mirror of
https://github.com/XRPLF/rippled.git
synced 2026-06-02 16:26:48 +00:00
692070dbf1
- 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. - (Not all tests are fixed yet.)
94 lines
2.0 KiB
C++
94 lines
2.0 KiB
C++
#ifndef XRPL_PROTOCOL_STNUMBER_H_INCLUDED
|
|
#define XRPL_PROTOCOL_STNUMBER_H_INCLUDED
|
|
|
|
#include <xrpl/basics/CountedObject.h>
|
|
#include <xrpl/basics/Number.h>
|
|
#include <xrpl/protocol/STBase.h>
|
|
#include <xrpl/protocol/STTakesAsset.h>
|
|
|
|
#include <ostream>
|
|
|
|
namespace ripple {
|
|
|
|
/**
|
|
* A serializable number.
|
|
*
|
|
* This type is-a `Number`, and can be used everywhere that is accepted.
|
|
* This type simply integrates `Number` with the serialization framework,
|
|
* letting it be used for fields in ledger entries and transactions.
|
|
* It is effectively an `STAmount` sans `Asset`:
|
|
* it can represent a value of any token type (XRP, IOU, or MPT)
|
|
* without paying the storage cost of duplicating asset information
|
|
* that may be deduced from the context.
|
|
*/
|
|
class STNumber : public STTakesAsset, public CountedObject<STNumber>
|
|
{
|
|
private:
|
|
Number value_;
|
|
|
|
public:
|
|
using value_type = Number;
|
|
|
|
STNumber() = default;
|
|
explicit STNumber(SField const& field, Number const& value = Number());
|
|
STNumber(SerialIter& sit, SField const& field);
|
|
|
|
SerializedTypeID
|
|
getSType() const override;
|
|
std::string
|
|
getText() const override;
|
|
void
|
|
add(Serializer& s) const override;
|
|
|
|
Number const&
|
|
value() const;
|
|
void
|
|
setValue(Number const& v);
|
|
|
|
STNumber&
|
|
operator=(Number const& rhs)
|
|
{
|
|
setValue(rhs);
|
|
return *this;
|
|
}
|
|
|
|
bool
|
|
isEquivalent(STBase const& t) const override;
|
|
bool
|
|
isDefault() const override;
|
|
|
|
void
|
|
associateAsset(Asset const& a) override;
|
|
|
|
operator Number() const
|
|
{
|
|
return value_;
|
|
}
|
|
|
|
private:
|
|
STBase*
|
|
copy(std::size_t n, void* buf) const override;
|
|
STBase*
|
|
move(std::size_t n, void* buf) override;
|
|
};
|
|
|
|
std::ostream&
|
|
operator<<(std::ostream& out, STNumber const& rhs);
|
|
|
|
struct NumberParts
|
|
{
|
|
std::uint64_t mantissa = 0;
|
|
int exponent = 0;
|
|
bool negative = false;
|
|
};
|
|
|
|
NumberParts
|
|
partsFromString(std::string const& number);
|
|
|
|
STNumber
|
|
numberFromJson(SField const& field, Json::Value const& value);
|
|
|
|
} // namespace ripple
|
|
|
|
#endif
|