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145 lines
3.2 KiB
C++
145 lines
3.2 KiB
C++
#ifndef XRPL_LEDGER_APPLYSTATETABLE_H_INCLUDED
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#define XRPL_LEDGER_APPLYSTATETABLE_H_INCLUDED
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#include <xrpl/beast/utility/Journal.h>
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#include <xrpl/ledger/OpenView.h>
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#include <xrpl/ledger/RawView.h>
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#include <xrpl/ledger/ReadView.h>
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#include <xrpl/protocol/TER.h>
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#include <xrpl/protocol/TxMeta.h>
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#include <xrpl/protocol/XRPAmount.h>
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#include <memory>
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namespace xrpl {
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namespace detail {
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// Helper class that buffers modifications
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class ApplyStateTable
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{
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public:
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using key_type = ReadView::key_type;
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private:
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enum class Action {
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cache,
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erase,
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insert,
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modify,
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};
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using items_t = std::map<key_type, std::pair<Action, std::shared_ptr<SLE>>>;
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items_t items_;
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XRPAmount dropsDestroyed_{0};
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public:
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ApplyStateTable() = default;
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ApplyStateTable(ApplyStateTable&&) = default;
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ApplyStateTable(ApplyStateTable const&) = delete;
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ApplyStateTable&
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operator=(ApplyStateTable&&) = delete;
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ApplyStateTable&
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operator=(ApplyStateTable const&) = delete;
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void
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apply(RawView& to) const;
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std::optional<TxMeta>
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apply(
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OpenView& to,
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STTx const& tx,
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TER ter,
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std::optional<STAmount> const& deliver,
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std::optional<uint256 const> const& parentBatchId,
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bool isDryRun,
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beast::Journal j);
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bool
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exists(ReadView const& base, Keylet const& k) const;
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std::optional<key_type>
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succ(
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ReadView const& base,
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key_type const& key,
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std::optional<key_type> const& last) const;
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std::shared_ptr<SLE const>
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read(ReadView const& base, Keylet const& k) const;
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std::shared_ptr<SLE>
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peek(ReadView const& base, Keylet const& k);
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std::size_t
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size() const;
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void
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visit(
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ReadView const& base,
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std::function<void(
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uint256 const& key,
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bool isDelete,
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std::shared_ptr<SLE const> const& before,
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std::shared_ptr<SLE const> const& after)> const& func) const;
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void
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erase(ReadView const& base, std::shared_ptr<SLE> const& sle);
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void
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rawErase(ReadView const& base, std::shared_ptr<SLE> const& sle);
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void
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insert(ReadView const& base, std::shared_ptr<SLE> const& sle);
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void
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update(ReadView const& base, std::shared_ptr<SLE> const& sle);
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void
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replace(ReadView const& base, std::shared_ptr<SLE> const& sle);
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void
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destroyXRP(XRPAmount const& fee);
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// For debugging
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XRPAmount const&
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dropsDestroyed() const
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{
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return dropsDestroyed_;
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}
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private:
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using Mods = hash_map<key_type, std::shared_ptr<SLE>>;
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static void
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threadItem(TxMeta& meta, std::shared_ptr<SLE> const& to);
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std::shared_ptr<SLE>
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getForMod(
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ReadView const& base,
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key_type const& key,
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Mods& mods,
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beast::Journal j);
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void
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threadTx(
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ReadView const& base,
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TxMeta& meta,
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AccountID const& to,
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Mods& mods,
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beast::Journal j);
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void
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threadOwners(
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ReadView const& base,
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TxMeta& meta,
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std::shared_ptr<SLE const> const& sle,
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Mods& mods,
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beast::Journal j);
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};
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} // namespace detail
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} // namespace xrpl
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#endif
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