1 /* 2 * Copyright (c) 2023 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_MEM_LAYOUT_VISITOR_H 17 #define ECMASCRIPT_MEM_LAYOUT_VISITOR_H 18 19 #include <functional> 20 21 #include "ecmascript/js_hclass.h" 22 #include "ecmascript/mem/slots.h" 23 24 namespace panda::ecmascript { 25 template <VisitType visitType, size_t size> 26 class JSObjectBodyIterator { 27 public: 28 template <class DerivedVisitor> IterateBody(TaggedObject * root,BaseObjectVisitor<DerivedVisitor> & visitor)29 static inline void IterateBody(TaggedObject *root, BaseObjectVisitor<DerivedVisitor> &visitor) 30 { 31 auto hclass = root->SynchronizedGetClass(); 32 auto objSize = hclass->GetObjectSize(); 33 if (objSize > size) { 34 if (LIKELY(hclass->IsAllTaggedProp())) { 35 IteratorRange(root, visitor, size, objSize, VisitObjectArea::NORMAL); 36 } else { 37 IteratorRange(root, visitor, size, objSize, VisitObjectArea::IN_OBJECT); 38 } 39 } 40 } 41 42 template <class DerivedVisitor> IteratorRange(TaggedObject * root,BaseObjectVisitor<DerivedVisitor> & visitor,size_t start,size_t end,VisitObjectArea area)43 static inline void IteratorRange(TaggedObject *root, BaseObjectVisitor<DerivedVisitor> &visitor, 44 size_t start, size_t end, VisitObjectArea area) 45 { 46 visitor(root, ToUintPtr(root) + start, ToUintPtr(root) + end, area); 47 } 48 }; 49 } // namespace panda::ecmascript 50 #endif // ECMASCRIPT_MEM_LAYOUT_VISITOR_H 51