module Byebug::FrameFunctions

def navigate_to_frame(jump_no)
  return if jump_no == 0
  total_jumps, current_jumps, new_pos = jump_no.abs, 0, @state.frame_pos
  step = jump_no / total_jumps
  loop do
    new_pos += step
    return new_pos if new_pos < 0 || new_pos >= Context.stack_size
    next if c_frame?(new_pos)
    current_jumps += 1
    break if current_jumps == total_jumps
  end
  new_pos
end