Testing syntax for a fsm generator.

fsm.nim

import macros

macro fsm*(name, definition: untyped): untyped =
  echo treeRepr definition

fsm butt:
  # default actions are taken when getting an input without that state
  # knowing what to do about it
  default:
    message:
      echo "Client said something, but it's not a valid state for that."

  connecting:
    entry:
      echo "Sending auth request."

    exit:
      echo "Leaving connection state."

    receivedAuthToken:
      echo "We have a token."
      goto authenticated

  authenticated:
    message(text: string):
      echo "Client: ", text

  # Can assign a superstate; if you are in this state, you are "also" in
  # the super state, additionally calls default to the superstate (and
  # so on upwards until default is reached.)
  superuser {.super: authenticated.}:
    reboot:
      echo "Rebooting server."