warehouse
Version:
Simple JSON-based database
72 lines • 1.76 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const schematype_1 = __importDefault(require("../schematype"));
const util_1 = require("../util");
/**
* Virtual schema type.
*/
class SchemaTypeVirtual extends schematype_1.default {
/**
* Add a getter.
*
* @param {Function} fn
* @chainable
*/
get(fn) {
if (typeof fn !== 'function') {
throw new TypeError('Getter must be a function!');
}
this.getter = fn;
return this;
}
/**
* Add a setter.
*
* @param {Function} fn
* @chainable
*/
set(fn) {
if (typeof fn !== 'function') {
throw new TypeError('Setter must be a function!');
}
this.setter = fn;
return this;
}
/**
* Applies getters.
*
* @param {*} value
* @param {Object} data
* @return {*}
*/
cast(value, data) {
if (typeof this.getter !== 'function')
return;
const getter = this.getter;
let hasCache = false;
let cache;
(0, util_1.setGetter)(data, this.name, () => {
if (!hasCache) {
cache = getter.call(data);
hasCache = true;
}
return cache;
});
}
/**
* Applies setters.
*
* @param {*} value
* @param {Object} data
*/
validate(value, data) {
if (typeof this.setter === 'function') {
this.setter.call(data, value);
}
}
}
exports.default = SchemaTypeVirtual;
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