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