tx/transactors/dex/OfferCreate.h

#pragma once
 
#include <xrpl/basics/base_uint.h>
#include <xrpl/beast/utility/Journal.h>
#include <xrpl/core/ServiceRegistry.h>
#include <xrpl/ledger/ApplyView.h>
#include <xrpl/ledger/ReadView.h>
#include <xrpl/protocol/AccountID.h>
#include <xrpl/protocol/Asset.h>
#include <xrpl/protocol/Keylet.h>
#include <xrpl/protocol/Quality.h>
#include <xrpl/protocol/STAmount.h>
#include <xrpl/protocol/STLedgerEntry.h>
#include <xrpl/protocol/STTx.h>
#include <xrpl/protocol/TER.h>
#include <xrpl/protocol/XRPAmount.h>
#include <xrpl/tx/ApplyContext.h>
#include <xrpl/tx/Transactor.h>
 
#include <cstdint>
#include <functional>
#include <optional>
#include <string>
#include <utility>
 
namespace xrpl {
 
class PaymentSandbox;
class Sandbox;

class OfferCreate : public Transactor
{
public:
    static constexpr auto kConsequencesFactory = ConsequencesFactoryType::Custom;

    explicit OfferCreate(ApplyContext& ctx) : Transactor(ctx)
    {
    }
 
    static TxConsequences
    makeTxConsequences(PreflightContext const& ctx);
 
    static bool
    checkExtraFeatures(PreflightContext const& ctx);
 
    static std::uint32_t
    getFlagsMask(PreflightContext const& ctx);

    static NotTEC
    preflight(PreflightContext const& ctx);

    static TER
    preclaim(PreclaimContext const& ctx);

    TER
    doApply() override;
 
    void
    visitInvariantEntry(bool isDelete, SLE::ConstRef before, SLE::ConstRef after) override;
 
    [[nodiscard]] bool
    finalizeInvariants(
        STTx const& tx,
        TER result,
        XRPAmount fee,
        ReadView const& view,
        beast::Journal const& j) override;
 
private:
    std::pair<TER, bool>
    applyGuts(Sandbox& view, Sandbox& viewCancel);
 
    // Determine if we are authorized to hold the asset we want to get.
    static TER
    checkAcceptAsset(
        ReadView const& view,
        ApplyFlags const flags,
        AccountID const id,
        beast::Journal const j,
        Asset const& asset);
 
    // Use the payment flow code to perform offer crossing.
    std::pair<TER, Amounts>
    flowCross(
        PaymentSandbox& psb,
        PaymentSandbox& psbCancel,
        Amounts const& takerAmount,
        std::optional<UInt256> const& domainID);
 
    static std::string
    formatAmount(STAmount const& amount);
 
    TER
    applyHybrid(
        Sandbox& sb,
        STLedgerEntry::pointer sleOffer,
        Keylet const& offerIndex,
        STAmount const& saTakerPays,
        STAmount const& saTakerGets,
        std::uint64_t openRate,
        std::function<void(SLE::Ref, std::optional<UInt256>)> const& setDir);
};
 
}  // namespace xrpl