| // Copyright 2007 The Closure Library Authors. All Rights Reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS-IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| /** |
| * @fileoverview Protocol buffer serializer. |
| * @author arv@google.com (Erik Arvidsson) |
| */ |
| |
| |
| // TODO(arv): Serialize booleans as 0 and 1 |
| |
| |
| goog.provide('goog.proto.Serializer'); |
| |
| |
| goog.require('goog.json.Serializer'); |
| goog.require('goog.string'); |
| |
| |
| |
| /** |
| * Object that can serialize objects or values to a protocol buffer string. |
| * @constructor |
| * @extends {goog.json.Serializer} |
| * @final |
| */ |
| goog.proto.Serializer = function() { |
| goog.json.Serializer.call(this); |
| }; |
| goog.inherits(goog.proto.Serializer, goog.json.Serializer); |
| |
| |
| /** |
| * Serializes an array to a protocol buffer string. This overrides the JSON |
| * method to output empty slots when the value is null or undefined. |
| * @param {Array<*>} arr The array to serialize. |
| * @param {Array<string>} sb Array used as a string builder. |
| * @override |
| */ |
| goog.proto.Serializer.prototype.serializeArray = function(arr, sb) { |
| var l = arr.length; |
| sb.push('['); |
| var emptySlots = 0; |
| var sep = ''; |
| for (var i = 0; i < l; i++) { |
| if (arr[i] == null) { // catches undefined as well |
| emptySlots++; |
| } else { |
| if (emptySlots > 0) { |
| sb.push(goog.string.repeat(',', emptySlots)); |
| emptySlots = 0; |
| } |
| sb.push(sep); |
| this.serializeInternal(arr[i], sb); |
| sep = ','; |
| } |
| } |
| sb.push(']'); |
| }; |