45 lines
1.3 KiB
JavaScript
45 lines
1.3 KiB
JavaScript
'use strict';
|
|
|
|
var GetIntrinsic = require('get-intrinsic');
|
|
var callBound = require('call-bind/callBound');
|
|
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
|
|
|
var $push = callBound('Array.prototype.push');
|
|
|
|
var IsArray = require('./IsArray');
|
|
|
|
var isByteValue = require('../helpers/isByteValue');
|
|
|
|
// https://ecma-international.org/ecma-262/12.0/#sec-bytelistbitwiseop
|
|
|
|
module.exports = function ByteListBitwiseOp(op, xBytes, yBytes) {
|
|
if (op !== '&' && op !== '^' && op !== '|') {
|
|
throw new $TypeError('Assertion failed: `op` must be `&`, `^`, or `|`');
|
|
}
|
|
if (!IsArray(xBytes) || !IsArray(yBytes) || xBytes.length !== yBytes.length) {
|
|
throw new $TypeError('Assertion failed: `xBytes` and `yBytes` must be same-length sequences of byte values (an integer 0-255, inclusive)');
|
|
}
|
|
|
|
var result = [];
|
|
|
|
for (var i = 0; i < xBytes.length; i += 1) {
|
|
var xByte = xBytes[i];
|
|
var yByte = yBytes[i];
|
|
if (!isByteValue(xByte) || !isByteValue(yByte)) {
|
|
throw new $TypeError('Assertion failed: `xBytes` and `yBytes` must be same-length sequences of byte values (an integer 0-255, inclusive)');
|
|
}
|
|
var resultByte;
|
|
if (op === '&') {
|
|
resultByte = xByte & yByte;
|
|
} else if (op === '^') {
|
|
resultByte = xByte ^ yByte;
|
|
} else {
|
|
resultByte = xByte | yByte;
|
|
}
|
|
$push(result, resultByte);
|
|
}
|
|
|
|
return result;
|
|
};
|