/
number.js
144 lines (123 loc) · 3.03 KB
/
number.js
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/*!
* Module requirements.
*/
var SchemaType = require('../schematype')
, CastError = SchemaType.CastError
/**
* Number SchemaType constructor.
*
* @param {String} key
* @param {Object} options
* @api private
*/
function SchemaNumber (key, options) {
SchemaType.call(this, key, options, 'Number');
};
/**
* Inherits from SchemaType.
*/
SchemaNumber.prototype.__proto__ = SchemaType.prototype;
/**
* Required validator for number
*
* @api private
*/
SchemaNumber.prototype.checkRequired = function checkRequired (value) {
if (SchemaType._isRef(this, value, true)) {
return null != value;
} else {
return typeof value == 'number' || value instanceof Number;
}
};
/**
* Sets a maximum number validator
*
* @param {Number} minimum number
* @api public
*/
SchemaNumber.prototype.min = function (value, message) {
if (this.minValidator)
this.validators = this.validators.filter(function(v){
return v[1] != 'min';
});
if (value != null)
this.validators.push([function(v){
return v === null || v >= value;
}, 'min']);
return this;
};
/**
* Sets a maximum number validator
*
* @param {Number} maximum number
* @api public
*/
SchemaNumber.prototype.max = function (value, message) {
if (this.maxValidator)
this.validators = this.validators.filter(function(v){
return v[1] != 'max';
});
if (value != null)
this.validators.push([this.maxValidator = function(v){
return v === null || v <= value;
}, 'max']);
return this;
};
/**
* Casts to number
*
* @param {Object} value to cast
* @param {Document} document that triggers the casting
* @api private
*/
SchemaNumber.prototype.cast = function (value, doc, init) {
if (SchemaType._isRef(this, value, init)) return value;
if (!isNaN(value)){
if (null === value) return value;
if ('' === value) return null;
if ('string' == typeof value) value = Number(value);
if (value instanceof Number) return value
if ('number' == typeof value) return value;
if (value.toString && !Array.isArray(value) &&
value.toString() == Number(value)) {
return new Number(value)
}
}
throw new CastError('number', value);
};
function handleSingle (val) {
return this.cast(val)
}
function handleArray (val) {
var self = this;
return val.map( function (m) {
return self.cast(m)
});
}
SchemaNumber.prototype.$conditionalHandlers = {
'$lt' : handleSingle
, '$lte': handleSingle
, '$gt' : handleSingle
, '$gte': handleSingle
, '$ne' : handleSingle
, '$in' : handleArray
, '$nin': handleArray
, '$mod': handleArray
, '$all': handleArray
};
SchemaNumber.prototype.castForQuery = function ($conditional, val) {
var handler;
if (arguments.length === 2) {
handler = this.$conditionalHandlers[$conditional];
if (!handler)
throw new Error("Can't use " + $conditional + " with Number.");
return handler.call(this, val);
} else {
val = this.cast($conditional);
return val == null ? val : val
}
};
/**
* Module exports.
*/
module.exports = SchemaNumber;