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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qv4variantobject_p.h"
#include "qv4functionobject_p.h"
#include "qv4objectproto_p.h"
#include <private/qqmlvaluetypewrapper_p.h>
#include <private/qv8engine_p.h>
QT_BEGIN_NAMESPACE
using namespace QV4;
DEFINE_OBJECT_VTABLE(VariantObject);
Heap::VariantObject::VariantObject(QV4::ExecutionEngine *engine, const QVariant &value)
: Heap::Object(engine->emptyClass, engine->variantPrototype.asObject())
{
data = value;
if (isScarce())
engine->scarceResources.insert(this);
}
bool VariantObject::Data::isScarce() const
{
QVariant::Type t = data.type();
return t == QVariant::Pixmap || t == QVariant::Image;
}
bool VariantObject::isEqualTo(Managed *m, Managed *other)
{
Q_ASSERT(m->as<QV4::VariantObject>());
QV4::VariantObject *lv = static_cast<QV4::VariantObject *>(m);
if (QV4::VariantObject *rv = other->as<QV4::VariantObject>())
return lv->d()->data == rv->d()->data;
if (QV4::QQmlValueTypeWrapper *v = other->as<QQmlValueTypeWrapper>())
return v->isEqual(lv->d()->data);
return false;
}
void VariantObject::addVmePropertyReference()
{
if (d()->isScarce() && ++d()->vmePropertyReferenceCount == 1) {
// remove from the ep->scarceResources list
// since it is now no longer eligible to be
// released automatically by the engine.
d()->node.remove();
}
}
void VariantObject::removeVmePropertyReference()
{
if (d()->isScarce() && --d()->vmePropertyReferenceCount == 0) {
// and add to the ep->scarceResources list
// since it is now eligible to be released
// automatically by the engine.
internalClass()->engine->scarceResources.insert(d());
}
}
void VariantPrototype::init()
{
defineDefaultProperty(QStringLiteral("preserve"), method_preserve, 0);
defineDefaultProperty(QStringLiteral("destroy"), method_destroy, 0);
defineDefaultProperty(engine()->id_valueOf, method_valueOf, 0);
defineDefaultProperty(engine()->id_toString, method_toString, 0);
}
QV4::ReturnedValue VariantPrototype::method_preserve(CallContext *ctx)
{
Scope scope(ctx);
Scoped<VariantObject> o(scope, ctx->thisObject().as<QV4::VariantObject>());
if (o && o->d()->isScarce())
o->d()->node.remove();
return Encode::undefined();
}
QV4::ReturnedValue VariantPrototype::method_destroy(CallContext *ctx)
{
Scope scope(ctx);
Scoped<VariantObject> o(scope, ctx->thisObject().as<QV4::VariantObject>());
if (o) {
if (o->d()->isScarce())
o->d()->node.remove();
o->d()->data = QVariant();
}
return Encode::undefined();
}
QV4::ReturnedValue VariantPrototype::method_toString(CallContext *ctx)
{
Scope scope(ctx);
Scoped<VariantObject> o(scope, ctx->thisObject().as<QV4::VariantObject>());
if (!o)
return Encode::undefined();
QString result = o->d()->data.toString();
if (result.isEmpty() && !o->d()->data.canConvert(QVariant::String))
result = QString::fromLatin1("QVariant(%0)").arg(QString::fromLatin1(o->d()->data.typeName()));
return Encode(ctx->d()->engine->newString(result));
}
QV4::ReturnedValue VariantPrototype::method_valueOf(CallContext *ctx)
{
Scope scope(ctx);
Scoped<VariantObject> o(scope, ctx->thisObject().as<QV4::VariantObject>());
if (o) {
QVariant v = o->d()->data;
switch (v.type()) {
case QVariant::Invalid:
return Encode::undefined();
case QVariant::String:
return Encode(ctx->d()->engine->newString(v.toString()));
case QVariant::Int:
return Encode(v.toInt());
case QVariant::Double:
case QVariant::UInt:
return Encode(v.toDouble());
case QVariant::Bool:
return Encode(v.toBool());
default:
if (QMetaType::typeFlags(v.userType()) & QMetaType::IsEnumeration)
return Encode(v.toInt());
break;
}
}
return ctx->thisObject().asReturnedValue();
}
QT_END_NAMESPACE
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