1 // Copyright 2018 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef V8_OBJECTS_STRUCT_H_ 6 #define V8_OBJECTS_STRUCT_H_ 7 8 #include "src/objects/heap-object.h" 9 #include "src/objects/objects.h" 10 11 // Has to be the last include (doesn't have include guards): 12 #include "src/objects/object-macros.h" 13 14 namespace v8 { 15 namespace internal { 16 17 #include "torque-generated/src/objects/struct-tq.inc" 18 19 // An abstract superclass, a marker class really, for simple structure classes. 20 // It doesn't carry any functionality but allows struct classes to be 21 // identified in the type system. 22 class Struct : public TorqueGeneratedStruct<Struct, HeapObject> { 23 public: 24 inline void InitializeBody(int object_size); 25 void BriefPrintDetails(std::ostream& os); 26 STATIC_ASSERT(kHeaderSize == HeapObject::kHeaderSize); 27 28 TQ_OBJECT_CONSTRUCTORS(Struct) 29 }; 30 31 class Tuple2 : public TorqueGeneratedTuple2<Tuple2, Struct> { 32 public: 33 void BriefPrintDetails(std::ostream& os); 34 35 TQ_OBJECT_CONSTRUCTORS(Tuple2) 36 }; 37 38 // Support for JavaScript accessors: A pair of a getter and a setter. Each 39 // accessor can either be 40 // * a JavaScript function or proxy: a real accessor 41 // * a FunctionTemplateInfo: a real (lazy) accessor 42 // * undefined: considered an accessor by the spec, too, strangely enough 43 // * null: an accessor which has not been set 44 class AccessorPair : public TorqueGeneratedAccessorPair<AccessorPair, Struct> { 45 public: 46 NEVER_READ_ONLY_SPACE 47 static Handle<AccessorPair> Copy(Isolate* isolate, Handle<AccessorPair> pair); 48 49 inline Object get(AccessorComponent component); 50 inline void set(AccessorComponent component, Object value); 51 52 // Note: Returns undefined if the component is not set. 53 static Handle<Object> GetComponent(Isolate* isolate, 54 Handle<NativeContext> native_context, 55 Handle<AccessorPair> accessor_pair, 56 AccessorComponent component); 57 58 // Set both components, skipping arguments which are a JavaScript null. 59 inline void SetComponents(Object getter, Object setter); 60 61 inline bool Equals(Object getter_value, Object setter_value); 62 63 // Dispatched behavior. 64 DECL_PRINTER(AccessorPair) 65 66 TQ_OBJECT_CONSTRUCTORS(AccessorPair) 67 }; 68 69 class ClassPositions 70 : public TorqueGeneratedClassPositions<ClassPositions, Struct> { 71 public: 72 // Dispatched behavior. 73 DECL_PRINTER(ClassPositions) 74 void BriefPrintDetails(std::ostream& os); 75 76 TQ_OBJECT_CONSTRUCTORS(ClassPositions) 77 }; 78 79 } // namespace internal 80 } // namespace v8 81 82 #include "src/objects/object-macros-undef.h" 83 84 #endif // V8_OBJECTS_STRUCT_H_ 85