1/* 2 * Copyright (c) 2025 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 16function Buffer() {} 17 18function ReadBigInt64BE(array, offset) { 19 offset = offset >>> 0; 20 // not buildin typed array 21 const first = array[offset]; 22 return BigInt(first); 23} 24 25function Test() { 26 let buf = new Uint8Array([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]); 27 Object.setPrototypeOf(buf, Buffer.prototype); 28 let result = ReadBigInt64BE(buf, 0); 29 print(result); 30} 31 32Test(); 33 34ArkTools.jitCompileAsync(ReadBigInt64BE); 35print(ArkTools.waitJitCompileFinish(ReadBigInt64BE)); 36 37Test(); 38