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60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
#pragma once
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#include <xrpl/protocol/XRPAmount.h>
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#include <cstdint>
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namespace xrpl {
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// Deprecated constant for backwards compatibility with pre-XRPFees amendment.
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// This was the reference fee units used in the old fee calculation.
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inline constexpr std::uint32_t kFeeUnitsDeprecated = 10;
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/**
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* Reflects the fee settings for a particular ledger.
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*
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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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/**
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* @brief Cost of a reference transaction in drops.
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*/
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XRPAmount base{0};
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/**
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* @brief Minimum XRP an account must hold to exist on the ledger.
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*/
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XRPAmount reserve{0};
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/**
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* @brief Additional XRP reserve required per owned ledger object.
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*/
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XRPAmount increment{0};
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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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Fees(XRPAmount base, XRPAmount reserve, XRPAmount increment)
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: base(base), reserve(reserve), increment(increment)
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{
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}
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/**
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* Returns the account reserve given the owner count, in drops.
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*
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* The reserve is calculated as the reserve base times the number of accounts plus the reserve
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* increment times the number of increments.
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*/
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[[nodiscard]] XRPAmount
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accountReserve(std::uint32_t ownerCount, std::uint32_t accountCount) const
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{
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return (reserve * accountCount) + (increment * ownerCount);
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}
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};
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} // namespace xrpl
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