1unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
2  require 'json'
3end
4
5# Struct serialization/deserialization
6class Struct
7
8  # Deserializes JSON string by constructing new Struct object with values
9  # <tt>v</tt> serialized by <tt>to_json</tt>.
10  def self.json_create(object)
11    new(*object['v'])
12  end
13
14  # Returns a hash, that will be turned into a JSON object and represent this
15  # object.
16  def as_json(*)
17    klass = self.class.name
18    klass.to_s.empty? and raise JSON::JSONError, "Only named structs are supported!"
19    {
20      JSON.create_id => klass,
21      'v'            => values,
22    }
23  end
24
25  # Stores class name (Struct) with Struct values <tt>v</tt> as a JSON string.
26  # Only named structs are supported.
27  def to_json(*args)
28    as_json.to_json(*args)
29  end
30end
31