Function serialize

public/javascripts/socket.io.js:2339–2464

(property, object, callback, properties, whitespace, indentation, stack)

	        // Internal: Recursively serializes an object. Implements the
	        // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
	        var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
	          var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;
	          try {
	            // Necessary for host object support.
	            value = object[property];
	          } catch (exception) {}
	          if (typeof value == "object" && value) {
	            className = getClass.call(value);
	            if (className == dateClass && !isProperty.call(value, "toJSON")) {
	              if (value > -1 / 0 && value < 1 / 0) {
	                // Dates are serialized according to the `Date#toJSON` method
	                // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
	                // for the ISO 8601 date time string format.
	                if (getDay) {
	                  // Manually compute the year, month, date, hours, minutes,
	                  // seconds, and milliseconds if the `getUTC*` methods are
	                  // buggy. Adapted from @Yaffle's `date-shim` project.
	                  date = floor(value / 864e5);
	                  for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);
	                  for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);
	                  date = 1 + date - getDay(year, month);
	                  // The `time` value specifies the time within the day (see ES
	                  // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
	                  // to compute `A modulo B`, as the `%` operator does not
	                  // correspond to the `modulo` operation for negative numbers.
	                  time = (value % 864e5 + 864e5) % 864e5;
	                  // The hours, minutes, seconds, and milliseconds are obtained by
	                  // decomposing the time within the day. See section 15.9.1.10.
	                  hours = floor(time / 36e5) % 24;
	                  minutes = floor(time / 6e4) % 60;
	                  seconds = floor(time / 1e3) % 60;
	                  milliseconds = time % 1e3;
	                } else {
	                  year = value.getUTCFullYear();
	                  month = value.getUTCMonth();
	                  date = value.getUTCDate();
	                  hours = value.getUTCHours();
	                  minutes = value.getUTCMinutes();
	                  seconds = value.getUTCSeconds();
	                  milliseconds = value.getUTCMilliseconds();
	                }
	                // Serialize extended years correctly.
	                value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
	                  "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
	                  // Months, dates, hours, minutes, and seconds should have two
	                  // digits; milliseconds should have three.
	                  "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
	                  // Milliseconds are optional in ES 5.0, but required in 5.1.
	                  "." + toPaddedString(3, milliseconds) + "Z";
	              } else {
	                value = null;
	              }
	            } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
	              // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
	              // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
	              // ignores all `toJSON` methods on these objects unless they are
	              // defined directly on an instance.
	              value = value.toJSON(property);