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// Copyright (C) 2024 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
#ifndef QV4QMETAOBJECTWRAPPER_P_H
#define QV4QMETAOBJECTWRAPPER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include <private/qv4functionobject_p.h>
#include <private/qv4value_p.h>
#include <QtCore/qmetaobject.h>
QT_BEGIN_NAMESPACE
class QQmlPropertyData;
namespace QV4 {
namespace Heap {
struct QMetaObjectWrapper : FunctionObject
{
void init(const QMetaObject *metaObject);
void destroy();
const QMetaObject *metaObject() const { return m_metaObject; }
QMetaType metaType() const
{
const QMetaType type = m_metaObject->metaType();
if (type.flags() & QMetaType::IsGadget)
return type;
// QObject* is our best guess because we can't get from a metatype to
// the metatype of its pointer.
return QMetaType::fromType<QObject *>();
}
const QQmlPropertyData *ensureConstructorsCache(
const QMetaObject *metaObject, QMetaType metaType)
{
Q_ASSERT(metaObject);
if (!m_constructors)
m_constructors = createConstructors(metaObject, metaType);
return m_constructors;
}
static const QQmlPropertyData *createConstructors(
const QMetaObject *metaObject, QMetaType metaType)
{
Q_ASSERT(metaObject);
const int count = metaObject->constructorCount();
if (count == 0)
return nullptr;
QQmlPropertyData *constructors = new QQmlPropertyData[count];
for (int i = 0; i < count; ++i) {
QMetaMethod method = metaObject->constructor(i);
QQmlPropertyData &d = constructors[i];
d.load(method);
d.setPropType(metaType);
d.setCoreIndex(i);
}
return constructors;
}
private:
const QMetaObject *m_metaObject;
const QQmlPropertyData *m_constructors;
};
} // namespace Heap
struct Q_QML_EXPORT QMetaObjectWrapper : public FunctionObject
{
V4_OBJECT2(QMetaObjectWrapper, FunctionObject)
V4_NEEDS_DESTROY
static ReturnedValue create(ExecutionEngine *engine, const QMetaObject* metaObject);
const QMetaObject *metaObject() const { return d()->metaObject(); }
template<typename HeapObject>
ReturnedValue static construct(HeapObject *d, const Value *argv, int argc)
{
const QMetaObject *mo = d->metaObject();
return constructInternal(
mo, d->ensureConstructorsCache(mo, d->metaType()), d, argv, argc);
}
protected:
static ReturnedValue virtualCallAsConstructor(
const FunctionObject *, const Value *argv, int argc, const Value *);
static bool virtualIsEqualTo(Managed *a, Managed *b);
private:
void init(ExecutionEngine *engine);
static ReturnedValue constructInternal(
const QMetaObject *mo, const QQmlPropertyData *constructors, Heap::FunctionObject *d,
const Value *argv, int argc);
};
} // namespace QV4
QT_END_NAMESPACE
#endif // QV4QMETAOBJECTWRAPPER_P_H
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