class DEBUGGER__::LineBreakpoint

def activate_exact iseq, events, line
  case
  when events.include?(:RUBY_EVENT_CALL)
    # "def foo" line set bp on the beginning of method foo
    activate(iseq, :call, line)
  when events.include?(:RUBY_EVENT_LINE)
    activate(iseq, :line, line)
  when events.include?(:RUBY_EVENT_RETURN)
    activate(iseq, :return, line)
  when events.include?(:RUBY_EVENT_B_RETURN)
    activate(iseq, :b_return, line)
  when events.include?(:RUBY_EVENT_END)
    activate(iseq, :end, line)
  else
    # not activated
  end
end