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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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 https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
**
****************************************************************************/
//
// 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.
//
#ifndef QJSVALUE_P_H
#define QJSVALUE_P_H
#include <qjsvalue.h>
#include <private/qtqmlglobal_p.h>
#include <private/qv4value_p.h>
#include <private/qv4string_p.h>
#include <private/qv4engine_p.h>
#include <private/qflagpointer_p.h>
#include <private/qv4mm_p.h>
#include <private/qv4persistent_p.h>
#include <QtCore/qthread.h>
QT_BEGIN_NAMESPACE
class Q_AUTOTEST_EXPORT QJSValuePrivate
{
public:
static inline QV4::Value *getValue(const QJSValue *jsval)
{
if (jsval->d & 3)
return nullptr;
return reinterpret_cast<QV4::Value *>(jsval->d);
}
static inline QVariant *getVariant(const QJSValue *jsval)
{
if (jsval->d & 1)
return reinterpret_cast<QVariant *>(jsval->d & ~3);
return nullptr;
}
static inline void setRawValue(QJSValue *jsval, QV4::Value *v)
{
jsval->d = reinterpret_cast<quintptr>(v);
}
static inline void setVariant(QJSValue *jsval, const QVariant &v) {
QVariant *val = new QVariant(v);
jsval->d = reinterpret_cast<quintptr>(val) | 1;
}
static inline void setValue(QJSValue *jsval, QV4::ExecutionEngine *engine, const QV4::Value &v) {
QV4::Value *value = engine->memoryManager->m_persistentValues->allocate();
*value = v;
jsval->d = reinterpret_cast<quintptr>(value);
}
static inline void setValue(QJSValue *jsval, QV4::ExecutionEngine *engine, QV4::ReturnedValue v) {
QV4::Value *value = engine->memoryManager->m_persistentValues->allocate();
*value = v;
jsval->d = reinterpret_cast<quintptr>(value);
}
static QV4::ReturnedValue convertedToValue(QV4::ExecutionEngine *e, const QJSValue &jsval)
{
QV4::Value *v = getValue(&jsval);
if (!v) {
QVariant *variant = getVariant(&jsval);
v = e->memoryManager->m_persistentValues->allocate();
*v = variant ? e->fromVariant(*variant) : QV4::Encode::undefined();
jsval.d = reinterpret_cast<quintptr>(v);
delete variant;
}
if (QV4::PersistentValueStorage::getEngine(v) != e) {
qWarning("JSValue can't be reassigned to another engine.");
return QV4::Encode::undefined();
}
return v->asReturnedValue();
}
static QV4::Value *valueForData(const QJSValue *jsval, QV4::Value *scratch)
{
QV4::Value *v = getValue(jsval);
if (v)
return v;
v = scratch;
QVariant *variant = getVariant(jsval);
if (!variant) {
*v = QV4::Encode::undefined();
return v;
}
switch (variant->userType()) {
case QMetaType::UnknownType:
case QMetaType::Void:
*v = QV4::Encode::undefined();
break;
case QMetaType::Nullptr:
case QMetaType::VoidStar:
*v = QV4::Encode::null();
break;
case QMetaType::Bool:
*v = QV4::Encode(variant->toBool());
break;
case QMetaType::Double:
*v = QV4::Encode(variant->toDouble());
break;
case QMetaType::Int:
case QMetaType::Short:
case QMetaType::UShort:
case QMetaType::Char:
case QMetaType::UChar:
*v = QV4::Encode(variant->toInt());
break;
case QMetaType::UInt:
*v = QV4::Encode(variant->toUInt());
break;
default:
return nullptr;
}
return v;
}
static QV4::ExecutionEngine *engine(const QJSValue *jsval) {
QV4::Value *v = getValue(jsval);
return v ? QV4::PersistentValueStorage::getEngine(v) : nullptr;
}
static inline bool checkEngine(QV4::ExecutionEngine *e, const QJSValue &jsval) {
QV4::ExecutionEngine *v4 = engine(&jsval);
return !v4 || v4 == e;
}
static inline void free(QJSValue *jsval) {
if (QV4::Value *v = QJSValuePrivate::getValue(jsval)) {
if (QV4::ExecutionEngine *e = engine(jsval)) {
if (QJSEngine *jsEngine = e->jsEngine()) {
if (jsEngine->thread() != QThread::currentThread()) {
QMetaObject::invokeMethod(
jsEngine, [v](){ QV4::PersistentValueStorage::free(v); });
return;
}
}
}
QV4::PersistentValueStorage::free(v);
} else if (QVariant *v = QJSValuePrivate::getVariant(jsval)) {
delete v;
}
}
};
QT_END_NAMESPACE
#endif
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