| /**************************************************************************** |
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| ** Copyright (C) 2016 The Qt Company Ltd. |
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| |
| // |
| // 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 |