'use strict';
var util = require('util');
var DataType = require('./data-type.js');
/**
* @classdesc Provide methods to work with Integer data.
* @description Creates Integer data type definition.
*
* @memberof bo.dataTypes
* @constructor
*
* @extends bo.dataTypes.DataType
*/
function Integer () {
// Immutable object.
DataType.call(this);
}
util.inherits(Integer, DataType);
/**
* Checks if value is an Integer data.
*
* @function bo.dataTypes.Integer#parse
* @param {*} [value] - The value to check.
* @returns {*} The Integer value or null when the input value is valid, otherwise undefined.
*/
Integer.prototype.parse = function (value) {
if (value === null)
return value;
if (value === undefined)
return null;
var integer;
if (typeof value === 'number')
integer = value;
else if (value instanceof Number)
integer = value.valueOf();
else
integer = new Number(value).valueOf();
return isNaN(integer) || (integer % 1 !== 0) ? undefined : integer;
};
/**
* Checks if value is an Integer data and is not null.
*
* @function bo.dataTypes.Integer#hasValue
* @param {data} value - The value to check.
* @returns {boolean} True if the value is Integer and not null, otherwise false.
*/
Integer.prototype.hasValue = function (value) {
var parsed = this.parse(value);
return parsed !== undefined && parsed !== null;
};
module.exports = Integer;