size_t sponsoringOwnerCount = 0,
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bool isAccountSponsored = false,
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std::size_t sponsoringAccountCount = 0) const
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{
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auto const accountReserveUnits = (isAccountSponsored ? 0 : 1) + sponsoringAccountCount;
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XRPL_ASSERT(
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ownerCount >= sponsoredOwnerCount,
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"xrpl::Fees::accountReserve : OwnerCount must be greater than or equal to SponsoredOwnerCount");
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auto const ownerReserveUnits = (ownerCount - sponsoredOwnerCount) + sponsoringOwnerCount;
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return (reserve * accountReserveUnits) + (increment * ownerReserveUnits);
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}
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};
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} // namespace xrpl
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