module Music
module Transcription
module Parsing

grammar Segment
  include NonnegativeInteger
  include NonnegativeFloat
  include NonnegativeRational
  
  rule range
    first:nonnegative_number ([.] 2..3) last:nonnegative_number {
      def to_range
        first.to_num...last.to_num
      end
    }
  end
  
  rule nonnegative_number
    nonnegative_float / nonnegative_rational / nonnegative_integer
  end
end

end
end
end