You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
37 lines
950 B
37 lines
950 B
1 year ago
|
'use strict';
|
||
|
|
|
||
|
|
var GetIntrinsic = require('get-intrinsic');
|
||
|
|
|
||
|
|
var $RangeError = GetIntrinsic('%RangeError%');
|
||
|
|
var $TypeError = GetIntrinsic('%TypeError%');
|
||
|
|
|
||
|
|
var ToIndex = require('./ToIndex');
|
||
|
|
|
||
|
|
var isTypedArray = require('is-typed-array');
|
||
|
|
var typedArrayLength = require('typed-array-length');
|
||
|
|
|
||
|
|
// https://262.ecma-international.org/8.0/#sec-validateatomicaccess
|
||
|
|
|
||
|
|
module.exports = function ValidateAtomicAccess(typedArray, requestIndex) {
|
||
|
|
if (!isTypedArray(typedArray)) {
|
||
|
|
throw new $TypeError('Assertion failed: `typedArray` must be a TypedArray'); // step 1
|
||
|
|
}
|
||
|
|
|
||
|
|
var accessIndex = ToIndex(requestIndex); // step 2
|
||
|
|
|
||
|
|
var length = typedArrayLength(typedArray); // step 3
|
||
|
|
|
||
|
|
/*
|
||
|
|
// this assertion can never be reached
|
||
|
|
if (!(accessIndex >= 0)) {
|
||
|
|
throw new $TypeError('Assertion failed: accessIndex >= 0'); // step 4
|
||
|
|
}
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (accessIndex >= length) {
|
||
|
|
throw new $RangeError('index out of range'); // step 5
|
||
|
|
}
|
||
|
|
|
||
|
|
return accessIndex; // step 6
|
||
|
|
};
|