mirror of
https://github.com/XRPLF/rippled.git
synced 2026-06-02 16:26:48 +00:00
553 lines
11 KiB
C++
553 lines
11 KiB
C++
#pragma once
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#include <xrpl/basics/CountedObject.h>
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#include <xrpl/beast/utility/instrumentation.h>
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#include <xrpl/json/json_value.h>
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#include <xrpl/protocol/Asset.h>
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#include <xrpl/protocol/PathAsset.h>
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#include <xrpl/protocol/SField.h>
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#include <xrpl/protocol/STBase.h>
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#include <xrpl/protocol/UintTypes.h>
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#include <cstddef>
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#include <optional>
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namespace xrpl {
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class STPathElement final : public CountedObject<STPathElement>
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{
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unsigned int type_;
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AccountID accountID_;
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PathAsset assetID_;
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AccountID issuerID_;
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bool isOffer_;
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std::size_t hashValue_;
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public:
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// Bitwise values (typeCurrency | typeMPT)
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// NOLINTNEXTLINE(cppcoreguidelines-use-enum-class)
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enum Type {
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TypeNone = 0x00,
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TypeAccount = 0x01, // Rippling through an account (vs taking an offer).
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TypeCurrency = 0x10, // Currency follows.
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TypeIssuer = 0x20, // Issuer follows.
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TypeMpt = 0x40, // MPT follows.
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TypeBoundary = 0xFF, // Boundary between alternate paths.
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TypeAsset = TypeCurrency | TypeMpt,
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TypeAll = TypeAccount | TypeCurrency | TypeIssuer | TypeMpt,
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// Combination of all types.
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};
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STPathElement();
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STPathElement(STPathElement const&) = default;
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STPathElement&
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operator=(STPathElement const&) = default;
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STPathElement(
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std::optional<AccountID> const& account,
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std::optional<PathAsset> const& asset,
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std::optional<AccountID> const& issuer);
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STPathElement(
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AccountID const& account,
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PathAsset const& asset,
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AccountID const& issuer,
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bool forceAsset = false);
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STPathElement(
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unsigned int uType,
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AccountID const& account,
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PathAsset const& asset,
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AccountID const& issuer);
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[[nodiscard]] auto
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getNodeType() const;
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[[nodiscard]] bool
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isOffer() const;
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[[nodiscard]] bool
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isAccount() const;
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[[nodiscard]] bool
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hasIssuer() const;
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[[nodiscard]] bool
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hasCurrency() const;
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[[nodiscard]] bool
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hasMPT() const;
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[[nodiscard]] bool
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hasAsset() const;
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[[nodiscard]] bool
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isNone() const;
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// Nodes are either an account ID or a offer prefix. Offer prefixs denote a
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// class of offers.
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[[nodiscard]] AccountID const&
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getAccountID() const;
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[[nodiscard]] PathAsset const&
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getPathAsset() const;
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[[nodiscard]] Currency const&
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getCurrency() const;
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[[nodiscard]] MPTID const&
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getMPTID() const;
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[[nodiscard]] AccountID const&
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getIssuerID() const;
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[[nodiscard]] bool
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isType(Type const& pe) const;
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bool
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operator==(STPathElement const& t) const;
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bool
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operator!=(STPathElement const& t) const;
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private:
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static std::size_t
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getHash(STPathElement const& element);
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};
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class STPath final : public CountedObject<STPath>
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{
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std::vector<STPathElement> path_;
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public:
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STPath() = default;
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STPath(std::vector<STPathElement> p);
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[[nodiscard]] std::vector<STPathElement>::size_type
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size() const;
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[[nodiscard]] bool
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empty() const;
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void
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pushBack(STPathElement const& e);
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template <typename... Args>
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void
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emplaceBack(Args&&... args);
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[[nodiscard]] bool
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hasSeen(AccountID const& account, PathAsset const& asset, AccountID const& issuer) const;
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[[nodiscard]] json::Value getJson(JsonOptions) const;
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[[nodiscard]] std::vector<STPathElement>::const_iterator
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begin() const;
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[[nodiscard]] std::vector<STPathElement>::const_iterator
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end() const;
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bool
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operator==(STPath const& t) const;
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[[nodiscard]] std::vector<STPathElement>::const_reference
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back() const;
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[[nodiscard]] std::vector<STPathElement>::const_reference
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front() const;
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STPathElement&
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operator[](int i);
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STPathElement const&
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operator[](int i) const;
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void
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reserve(size_t s);
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};
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//------------------------------------------------------------------------------
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// A set of zero or more payment paths
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class STPathSet final : public STBase, public CountedObject<STPathSet>
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{
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std::vector<STPath> value_;
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public:
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STPathSet() = default;
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STPathSet(SField const& n);
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STPathSet(SerialIter& sit, SField const& name);
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void
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add(Serializer& s) const override;
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[[nodiscard]] json::Value getJson(JsonOptions) const override;
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[[nodiscard]] SerializedTypeID
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getSType() const override;
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bool
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assembleAdd(STPath const& base, STPathElement const& tail);
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[[nodiscard]] bool
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isEquivalent(STBase const& t) const override;
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[[nodiscard]] bool
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isDefault() const override;
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// std::vector like interface:
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std::vector<STPath>::const_reference
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operator[](std::vector<STPath>::size_type n) const;
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std::vector<STPath>::reference
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operator[](std::vector<STPath>::size_type n);
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[[nodiscard]] std::vector<STPath>::const_iterator
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begin() const;
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[[nodiscard]] std::vector<STPath>::const_iterator
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end() const;
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[[nodiscard]] std::vector<STPath>::size_type
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size() const;
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[[nodiscard]] bool
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empty() const;
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void
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pushBack(STPath const& e);
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template <typename... Args>
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void
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emplaceBack(Args&&... args);
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private:
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STBase*
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copy(std::size_t n, void* buf) const override;
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STBase*
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move(std::size_t n, void* buf) override;
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friend class detail::STVar;
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};
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// ------------ STPathElement ------------
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inline STPathElement::STPathElement() : type_(TypeNone), isOffer_(true)
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{
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hashValue_ = getHash(*this);
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}
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inline STPathElement::STPathElement(
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std::optional<AccountID> const& account,
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std::optional<PathAsset> const& asset,
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std::optional<AccountID> const& issuer)
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: type_(TypeNone)
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{
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if (!account)
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{
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isOffer_ = true;
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}
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else
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{
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isOffer_ = false;
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accountID_ = *account;
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type_ |= TypeAccount;
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XRPL_ASSERT(
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accountID_ != noAccount(), "xrpl::STPathElement::STPathElement : account is set");
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}
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if (asset)
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{
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assetID_ = *asset;
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type_ |= assetID_.holds<Currency>() ? TypeCurrency : TypeMpt;
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}
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if (issuer)
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{
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issuerID_ = *issuer;
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type_ |= TypeIssuer;
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XRPL_ASSERT(issuerID_ != noAccount(), "xrpl::STPathElement::STPathElement : issuer is set");
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}
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hashValue_ = getHash(*this);
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}
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inline STPathElement::STPathElement(
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AccountID const& account,
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PathAsset const& asset,
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AccountID const& issuer,
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bool forceAsset)
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: type_(TypeNone)
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, accountID_(account)
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, assetID_(asset)
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, issuerID_(issuer)
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, isOffer_(isXRP(accountID_))
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{
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if (!isOffer_)
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type_ |= TypeAccount;
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if (forceAsset || !isXRP(assetID_))
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type_ |= asset.holds<Currency>() ? TypeCurrency : TypeMpt;
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if (!isXRP(issuer))
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type_ |= TypeIssuer;
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hashValue_ = getHash(*this);
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}
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inline STPathElement::STPathElement(
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unsigned int uType,
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AccountID const& account,
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PathAsset const& asset,
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AccountID const& issuer)
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: type_(uType)
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, accountID_(account)
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, assetID_(asset)
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, issuerID_(issuer)
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, isOffer_(isXRP(accountID_))
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{
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assetID_.visit(
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[&](Currency const&) { type_ = type_ & (~Type::TypeMpt); },
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[&](MPTID const&) { type_ = type_ & (~Type::TypeCurrency); });
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hashValue_ = getHash(*this);
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}
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inline auto
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STPathElement::getNodeType() const
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{
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return type_;
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}
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inline bool
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STPathElement::isOffer() const
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{
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return isOffer_;
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}
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inline bool
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STPathElement::isAccount() const
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{
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return !isOffer();
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}
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inline bool
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STPathElement::isType(Type const& pe) const
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{
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return (type_ & pe) != 0u;
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}
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inline bool
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STPathElement::hasIssuer() const
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{
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return isType(STPathElement::TypeIssuer);
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}
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inline bool
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STPathElement::hasCurrency() const
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{
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return isType(STPathElement::TypeCurrency);
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}
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inline bool
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STPathElement::hasMPT() const
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{
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return isType(STPathElement::TypeMpt);
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}
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inline bool
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STPathElement::hasAsset() const
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{
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return isType(STPathElement::TypeAsset);
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}
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inline bool
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STPathElement::isNone() const
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{
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return getNodeType() == STPathElement::TypeNone;
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}
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// Nodes are either an account ID or a offer prefix. Offer prefixs denote a
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// class of offers.
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inline AccountID const&
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STPathElement::getAccountID() const
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{
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return accountID_;
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}
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inline PathAsset const&
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STPathElement::getPathAsset() const
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{
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return assetID_;
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}
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inline Currency const&
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STPathElement::getCurrency() const
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{
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return assetID_.get<Currency>();
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}
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inline MPTID const&
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STPathElement::getMPTID() const
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{
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return assetID_.get<MPTID>();
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}
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inline AccountID const&
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STPathElement::getIssuerID() const
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{
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return issuerID_;
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}
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inline bool
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STPathElement::operator==(STPathElement const& t) const
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{
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return (type_ & TypeAccount) == (t.type_ & TypeAccount) && hashValue_ == t.hashValue_ &&
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accountID_ == t.accountID_ && assetID_ == t.assetID_ && issuerID_ == t.issuerID_;
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}
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inline bool
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STPathElement::operator!=(STPathElement const& t) const
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{
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return !operator==(t);
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}
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// ------------ STPath ------------
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inline STPath::STPath(std::vector<STPathElement> p) : path_(std::move(p))
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{
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}
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inline std::vector<STPathElement>::size_type
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STPath::size() const
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{
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return path_.size();
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}
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inline bool
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STPath::empty() const
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{
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return path_.empty();
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}
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inline void
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STPath::pushBack(STPathElement const& e)
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{
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path_.push_back(e);
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}
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template <typename... Args>
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inline void
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STPath::emplaceBack(Args&&... args)
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{
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path_.emplace_back(std::forward<Args>(args)...);
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}
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inline std::vector<STPathElement>::const_iterator
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STPath::begin() const
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{
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return path_.begin();
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}
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inline std::vector<STPathElement>::const_iterator
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STPath::end() const
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{
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return path_.end();
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}
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inline bool
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STPath::operator==(STPath const& t) const
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{
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return path_ == t.path_;
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}
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inline std::vector<STPathElement>::const_reference
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STPath::back() const
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{
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return path_.back();
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}
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inline std::vector<STPathElement>::const_reference
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STPath::front() const
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{
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return path_.front();
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}
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inline STPathElement&
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STPath::operator[](int i)
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{
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return path_[i];
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}
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inline STPathElement const&
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STPath::operator[](int i) const
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{
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return path_[i];
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}
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inline void
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STPath::reserve(size_t s)
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{
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path_.reserve(s);
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}
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// ------------ STPathSet ------------
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inline STPathSet::STPathSet(SField const& n) : STBase(n)
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{
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}
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// std::vector like interface:
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inline std::vector<STPath>::const_reference
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STPathSet::operator[](std::vector<STPath>::size_type n) const
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{
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return value_[n];
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}
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inline std::vector<STPath>::reference
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STPathSet::operator[](std::vector<STPath>::size_type n)
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{
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return value_[n];
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}
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inline std::vector<STPath>::const_iterator
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STPathSet::begin() const
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{
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return value_.begin();
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}
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inline std::vector<STPath>::const_iterator
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STPathSet::end() const
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{
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return value_.end();
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}
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inline std::vector<STPath>::size_type
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STPathSet::size() const
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{
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return value_.size();
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}
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inline bool
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STPathSet::empty() const
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{
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return value_.empty();
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}
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inline void
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STPathSet::pushBack(STPath const& e)
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{
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value_.push_back(e);
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}
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template <typename... Args>
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inline void
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STPathSet::emplaceBack(Args&&... args)
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{
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value_.emplace_back(std::forward<Args>(args)...);
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}
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} // namespace xrpl
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