Permalink
Cannot retrieve contributors at this time
44 lines (35 sloc)
1.42 KB
Name already in use
A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?
codeql-action/node_modules/es-abstract/2023/ParseHexOctet.js
Go to fileThis commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $Number = GetIntrinsic('%Number%'); | |
var $SyntaxError = GetIntrinsic('%SyntaxError%'); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var IsIntegralNumber = require('./IsIntegralNumber'); | |
var substring = require('./substring'); | |
var Type = require('./Type'); | |
var isNaN = require('../helpers/isNaN'); | |
// https://262.ecma-international.org/14.0/#sec-parsehexoctet | |
module.exports = function ParseHexOctet(string, position) { | |
if (Type(string) !== 'String') { | |
throw new $TypeError('Assertion failed: `string` must be a String'); | |
} | |
if (!IsIntegralNumber(position) || position < 0) { | |
throw new $TypeError('Assertion failed: `position` must be a nonnegative integer'); | |
} | |
var len = string.length; // step 1 | |
if ((position + 2) > len) { // step 2 | |
var error = new $SyntaxError('requested a position on a string that does not contain 2 characters at that position'); // step 2.a | |
return [error]; // step 2.b | |
} | |
var hexDigits = substring(string, position, position + 2); // step 3 | |
var n = $Number('0x' + hexDigits); | |
if (isNaN(n)) { | |
return [new $SyntaxError('Invalid hexadecimal characters')]; | |
} | |
return n; | |
/* | |
4. Let _parseResult_ be ParseText(StringToCodePoints(_hexDigits_), |HexDigits[~Sep]|). | |
5. If _parseResult_ is not a Parse Node, return _parseResult_. | |
6. Let _n_ be the unsigned 8-bit value corresponding with the MV of _parseResult_. | |
7. Return _n_. | |
*/ | |
}; |