1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef ECMASCRIPT_IC_PROPERTY_BOX_H 17 #define ECMASCRIPT_IC_PROPERTY_BOX_H 18 19 #include "ecmascript/ecma_macros.h" 20 #include "ecmascript/js_hclass.h" 21 #include "ecmascript/js_tagged_value.h" 22 #include "ecmascript/property_attributes.h" 23 24 namespace panda { 25 namespace ecmascript { 26 class PropertyBox : public TaggedObject { 27 public: Cast(ObjectHeader * object)28 static PropertyBox *Cast(ObjectHeader *object) 29 { 30 ASSERT(JSTaggedValue(object).IsPropertyBox()); 31 return static_cast<PropertyBox *>(object); 32 } 33 34 void Clear(const JSThread *thread); 35 IsInvalid()36 inline bool IsInvalid() const 37 { 38 return GetValue().IsHole(); 39 } 40 41 static constexpr size_t VALUE_OFFSET = TaggedObjectSize(); 42 ACCESSORS(Value, VALUE_OFFSET, SIZE); 43 44 DECL_VISIT_OBJECT(VALUE_OFFSET, SIZE) 45 DECL_DUMP() 46 }; 47 } // namespace ecmascript 48 } // namespace panda 49 50 #endif