with_resource.rb

module WithResources
  def self.with(release_method: :close, &block)
    vars = []
    trace = TracePoint.new(:b_call) do |tp|
      trace.disable
      b = tp.binding
      block.parameters.each do |_, name|
        vars << [name, b.local_variable_get(name)]
      end
    end
    trace.enable
    yield
  ensure
    trace.disable
    vars.reverse_each do |v|
      p v
    end
  end
end

WithResources.with do
  |a = 1, b = (a + 1)|
  p [a, b]
end