Class: Engine::Serialization::ObjectSerializer

Inherits:
Object
  • Object
show all
Defined in:
lib/engine/serialization/object_serializer.rb

Defined Under Namespace

Classes: UnauthorizedClassError, UnresolvedRef

Class Method Summary collapse

Class Method Details

.deserialize(data) ⇒ Object

Raises:



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# File 'lib/engine/serialization/object_serializer.rb', line 25

def deserialize(data)
  class_name = data[:_class]
  raise UnauthorizedClassError, "Class '#{class_name}' is not allowed" unless Serializable.allowed_class?(class_name)

  klass = Serializable.get_class(class_name)
  instance = klass.allocate
  instance.instance_variable_set(:@uuid, data[:uuid])

  klass.serializable_attributes.each do |attr|
    value = deserialize_value(data[attr])
    instance.instance_variable_set("@#{attr}", value)
  end

  instance
end

.deserialize_value(data) ⇒ Object 



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# File 'lib/engine/serialization/object_serializer.rb', line 63

def deserialize_value(data)
  return nil if data.nil?

  class_name = data[:_class]

  if data.key?(:_ref)
    UnresolvedRef.new(data[:_ref], class_name)
  elsif %w[String Integer Float TrueClass FalseClass NilClass].include?(class_name)
    data[:value]
  elsif class_name == "Symbol"
    data[:value].to_sym
  elsif class_name == "Vector"
    Vector[*data[:value]]
  elsif class_name == "Matrix"
    Matrix[*data[:value]]
  elsif class_name == "Engine::Quaternion"
    Engine::Quaternion.new(*data[:value])
  elsif class_name == "Hash"
    data[:value].transform_values { |v| deserialize_value(v) }
  elsif class_name == "Array"
    data[:value].map { |v| deserialize_value(v) }
  elsif Serializable.allowed_class?(class_name)
    klass = Serializable.get_class(class_name)
    if klass.respond_to?(:from_serializable_data)
      klass.from_serializable_data(data)
    else
      deserialize(data)
    end
  else
    raise UnauthorizedClassError, "Class '#{class_name}' is not allowed"
  end
end

.serialize(obj) ⇒ Object 



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# File 'lib/engine/serialization/object_serializer.rb', line 11

def serialize(obj)
  result = {
    _class: obj.class.name,
    uuid: obj.uuid
  }

  obj.class.serializable_attributes.each do |attr|
    value = obj.instance_variable_get("@#{attr}")
    result[attr] = serialize_value(value)
  end

  result
end

.serialize_value(value) ⇒ Object 



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# File 'lib/engine/serialization/object_serializer.rb', line 41

def serialize_value(value)
  if value.is_a?(Serializable) && value.respond_to?(:serializable_data)
    { _class: value.class.name, **value.serializable_data }
  elsif value.is_a?(Serializable) && value.respond_to?(:uuid)
    { _class: value.class.name, _ref: value.uuid }
  elsif value.is_a?(Hash)
    { _class: "Hash", value: value.transform_values { |v| serialize_value(v) } }
  elsif value.is_a?(Array)
    { _class: "Array", value: value.map { |v| serialize_value(v) } }
  elsif value.is_a?(Symbol)
    { _class: "Symbol", value: value.to_s }
  elsif value.is_a?(Vector)
    { _class: "Vector", value: value.to_a }
  elsif value.is_a?(Matrix)
    { _class: "Matrix", value: value.to_a }
  elsif value.is_a?(Engine::Quaternion)
    { _class: "Engine::Quaternion", value: [value.w, value.x, value.y, value.z] }
  else
    { _class: value.class.name, value: value }
  end
end