Class: Deterministic::EnumBuilder::DataType

Inherits:
Object
  • Object
show all
Defined in:
lib/deterministic/enum.rb

Defined Under Namespace

Modules: AnyEnum, Binary, Nullary

Class Method Summary collapse

Class Method Details

.create(parent, name, args) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/deterministic/enum.rb', line 54

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

  dt.instance_eval {
    class << self; public :new; end
    include AnyEnum
    define_method(:args) { args }

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

  if args.count == 0
    dt.instance_eval {
      include Nullary
      private :value
    }
  elsif args.count == 1
    dt.instance_eval {
      define_method(args[0].to_sym) { value }
    }
  else
    dt.instance_eval {
      include Binary

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