Class: FunctionalLightService::EnumBuilder::DataType

Inherits:
Object
  • Object
show all
Defined in:
lib/functional-light-service/functional/enum.rb

Defined Under Namespace

Modules: AnyEnum, Binary, Nullary

Class Method Summary collapse

Class Method Details

.create(parent, args) ⇒ Object

rubocop:disable Metrics/MethodLength



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# File 'lib/functional-light-service/functional/enum.rb', line 69

def self.create(parent, args)
  if args.include? :value
    raise ArgumentError, "#{args} may not contain the reserved name :value"
  end

  dt = Class.new(parent)

  dt.instance_eval do
    public_class_method :new
    include AnyEnum
    define_method(:args) { args }

    define_method(:parent) { parent }
    private :parent
  end

  case args.count
  when 0
    dt.instance_eval do
      include Nullary
      private :value
    end
  when 1
    dt.instance_eval do
      define_method(args[0].to_sym) { value }
    end
  else
    dt.instance_eval do
      include Binary

      args.each do |m|
        define_method(m) do
          @value[m]
        end
      end
    end
  end

  dt
end