/**
 * jQuery JSON plugin v2.5.1
 * https://github.com/Krinkle/jquery-json
 *
 * @author Brantley Harris, 2009-2011
 * @author Timo Tijhof, 2011-2014
 * @source This plugin is heavily influenced by MochiKit's serializeJSON, which is
 *         copyrighted 2005 by Bob Ippolito.
 * @source Brantley Harris wrote this plugin. It is based somewhat on the JSON.org
 *         website's http://www.json.org/json2.js, which proclaims:
 *         "NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.", a sentiment that
 *         I uphold.
 * @license MIT License <http://opensource.org/licenses/MIT>
 */
(function ($) {
 'use strict';

 var escape = /["\\\x00-\x1f\x7f-\x9f]/g,
  meta = {
   '\b': '\\b',
   '\t': '\\t',
   '\n': '\\n',
   '\f': '\\f',
   '\r': '\\r',
   '"': '\\"',
   '\\': '\\\\'
  },
  hasOwn = Object.prototype.hasOwnProperty;

 /**
  * jQuery.toJSON
  * Converts the given argument into a JSON representation.
  *
  * @param o {Mixed} The json-serializable *thing* to be converted
  *
  * If an object has a toJSON prototype, that will be used to get the representation.
  * Non-integer/string keys are skipped in the object, as are keys that point to a
  * function.
  *
  */
 $.toJSON = typeof JSON === 'object' && JSON.stringify ? JSON.stringify : function (o) {
  if (o === null) {
   return 'null';
  }

  var pairs, k, name, val,
   type = $.type(o);

  if (type === 'undefined') {
   return undefined;
  }

  // Also covers instantiated Number and Boolean objects,
  // which are typeof 'object' but thanks to $.type, we
  // catch them here. I don't know whether it is right
  // or wrong that instantiated primitives are not
  // exported to JSON as an {"object":..}.
  // We choose this path because that's what the browsers did.
  if (type === 'number' || type === 'boolean') {
   return String(o);
  }
  if (type === 'string') {
   return $.quoteString(o);
  }
  if (typeof o.toJSON === 'function') {
   return $.toJSON(o.toJSON());
  }
  if (type === 'date') {
   var month = o.getUTCMonth() + 1,
    day = o.getUTCDate(),
    year = o.getUTCFullYear(),
    hours = o.getUTCHours(),
    minutes = o.getUTCMinutes(),
    seconds = o.getUTCSeconds(),
    milli = o.getUTCMilliseconds();

   if (month < 10) {
    month = '0' + month;
   }
   if (day < 10) {
    day = '0' + day;
   }
   if (hours < 10) {
    hours = '0' + hours;
   }
   if (minutes < 10) {
    minutes = '0' + minutes;
   }
   if (seconds < 10) {
    seconds = '0' + seconds;
   }
   if (milli < 100) {
    milli = '0' + milli;
   }
   if (milli < 10) {
    milli = '0' + milli;
   }
   return '"' + year + '-' + month + '-' + day + 'T' +
    hours + ':' + minutes + ':' + seconds +
    '.' + milli + 'Z"';
  }

  pairs = [];

  if ($.isArray(o)) {
   for (k = 0; k < o.length; k++) {
    pairs.push($.toJSON(o[k]) || 'null');
   }
   return '[' + pairs.join(',') + ']';
  }

  // Any other object (plain object, RegExp, ..)
  // Need to do typeof instead of $.type, because we also
  // want to catch non-plain objects.
  if (typeof o === 'object') {
   for (k in o) {
    // Only include own properties,
    // Filter out inherited prototypes
    if (hasOwn.call(o, k)) {
     // Keys must be numerical or string. Skip others
     type = typeof k;
     if (type === 'number') {
      name = '"' + k + '"';
     } else if (type === 'string') {
      name = $.quoteString(k);
     } else {
      continue;
     }
     type = typeof o[k];

     // Invalid values like these return undefined
     // from toJSON, however those object members
     // shouldn't be included in the JSON string at all.
     if (type !== 'function' && type !== 'undefined') {
      val = $.toJSON(o[k]);
      pairs.push(name + ':' + val);
     }
    }
   }
   return '{' + pairs.join(',') + '}';
  }
 };

 /**
  * jQuery.evalJSON
  * Evaluates a given json string.
  *
  * @param str {String}
  */
 $.evalJSON = typeof JSON === 'object' && JSON.parse ? JSON.parse : function (str) {
  /*jshint evil: true */
  return eval('(' + str + ')');
 };

 /**
  * jQuery.secureEvalJSON
  * Evals JSON in a way that is *more* secure.
  *
  * @param str {String}
  */
 $.secureEvalJSON = typeof JSON === 'object' && JSON.parse ? JSON.parse : function (str) {
  var filtered =
   str
   .replace(/\\["\\\/bfnrtu]/g, '@')
   .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')
   .replace(/(?:^|:|,)(?:\s*\[)+/g, '');

  if (/^[\],:{}\s]*$/.test(filtered)) {
   /*jshint evil: true */
   return eval('(' + str + ')');
  }
  throw new SyntaxError('Error parsing JSON, source is not valid.');
 };

 /**
  * jQuery.quoteString
  * Returns a string-repr of a string, escaping quotes intelligently.
  * Mostly a support function for toJSON.
  * Examples:
  * >>> jQuery.quoteString('apple')
  * "apple"
  *
  * >>> jQuery.quoteString('"Where are we going?", she asked.')
  * "\"Where are we going?\", she asked."
  */
 $.quoteString = function (str) {
  if (str.match(escape)) {
   return '"' + str.replace(escape, function (a) {
    var c = meta[a];
    if (typeof c === 'string') {
     return c;
    }
    c = a.charCodeAt();
    return '\\u00' + Math.floor(c / 16).toString(16) + (c % 16).toString(16);
   }) + '"';
  }
  return '"' + str + '"';
 };

}(jQuery));