Progress

progress.rb

class Progress
  def initialize(msg, total, &context)
    @total = total
    @context = context
  end

  def update(progress)
    puts(progress)
  end

  def fail(msg = "")
    puts "failed"
    # How do I exit from the block?
  end
end

## Progress DSL
def task(msg, total=100, &block)
  yield(Progress.new(msg, total, &block))
end

# Works nicely
task("--> starting") do |progress|
  (1..50).to_a.each do |i|
    sleep 0.01
    progress.update(i)
  end
end

# I want to exit from the outer block
task("--> starting") do |progress|
  (1..50).to_a.each do |i|
    sleep 0.01
    progress.fail("Woops")
  end
end

I want the progress.fail to exit early from the block, at the moment it blindly continues. Do I need to pass the context to the Progress class: Progress.new(msg, total, &block) and somehow send the context a break/return?