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// Copyright (C) 2022 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include <QtProtobuf/qprotobufoneof.h>
QT_BEGIN_NAMESPACE
namespace QtProtobufPrivate {
/*!
\internal
\fn template<typename T, QtProtobuf::if_protobuf_type<T> = true> void QProtobufOneof::setValue(const T &value, int fieldNumber)
\fn template<typename T, QtProtobuf::if_protobuf_message<T> = true> void setValue(T &&value, int fieldNumber)
Stores the \a value into QProtobufOneof with corresponding \a
fieldNumber.
*/
/*!
\internal
\fn template <typename T, QtProtobuf::if_protobuf_non_message<T> = true> T QProtobufOneof::value() const
Returns the value of non-message protobuf type stored in the
QProtobufOneof object.
*/
/*!
\internal
\fn template <typename T, QtProtobuf::if_protobuf_message<T> = true> const T *value() const
Returns the pointer to a protobuf message that is stored inside the
QProtobufOneof object.
*/
/*!
\internal
\fn template <typename T, QtProtobuf::if_protobuf_message<T> = true> T *value()
Returns the pointer to a protobuf message that is stored inside the
QProtobufOneof object. Mutable overload.
*/
/*!
\internal
\fn template <typename T, QtProtobuf::if_protobuf_non_message<T> = true> bool isEqual(const T &otherValue, int fieldNumber) const
Compares the data stored in QProtobufOneof with the value/fieldNumber
pair.
*/
/*!
\internal
\fn template <typename T, QtProtobuf::if_protobuf_message<T> = true> bool isEqual(const T &otherValue, int fieldNumber) const
Compares the data stored in QProtobufOneof with the value/fieldNumber
pair.
*/
class QProtobufOneofPrivate final
{
public:
QVariant value;
int fieldNumber = QtProtobuf::InvalidFieldNumber;
};
/*!
\internal
\brief The default constructor, constructs uninitialized QProtobufOneof.
*/
QProtobufOneof::QProtobufOneof() : d_ptr(new QProtobufOneofPrivate) { }
/*!
\internal
Constructs a copy of other. This operation takes constant time, because
QProtobufOneof is implicitly shared. If a shared instance is modified, it
will be copied (copy-on-write).
*/
QProtobufOneof::QProtobufOneof(const QProtobufOneof &other)
: d_ptr(new QProtobufOneofPrivate(*other.d_ptr))
{
}
/*!
\internal
Assigns other to this QProtobufOneof and returns a reference to this
QProtobufOneof.
*/
QProtobufOneof &QProtobufOneof::operator=(const QProtobufOneof &other)
{
if (this != &other)
*d_ptr = *other.d_ptr;
return *this;
}
/*!
\internal
\fn QProtobufOneof::QProtobufOneof(QProtobufOneof &&other) noexcept
Move-constructs a QProtobufOneof instance, making it point at the same
object that other was pointing to.
*/
/*!
\internal
\fn QProtobufOneof &QProtobufOneof::operator=(QProtobufOneof &&other) noexcept
Move-assigns other to this QProtobufOneof instance.
*/
/*!
\internal
Checks if values stored in oneof is equal \a other.
*/
bool comparesEqual(const QProtobufOneof &lhs, const QProtobufOneof &rhs) noexcept
{
if (lhs.d_ptr == rhs.d_ptr)
return true;
return lhs.d_func()->fieldNumber == rhs.d_func()->fieldNumber
&& lhs.d_func()->value == rhs.d_func()->value;
}
/*!
\internal
Destroys the oneof.
*/
QProtobufOneof::~QProtobufOneof()
{
delete d_ptr;
}
const QVariant &QProtobufOneof::rawValue() const
{
return d_ptr->value;
}
/*
Setting of the QProtobufOneof data makes sense only using
value/fieldNumber pair. Instead of non-constant dereferencing of the
QSharedDataPointer we simply rewrite it, that keep its copies untouched but
creates a new data with the provided values. This avoids redundant data
copying when updating the data.
*/
void QProtobufOneof::setValue(const QVariant &value, int fieldNumber)
{
d_ptr->value = value;
d_ptr->fieldNumber = fieldNumber;
}
/*!
\internal
Returns \c true if QProtobufOneof holds the field with \a fieldNumber.
*/
bool QProtobufOneof::holdsField(int fieldNumber) const
{
Q_D(const QProtobufOneof);
return d->fieldNumber == fieldNumber && fieldNumber != QtProtobuf::InvalidFieldNumber
&& !d->value.isNull();
}
/*!
\internal
Returns the number of a protobuf field that is stored in the object
*/
int QProtobufOneof::fieldNumber() const
{
Q_D(const QProtobufOneof);
return d->fieldNumber;
}
/*!
\internal
Ensures that underlying QVariant holds the required QMetaType. Initializes variant with the
default-constructed QMetaType if QVariant holds the different type.
*/
void QProtobufOneof::ensureRawValue(QMetaType metaType)
{
Q_D(QProtobufOneof);
if (metaType != d->value.metaType())
d->value = QVariant::fromMetaType(metaType);
}
} // namespace QtProtobufPrivate
QT_END_NAMESPACE