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_JSARRAYBUFFER_H 17 #define ECMASCRIPT_JSARRAYBUFFER_H 18 19 #include "ecmascript/js_object.h" 20 21 namespace panda::ecmascript { 22 class JSArrayBuffer final : public JSObject { 23 public: 24 CAST_NO_CHECK(JSArrayBuffer); 25 26 // 6.2.6.2 27 static void CopyDataBlockBytes(JSTaggedValue toBlock, JSTaggedValue fromBlock, int32_t fromIndex, int32_t count); 28 29 void Attach(JSThread *thread, uint32_t arrayBufferByteLength, JSTaggedValue arrayBufferData); 30 void Detach(JSThread *thread); 31 IsDetach()32 bool IsDetach() 33 { 34 JSTaggedValue arrayBufferData = GetArrayBufferData(); 35 return arrayBufferData == JSTaggedValue::Null(); 36 } 37 38 static constexpr size_t DATA_OFFSET = JSObject::SIZE; 39 ACCESSORS(ArrayBufferData, DATA_OFFSET, BYTE_LENGTH_OFFSET) 40 ACCESSORS_PRIMITIVE_FIELD(ArrayBufferByteLength, uint32_t, BYTE_LENGTH_OFFSET, BIT_FIELD_OFFSET) 41 ACCESSORS_BIT_FIELD(BitField, BIT_FIELD_OFFSET, LAST_OFFSET) 42 DEFINE_ALIGN_SIZE(LAST_OFFSET); 43 44 // define BitField 45 static constexpr size_t SHARED_BITS = 2; 46 FIRST_BIT_FIELD(BitField, Shared, bool, SHARED_BITS) 47 48 DECL_VISIT_OBJECT_FOR_JS_OBJECT(JSObject, DATA_OFFSET, BYTE_LENGTH_OFFSET) 49 DECL_DUMP() 50 }; 51 } // namespace panda::ecmascript 52 53 #endif // ECMASCRIPT_JSARRAYBUFFER_H