Files
rippled/include/xrpl/tx/invariants/MPTInvariant.h
2026-05-06 14:13:59 +01:00

60 lines
1.5 KiB
C++

#pragma once
#include <xrpl/beast/utility/Journal.h>
#include <xrpl/ledger/ReadView.h>
#include <xrpl/protocol/STTx.h>
#include <xrpl/protocol/TER.h>
#include <cstdint>
namespace xrpl {
class ValidMPTIssuance
{
std::uint32_t mptIssuancesCreated_ = 0;
std::uint32_t mptIssuancesDeleted_ = 0;
std::uint32_t mptokensCreated_ = 0;
std::uint32_t mptokensDeleted_ = 0;
// non-MPT transactions may attempt to create
// MPToken by an issuer
bool mptCreatedByIssuer_ = false;
public:
void
visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
[[nodiscard]] bool
finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&) const;
};
/** Verify:
* - OutstandingAmount <= MaximumAmount for any MPT
* - OutstandingAmount after = OutstandingAmount before +
* sum (MPT after - MPT before) - this is total MPT credit/debit
*/
class ValidMPTPayment
{
enum Order { Before = 0, After = 1 };
struct MPTData
{
std::array<std::int64_t, After + 1> outstanding{};
// sum (MPT after - MPT before)
std::int64_t mptAmount{0};
};
// true if OutstandingAmount > MaximumAmount in after for any MPT
bool overflow_{false};
// mptid:MPTData
hash_map<uint192, MPTData> data_;
public:
void
visitEntry(bool, std::shared_ptr<SLE const> const&, std::shared_ptr<SLE const> const&);
bool
finalize(STTx const&, TER const, XRPAmount const, ReadView const&, beast::Journal const&);
};
} // namespace xrpl