Files
rippled/include/xrpl/protocol/STData.h
Denis Angell 5e8ecf6ff2 feature
2025-11-11 13:57:10 +01:00

309 lines
8.0 KiB
C++

//------------------------------------------------------------------------------
/*
This file is part of rippled: https://github.com/ripple/rippled
Copyright (c) 2023 Ripple Labs Inc.
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef RIPPLE_PROTOCOL_STDATA_H_INCLUDED
#define RIPPLE_PROTOCOL_STDATA_H_INCLUDED
#include <xrpl/basics/Buffer.h>
#include <xrpl/protocol/SField.h>
#include <xrpl/protocol/STAccount.h>
#include <xrpl/protocol/STAmount.h>
#include <xrpl/protocol/STBase.h>
#include <xrpl/protocol/STBitString.h>
#include <xrpl/protocol/STInteger.h>
#include <xrpl/protocol/detail/STVar.h>
#include <cstdint>
#include <string>
#include <vector>
namespace ripple {
class STData final : public STBase
{
private:
using data_type = detail::STVar;
std::uint16_t inner_type_;
data_type data_;
bool default_{true};
public:
using value_type = STData; // Although not directly holding a single value
STData(SField const& n);
STData(SField const& n, unsigned char);
STData(SField const& n, std::uint16_t);
STData(SField const& n, std::uint32_t);
STData(SField const& n, std::uint64_t);
STData(SField const& n, uint128 const&);
STData(SField const& n, uint160 const&);
STData(SField const& n, uint192 const&);
STData(SField const& n, uint256 const&);
STData(SField const& n, Blob const&);
STData(SField const& n, Slice const&);
STData(SField const& n, AccountID const&);
STData(SField const& n, STAmount const&);
STData(SField const& n, STIssue const&);
STData(SField const& n, STCurrency const&);
STData(SField const& n, STNumber const&);
STData(SerialIter& sit, SField const& name);
std::size_t
size() const;
SerializedTypeID
getSType() const override;
std::string
getInnerTypeString() const;
std::string
getText() const override;
Json::Value getJson(JsonOptions) const override;
void
add(Serializer& s) const override;
bool
isEquivalent(STBase const& t) const override;
bool
isDefault() const override;
SerializedTypeID
getInnerSType() const noexcept;
STBase*
makeFieldPresent();
void
setFieldU8(unsigned char);
void setFieldU16(std::uint16_t);
void setFieldU32(std::uint32_t);
void setFieldU64(std::uint64_t);
void
setFieldH128(uint128 const&);
void
setFieldH160(uint160 const&);
void
setFieldH192(uint192 const&);
void
setFieldH256(uint256 const&);
void
setFieldVL(Blob const&);
void
setFieldVL(Slice const&);
void
setAccountID(AccountID const&);
void
setFieldAmount(STAmount const&);
void
setIssue(STIssue const&);
void
setCurrency(STCurrency const&);
void
setFieldNumber(STNumber const&);
unsigned char
getFieldU8() const;
std::uint16_t
getFieldU16() const;
std::uint32_t
getFieldU32() const;
std::uint64_t
getFieldU64() const;
uint128
getFieldH128() const;
uint160
getFieldH160() const;
uint192
getFieldH192() const;
uint256
getFieldH256() const;
Blob
getFieldVL() const;
AccountID
getAccountID() const;
STAmount const&
getFieldAmount() const;
STIssue
getFieldIssue() const;
STCurrency
getFieldCurrency() const;
STNumber
getFieldNumber() const;
private:
STBase*
copy(std::size_t n, void* buf) const override;
STBase*
move(std::size_t n, void* buf) override;
friend class detail::STVar;
// Implementation for getting (most) fields that return by value.
//
// The remove_cv and remove_reference are necessitated by the STBitString
// types. Their value() returns by const ref. We return those types
// by value.
template <
typename T,
typename V = typename std::remove_cv<typename std::remove_reference<
decltype(std::declval<T>().value())>::type>::type>
V
getFieldByValue() const;
// Implementations for getting (most) fields that return by const reference.
//
// If an absent optional field is deserialized we don't have anything
// obvious to return. So we insist on having the call provide an
// 'empty' value we return in that circumstance.
template <typename T, typename V>
V const&
getFieldByConstRef(V const& empty) const;
// Implementation for setting most fields with a setValue() method.
template <typename T, typename V>
void
setFieldUsingSetValue(V value);
// Implementation for setting fields using assignment
template <typename T>
void
setFieldUsingAssignment(T const& value);
};
//------------------------------------------------------------------------------
// Implementation
//------------------------------------------------------------------------------
inline SerializedTypeID
STData::getInnerSType() const noexcept
{
return static_cast<SerializedTypeID>(inner_type_);
}
template <typename T, typename V>
V
STData::getFieldByValue() const
{
STBase const* rf = &data_.get();
// if (!rf)
// throwFieldNotFound(getFName());
SerializedTypeID id = rf->getSType();
if (id == STI_NOTPRESENT)
Throw<std::runtime_error>("Field not present");
T const* cf = dynamic_cast<T const*>(rf);
if (!cf)
Throw<std::runtime_error>("Wrong field type");
return cf->value();
}
// Implementations for getting (most) fields that return by const reference.
//
// If an absent optional field is deserialized we don't have anything
// obvious to return. So we insist on having the call provide an
// 'empty' value we return in that circumstance.
template <typename T, typename V>
V const&
STData::getFieldByConstRef(V const& empty) const
{
STBase const* rf = &data_.get();
// if (!rf)
// throwFieldNotFound(field);
SerializedTypeID id = rf->getSType();
if (id == STI_NOTPRESENT)
return empty; // optional field not present
T const* cf = dynamic_cast<T const*>(rf);
if (!cf)
Throw<std::runtime_error>("Wrong field type");
return *cf;
}
// Implementation for setting most fields with a setValue() method.
template <typename T, typename V>
void
STData::setFieldUsingSetValue(V value)
{
static_assert(!std::is_lvalue_reference<V>::value, "");
STBase* rf = &data_.get();
// if (!rf)
// throwFieldNotFound(field);
if (rf->getSType() == STI_NOTPRESENT)
rf = makeFieldPresent();
T* cf = dynamic_cast<T*>(rf);
if (!cf)
Throw<std::runtime_error>("Wrong field type");
cf->setValue(std::move(value));
}
// Implementation for setting fields using assignment
template <typename T>
void
STData::setFieldUsingAssignment(T const& value)
{
STBase* rf = &data_.get();
// if (!rf)
// throwFieldNotFound(field);
// if (rf->getSType() == STI_NOTPRESENT)
// rf = makeFieldPresent(field);
T* cf = dynamic_cast<T*>(rf);
if (!cf)
Throw<std::runtime_error>("Wrong field type");
(*cf) = value;
}
//------------------------------------------------------------------------------
//
// Creation
//
//------------------------------------------------------------------------------
STData
dataFromJson(SField const& field, Json::Value const& value);
} // namespace ripple
#endif