Contents

module ASIR
  # !SLIDE
  # Addtional Data
  #
  # Support additional data attached to any object.
  module AdditionalData
    def additional_data
      @additional_data || EMPTY_HASH
    end
    def additional_data!
      @additional_data ||= { }
    end
    def additional_data= x
      @additional_data = x
    end
    def [] key
      @additional_data && @additional_data[key]
    end
    def []= key, value
      (@additional_data ||= { })[key] = value
    end

    def self.included target
      super
      target.extend(ModuleMethods)
    end

    module ModuleMethods
      # Provide a getter method that delegates to addtional_data[...].
      def addr_getter *names
        names.each do | name |
          name = name.to_sym
          define_method(name) { | | addtional_data[name] }
        end
      end

      # Provide getter and setter methods that delegate to addtional_data[...].
      def addr_accessor *names
        addr_getter *names
        names.each do | name |
          name = name.to_sym
          define_method(:"#{name}=") { | v | addtional_data[name] = v }
        end
      end
    end

  end
  # !SLIDE END
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
asir-1.0.7	lib/asir/additional_data.rb
asir-1.0.6	lib/asir/additional_data.rb
asir-1.0.5	lib/asir/additional_data.rb
asir-1.0.4	lib/asir/additional_data.rb
asir-1.0.1	lib/asir/additional_data.rb