terriajs/lib/Core/serializeToJson.js

Geospatial data visualization platform.

'use strict';

/*global require*/
var defaultValue = require('terriajs-cesium/Source/Core/defaultValue');

/**
 * Serializes an object to JSON.
 * @param {Object} target The object to serialize.
 * @param {Function} filterFunction A function that, when passed the name of a property as its only parameter, returns true if that property should be serialized and false otherwise.
 * @param {Object} [options] Optional parameters to custom serializers.
 * @return {Object} An object literal corresponding to the serialized object, ready to pass to `JSON.stringify`.
 */
function serializeToJson(target, filterFunction, options) {
    options = defaultValue(options, defaultValue.EMPTY_OBJECT);
    filterFunction = defaultValue(filterFunction, function() { return true; });

    var result = {};

    for (var propertyName in target) {
        if (target.hasOwnProperty(propertyName) &&
            propertyName.length > 0 &&
            propertyName[0] !== '_' &&
            propertyName !== 'parent' &&
            filterFunction(propertyName, target)) {
            if (target.serializers && target.serializers[propertyName]) {
                target.serializers[propertyName](target, result, propertyName, options);
            } else {
                result[propertyName] = target[propertyName];
            }
        }
    }

    return result;
}

module.exports = serializeToJson;