1_ping_pong.aeon

# The __foo stuff is a compiler hack for running raw instructions,
# so __foo runs the "foo" instruction. The single "_" stuff is to
# tell the compiler to automatically generate a register for a value.

class Pid:
  def construct(id):
    let @id = id

  pub def id:
    @id

class Process:
  pub def self.spawn(code):
    Pid.new(__spawn_process(_, code))

  pub def self.receive:
    __receive_process_message(_)

  pub def self.send(pid, message):
    __send_process_message(_, pid.id, message)

  pub def self.current:
    Pid.new(__get_current_pid(_))

let pong = Process.spawn:
  let received = Process.receive
  let pid = received[0]
  let msg = received[1]

  STDOUT.puts(msg)

  Process.send(pid, "pong")

Process.send(pong, [Process.current, "ping"])

STDOUT.puts(Process.receive)

2_out.txt

ping
pong