main
Last change
on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
Update repo after prototype presentation
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100644
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File size:
1.2 KB
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1 | 'use strict';
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2 |
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3 | var callBound = require('call-bind/callBound');
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4 |
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5 | var $TypeError = require('es-errors/type');
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6 |
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7 | var $push = callBound('Array.prototype.push');
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8 |
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9 | var IsArray = require('./IsArray');
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10 |
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11 | var isByteValue = require('../helpers/isByteValue');
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12 |
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13 | // https://262.ecma-international.org/12.0/#sec-bytelistbitwiseop
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14 |
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15 | module.exports = function ByteListBitwiseOp(op, xBytes, yBytes) {
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16 | if (op !== '&' && op !== '^' && op !== '|') {
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17 | throw new $TypeError('Assertion failed: `op` must be `&`, `^`, or `|`');
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18 | }
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19 | if (!IsArray(xBytes) || !IsArray(yBytes) || xBytes.length !== yBytes.length) {
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20 | throw new $TypeError('Assertion failed: `xBytes` and `yBytes` must be same-length sequences of byte values (an integer 0-255, inclusive)');
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21 | }
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22 |
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23 | var result = [];
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24 |
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25 | for (var i = 0; i < xBytes.length; i += 1) {
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26 | var xByte = xBytes[i];
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27 | var yByte = yBytes[i];
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28 | if (!isByteValue(xByte) || !isByteValue(yByte)) {
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29 | throw new $TypeError('Assertion failed: `xBytes` and `yBytes` must be same-length sequences of byte values (an integer 0-255, inclusive)');
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30 | }
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31 | var resultByte;
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32 | if (op === '&') {
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33 | resultByte = xByte & yByte;
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34 | } else if (op === '^') {
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35 | resultByte = xByte ^ yByte;
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36 | } else {
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37 | resultByte = xByte | yByte;
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38 | }
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39 | $push(result, resultByte);
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40 | }
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41 |
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42 | return result;
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43 | };
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