#!/usr/bin/env gosh

(use util.queue)
(use gauche.parameter)

(define *nodes* (make-parameter #f))

(define (yield msg hop)
  (let/cc cc
    (enqueue! (*nodes*) cc)
    ((dequeue! (*nodes*)) msg hop)))

(define (make-node name)
  (lambda (msg hop)
    (let loop ([msg msg] [hop hop])
      (cond [(= hop 0) #f]
            [else
             #;(format #t "~a: ~a~%" name msg)
             (receive (msg hop) (yield msg (- hop 1))
               (loop msg hop))]))))

(define (init-nodes n)
  (*nodes* (make-queue))
  (dotimes (i n)
    (enqueue! (*nodes*) (make-node #`"N,|i|"))))

(define (run msg n m)
  (init-nodes n)
  ((dequeue! (*nodes*)) msg (* n m)))

(define (main args)
  (run "Hello, world!"
       (x->integer (car *argv*))
       (x->integer (cadr *argv*)))
  0)