Function walk

test/json3.js:863–880

(source, property, callback)

        // `callback` function for each value. This is an implementation of the
        // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
        var walk = function (source, property, callback) {
          var value = source[property], length;
          if (typeof value == "object" && value) {
            // `forOwn` can't be used to traverse an array in Opera <= 8.54
            // because its `Object#hasOwnProperty` implementation returns `false`
            // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
            if (getClass.call(value) == arrayClass) {
              for (length = value.length; length--;) {
                update(getClass, forOwn, value, length, callback);
              }
            } else {
              forOwn(value, function (property) {
                update(value, property, callback);
              });
            }
          }
          return callback.call(source, property, value);
        };

        // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
        exports.parse = function (source, callback) {