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codeql-action/node_modules/es-abstract/2020/NumericToRawBytes.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var hasOwnProperty = require('./HasOwnProperty'); | |
var ToBigInt64 = require('./ToBigInt64'); | |
var ToBigUint64 = require('./ToBigUint64'); | |
var ToInt16 = require('./ToInt16'); | |
var ToInt32 = require('./ToInt32'); | |
var ToInt8 = require('./ToInt8'); | |
var ToUint16 = require('./ToUint16'); | |
var ToUint32 = require('./ToUint32'); | |
var ToUint8 = require('./ToUint8'); | |
var ToUint8Clamp = require('./ToUint8Clamp'); | |
var Type = require('./Type'); | |
var valueToFloat32Bytes = require('../helpers/valueToFloat32Bytes'); | |
var valueToFloat64Bytes = require('../helpers/valueToFloat64Bytes'); | |
var integerToNBytes = require('../helpers/integerToNBytes'); | |
var keys = require('object-keys'); | |
// https://262.ecma-international.org/11.0/#table-the-typedarray-constructors | |
var TypeToSizes = { | |
__proto__: null, | |
Int8: 1, | |
Uint8: 1, | |
Uint8C: 1, | |
Int16: 2, | |
Uint16: 2, | |
Int32: 4, | |
Uint32: 4, | |
BigInt64: 8, | |
BigUint64: 8, | |
Float32: 4, | |
Float64: 8 | |
}; | |
var TypeToAO = { | |
__proto__: null, | |
Int8: ToInt8, | |
Uint8: ToUint8, | |
Uint8C: ToUint8Clamp, | |
Int16: ToInt16, | |
Uint16: ToUint16, | |
Int32: ToInt32, | |
Uint32: ToUint32, | |
BigInt64: ToBigInt64, | |
BigUint64: ToBigUint64 | |
}; | |
// https://262.ecma-international.org/11.0/#sec-numerictorawbytes | |
module.exports = function NumericToRawBytes(type, value, isLittleEndian) { | |
if (typeof type !== 'string' || !hasOwnProperty(TypeToSizes, type)) { | |
throw new $TypeError('Assertion failed: `type` must be a TypedArray element type: ' + keys(TypeToSizes)); | |
} | |
if (Type(value) !== 'Number' && Type(value) !== 'BigInt') { | |
throw new $TypeError('Assertion failed: `value` must be a Number or a BigInt'); | |
} | |
if (Type(isLittleEndian) !== 'Boolean') { | |
throw new $TypeError('Assertion failed: `isLittleEndian` must be a Boolean'); | |
} | |
if (type === 'Float32') { // step 1 | |
return valueToFloat32Bytes(value, isLittleEndian); | |
} else if (type === 'Float64') { // step 2 | |
return valueToFloat64Bytes(value, isLittleEndian); | |
} // step 3 | |
var n = TypeToSizes[type]; // step 3.a | |
var convOp = TypeToAO[type]; // step 3.b | |
var intValue = convOp(value); // step 3.c | |
return integerToNBytes(intValue, n, isLittleEndian); // step 3.d, 3.e, 4 | |
}; |