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| ****************************************************************************/ |
| #ifndef QV4VTABLE_P_H |
| #define QV4VTABLE_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 "qv4global_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QV4 { |
| |
| struct Lookup; |
| |
| struct Q_QML_PRIVATE_EXPORT OwnPropertyKeyIterator { |
| virtual ~OwnPropertyKeyIterator() = 0; |
| virtual PropertyKey next(const Object *o, Property *p = nullptr, PropertyAttributes *attrs = nullptr) = 0; |
| }; |
| |
| struct VTable |
| { |
| typedef void (*Destroy)(Heap::Base *); |
| typedef void (*MarkObjects)(Heap::Base *, MarkStack *markStack); |
| typedef bool (*IsEqualTo)(Managed *m, Managed *other); |
| |
| typedef ReturnedValue (*Get)(const Managed *, PropertyKey id, const Value *receiver, bool *hasProperty); |
| typedef bool (*Put)(Managed *, PropertyKey id, const Value &value, Value *receiver); |
| typedef bool (*DeleteProperty)(Managed *m, PropertyKey id); |
| typedef bool (*HasProperty)(const Managed *m, PropertyKey id); |
| typedef PropertyAttributes (*GetOwnProperty)(const Managed *m, PropertyKey id, Property *p); |
| typedef bool (*DefineOwnProperty)(Managed *m, PropertyKey id, const Property *p, PropertyAttributes attrs); |
| typedef bool (*IsExtensible)(const Managed *); |
| typedef bool (*PreventExtensions)(Managed *); |
| typedef Heap::Object *(*GetPrototypeOf)(const Managed *); |
| typedef bool (*SetPrototypeOf)(Managed *, const Object *); |
| typedef qint64 (*GetLength)(const Managed *m); |
| typedef OwnPropertyKeyIterator *(*OwnPropertyKeys)(const Object *m, Value *target); |
| typedef ReturnedValue (*InstanceOf)(const Object *typeObject, const Value &var); |
| |
| typedef ReturnedValue (*Call)(const FunctionObject *, const Value *thisObject, const Value *argv, int argc); |
| typedef ReturnedValue (*CallAsConstructor)(const FunctionObject *, const Value *argv, int argc, const Value *newTarget); |
| |
| typedef ReturnedValue (*ResolveLookupGetter)(const Object *, ExecutionEngine *, Lookup *); |
| typedef bool (*ResolveLookupSetter)(Object *, ExecutionEngine *, Lookup *, const Value &); |
| |
| const VTable * const parent; |
| quint16 inlinePropertyOffset; |
| quint16 nInlineProperties; |
| quint8 isExecutionContext; |
| quint8 isString; |
| quint8 isObject; |
| quint8 isFunctionObject; |
| quint8 isErrorObject; |
| quint8 isArrayData; |
| quint8 isStringOrSymbol; |
| quint8 type; |
| quint8 unused[4]; |
| const char *className; |
| |
| Destroy destroy; |
| MarkObjects markObjects; |
| IsEqualTo isEqualTo; |
| |
| Get get; |
| Put put; |
| DeleteProperty deleteProperty; |
| HasProperty hasProperty; |
| GetOwnProperty getOwnProperty; |
| DefineOwnProperty defineOwnProperty; |
| IsExtensible isExtensible; |
| PreventExtensions preventExtensions; |
| GetPrototypeOf getPrototypeOf; |
| SetPrototypeOf setPrototypeOf; |
| GetLength getLength; |
| OwnPropertyKeys ownPropertyKeys; |
| InstanceOf instanceOf; |
| |
| Call call; |
| CallAsConstructor callAsConstructor; |
| |
| ResolveLookupGetter resolveLookupGetter; |
| ResolveLookupSetter resolveLookupSetter; |
| }; |
| |
| |
| struct VTableBase { |
| protected: |
| static constexpr VTable::Destroy virtualDestroy = nullptr; |
| static constexpr VTable::IsEqualTo virtualIsEqualTo = nullptr; |
| |
| static constexpr VTable::Get virtualGet = nullptr; |
| static constexpr VTable::Put virtualPut = nullptr; |
| static constexpr VTable::DeleteProperty virtualDeleteProperty = nullptr; |
| static constexpr VTable::HasProperty virtualHasProperty = nullptr; |
| static constexpr VTable::GetOwnProperty virtualGetOwnProperty = nullptr; |
| static constexpr VTable::DefineOwnProperty virtualDefineOwnProperty = nullptr; |
| static constexpr VTable::IsExtensible virtualIsExtensible = nullptr; |
| static constexpr VTable::PreventExtensions virtualPreventExtensions = nullptr; |
| static constexpr VTable::GetPrototypeOf virtualGetPrototypeOf = nullptr; |
| static constexpr VTable::SetPrototypeOf virtualSetPrototypeOf = nullptr; |
| static constexpr VTable::GetLength virtualGetLength = nullptr; |
| static constexpr VTable::OwnPropertyKeys virtualOwnPropertyKeys = nullptr; |
| static constexpr VTable::InstanceOf virtualInstanceOf = nullptr; |
| |
| static constexpr VTable::Call virtualCall = nullptr; |
| static constexpr VTable::CallAsConstructor virtualCallAsConstructor = nullptr; |
| |
| static constexpr VTable::ResolveLookupGetter virtualResolveLookupGetter = nullptr; |
| static constexpr VTable::ResolveLookupSetter virtualResolveLookupSetter = nullptr; |
| }; |
| |
| #define DEFINE_MANAGED_VTABLE_INT(classname, parentVTable) \ |
| { \ |
| parentVTable, \ |
| (sizeof(classname::Data) + sizeof(QV4::Value) - 1)/sizeof(QV4::Value), \ |
| (sizeof(classname::Data) + (classname::NInlineProperties*sizeof(QV4::Value)) + QV4::Chunk::SlotSize - 1)/QV4::Chunk::SlotSize*QV4::Chunk::SlotSize/sizeof(QV4::Value) \ |
| - (sizeof(classname::Data) + sizeof(QV4::Value) - 1)/sizeof(QV4::Value), \ |
| classname::IsExecutionContext, \ |
| classname::IsString, \ |
| classname::IsObject, \ |
| classname::IsFunctionObject, \ |
| classname::IsErrorObject, \ |
| classname::IsArrayData, \ |
| classname::IsStringOrSymbol, \ |
| classname::MyType, \ |
| { 0, 0, 0, 0 }, \ |
| #classname, \ |
| \ |
| classname::virtualDestroy, \ |
| classname::Data::markObjects, \ |
| classname::virtualIsEqualTo, \ |
| \ |
| classname::virtualGet, \ |
| classname::virtualPut, \ |
| classname::virtualDeleteProperty, \ |
| classname::virtualHasProperty, \ |
| classname::virtualGetOwnProperty, \ |
| classname::virtualDefineOwnProperty, \ |
| classname::virtualIsExtensible, \ |
| classname::virtualPreventExtensions, \ |
| classname::virtualGetPrototypeOf, \ |
| classname::virtualSetPrototypeOf, \ |
| classname::virtualGetLength, \ |
| classname::virtualOwnPropertyKeys, \ |
| classname::virtualInstanceOf, \ |
| \ |
| classname::virtualCall, \ |
| classname::virtualCallAsConstructor, \ |
| \ |
| classname::virtualResolveLookupGetter, \ |
| classname::virtualResolveLookupSetter \ |
| } |
| |
| #define DEFINE_MANAGED_VTABLE(classname) \ |
| const QV4::VTable classname::static_vtbl = DEFINE_MANAGED_VTABLE_INT(classname, 0) |
| |
| #define V4_OBJECT2(DataClass, superClass) \ |
| private: \ |
| DataClass() Q_DECL_EQ_DELETE; \ |
| Q_DISABLE_COPY(DataClass) \ |
| public: \ |
| Q_MANAGED_CHECK \ |
| typedef QV4::Heap::DataClass Data; \ |
| typedef superClass SuperClass; \ |
| static const QV4::VTable static_vtbl; \ |
| static inline const QV4::VTable *staticVTable() { return &static_vtbl; } \ |
| V4_MANAGED_SIZE_TEST \ |
| QV4::Heap::DataClass *d_unchecked() const { return static_cast<QV4::Heap::DataClass *>(m()); } \ |
| QV4::Heap::DataClass *d() const { \ |
| QV4::Heap::DataClass *dptr = d_unchecked(); \ |
| dptr->_checkIsInitialized(); \ |
| return dptr; \ |
| } \ |
| Q_STATIC_ASSERT(std::is_trivial< QV4::Heap::DataClass >::value); |
| |
| #define V4_PROTOTYPE(p) \ |
| static QV4::Object *defaultPrototype(QV4::ExecutionEngine *e) \ |
| { return e->p(); } |
| |
| |
| #define DEFINE_OBJECT_VTABLE_BASE(classname) \ |
| const QV4::VTable classname::static_vtbl = DEFINE_MANAGED_VTABLE_INT(classname, (std::is_same<classname::SuperClass, Object>::value) ? nullptr : &classname::SuperClass::static_vtbl) |
| |
| #define DEFINE_OBJECT_VTABLE(classname) \ |
| DEFINE_OBJECT_VTABLE_BASE(classname) |
| |
| #define DEFINE_OBJECT_TEMPLATE_VTABLE(classname) \ |
| template<> DEFINE_OBJECT_VTABLE_BASE(classname) |
| |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |