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'use strict';
const {
ERR_INVALID_ARG_TYPE,
ERR_OUT_OF_RANGE
} = require('internal/errors').codes;
function isInt32(value) {
return value === (value | 0);
}
function isUint32(value) {
return value === (value >>> 0);
}
function validateInt32(value, name) {
if (!isInt32(value)) {
let err;
if (typeof value !== 'number') {
err = new ERR_INVALID_ARG_TYPE(name, 'number', value);
} else if (!Number.isInteger(value)) {
err = new ERR_OUT_OF_RANGE(name, 'an integer', value);
} else {
// 2 ** 31 === 2147483648
err = new ERR_OUT_OF_RANGE(name, '> -2147483649 && < 2147483648', value);
}
Error.captureStackTrace(err, validateInt32);
throw err;
}
}
function validateUint32(value, name, positive) {
if (!isUint32(value)) {
let err;
if (typeof value !== 'number') {
err = new ERR_INVALID_ARG_TYPE(name, 'number', value);
} else if (!Number.isInteger(value)) {
err = new ERR_OUT_OF_RANGE(name, 'an integer', value);
} else {
const min = positive ? 1 : 0;
// 2 ** 32 === 4294967296
err = new ERR_OUT_OF_RANGE(name, `>= ${min} && < 4294967296`, value);
}
Error.captureStackTrace(err, validateUint32);
throw err;
} else if (positive && value === 0) {
const err = new ERR_OUT_OF_RANGE(name, '>= 1 && < 4294967296', value);
Error.captureStackTrace(err, validateUint32);
throw err;
}
}
module.exports = {
isInt32,
isUint32,
validateInt32,
validateUint32
};
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