Class: Zenaton::Services::Serializer

Inherits:
Object
  • Object
show all
Defined in:
lib/zenaton/services/serializer.rb

Overview

Encoding and decoding ruby objects into Zenaton’s json format

Constant Summary collapse

ID_PREFIX =

this string prefixs ids that are used to identify objects

'@zenaton#'
KEY_OBJECT =

JSON key for objects

'o'
KEY_OBJECT_NAME =

JSON key for class name

'n'
KEY_OBJECT_PROPERTIES =

JSON key for object ivars

'p'
KEY_ARRAY =

JSON key for array and hashes

'a'
KEY_DATA =

JSON key for json compatibles types

'd'
KEY_STORE =

JSON key for deserialized complex object

's'

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Serializer

Returns a new instance of Serializer.



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# File 'lib/zenaton/services/serializer.rb', line 21

def initialize
  @properties = Properties.new
end

Instance Method Details

#decode(json_string) ⇒ Object

Decodes Zenaton’s format in a valid Ruby object



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# File 'lib/zenaton/services/serializer.rb', line 43

def decode(json_string)
  parsed_json = JSON.parse(json_string)
  @decoded = []
  @encoded = parsed_json.delete(KEY_STORE)
  case parsed_json.keys.first
  when KEY_DATA
    return parsed_json[KEY_DATA]
  when KEY_ARRAY
    return decode_enumerable(parsed_json[KEY_ARRAY])
  when KEY_OBJECT
    id = parsed_json[KEY_OBJECT][ID_PREFIX.length..-1].to_i
    return decode_from_store(id, @encoded[id])
  end
end

#encode(data) ⇒ Object

Encodes a given ruby object to Zenaton’s json format

Raises:

  • (ArgumentError) 


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# File 'lib/zenaton/services/serializer.rb', line 28

def encode(data)
  @encoded = []
  @decoded = []
  value = {}
  raise ArgumentError, 'Procs cannot be serialized' if data.is_a?(Proc)
  if basic_type?(data)
    value[KEY_DATA] = data
  else
    value[KEY_OBJECT] = encode_to_store(data)
  end
  value[KEY_STORE] = @encoded
  value.to_json
end