'use strict'; var GetIntrinsic = require('get-intrinsic'); var $SyntaxError = require('es-errors/syntax'); var $TypeError = require('es-errors/type'); var $Uint8Array = GetIntrinsic('%Uint8Array%', true); var isInteger = require('math-intrinsics/isInteger'); var IsBigIntElementType = require('./IsBigIntElementType'); var IsDetachedBuffer = require('./IsDetachedBuffer'); var NumericToRawBytes = require('./NumericToRawBytes'); var isArrayBuffer = require('is-array-buffer'); var isSharedArrayBuffer = require('is-shared-array-buffer'); var hasOwn = require('hasown'); var tableTAO = require('./tables/typed-array-objects'); var defaultEndianness = require('../helpers/defaultEndianness'); var forEach = require('../helpers/forEach'); // https://262.ecma-international.org/11.0/#sec-setvalueinbuffer /* eslint max-params: 0 */ module.exports = function SetValueInBuffer(arrayBuffer, byteIndex, type, value, isTypedArray, order) { var isSAB = isSharedArrayBuffer(arrayBuffer); if (!isArrayBuffer(arrayBuffer) && !isSAB) { throw new $TypeError('Assertion failed: `arrayBuffer` must be an ArrayBuffer or a SharedArrayBuffer'); } if (!isInteger(byteIndex)) { throw new $TypeError('Assertion failed: `byteIndex` must be an integer'); } if (typeof type !== 'string' || !hasOwn(tableTAO.size, '$' + type)) { throw new $TypeError('Assertion failed: `type` must be a Typed Array Element Type'); } if (typeof value !== 'number' && typeof value !== 'bigint') { throw new $TypeError('Assertion failed: `value` must be a Number or a BigInt'); } if (typeof isTypedArray !== 'boolean') { throw new $TypeError('Assertion failed: `isTypedArray` must be a boolean'); } if (order !== 'SeqCst' && order !== 'Unordered' && order !== 'Init') { throw new $TypeError('Assertion failed: `order` must be `"SeqCst"`, `"Unordered"`, or `"Init"`'); } if (arguments.length > 6 && typeof arguments[6] !== 'boolean') { throw new $TypeError('Assertion failed: `isLittleEndian` must be a boolean, if present'); } if (IsDetachedBuffer(arrayBuffer)) { throw new $TypeError('Assertion failed: ArrayBuffer is detached'); // step 1 } // 2. Assert: There are sufficient bytes in arrayBuffer starting at byteIndex to represent a value of type. if (byteIndex < 0) { throw new $TypeError('Assertion failed: `byteIndex` must be non-negative'); // step 3 } if (IsBigIntElementType(type) ? typeof value !== 'bigint' : typeof value !== 'number') { // step 4 throw new $TypeError('Assertion failed: `value` must be a BigInt if type is BigInt64 or BigUint64, otherwise a Number'); } // 5. Let block be arrayBuffer.[[ArrayBufferData]]. var elementSize = tableTAO.size['$' + type]; // step 6 // 7. If isLittleEndian is not present, set isLittleEndian to to the value of the [[LittleEndian]] field of the surrounding agent's Agent Record. var isLittleEndian = arguments.length > 6 ? arguments[6] : defaultEndianness === 'little'; // step 8 var rawBytes = NumericToRawBytes(type, value, isLittleEndian); // step 8 if (isSAB) { // step 9 /* Let execution be the [[CandidateExecution]] field of the surrounding agent's Agent Record. Let eventList be the [[EventList]] field of the element in execution.[[EventsRecords]] whose [[AgentSignifier]] is AgentSignifier(). If isTypedArray is true and IsNoTearConfiguration(type, order) is true, let noTear be true; otherwise let noTear be false. Append WriteSharedMemory { [[Order]]: order, [[NoTear]]: noTear, [[Block]]: block, [[ByteIndex]]: byteIndex, [[ElementSize]]: elementSize, [[Payload]]: rawBytes } to eventList. */ throw new $SyntaxError('SharedArrayBuffer is not supported by this implementation'); } else { // 10. Store the individual bytes of rawBytes into block, in order, starting at block[byteIndex]. var arr = new $Uint8Array(arrayBuffer, byteIndex, elementSize); forEach(rawBytes, function (rawByte, i) { arr[i] = rawByte; }); } // 11. Return NormalCompletion(undefined). };