Infrastructure as Code by Rubyのために、なんかこういうテンプレートエンジンほしいよね

test.rb

params = {
  task_definition_arn: "",
  task_count: 1
}
XXX.new(<<~EOS).render
ecs_parameters do
  task_definition_arn #{params[:task_definition_arn].inspect}
  task_count #{params[:task_count]}             %% unless params[:task_count].nil?
  platform_version #{params[:platform_version]} %% unless params[:platform_version].nil?
end
EOS

# ---------------

ecs_parameters do
  task_definition_arn ""
  task_count 1
end