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include/xrpl/protocol/STPathSet.h
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523
include/xrpl/protocol/STPathSet.h
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//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#ifndef RIPPLE_PROTOCOL_STPATHSET_H_INCLUDED
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#define RIPPLE_PROTOCOL_STPATHSET_H_INCLUDED
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#include <ripple/basics/CountedObject.h>
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#include <ripple/json/json_value.h>
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#include <ripple/protocol/SField.h>
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#include <ripple/protocol/STBase.h>
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#include <ripple/protocol/UintTypes.h>
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#include <cassert>
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#include <cstddef>
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#include <optional>
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namespace ripple {
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class STPathElement final : public CountedObject<STPathElement>
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{
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unsigned int mType;
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AccountID mAccountID;
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Currency mCurrencyID;
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AccountID mIssuerID;
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bool is_offer_;
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std::size_t hash_value_;
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public:
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enum Type {
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typeNone = 0x00,
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typeAccount =
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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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typeBoundary = 0xFF, // Boundary between alternate paths.
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typeAll = typeAccount | typeCurrency | typeIssuer,
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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<Currency> const& currency,
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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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Currency const& currency,
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AccountID const& issuer,
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bool forceCurrency = false);
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STPathElement(
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unsigned int uType,
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AccountID const& account,
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Currency const& currency,
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AccountID const& issuer);
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auto
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getNodeType() const;
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bool
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isOffer() const;
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bool
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isAccount() const;
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bool
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hasIssuer() const;
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bool
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hasCurrency() const;
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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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AccountID const&
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getAccountID() const;
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Currency const&
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getCurrency() const;
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AccountID const&
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getIssuerID() const;
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bool
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operator==(const STPathElement& t) const;
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bool
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operator!=(const STPathElement& t) const;
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private:
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static std::size_t
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get_hash(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> mPath;
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public:
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STPath() = default;
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STPath(std::vector<STPathElement> p);
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std::vector<STPathElement>::size_type
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size() const;
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bool
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empty() const;
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void
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push_back(STPathElement const& e);
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template <typename... Args>
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void
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emplace_back(Args&&... args);
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bool
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hasSeen(
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AccountID const& account,
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Currency const& currency,
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AccountID const& issuer) const;
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Json::Value getJson(JsonOptions) const;
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std::vector<STPathElement>::const_iterator
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begin() const;
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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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std::vector<STPathElement>::const_reference
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back() const;
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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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const STPathElement&
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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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Json::Value getJson(JsonOptions) const override;
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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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bool
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isEquivalent(const STBase& t) const override;
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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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std::vector<STPath>::const_iterator
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begin() const;
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std::vector<STPath>::const_iterator
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end() const;
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std::vector<STPath>::size_type
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size() const;
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bool
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empty() const;
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void
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push_back(STPath const& e);
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template <typename... Args>
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void
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emplace_back(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() : mType(typeNone), is_offer_(true)
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{
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hash_value_ = get_hash(*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<Currency> const& currency,
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std::optional<AccountID> const& issuer)
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: mType(typeNone)
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{
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if (!account)
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{
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is_offer_ = true;
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}
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else
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{
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is_offer_ = false;
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mAccountID = *account;
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mType |= typeAccount;
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assert(mAccountID != noAccount());
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}
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if (currency)
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{
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mCurrencyID = *currency;
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mType |= typeCurrency;
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}
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if (issuer)
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{
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mIssuerID = *issuer;
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mType |= typeIssuer;
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assert(mIssuerID != noAccount());
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}
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hash_value_ = get_hash(*this);
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}
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inline STPathElement::STPathElement(
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AccountID const& account,
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Currency const& currency,
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AccountID const& issuer,
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bool forceCurrency)
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: mType(typeNone)
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, mAccountID(account)
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, mCurrencyID(currency)
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, mIssuerID(issuer)
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, is_offer_(isXRP(mAccountID))
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{
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if (!is_offer_)
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mType |= typeAccount;
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if (forceCurrency || !isXRP(currency))
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mType |= typeCurrency;
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if (!isXRP(issuer))
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mType |= typeIssuer;
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hash_value_ = get_hash(*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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Currency const& currency,
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AccountID const& issuer)
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: mType(uType)
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, mAccountID(account)
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, mCurrencyID(currency)
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, mIssuerID(issuer)
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, is_offer_(isXRP(mAccountID))
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{
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hash_value_ = get_hash(*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 mType;
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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 is_offer_;
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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::hasIssuer() const
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{
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return getNodeType() & 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 getNodeType() & STPathElement::typeCurrency;
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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 mAccountID;
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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 mCurrencyID;
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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 mIssuerID;
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}
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inline bool
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STPathElement::operator==(const STPathElement& t) const
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{
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return (mType & typeAccount) == (t.mType & typeAccount) &&
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hash_value_ == t.hash_value_ && mAccountID == t.mAccountID &&
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mCurrencyID == t.mCurrencyID && mIssuerID == t.mIssuerID;
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}
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inline bool
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STPathElement::operator!=(const STPathElement& 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) : mPath(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 mPath.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 mPath.empty();
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}
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inline void
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STPath::push_back(STPathElement const& e)
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{
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mPath.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::emplace_back(Args&&... args)
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{
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mPath.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 mPath.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 mPath.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 mPath == t.mPath;
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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 mPath.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 mPath.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 mPath[i];
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}
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inline const STPathElement&
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STPath::operator[](int i) const
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{
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return mPath[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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mPath.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::push_back(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::emplace_back(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 ripple
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#endif
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Block a user