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| ****************************************************************************/ |
| #ifndef QV4LOOKUP_H |
| #define QV4LOOKUP_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" |
| #include "qv4runtime_p.h" |
| #include "qv4engine_p.h" |
| #include "qv4context_p.h" |
| #include "qv4object_p.h" |
| #include "qv4internalclass_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace QV4 { |
| |
| struct Q_QML_PRIVATE_EXPORT Lookup { |
| union { |
| ReturnedValue (*getter)(Lookup *l, ExecutionEngine *engine, const Value &object); |
| ReturnedValue (*globalGetter)(Lookup *l, ExecutionEngine *engine); |
| ReturnedValue (*qmlContextPropertyGetter)(Lookup *l, ExecutionEngine *engine, Value *thisObject); |
| bool (*setter)(Lookup *l, ExecutionEngine *engine, Value &object, const Value &v); |
| }; |
| // NOTE: gc assumes the first two entries in the struct are pointers to heap objects or null |
| union { |
| struct { |
| Heap::Base *h1; |
| Heap::Base *h2; |
| quintptr unused; |
| quintptr unused2; |
| } markDef; |
| struct { |
| Heap::InternalClass *ic; |
| quintptr unused; |
| uint index; |
| uint offset; |
| } objectLookup; |
| struct { |
| quintptr protoId; |
| quintptr _unused; |
| const Value *data; |
| } protoLookup; |
| struct { |
| Heap::InternalClass *ic; |
| Heap::InternalClass *ic2; |
| uint offset; |
| uint offset2; |
| } objectLookupTwoClasses; |
| struct { |
| quintptr protoId; |
| quintptr protoId2; |
| const Value *data; |
| const Value *data2; |
| } protoLookupTwoClasses; |
| struct { |
| // Make sure the next two values are in sync with protoLookup |
| quintptr protoId; |
| Heap::Object *proto; |
| const Value *data; |
| quintptr type; |
| } primitiveLookup; |
| struct { |
| Heap::InternalClass *newClass; |
| quintptr protoId; |
| uint offset; |
| uint unused; |
| } insertionLookup; |
| struct { |
| quintptr _unused; |
| quintptr _unused2; |
| uint index; |
| uint unused; |
| } indexedLookup; |
| struct { |
| Heap::InternalClass *ic; |
| Heap::InternalClass *qmlTypeIc; // only used when lookup goes through QQmlTypeWrapper |
| QQmlPropertyCache *propertyCache; |
| QQmlPropertyData *propertyData; |
| } qobjectLookup; |
| struct { |
| Heap::InternalClass *ic; |
| quintptr unused; |
| QQmlPropertyCache *propertyCache; |
| QQmlPropertyData *propertyData; |
| } qgadgetLookup; |
| struct { |
| quintptr unused1; |
| quintptr unused2; |
| int scriptIndex; |
| } qmlContextScriptLookup; |
| struct { |
| Heap::Object *singleton; |
| quintptr unused; |
| } qmlContextSingletonLookup; |
| struct { |
| quintptr unused1; |
| quintptr unused2; |
| int objectId; |
| } qmlContextIdObjectLookup; |
| struct { |
| // Same as protoLookup, as used for global lookups |
| quintptr reserved1; |
| quintptr reserved2; |
| quintptr reserved3; |
| ReturnedValue (*getterTrampoline)(Lookup *l, ExecutionEngine *engine); |
| } qmlContextGlobalLookup; |
| struct { |
| Heap::Object *qmlTypeWrapper; |
| quintptr unused2; |
| } qmlTypeLookup; |
| struct { |
| Heap::InternalClass *ic; |
| quintptr unused; |
| ReturnedValue encodedEnumValue; |
| } qmlEnumValueLookup; |
| struct { |
| Heap::InternalClass *ic; |
| Heap::Object *qmlScopedEnumWrapper; |
| } qmlScopedEnumWrapperLookup; |
| }; |
| uint nameIndex; |
| |
| ReturnedValue resolveGetter(ExecutionEngine *engine, const Object *object); |
| ReturnedValue resolvePrimitiveGetter(ExecutionEngine *engine, const Value &object); |
| ReturnedValue resolveGlobalGetter(ExecutionEngine *engine); |
| void resolveProtoGetter(PropertyKey name, const Heap::Object *proto); |
| |
| static ReturnedValue getterGeneric(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterTwoClasses(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterFallback(Lookup *l, ExecutionEngine *engine, const Value &object); |
| |
| static ReturnedValue getter0MemberData(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getter0Inline(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterProto(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getter0Inlinegetter0Inline(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getter0Inlinegetter0MemberData(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getter0MemberDatagetter0MemberData(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterProtoTwoClasses(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterAccessor(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterProtoAccessor(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterProtoAccessorTwoClasses(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue getterIndexed(Lookup *l, ExecutionEngine *engine, const Value &object); |
| |
| static ReturnedValue primitiveGetterProto(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue primitiveGetterAccessor(Lookup *l, ExecutionEngine *engine, const Value &object); |
| static ReturnedValue stringLengthGetter(Lookup *l, ExecutionEngine *engine, const Value &object); |
| |
| static ReturnedValue globalGetterGeneric(Lookup *l, ExecutionEngine *engine); |
| static ReturnedValue globalGetterProto(Lookup *l, ExecutionEngine *engine); |
| static ReturnedValue globalGetterProtoAccessor(Lookup *l, ExecutionEngine *engine); |
| |
| bool resolveSetter(ExecutionEngine *engine, Object *object, const Value &value); |
| static bool setterGeneric(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| Q_NEVER_INLINE static bool setterTwoClasses(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| static bool setterFallback(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| static bool setter0MemberData(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| static bool setter0Inline(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| static bool setter0setter0(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| static bool setterInsert(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| static bool arrayLengthSetter(Lookup *l, ExecutionEngine *engine, Value &object, const Value &value); |
| |
| void markObjects(MarkStack *stack) { |
| if (markDef.h1 && !(reinterpret_cast<quintptr>(markDef.h1) & 1)) |
| markDef.h1->mark(stack); |
| if (markDef.h2 && !(reinterpret_cast<quintptr>(markDef.h2) & 1)) |
| markDef.h2->mark(stack); |
| } |
| |
| void clear() { |
| memset(&markDef, 0, sizeof(markDef)); |
| } |
| }; |
| |
| Q_STATIC_ASSERT(std::is_standard_layout<Lookup>::value); |
| // Ensure that these offsets are always at this point to keep generated code compatible |
| // across 32-bit and 64-bit (matters when cross-compiling). |
| Q_STATIC_ASSERT(offsetof(Lookup, getter) == 0); |
| |
| } |
| |
| QT_END_NAMESPACE |
| |
| #endif |