forwarding_bench.rb

# frozen_string_literal: true

require_relative '../../lib/ruby-on-speed'

RubyOnSpeed.benchmark 'Ruby:forwarding - forward a call' do
  test_truthy_results!

  class CallOrigin
    attr_accessor :value

    def initialize
      @value = 21
    end

    def caller
      CallCaller.new(-> { @value }, ->(arg) { @value = arg })
    end
  end

  class CallShadow
    attr_reader :origin, :entity, :entity_setter

    def initialize(origin, entity)
      @origin = origin
      @entity = entity
      @entity_setter = "#{entity}="
    end

    def value
      origin.__send__(entity)
    end

    def value=(arg)
      origin.__send__(entity_setter, arg)
    end
  end

  class CallFaker
    attr_reader :origin

    def initialize(origin, entity)
      @origin = origin
      @entity = "@#{entity}"
    end

    def value
      @origin.instance_variable_get(@entity)
    end

    def value=(arg)
      @origin.instance_variable_set(@entity, arg)
    end
  end

  class CallCaller
    def initialize(getter, setter)
      @getter, @setter = getter, setter
    end

    def value
      @getter.call
    end

    def value=(arg)
      @setter.call(arg)
    end
  end

  origin = CallOrigin.new
  shadow = CallShadow.new(origin, :value)
  faker = CallFaker.new(origin, :value)
  caller = origin.caller
  caller2 = CallCaller.new(-> { origin.value }, ->(arg) { origin.value = arg })

  code 'origin#value' do
    origin.value
  end

  code 'origin#value=' do
    origin.value = 42
  end

  code 'shadow#value' do
    shadow.value
  end

  code 'shadow#value=' do
    shadow.value = 42
  end

  code 'faker#value' do
    faker.value
  end

  code 'faker#value=' do
    faker.value = 42
  end

  code 'caller#value' do
    caller.value
  end

  code 'caller#value=' do
    caller.value = 42
  end

  code 'caller2#value' do
    caller2.value
  end

  code 'caller2#value=' do
    caller2.value = 42
  end
end