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// Copyright (C) 2016 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 "qqmllistwrapper_p.h"
#include <private/qqmllist_p.h>
#include <private/qv4objectproto_p.h>
#include <qv4objectiterator_p.h>
#include <private/qv4functionobject_p.h>
#include <private/qv4qobjectwrapper_p.h>
QT_BEGIN_NAMESPACE
using namespace QV4;
DEFINE_OBJECT_VTABLE(QmlListWrapper);
void Heap::QmlListWrapper::init()
{
Object::init();
object.init();
QV4::Scope scope(internalClass->engine);
QV4::ScopedObject o(scope, this);
o->setArrayType(Heap::ArrayData::Custom);
}
void Heap::QmlListWrapper::destroy()
{
object.destroy();
Object::destroy();
}
ReturnedValue QmlListWrapper::create(ExecutionEngine *engine, QObject *object, int propId, QMetaType propType)
{
if (!object || propId == -1)
return Encode::null();
Scope scope(engine);
Scoped<QmlListWrapper> r(scope, engine->memoryManager->allocate<QmlListWrapper>());
r->d()->object = object;
r->d()->propertyType = propType.iface();
void *args[] = { &r->d()->property(), nullptr };
QMetaObject::metacall(object, QMetaObject::ReadProperty, propId, args);
return r.asReturnedValue();
}
ReturnedValue QmlListWrapper::create(ExecutionEngine *engine, const QQmlListProperty<QObject> &prop, QMetaType propType)
{
Scope scope(engine);
Scoped<QmlListWrapper> r(scope, engine->memoryManager->allocate<QmlListWrapper>());
r->d()->object = prop.object;
r->d()->property() = prop;
r->d()->propertyType = propType.iface();
return r.asReturnedValue();
}
QVariant QmlListWrapper::toVariant() const
{
if (!d()->object)
return QVariant();
return QVariant::fromValue(toListReference());
}
QQmlListReference QmlListWrapper::toListReference() const
{
Heap::QmlListWrapper *wrapper = d();
return QQmlListReferencePrivate::init(wrapper->property(), QMetaType(wrapper->propertyType));
}
ReturnedValue QmlListWrapper::virtualGet(const Managed *m, PropertyKey id, const Value *receiver, bool *hasProperty)
{
Q_ASSERT(m->as<QmlListWrapper>());
const QmlListWrapper *w = static_cast<const QmlListWrapper *>(m);
QV4::ExecutionEngine *v4 = w->engine();
if (id.isArrayIndex()) {
uint index = id.asArrayIndex();
quint32 count = w->d()->property().count ? w->d()->property().count(&w->d()->property()) : 0;
if (index < count && w->d()->property().at) {
if (hasProperty)
*hasProperty = true;
return QV4::QObjectWrapper::wrap(v4, w->d()->property().at(&w->d()->property(), index));
}
if (hasProperty)
*hasProperty = false;
return Value::undefinedValue().asReturnedValue();
}
if (id.isString() && id == v4->id_length()->propertyKey()) {
if (hasProperty)
*hasProperty = true;
quint32 count = w->d()->property().count ? w->d()->property().count(&w->d()->property()) : 0;
return Value::fromUInt32(count).asReturnedValue();
}
return Object::virtualGet(m, id, receiver, hasProperty);
}
bool QmlListWrapper::virtualPut(Managed *m, PropertyKey id, const Value &value, Value *receiver)
{
Q_ASSERT(m->as<QmlListWrapper>());
const auto *w = static_cast<const QmlListWrapper *>(m);
QV4::ExecutionEngine *v4 = w->engine();
QQmlListProperty<QObject> *prop = &(w->d()->property());
if (id.isArrayIndex()) {
if (!prop->count || !prop->replace)
return false;
const uint index = id.asArrayIndex();
const int count = prop->count(prop);
if (count < 0 || index >= uint(count))
return false;
if (value.isNull()) {
prop->replace(prop, index, nullptr);
return true;
}
QV4::Scope scope(v4);
QV4::ScopedObject so(scope, value.toObject(scope.engine));
if (auto *wrapper = so->as<QV4::QObjectWrapper>()) {
prop->replace(prop, index, wrapper->object());
return true;
}
return false;
}
if (id.isString() && id == v4->id_length()->propertyKey()) {
if (!prop->count)
return false;
const quint32 count = prop->count(prop);
bool ok = false;
const uint newLength = value.asArrayLength(&ok);
if (!ok)
return false;
if (newLength == 0) {
if (!prop->clear)
return false;
prop->clear(prop);
return true;
}
if (newLength < count) {
if (!prop->removeLast)
return false;
for (uint i = newLength; i < count; ++i)
prop->removeLast(prop);
return true;
}
if (!prop->append)
return false;
for (uint i = count; i < newLength; ++i)
prop->append(prop, nullptr);
return true;
}
return Object::virtualPut(m, id, value, receiver);
}
struct QmlListWrapperOwnPropertyKeyIterator : ObjectOwnPropertyKeyIterator
{
~QmlListWrapperOwnPropertyKeyIterator() override = default;
PropertyKey next(const Object *o, Property *pd = nullptr, PropertyAttributes *attrs = nullptr) override;
};
PropertyKey QmlListWrapperOwnPropertyKeyIterator::next(const Object *o, Property *pd, PropertyAttributes *attrs)
{
const QmlListWrapper *w = static_cast<const QmlListWrapper *>(o);
quint32 count = w->d()->property().count ? w->d()->property().count(&w->d()->property()) : 0;
if (arrayIndex < count) {
uint index = arrayIndex;
++arrayIndex;
if (attrs)
*attrs = QV4::Attr_Data;
if (pd)
pd->value = QV4::QObjectWrapper::wrap(w->engine(), w->d()->property().at(&w->d()->property(), index));
return PropertyKey::fromArrayIndex(index);
}
return ObjectOwnPropertyKeyIterator::next(o, pd, attrs);
}
OwnPropertyKeyIterator *QmlListWrapper::virtualOwnPropertyKeys(const Object *m, Value *target)
{
*target = *m;
return new QmlListWrapperOwnPropertyKeyIterator;
}
void PropertyListPrototype::init(ExecutionEngine *)
{
defineDefaultProperty(QStringLiteral("push"), method_push, 1);
}
ReturnedValue PropertyListPrototype::method_push(const FunctionObject *b, const Value *thisObject, const Value *argv, int argc)
{
Scope scope(b);
ScopedObject instance(scope, thisObject->toObject(scope.engine));
if (!instance)
RETURN_UNDEFINED();
QmlListWrapper *w = instance->as<QmlListWrapper>();
if (!w)
RETURN_UNDEFINED();
QQmlListProperty<QObject> *property = &w->d()->property();
if (!property->append)
THROW_GENERIC_ERROR("List doesn't define an Append function");
QV4::ScopedObject so(scope);
for (int i = 0, ei = argc; i < ei; ++i)
{
if (argv[i].isNull()) {
property->append(property, nullptr);
} else {
so = argv[i].toObject(scope.engine);
if (QV4::QObjectWrapper *wrapper = so->as<QV4::QObjectWrapper>())
property->append(property, wrapper->object() );
}
}
return Encode::undefined();
}
QT_END_NAMESPACE
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