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// Copyright 2012 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 Defines a class for parsing JSON using the browser's built in
* JSON library.
*/
goog.provide('goog.json.NativeJsonProcessor');
goog.require('goog.asserts');
goog.require('goog.json');
goog.require('goog.json.Processor');
/**
* A class that parses and stringifies JSON using the browser's built-in JSON
* library, if it is avaliable.
*
* Note that the native JSON api has subtle differences across browsers, so
* use this implementation with care. See json_test#assertSerialize
* for details on the differences from goog.json.
*
* This implementation is signficantly faster than goog.json, at least on
* Chrome. See json_perf.html for a perf test showing the difference.
*
* @param {?goog.json.Replacer=} opt_replacer An optional replacer to use during
* serialization.
* @param {?goog.json.Reviver=} opt_reviver An optional reviver to use during
* parsing.
* @constructor
* @implements {goog.json.Processor}
*/
goog.json.NativeJsonProcessor = function(opt_replacer, opt_reviver) {
goog.asserts.assert(goog.isDef(goog.global['JSON']), 'JSON not defined');
/**
* @type {goog.json.Replacer|null|undefined}
* @private
*/
this.replacer_ = opt_replacer;
/**
* @type {goog.json.Reviver|null|undefined}
* @private
*/
this.reviver_ = opt_reviver;
};
/** @override */
goog.json.NativeJsonProcessor.prototype.stringify = function(object) {
return goog.global['JSON'].stringify(object, this.replacer_);
};
/** @override */
goog.json.NativeJsonProcessor.prototype.parse = function(s) {
return goog.global['JSON'].parse(s, this.reviver_);
};
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