mirror of
https://github.com/XRPLF/rippled.git
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33f4c92b61
- Refactor Number internals away from int64 to uint64 & a sign flag
- ctors and accessors use `rep`. Very few things expose
`internalrep`.
- An exception is "unchecked" and the new "normalized", which explicitly
take an internalrep. But with those special control flags, it's easier
to distinguish and control when they are used.
- For now, skip the larger mantissas in AMM transactions and tests
- Remove trailing zeros from scientific notation Number strings
- Update tests. This has the happy side effect of making some of the string
representations _more_ consistent between the small and large
mantissa ranges.
- Add semi-automatic rounding of STNumbers based on Asset types
- Create a new SField metadata enum, sMD_NeedsAsset, which indicates
the field should be associated with an Asset so it can be rounded.
- Add a new STTakesAsset intermediate class to handle the Asset
association to a derived ST class. Currently only used in STNumber,
but could be used by other types in the future.
- Add "associateAsset" which takes an SLE and an Asset, finds the
sMD_NeedsAsset fields, and associates the Asset to them. In the case
of STNumber, that both stores the Asset, and rounds the value
immediately.
- Transactors only need to add a call to associateAsset _after_ all of
the STNumbers have been set. Unfortunately, the inner workings of
STObject do not do the association correctly with uninitialized
fields.
- When serializing an STNumber that has an Asset, round it before
serializing.
- Add an override of roundToAsset, which rounds a Number value in place
to an Asset, but without any additional scale.
- Update and fix a bunch of Loan-related tests to accommodate the
expanded Number class.
---------
Co-authored-by: Vito <5780819+Tapanito@users.noreply.github.com>
122 lines
2.2 KiB
C++
122 lines
2.2 KiB
C++
#ifndef XRPL_PROTOCOL_ISSUE_H_INCLUDED
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#define XRPL_PROTOCOL_ISSUE_H_INCLUDED
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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/UintTypes.h>
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namespace xrpl {
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/** A currency issued by an account.
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@see Currency, AccountID, Issue, Book
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*/
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class Issue
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{
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public:
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Currency currency{};
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AccountID account{};
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Issue() = default;
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Issue(Currency const& c, AccountID const& a) : currency(c), account(a)
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{
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}
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AccountID const&
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getIssuer() const
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{
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return account;
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}
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std::string
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getText() const;
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void
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setJson(Json::Value& jv) const;
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bool
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native() const;
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bool
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integral() const;
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friend constexpr std::weak_ordering
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operator<=>(Issue const& lhs, Issue const& rhs);
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};
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bool
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isConsistent(Issue const& ac);
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std::string
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to_string(Issue const& ac);
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Json::Value
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to_json(Issue const& is);
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Issue
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issueFromJson(Json::Value const& v);
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std::ostream&
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operator<<(std::ostream& os, Issue const& x);
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template <class Hasher>
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void
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hash_append(Hasher& h, Issue const& r)
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{
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using beast::hash_append;
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hash_append(h, r.currency, r.account);
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}
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/** Equality comparison. */
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/** @{ */
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[[nodiscard]] inline constexpr bool
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operator==(Issue const& lhs, Issue const& rhs)
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{
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return (lhs.currency == rhs.currency) &&
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(isXRP(lhs.currency) || lhs.account == rhs.account);
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}
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/** @} */
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/** Strict weak ordering. */
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/** @{ */
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[[nodiscard]] constexpr std::weak_ordering
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operator<=>(Issue const& lhs, Issue const& rhs)
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{
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if (auto const c{lhs.currency <=> rhs.currency}; c != 0)
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return c;
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if (isXRP(lhs.currency))
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return std::weak_ordering::equivalent;
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return (lhs.account <=> rhs.account);
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}
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/** @} */
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//------------------------------------------------------------------------------
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/** Returns an asset specifier that represents XRP. */
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inline Issue const&
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xrpIssue()
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{
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static Issue issue{xrpCurrency(), xrpAccount()};
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return issue;
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}
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/** Returns an asset specifier that represents no account and currency. */
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inline Issue const&
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noIssue()
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{
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static Issue issue{noCurrency(), noAccount()};
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return issue;
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}
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inline bool
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isXRP(Issue const& issue)
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{
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return issue.native();
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}
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} // namespace xrpl
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#endif
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